./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbcf8d-1625-428b-b392-c047ed14fffc/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbcf8d-1625-428b-b392-c047ed14fffc/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbcf8d-1625-428b-b392-c047ed14fffc/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbcf8d-1625-428b-b392-c047ed14fffc/bin/utaipan-ByfvJB40ur/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbcf8d-1625-428b-b392-c047ed14fffc/bin/utaipan-ByfvJB40ur/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbcf8d-1625-428b-b392-c047ed14fffc/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6710ae2bfe9a41273181e1b4b9dbdfa98f0dea6daffb771915892955eccb69dd --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 23:54:25,264 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:54:25,267 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:54:25,299 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:54:25,300 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:54:25,301 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:54:25,303 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:54:25,306 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:54:25,308 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:54:25,309 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:54:25,311 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:54:25,313 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:54:25,313 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:54:25,315 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:54:25,316 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:54:25,318 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:54:25,319 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:54:25,321 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:54:25,323 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:54:25,326 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:54:25,328 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:54:25,330 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:54:25,331 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:54:25,333 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:54:25,337 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:54:25,338 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:54:25,338 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:54:25,339 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:54:25,340 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:54:25,342 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:54:25,342 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:54:25,343 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:54:25,344 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:54:25,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:54:25,347 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:54:25,347 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:54:25,348 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:54:25,349 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:54:25,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:54:25,351 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:54:25,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:54:25,353 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbcf8d-1625-428b-b392-c047ed14fffc/bin/utaipan-ByfvJB40ur/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-25 23:54:25,397 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:54:25,397 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:54:25,398 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:54:25,398 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:54:25,404 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:54:25,405 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:54:25,405 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:54:25,406 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:54:25,406 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:54:25,406 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:54:25,408 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:54:25,408 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:54:25,409 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:54:25,409 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:54:25,409 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:54:25,409 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:54:25,410 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:54:25,410 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:54:25,411 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 23:54:25,411 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 23:54:25,412 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:54:25,412 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 23:54:25,412 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 23:54:25,413 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:54:25,414 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 23:54:25,414 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:54:25,415 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 23:54:25,415 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 23:54:25,415 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 23:54:25,416 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:54:25,416 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 23:54:25,416 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 23:54:25,417 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:54:25,417 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:54:25,417 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:54:25,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:54:25,418 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:54:25,418 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:54:25,418 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:54:25,419 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:54:25,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:54:25,419 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:54:25,420 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbcf8d-1625-428b-b392-c047ed14fffc/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbcf8d-1625-428b-b392-c047ed14fffc/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6710ae2bfe9a41273181e1b4b9dbdfa98f0dea6daffb771915892955eccb69dd [2022-11-25 23:54:25,807 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:54:25,848 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:54:25,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:54:25,854 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:54:25,855 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:54:25,856 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbcf8d-1625-428b-b392-c047ed14fffc/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i [2022-11-25 23:54:29,327 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:54:29,710 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:54:29,711 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbcf8d-1625-428b-b392-c047ed14fffc/sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i [2022-11-25 23:54:29,726 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbcf8d-1625-428b-b392-c047ed14fffc/bin/utaipan-ByfvJB40ur/data/a13313d7a/a9612c07211d4ab4885484d70dd5873b/FLAG6e671e538 [2022-11-25 23:54:29,749 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbcf8d-1625-428b-b392-c047ed14fffc/bin/utaipan-ByfvJB40ur/data/a13313d7a/a9612c07211d4ab4885484d70dd5873b [2022-11-25 23:54:29,757 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:54:29,759 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:54:29,767 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:54:29,768 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:54:29,775 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:54:29,776 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:54:29" (1/1) ... [2022-11-25 23:54:29,777 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cf1bd8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:54:29, skipping insertion in model container [2022-11-25 23:54:29,778 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:54:29" (1/1) ... [2022-11-25 23:54:29,787 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:54:29,865 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:54:30,426 WARN L237 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_80dbcf8d-1625-428b-b392-c047ed14fffc/sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i[30553,30566] [2022-11-25 23:54:30,446 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:54:30,459 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:54:30,508 WARN L237 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_80dbcf8d-1625-428b-b392-c047ed14fffc/sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i[30553,30566] [2022-11-25 23:54:30,512 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:54:30,546 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:54:30,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:54:30 WrapperNode [2022-11-25 23:54:30,547 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:54:30,548 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:54:30,548 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:54:30,549 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:54:30,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:54:30" (1/1) ... [2022-11-25 23:54:30,596 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:54:30" (1/1) ... [2022-11-25 23:54:30,644 INFO L138 Inliner]: procedures = 172, calls = 27, calls flagged for inlining = 11, calls inlined = 15, statements flattened = 125 [2022-11-25 23:54:30,645 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:54:30,646 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:54:30,646 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:54:30,646 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:54:30,657 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:54:30" (1/1) ... [2022-11-25 23:54:30,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:54:30" (1/1) ... [2022-11-25 23:54:30,678 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:54:30" (1/1) ... [2022-11-25 23:54:30,679 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:54:30" (1/1) ... [2022-11-25 23:54:30,686 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:54:30" (1/1) ... [2022-11-25 23:54:30,698 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:54:30" (1/1) ... [2022-11-25 23:54:30,706 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:54:30" (1/1) ... [2022-11-25 23:54:30,708 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:54:30" (1/1) ... [2022-11-25 23:54:30,714 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:54:30,715 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:54:30,715 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:54:30,715 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:54:30,717 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:54:30" (1/1) ... [2022-11-25 23:54:30,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:54:30,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbcf8d-1625-428b-b392-c047ed14fffc/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:54:30,752 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbcf8d-1625-428b-b392-c047ed14fffc/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:54:30,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80dbcf8d-1625-428b-b392-c047ed14fffc/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:54:30,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 23:54:30,805 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-11-25 23:54:30,805 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-11-25 23:54:30,805 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-25 23:54:30,805 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-25 23:54:30,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 23:54:30,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:54:30,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 23:54:30,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 23:54:30,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:54:30,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:54:30,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:54:30,809 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 23:54:30,992 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:54:30,995 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:54:31,486 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:54:31,786 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:54:31,787 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-25 23:54:31,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:54:31 BoogieIcfgContainer [2022-11-25 23:54:31,790 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:54:31,793 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:54:31,793 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:54:31,797 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:54:31,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:54:29" (1/3) ... [2022-11-25 23:54:31,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1af1c86d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:54:31, skipping insertion in model container [2022-11-25 23:54:31,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:54:30" (2/3) ... [2022-11-25 23:54:31,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1af1c86d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:54:31, skipping insertion in model container [2022-11-25 23:54:31,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:54:31" (3/3) ... [2022-11-25 23:54:31,801 INFO L112 eAbstractionObserver]: Analyzing ICFG 35_double_lock_p3_vs.i [2022-11-25 23:54:31,834 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:54:31,834 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2022-11-25 23:54:31,834 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 23:54:31,982 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 23:54:32,049 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 23:54:32,073 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 113 places, 112 transitions, 234 flow [2022-11-25 23:54:32,079 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 113 places, 112 transitions, 234 flow [2022-11-25 23:54:32,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 112 transitions, 234 flow [2022-11-25 23:54:32,167 INFO L130 PetriNetUnfolder]: 6/127 cut-off events. [2022-11-25 23:54:32,168 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 23:54:32,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 127 events. 6/127 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 278 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 105. Up to 4 conditions per place. [2022-11-25 23:54:32,180 INFO L119 LiptonReduction]: Number of co-enabled transitions 4364 [2022-11-25 23:54:37,883 INFO L134 LiptonReduction]: Checked pairs total: 12858 [2022-11-25 23:54:37,884 INFO L136 LiptonReduction]: Total number of compositions: 144 [2022-11-25 23:54:37,896 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 57 places, 53 transitions, 116 flow [2022-11-25 23:54:38,065 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2900 states, 2009 states have (on average 4.103534096565456) internal successors, (8244), 2899 states have internal predecessors, (8244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:54:38,089 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:54:38,096 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3f5a1844, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:54:38,096 INFO L358 AbstractCegarLoop]: Starting to check reachability of 57 error locations. [2022-11-25 23:54:38,107 INFO L276 IsEmpty]: Start isEmpty. Operand has 2900 states, 2009 states have (on average 4.103534096565456) internal successors, (8244), 2899 states have internal predecessors, (8244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:54:38,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-25 23:54:38,114 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:54:38,116 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-25 23:54:38,117 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-25 23:54:38,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:54:38,123 INFO L85 PathProgramCache]: Analyzing trace with hash 724, now seen corresponding path program 1 times [2022-11-25 23:54:38,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:54:38,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580092835] [2022-11-25 23:54:38,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:54:38,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:54:38,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:54:38,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:54:38,301 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:54:38,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580092835] [2022-11-25 23:54:38,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580092835] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:54:38,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:54:38,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-25 23:54:38,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535351934] [2022-11-25 23:54:38,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:54:38,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 23:54:38,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:54:38,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 23:54:38,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 23:54:38,351 INFO L87 Difference]: Start difference. First operand has 2900 states, 2009 states have (on average 4.103534096565456) internal successors, (8244), 2899 states have internal predecessors, (8244), 0 states have call successors, (0), 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, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:54:38,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:54:38,530 INFO L93 Difference]: Finished difference Result 857 states and 2387 transitions. [2022-11-25 23:54:38,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 23:54:38,533 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 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 1 [2022-11-25 23:54:38,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:54:38,569 INFO L225 Difference]: With dead ends: 857 [2022-11-25 23:54:38,570 INFO L226 Difference]: Without dead ends: 857 [2022-11-25 23:54:38,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 23:54:38,576 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:54:38,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:54:38,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2022-11-25 23:54:38,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 857. [2022-11-25 23:54:38,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 742 states have (on average 3.2169811320754715) internal successors, (2387), 856 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:54:38,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 2387 transitions. [2022-11-25 23:54:38,698 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 2387 transitions. Word has length 1 [2022-11-25 23:54:38,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:54:38,699 INFO L495 AbstractCegarLoop]: Abstraction has 857 states and 2387 transitions. [2022-11-25 23:54:38,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:54:38,700 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 2387 transitions. [2022-11-25 23:54:38,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-25 23:54:38,700 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:54:38,701 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-25 23:54:38,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:54:38,701 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-25 23:54:38,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:54:38,703 INFO L85 PathProgramCache]: Analyzing trace with hash 22180785, now seen corresponding path program 1 times [2022-11-25 23:54:38,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:54:38,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555777819] [2022-11-25 23:54:38,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:54:38,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:54:38,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:54:38,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:54:38,964 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:54:38,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555777819] [2022-11-25 23:54:38,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555777819] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:54:38,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:54:38,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 23:54:38,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24664420] [2022-11-25 23:54:38,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:54:38,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:54:38,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:54:38,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:54:38,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:54:38,976 INFO L87 Difference]: Start difference. First operand 857 states and 2387 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:54:39,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:54:39,061 INFO L93 Difference]: Finished difference Result 713 states and 1964 transitions. [2022-11-25 23:54:39,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:54:39,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2022-11-25 23:54:39,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:54:39,070 INFO L225 Difference]: With dead ends: 713 [2022-11-25 23:54:39,071 INFO L226 Difference]: Without dead ends: 713 [2022-11-25 23:54:39,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:54:39,075 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 29 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:54:39,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 2 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:54:39,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2022-11-25 23:54:39,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 713. [2022-11-25 23:54:39,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 638 states have (on average 3.0783699059561127) internal successors, (1964), 712 states have internal predecessors, (1964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:54:39,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1964 transitions. [2022-11-25 23:54:39,130 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1964 transitions. Word has length 4 [2022-11-25 23:54:39,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:54:39,131 INFO L495 AbstractCegarLoop]: Abstraction has 713 states and 1964 transitions. [2022-11-25 23:54:39,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:54:39,132 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1964 transitions. [2022-11-25 23:54:39,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-25 23:54:39,132 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:54:39,133 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-25 23:54:39,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 23:54:39,133 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-25 23:54:39,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:54:39,134 INFO L85 PathProgramCache]: Analyzing trace with hash 22180786, now seen corresponding path program 1 times [2022-11-25 23:54:39,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:54:39,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82588766] [2022-11-25 23:54:39,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:54:39,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:54:39,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:54:39,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:54:39,264 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:54:39,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82588766] [2022-11-25 23:54:39,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82588766] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:54:39,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:54:39,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 23:54:39,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441762161] [2022-11-25 23:54:39,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:54:39,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:54:39,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:54:39,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:54:39,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:54:39,268 INFO L87 Difference]: Start difference. First operand 713 states and 1964 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:54:39,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:54:39,326 INFO L93 Difference]: Finished difference Result 569 states and 1541 transitions. [2022-11-25 23:54:39,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:54:39,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2022-11-25 23:54:39,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:54:39,332 INFO L225 Difference]: With dead ends: 569 [2022-11-25 23:54:39,332 INFO L226 Difference]: Without dead ends: 569 [2022-11-25 23:54:39,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:54:39,334 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 28 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:54:39,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 2 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:54:39,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2022-11-25 23:54:39,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 569. [2022-11-25 23:54:39,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 534 states have (on average 2.885767790262172) internal successors, (1541), 568 states have internal predecessors, (1541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:54:39,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 1541 transitions. [2022-11-25 23:54:39,359 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 1541 transitions. Word has length 4 [2022-11-25 23:54:39,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:54:39,359 INFO L495 AbstractCegarLoop]: Abstraction has 569 states and 1541 transitions. [2022-11-25 23:54:39,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:54:39,360 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 1541 transitions. [2022-11-25 23:54:39,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-25 23:54:39,360 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:54:39,361 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-25 23:54:39,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 23:54:39,361 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-25 23:54:39,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:54:39,362 INFO L85 PathProgramCache]: Analyzing trace with hash 22178710, now seen corresponding path program 1 times [2022-11-25 23:54:39,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:54:39,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386087517] [2022-11-25 23:54:39,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:54:39,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:54:39,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:54:39,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:54:39,527 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:54:39,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386087517] [2022-11-25 23:54:39,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386087517] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:54:39,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:54:39,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 23:54:39,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249952477] [2022-11-25 23:54:39,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:54:39,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:54:39,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:54:39,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:54:39,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:54:39,534 INFO L87 Difference]: Start difference. First operand 569 states and 1541 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:54:39,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:54:39,604 INFO L93 Difference]: Finished difference Result 359 states and 968 transitions. [2022-11-25 23:54:39,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:54:39,605 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2022-11-25 23:54:39,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:54:39,608 INFO L225 Difference]: With dead ends: 359 [2022-11-25 23:54:39,608 INFO L226 Difference]: Without dead ends: 359 [2022-11-25 23:54:39,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:54:39,613 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:54:39,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:54:39,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-11-25 23:54:39,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2022-11-25 23:54:39,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 347 states have (on average 2.7896253602305476) internal successors, (968), 358 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:54:39,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 968 transitions. [2022-11-25 23:54:39,633 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 968 transitions. Word has length 4 [2022-11-25 23:54:39,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:54:39,635 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 968 transitions. [2022-11-25 23:54:39,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:54:39,636 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 968 transitions. [2022-11-25 23:54:39,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-25 23:54:39,636 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:54:39,637 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-25 23:54:39,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 23:54:39,639 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-25 23:54:39,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:54:39,640 INFO L85 PathProgramCache]: Analyzing trace with hash 22178711, now seen corresponding path program 1 times [2022-11-25 23:54:39,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:54:39,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723568960] [2022-11-25 23:54:39,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:54:39,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:54:39,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:54:39,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:54:39,860 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:54:39,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723568960] [2022-11-25 23:54:39,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723568960] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:54:39,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:54:39,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 23:54:39,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616584386] [2022-11-25 23:54:39,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:54:39,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:54:39,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:54:39,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:54:39,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:54:39,872 INFO L87 Difference]: Start difference. First operand 359 states and 968 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:54:39,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:54:39,926 INFO L93 Difference]: Finished difference Result 197 states and 527 transitions. [2022-11-25 23:54:39,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:54:39,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2022-11-25 23:54:39,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:54:39,928 INFO L225 Difference]: With dead ends: 197 [2022-11-25 23:54:39,928 INFO L226 Difference]: Without dead ends: 197 [2022-11-25 23:54:39,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:54:39,930 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:54:39,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:54:39,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-11-25 23:54:39,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2022-11-25 23:54:39,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 2.688775510204082) internal successors, (527), 196 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:54:39,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 527 transitions. [2022-11-25 23:54:39,939 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 527 transitions. Word has length 4 [2022-11-25 23:54:39,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:54:39,939 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 527 transitions. [2022-11-25 23:54:39,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:54:39,940 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 527 transitions. [2022-11-25 23:54:39,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-25 23:54:39,941 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:54:39,941 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 23:54:39,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 23:54:39,941 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err4ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-25 23:54:39,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:54:39,943 INFO L85 PathProgramCache]: Analyzing trace with hash 687540728, now seen corresponding path program 1 times [2022-11-25 23:54:39,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:54:39,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775068039] [2022-11-25 23:54:39,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:54:39,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:54:39,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:54:40,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:54:40,017 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:54:40,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775068039] [2022-11-25 23:54:40,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775068039] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:54:40,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:54:40,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 23:54:40,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580982311] [2022-11-25 23:54:40,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:54:40,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:54:40,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:54:40,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:54:40,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:54:40,021 INFO L87 Difference]: Start difference. First operand 197 states and 527 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:54:40,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:54:40,068 INFO L93 Difference]: Finished difference Result 202 states and 523 transitions. [2022-11-25 23:54:40,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:54:40,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2022-11-25 23:54:40,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:54:40,070 INFO L225 Difference]: With dead ends: 202 [2022-11-25 23:54:40,070 INFO L226 Difference]: Without dead ends: 202 [2022-11-25 23:54:40,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:54:40,074 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 9 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:54:40,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 4 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:54:40,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-11-25 23:54:40,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2022-11-25 23:54:40,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 2.601990049751244) internal successors, (523), 201 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:54:40,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 523 transitions. [2022-11-25 23:54:40,082 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 523 transitions. Word has length 5 [2022-11-25 23:54:40,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:54:40,083 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 523 transitions. [2022-11-25 23:54:40,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:54:40,084 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 523 transitions. [2022-11-25 23:54:40,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-25 23:54:40,085 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:54:40,085 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-25 23:54:40,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 23:54:40,086 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2022-11-25 23:54:40,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:54:40,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1737973075, now seen corresponding path program 1 times [2022-11-25 23:54:40,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:54:40,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011274845] [2022-11-25 23:54:40,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:54:40,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:54:40,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:54:40,112 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 23:54:40,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:54:40,149 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-25 23:54:40,149 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 23:54:40,150 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (56 of 57 remaining) [2022-11-25 23:54:40,153 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 57 remaining) [2022-11-25 23:54:40,153 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 57 remaining) [2022-11-25 23:54:40,153 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 57 remaining) [2022-11-25 23:54:40,153 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 57 remaining) [2022-11-25 23:54:40,154 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 57 remaining) [2022-11-25 23:54:40,154 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 57 remaining) [2022-11-25 23:54:40,154 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 57 remaining) [2022-11-25 23:54:40,154 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 57 remaining) [2022-11-25 23:54:40,155 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 57 remaining) [2022-11-25 23:54:40,155 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 57 remaining) [2022-11-25 23:54:40,155 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 57 remaining) [2022-11-25 23:54:40,155 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 57 remaining) [2022-11-25 23:54:40,155 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 57 remaining) [2022-11-25 23:54:40,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 57 remaining) [2022-11-25 23:54:40,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 57 remaining) [2022-11-25 23:54:40,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 57 remaining) [2022-11-25 23:54:40,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 57 remaining) [2022-11-25 23:54:40,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 57 remaining) [2022-11-25 23:54:40,157 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 57 remaining) [2022-11-25 23:54:40,157 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 57 remaining) [2022-11-25 23:54:40,157 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (35 of 57 remaining) [2022-11-25 23:54:40,157 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 57 remaining) [2022-11-25 23:54:40,158 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 57 remaining) [2022-11-25 23:54:40,158 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 57 remaining) [2022-11-25 23:54:40,158 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 57 remaining) [2022-11-25 23:54:40,158 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 57 remaining) [2022-11-25 23:54:40,158 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 57 remaining) [2022-11-25 23:54:40,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (28 of 57 remaining) [2022-11-25 23:54:40,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 57 remaining) [2022-11-25 23:54:40,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 57 remaining) [2022-11-25 23:54:40,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 57 remaining) [2022-11-25 23:54:40,160 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 57 remaining) [2022-11-25 23:54:40,160 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 57 remaining) [2022-11-25 23:54:40,160 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 57 remaining) [2022-11-25 23:54:40,160 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 57 remaining) [2022-11-25 23:54:40,160 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 57 remaining) [2022-11-25 23:54:40,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 57 remaining) [2022-11-25 23:54:40,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 57 remaining) [2022-11-25 23:54:40,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 57 remaining) [2022-11-25 23:54:40,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 57 remaining) [2022-11-25 23:54:40,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 57 remaining) [2022-11-25 23:54:40,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 57 remaining) [2022-11-25 23:54:40,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 57 remaining) [2022-11-25 23:54:40,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 57 remaining) [2022-11-25 23:54:40,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 57 remaining) [2022-11-25 23:54:40,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 57 remaining) [2022-11-25 23:54:40,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 57 remaining) [2022-11-25 23:54:40,163 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 57 remaining) [2022-11-25 23:54:40,163 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 57 remaining) [2022-11-25 23:54:40,163 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 57 remaining) [2022-11-25 23:54:40,163 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 57 remaining) [2022-11-25 23:54:40,163 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (4 of 57 remaining) [2022-11-25 23:54:40,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 57 remaining) [2022-11-25 23:54:40,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 57 remaining) [2022-11-25 23:54:40,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 57 remaining) [2022-11-25 23:54:40,164 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 57 remaining) [2022-11-25 23:54:40,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 23:54:40,167 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:54:40,169 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 23:54:40,169 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-25 23:54:40,252 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 23:54:40,256 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 23:54:40,256 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 179 places, 178 transitions, 380 flow [2022-11-25 23:54:40,257 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 179 places, 178 transitions, 380 flow [2022-11-25 23:54:40,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 178 transitions, 380 flow [2022-11-25 23:54:40,327 INFO L130 PetriNetUnfolder]: 8/189 cut-off events. [2022-11-25 23:54:40,327 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 23:54:40,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 189 events. 8/189 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 581 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 198. Up to 6 conditions per place. [2022-11-25 23:54:40,345 INFO L119 LiptonReduction]: Number of co-enabled transitions 11630 [2022-11-25 23:54:49,350 INFO L134 LiptonReduction]: Checked pairs total: 68307 [2022-11-25 23:54:49,351 INFO L136 LiptonReduction]: Total number of compositions: 259 [2022-11-25 23:54:49,352 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 108 places, 103 transitions, 230 flow [2022-11-25 23:54:54,842 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 109327 states, 94155 states have (on average 4.565439966013488) internal successors, (429859), 109326 states have internal predecessors, (429859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:54:54,843 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:54:54,844 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3f5a1844, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:54:54,844 INFO L358 AbstractCegarLoop]: Starting to check reachability of 82 error locations. [2022-11-25 23:54:55,035 INFO L276 IsEmpty]: Start isEmpty. Operand has 109327 states, 94155 states have (on average 4.565439966013488) internal successors, (429859), 109326 states have internal predecessors, (429859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:54:55,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-25 23:54:55,036 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:54:55,036 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-25 23:54:55,037 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 79 more)] === [2022-11-25 23:54:55,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:54:55,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1204, now seen corresponding path program 1 times [2022-11-25 23:54:55,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:54:55,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910812452] [2022-11-25 23:54:55,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:54:55,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:54:55,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:54:55,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:54:55,049 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:54:55,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910812452] [2022-11-25 23:54:55,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910812452] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:54:55,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:54:55,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-25 23:54:55,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582108434] [2022-11-25 23:54:55,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:54:55,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 23:54:55,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:54:55,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 23:54:55,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 23:54:55,199 INFO L87 Difference]: Start difference. First operand has 109327 states, 94155 states have (on average 4.565439966013488) internal successors, (429859), 109326 states have internal predecessors, (429859), 0 states have call successors, (0), 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, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:54:56,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:54:56,193 INFO L93 Difference]: Finished difference Result 23825 states and 90911 transitions. [2022-11-25 23:54:56,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 23:54:56,194 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 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 1 [2022-11-25 23:54:56,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:54:56,454 INFO L225 Difference]: With dead ends: 23825 [2022-11-25 23:54:56,455 INFO L226 Difference]: Without dead ends: 23825 [2022-11-25 23:54:56,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 23:54:56,456 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:54:56,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:54:56,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23825 states. [2022-11-25 23:54:57,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23825 to 23825. [2022-11-25 23:54:57,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23825 states, 23010 states have (on average 3.9509343763581053) internal successors, (90911), 23824 states have internal predecessors, (90911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:54:58,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23825 states to 23825 states and 90911 transitions. [2022-11-25 23:54:58,293 INFO L78 Accepts]: Start accepts. Automaton has 23825 states and 90911 transitions. Word has length 1 [2022-11-25 23:54:58,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:54:58,293 INFO L495 AbstractCegarLoop]: Abstraction has 23825 states and 90911 transitions. [2022-11-25 23:54:58,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:54:58,294 INFO L276 IsEmpty]: Start isEmpty. Operand 23825 states and 90911 transitions. [2022-11-25 23:54:58,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-25 23:54:58,295 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:54:58,295 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-25 23:54:58,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 23:54:58,296 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 79 more)] === [2022-11-25 23:54:58,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:54:58,297 INFO L85 PathProgramCache]: Analyzing trace with hash 36861740, now seen corresponding path program 1 times [2022-11-25 23:54:58,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:54:58,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462824283] [2022-11-25 23:54:58,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:54:58,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:54:58,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:54:58,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:54:58,407 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:54:58,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462824283] [2022-11-25 23:54:58,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462824283] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:54:58,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:54:58,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 23:54:58,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820312010] [2022-11-25 23:54:58,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:54:58,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:54:58,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:54:58,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:54:58,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:54:58,411 INFO L87 Difference]: Start difference. First operand 23825 states and 90911 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:54:58,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:54:58,689 INFO L93 Difference]: Finished difference Result 13260 states and 50486 transitions. [2022-11-25 23:54:58,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:54:58,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2022-11-25 23:54:58,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:54:58,816 INFO L225 Difference]: With dead ends: 13260 [2022-11-25 23:54:58,817 INFO L226 Difference]: Without dead ends: 13260 [2022-11-25 23:54:58,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:54:58,818 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 48 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:54:58,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 17 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:54:58,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13260 states. [2022-11-25 23:54:59,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13260 to 13260. [2022-11-25 23:54:59,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13260 states, 13086 states have (on average 3.8580162005196392) internal successors, (50486), 13259 states have internal predecessors, (50486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:54:59,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13260 states to 13260 states and 50486 transitions. [2022-11-25 23:54:59,786 INFO L78 Accepts]: Start accepts. Automaton has 13260 states and 50486 transitions. Word has length 4 [2022-11-25 23:54:59,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:54:59,787 INFO L495 AbstractCegarLoop]: Abstraction has 13260 states and 50486 transitions. [2022-11-25 23:54:59,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:54:59,787 INFO L276 IsEmpty]: Start isEmpty. Operand 13260 states and 50486 transitions. [2022-11-25 23:54:59,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-25 23:54:59,788 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:54:59,788 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-25 23:54:59,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 23:54:59,788 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 79 more)] === [2022-11-25 23:54:59,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:54:59,789 INFO L85 PathProgramCache]: Analyzing trace with hash 36861741, now seen corresponding path program 1 times [2022-11-25 23:54:59,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:54:59,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362169122] [2022-11-25 23:54:59,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:54:59,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:54:59,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:54:59,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:54:59,937 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:54:59,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362169122] [2022-11-25 23:54:59,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362169122] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:54:59,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:54:59,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 23:54:59,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880482383] [2022-11-25 23:54:59,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:54:59,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:54:59,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:54:59,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:54:59,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:54:59,940 INFO L87 Difference]: Start difference. First operand 13260 states and 50486 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:55:00,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:55:00,056 INFO L93 Difference]: Finished difference Result 6337 states and 24047 transitions. [2022-11-25 23:55:00,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:55:00,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2022-11-25 23:55:00,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:55:00,100 INFO L225 Difference]: With dead ends: 6337 [2022-11-25 23:55:00,100 INFO L226 Difference]: Without dead ends: 6337 [2022-11-25 23:55:00,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:55:00,101 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 40 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:55:00,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 17 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:55:00,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6337 states. [2022-11-25 23:55:00,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6337 to 6337. [2022-11-25 23:55:00,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6337 states, 6330 states have (on average 3.7988941548183255) internal successors, (24047), 6336 states have internal predecessors, (24047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:55:00,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6337 states to 6337 states and 24047 transitions. [2022-11-25 23:55:00,324 INFO L78 Accepts]: Start accepts. Automaton has 6337 states and 24047 transitions. Word has length 4 [2022-11-25 23:55:00,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:55:00,325 INFO L495 AbstractCegarLoop]: Abstraction has 6337 states and 24047 transitions. [2022-11-25 23:55:00,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:55:00,325 INFO L276 IsEmpty]: Start isEmpty. Operand 6337 states and 24047 transitions. [2022-11-25 23:55:00,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-25 23:55:00,326 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:55:00,326 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 23:55:00,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 23:55:00,326 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err4ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 79 more)] === [2022-11-25 23:55:00,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:55:00,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1142715043, now seen corresponding path program 1 times [2022-11-25 23:55:00,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:55:00,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104905750] [2022-11-25 23:55:00,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:55:00,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:55:00,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:55:00,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:55:00,355 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:55:00,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104905750] [2022-11-25 23:55:00,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104905750] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:55:00,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:55:00,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 23:55:00,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970691934] [2022-11-25 23:55:00,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:55:00,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:55:00,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:55:00,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:55:00,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:55:00,358 INFO L87 Difference]: Start difference. First operand 6337 states and 24047 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:55:00,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:55:00,723 INFO L93 Difference]: Finished difference Result 6470 states and 24326 transitions. [2022-11-25 23:55:00,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:55:00,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2022-11-25 23:55:00,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:55:00,779 INFO L225 Difference]: With dead ends: 6470 [2022-11-25 23:55:00,779 INFO L226 Difference]: Without dead ends: 6470 [2022-11-25 23:55:00,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:55:00,781 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 18 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 23:55:00,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 18 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 23:55:00,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6470 states. [2022-11-25 23:55:00,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6470 to 6470. [2022-11-25 23:55:00,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6470 states, 6465 states have (on average 3.762722351121423) internal successors, (24326), 6469 states have internal predecessors, (24326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:55:01,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6470 states to 6470 states and 24326 transitions. [2022-11-25 23:55:01,025 INFO L78 Accepts]: Start accepts. Automaton has 6470 states and 24326 transitions. Word has length 5 [2022-11-25 23:55:01,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:55:01,025 INFO L495 AbstractCegarLoop]: Abstraction has 6470 states and 24326 transitions. [2022-11-25 23:55:01,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:55:01,026 INFO L276 IsEmpty]: Start isEmpty. Operand 6470 states and 24326 transitions. [2022-11-25 23:55:01,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-25 23:55:01,026 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:55:01,027 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 23:55:01,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 23:55:01,027 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 79 more)] === [2022-11-25 23:55:01,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:55:01,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1142558491, now seen corresponding path program 1 times [2022-11-25 23:55:01,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:55:01,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394418007] [2022-11-25 23:55:01,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:55:01,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:55:01,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:55:01,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:55:01,060 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:55:01,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394418007] [2022-11-25 23:55:01,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394418007] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:55:01,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:55:01,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 23:55:01,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716079146] [2022-11-25 23:55:01,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:55:01,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:55:01,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:55:01,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:55:01,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:55:01,062 INFO L87 Difference]: Start difference. First operand 6470 states and 24326 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:55:01,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:55:01,147 INFO L93 Difference]: Finished difference Result 5536 states and 20699 transitions. [2022-11-25 23:55:01,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:55:01,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2022-11-25 23:55:01,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:55:01,180 INFO L225 Difference]: With dead ends: 5536 [2022-11-25 23:55:01,180 INFO L226 Difference]: Without dead ends: 5536 [2022-11-25 23:55:01,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:55:01,181 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 38 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:55:01,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 17 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:55:01,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5536 states. [2022-11-25 23:55:01,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5536 to 5536. [2022-11-25 23:55:01,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5536 states, 5533 states have (on average 3.7410084944876196) internal successors, (20699), 5535 states have internal predecessors, (20699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:55:01,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5536 states to 5536 states and 20699 transitions. [2022-11-25 23:55:01,582 INFO L78 Accepts]: Start accepts. Automaton has 5536 states and 20699 transitions. Word has length 5 [2022-11-25 23:55:01,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:55:01,582 INFO L495 AbstractCegarLoop]: Abstraction has 5536 states and 20699 transitions. [2022-11-25 23:55:01,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:55:01,582 INFO L276 IsEmpty]: Start isEmpty. Operand 5536 states and 20699 transitions. [2022-11-25 23:55:01,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-25 23:55:01,583 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:55:01,583 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 23:55:01,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 23:55:01,583 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 79 more)] === [2022-11-25 23:55:01,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:55:01,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1142558492, now seen corresponding path program 1 times [2022-11-25 23:55:01,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:55:01,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396643139] [2022-11-25 23:55:01,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:55:01,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:55:01,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:55:01,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:55:01,660 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:55:01,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396643139] [2022-11-25 23:55:01,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396643139] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:55:01,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:55:01,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 23:55:01,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714885580] [2022-11-25 23:55:01,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:55:01,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:55:01,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:55:01,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:55:01,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:55:01,663 INFO L87 Difference]: Start difference. First operand 5536 states and 20699 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:55:01,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:55:01,748 INFO L93 Difference]: Finished difference Result 4602 states and 17072 transitions. [2022-11-25 23:55:01,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:55:01,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2022-11-25 23:55:01,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:55:01,769 INFO L225 Difference]: With dead ends: 4602 [2022-11-25 23:55:01,769 INFO L226 Difference]: Without dead ends: 4602 [2022-11-25 23:55:01,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:55:01,770 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 37 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:55:01,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 17 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:55:01,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4602 states. [2022-11-25 23:55:01,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4602 to 4602. [2022-11-25 23:55:01,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4602 states, 4601 states have (on average 3.710497717887416) internal successors, (17072), 4601 states have internal predecessors, (17072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:55:01,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4602 states to 4602 states and 17072 transitions. [2022-11-25 23:55:01,926 INFO L78 Accepts]: Start accepts. Automaton has 4602 states and 17072 transitions. Word has length 5 [2022-11-25 23:55:01,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:55:01,926 INFO L495 AbstractCegarLoop]: Abstraction has 4602 states and 17072 transitions. [2022-11-25 23:55:01,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:55:01,927 INFO L276 IsEmpty]: Start isEmpty. Operand 4602 states and 17072 transitions. [2022-11-25 23:55:01,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-25 23:55:01,928 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:55:01,928 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:55:01,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 23:55:01,929 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err4ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 79 more)] === [2022-11-25 23:55:01,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:55:01,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1217214373, now seen corresponding path program 1 times [2022-11-25 23:55:01,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:55:01,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493900214] [2022-11-25 23:55:01,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:55:01,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:55:01,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:55:01,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:55:01,995 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:55:01,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493900214] [2022-11-25 23:55:01,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493900214] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:55:01,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:55:01,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:55:01,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321490698] [2022-11-25 23:55:01,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:55:01,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:55:01,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:55:01,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:55:01,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:55:01,998 INFO L87 Difference]: Start difference. First operand 4602 states and 17072 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:55:02,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:55:02,244 INFO L93 Difference]: Finished difference Result 5314 states and 19599 transitions. [2022-11-25 23:55:02,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 23:55:02,244 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2022-11-25 23:55:02,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:55:02,269 INFO L225 Difference]: With dead ends: 5314 [2022-11-25 23:55:02,269 INFO L226 Difference]: Without dead ends: 5314 [2022-11-25 23:55:02,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-25 23:55:02,270 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 68 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:55:02,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 67 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:55:02,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5314 states. [2022-11-25 23:55:02,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5314 to 5164. [2022-11-25 23:55:02,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5164 states, 5163 states have (on average 3.717606042998257) internal successors, (19194), 5163 states have internal predecessors, (19194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:55:02,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5164 states to 5164 states and 19194 transitions. [2022-11-25 23:55:02,465 INFO L78 Accepts]: Start accepts. Automaton has 5164 states and 19194 transitions. Word has length 12 [2022-11-25 23:55:02,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:55:02,466 INFO L495 AbstractCegarLoop]: Abstraction has 5164 states and 19194 transitions. [2022-11-25 23:55:02,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:55:02,467 INFO L276 IsEmpty]: Start isEmpty. Operand 5164 states and 19194 transitions. [2022-11-25 23:55:02,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-25 23:55:02,475 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:55:02,476 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:55:02,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 23:55:02,476 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err4ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 79 more)] === [2022-11-25 23:55:02,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:55:02,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1511979502, now seen corresponding path program 1 times [2022-11-25 23:55:02,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:55:02,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434207669] [2022-11-25 23:55:02,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:55:02,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:55:02,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:55:02,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:55:02,700 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:55:02,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434207669] [2022-11-25 23:55:02,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434207669] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:55:02,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:55:02,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:55:02,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819121922] [2022-11-25 23:55:02,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:55:02,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 23:55:02,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:55:02,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 23:55:02,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 23:55:02,702 INFO L87 Difference]: Start difference. First operand 5164 states and 19194 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2022-11-25 23:55:03,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:55:03,102 INFO L93 Difference]: Finished difference Result 6488 states and 23728 transitions. [2022-11-25 23:55:03,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 23:55:03,103 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 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 [2022-11-25 23:55:03,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:55:03,131 INFO L225 Difference]: With dead ends: 6488 [2022-11-25 23:55:03,131 INFO L226 Difference]: Without dead ends: 6488 [2022-11-25 23:55:03,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-25 23:55:03,132 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 108 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 23:55:03,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 121 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 23:55:03,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6488 states. [2022-11-25 23:55:03,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6488 to 6088. [2022-11-25 23:55:03,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6088 states, 6087 states have (on average 3.720716280597996) internal successors, (22648), 6087 states have internal predecessors, (22648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:55:03,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6088 states to 6088 states and 22648 transitions. [2022-11-25 23:55:03,430 INFO L78 Accepts]: Start accepts. Automaton has 6088 states and 22648 transitions. Word has length 14 [2022-11-25 23:55:03,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:55:03,431 INFO L495 AbstractCegarLoop]: Abstraction has 6088 states and 22648 transitions. [2022-11-25 23:55:03,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2022-11-25 23:55:03,431 INFO L276 IsEmpty]: Start isEmpty. Operand 6088 states and 22648 transitions. [2022-11-25 23:55:03,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-25 23:55:03,433 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:55:03,433 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:55:03,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 23:55:03,433 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 79 more)] === [2022-11-25 23:55:03,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:55:03,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1070798451, now seen corresponding path program 1 times [2022-11-25 23:55:03,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:55:03,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241101193] [2022-11-25 23:55:03,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:55:03,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:55:03,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:55:03,450 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 23:55:03,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:55:03,465 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-25 23:55:03,465 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 23:55:03,465 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (81 of 82 remaining) [2022-11-25 23:55:03,466 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 82 remaining) [2022-11-25 23:55:03,466 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (79 of 82 remaining) [2022-11-25 23:55:03,466 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 82 remaining) [2022-11-25 23:55:03,467 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 82 remaining) [2022-11-25 23:55:03,467 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 82 remaining) [2022-11-25 23:55:03,467 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 82 remaining) [2022-11-25 23:55:03,467 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 82 remaining) [2022-11-25 23:55:03,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 82 remaining) [2022-11-25 23:55:03,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 82 remaining) [2022-11-25 23:55:03,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 82 remaining) [2022-11-25 23:55:03,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 82 remaining) [2022-11-25 23:55:03,469 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 82 remaining) [2022-11-25 23:55:03,469 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 82 remaining) [2022-11-25 23:55:03,469 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 82 remaining) [2022-11-25 23:55:03,469 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 82 remaining) [2022-11-25 23:55:03,470 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 82 remaining) [2022-11-25 23:55:03,470 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 82 remaining) [2022-11-25 23:55:03,470 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 82 remaining) [2022-11-25 23:55:03,470 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 82 remaining) [2022-11-25 23:55:03,471 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 82 remaining) [2022-11-25 23:55:03,471 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (60 of 82 remaining) [2022-11-25 23:55:03,471 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 82 remaining) [2022-11-25 23:55:03,471 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 82 remaining) [2022-11-25 23:55:03,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 82 remaining) [2022-11-25 23:55:03,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 82 remaining) [2022-11-25 23:55:03,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 82 remaining) [2022-11-25 23:55:03,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 82 remaining) [2022-11-25 23:55:03,473 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (53 of 82 remaining) [2022-11-25 23:55:03,473 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 82 remaining) [2022-11-25 23:55:03,473 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 82 remaining) [2022-11-25 23:55:03,473 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (50 of 82 remaining) [2022-11-25 23:55:03,473 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 82 remaining) [2022-11-25 23:55:03,474 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 82 remaining) [2022-11-25 23:55:03,474 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 82 remaining) [2022-11-25 23:55:03,474 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 82 remaining) [2022-11-25 23:55:03,474 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 82 remaining) [2022-11-25 23:55:03,475 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 82 remaining) [2022-11-25 23:55:03,475 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 82 remaining) [2022-11-25 23:55:03,475 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 82 remaining) [2022-11-25 23:55:03,475 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 82 remaining) [2022-11-25 23:55:03,476 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 82 remaining) [2022-11-25 23:55:03,476 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 82 remaining) [2022-11-25 23:55:03,476 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 82 remaining) [2022-11-25 23:55:03,476 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 82 remaining) [2022-11-25 23:55:03,477 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 82 remaining) [2022-11-25 23:55:03,477 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 82 remaining) [2022-11-25 23:55:03,477 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 82 remaining) [2022-11-25 23:55:03,477 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 82 remaining) [2022-11-25 23:55:03,478 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 82 remaining) [2022-11-25 23:55:03,478 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 82 remaining) [2022-11-25 23:55:03,478 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 82 remaining) [2022-11-25 23:55:03,479 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 82 remaining) [2022-11-25 23:55:03,479 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 82 remaining) [2022-11-25 23:55:03,479 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 82 remaining) [2022-11-25 23:55:03,479 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 82 remaining) [2022-11-25 23:55:03,480 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 82 remaining) [2022-11-25 23:55:03,480 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 82 remaining) [2022-11-25 23:55:03,480 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 82 remaining) [2022-11-25 23:55:03,480 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 82 remaining) [2022-11-25 23:55:03,481 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 82 remaining) [2022-11-25 23:55:03,481 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 82 remaining) [2022-11-25 23:55:03,481 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 82 remaining) [2022-11-25 23:55:03,481 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 82 remaining) [2022-11-25 23:55:03,481 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 82 remaining) [2022-11-25 23:55:03,482 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 82 remaining) [2022-11-25 23:55:03,482 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 82 remaining) [2022-11-25 23:55:03,482 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 82 remaining) [2022-11-25 23:55:03,482 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (13 of 82 remaining) [2022-11-25 23:55:03,483 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 82 remaining) [2022-11-25 23:55:03,483 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 82 remaining) [2022-11-25 23:55:03,483 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 82 remaining) [2022-11-25 23:55:03,483 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 82 remaining) [2022-11-25 23:55:03,484 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 82 remaining) [2022-11-25 23:55:03,484 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 82 remaining) [2022-11-25 23:55:03,484 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 82 remaining) [2022-11-25 23:55:03,484 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 82 remaining) [2022-11-25 23:55:03,485 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONMEMORY_LEAK (4 of 82 remaining) [2022-11-25 23:55:03,485 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 82 remaining) [2022-11-25 23:55:03,485 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 82 remaining) [2022-11-25 23:55:03,485 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 82 remaining) [2022-11-25 23:55:03,486 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 82 remaining) [2022-11-25 23:55:03,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-25 23:55:03,486 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:55:03,487 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 23:55:03,487 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-25 23:55:03,571 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 23:55:03,575 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 23:55:03,575 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 245 places, 244 transitions, 530 flow [2022-11-25 23:55:03,576 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 245 places, 244 transitions, 530 flow [2022-11-25 23:55:03,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 245 places, 244 transitions, 530 flow [2022-11-25 23:55:03,651 INFO L130 PetriNetUnfolder]: 10/251 cut-off events. [2022-11-25 23:55:03,652 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-25 23:55:03,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272 conditions, 251 events. 10/251 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 877 event pairs, 0 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 265. Up to 8 conditions per place. [2022-11-25 23:55:03,672 INFO L119 LiptonReduction]: Number of co-enabled transitions 22680 [2022-11-25 23:55:16,943 INFO L134 LiptonReduction]: Checked pairs total: 155687 [2022-11-25 23:55:16,943 INFO L136 LiptonReduction]: Total number of compositions: 363 [2022-11-25 23:55:16,945 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 153 places, 145 transitions, 332 flow