./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83f34634-6072-4ae4-b6f5-ad3f44c5c896/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83f34634-6072-4ae4-b6f5-ad3f44c5c896/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83f34634-6072-4ae4-b6f5-ad3f44c5c896/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83f34634-6072-4ae4-b6f5-ad3f44c5c896/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83f34634-6072-4ae4-b6f5-ad3f44c5c896/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83f34634-6072-4ae4-b6f5-ad3f44c5c896/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b --- 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-2329fc7 [2022-12-14 09:59:09,546 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 09:59:09,547 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 09:59:09,567 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 09:59:09,567 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 09:59:09,568 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 09:59:09,570 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 09:59:09,572 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 09:59:09,573 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 09:59:09,574 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 09:59:09,575 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 09:59:09,576 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 09:59:09,577 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 09:59:09,578 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 09:59:09,579 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 09:59:09,580 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 09:59:09,581 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 09:59:09,582 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 09:59:09,584 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 09:59:09,585 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 09:59:09,587 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 09:59:09,588 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 09:59:09,589 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 09:59:09,590 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 09:59:09,594 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 09:59:09,594 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 09:59:09,595 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 09:59:09,595 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 09:59:09,596 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 09:59:09,597 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 09:59:09,597 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 09:59:09,598 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 09:59:09,599 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 09:59:09,599 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 09:59:09,600 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 09:59:09,600 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 09:59:09,601 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 09:59:09,601 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 09:59:09,601 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 09:59:09,602 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 09:59:09,602 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 09:59:09,603 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83f34634-6072-4ae4-b6f5-ad3f44c5c896/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 09:59:09,626 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 09:59:09,626 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 09:59:09,626 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 09:59:09,626 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 09:59:09,627 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 09:59:09,627 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 09:59:09,628 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 09:59:09,628 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 09:59:09,628 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 09:59:09,628 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 09:59:09,628 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 09:59:09,629 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 09:59:09,629 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 09:59:09,629 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 09:59:09,629 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 09:59:09,629 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 09:59:09,629 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 09:59:09,630 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 09:59:09,630 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 09:59:09,630 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 09:59:09,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 09:59:09,630 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 09:59:09,631 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 09:59:09,631 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 09:59:09,631 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 09:59:09,631 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 09:59:09,631 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 09:59:09,631 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 09:59:09,632 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 09:59:09,632 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 09:59:09,632 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 09:59:09,632 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 09:59:09,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:59:09,632 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 09:59:09,633 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 09:59:09,633 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 09:59:09,633 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 09:59:09,633 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 09:59:09,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 09:59:09,633 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 09:59:09,633 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 09:59:09,633 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_83f34634-6072-4ae4-b6f5-ad3f44c5c896/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83f34634-6072-4ae4-b6f5-ad3f44c5c896/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3de6ec2acea23c0ab47fbc2e02ad0931145060ca78b80531ef692b3505f9553b [2022-12-14 09:59:09,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 09:59:09,835 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 09:59:09,837 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 09:59:09,838 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 09:59:09,838 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 09:59:09,839 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83f34634-6072-4ae4-b6f5-ad3f44c5c896/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i [2022-12-14 09:59:12,389 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 09:59:12,604 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 09:59:12,604 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83f34634-6072-4ae4-b6f5-ad3f44c5c896/sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i [2022-12-14 09:59:12,616 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83f34634-6072-4ae4-b6f5-ad3f44c5c896/bin/utaipan-gh47qXpMRh/data/831fda5d7/5a9109f66d6f42d29f2b15acb7743704/FLAGdf4dca872 [2022-12-14 09:59:12,627 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83f34634-6072-4ae4-b6f5-ad3f44c5c896/bin/utaipan-gh47qXpMRh/data/831fda5d7/5a9109f66d6f42d29f2b15acb7743704 [2022-12-14 09:59:12,630 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 09:59:12,631 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 09:59:12,632 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 09:59:12,632 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 09:59:12,635 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 09:59:12,635 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:59:12" (1/1) ... [2022-12-14 09:59:12,636 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42221322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:59:12, skipping insertion in model container [2022-12-14 09:59:12,636 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:59:12" (1/1) ... [2022-12-14 09:59:12,642 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 09:59:12,679 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 09:59:13,002 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_83f34634-6072-4ae4-b6f5-ad3f44c5c896/sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i[47038,47051] [2022-12-14 09:59:13,025 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:59:13,035 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 09:59:13,062 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_83f34634-6072-4ae4-b6f5-ad3f44c5c896/sv-benchmarks/c/goblint-regression/28-race_reach_81-list_racing.i[47038,47051] [2022-12-14 09:59:13,071 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:59:13,107 INFO L208 MainTranslator]: Completed translation [2022-12-14 09:59:13,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:59:13 WrapperNode [2022-12-14 09:59:13,108 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 09:59:13,108 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 09:59:13,108 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 09:59:13,109 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 09:59:13,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:59:13" (1/1) ... [2022-12-14 09:59:13,126 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:59:13" (1/1) ... [2022-12-14 09:59:13,144 INFO L138 Inliner]: procedures = 278, calls = 54, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 204 [2022-12-14 09:59:13,145 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 09:59:13,145 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 09:59:13,145 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 09:59:13,146 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 09:59:13,152 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:59:13" (1/1) ... [2022-12-14 09:59:13,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:59:13" (1/1) ... [2022-12-14 09:59:13,156 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:59:13" (1/1) ... [2022-12-14 09:59:13,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:59:13" (1/1) ... [2022-12-14 09:59:13,162 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:59:13" (1/1) ... [2022-12-14 09:59:13,165 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:59:13" (1/1) ... [2022-12-14 09:59:13,167 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:59:13" (1/1) ... [2022-12-14 09:59:13,168 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:59:13" (1/1) ... [2022-12-14 09:59:13,171 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 09:59:13,171 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 09:59:13,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 09:59:13,172 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 09:59:13,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:59:13" (1/1) ... [2022-12-14 09:59:13,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:59:13,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83f34634-6072-4ae4-b6f5-ad3f44c5c896/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:59:13,194 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83f34634-6072-4ae4-b6f5-ad3f44c5c896/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 09:59:13,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83f34634-6072-4ae4-b6f5-ad3f44c5c896/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 09:59:13,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 09:59:13,222 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 09:59:13,222 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-12-14 09:59:13,222 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-12-14 09:59:13,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 09:59:13,223 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 09:59:13,223 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-12-14 09:59:13,223 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-12-14 09:59:13,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 09:59:13,223 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-14 09:59:13,223 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 09:59:13,223 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 09:59:13,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 09:59:13,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 09:59:13,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 09:59:13,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 09:59:13,225 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-14 09:59:13,347 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 09:59:13,349 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 09:59:13,640 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 09:59:13,649 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 09:59:13,649 INFO L300 CfgBuilder]: Removed 15 assume(true) statements. [2022-12-14 09:59:13,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:59:13 BoogieIcfgContainer [2022-12-14 09:59:13,652 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 09:59:13,654 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 09:59:13,654 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 09:59:13,657 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 09:59:13,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 09:59:12" (1/3) ... [2022-12-14 09:59:13,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13b9f7c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:59:13, skipping insertion in model container [2022-12-14 09:59:13,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:59:13" (2/3) ... [2022-12-14 09:59:13,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13b9f7c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:59:13, skipping insertion in model container [2022-12-14 09:59:13,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:59:13" (3/3) ... [2022-12-14 09:59:13,660 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_81-list_racing.i [2022-12-14 09:59:13,667 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-14 09:59:13,675 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 09:59:13,675 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 09:59:13,676 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 09:59:13,765 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-14 09:59:13,796 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 09:59:13,811 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 202 places, 220 transitions, 462 flow [2022-12-14 09:59:13,814 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 202 places, 220 transitions, 462 flow [2022-12-14 09:59:13,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 220 transitions, 462 flow [2022-12-14 09:59:13,936 INFO L130 PetriNetUnfolder]: 52/414 cut-off events. [2022-12-14 09:59:13,936 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2022-12-14 09:59:13,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 434 conditions, 414 events. 52/414 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1661 event pairs, 0 based on Foata normal form. 0/352 useless extension candidates. Maximal degree in co-relation 213. Up to 8 conditions per place. [2022-12-14 09:59:13,953 INFO L119 LiptonReduction]: Number of co-enabled transitions 14628 [2022-12-14 09:59:50,708 INFO L134 LiptonReduction]: Checked pairs total: 25553 [2022-12-14 09:59:50,708 INFO L136 LiptonReduction]: Total number of compositions: 184 [2022-12-14 09:59:50,714 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 52 places, 64 transitions, 150 flow [2022-12-14 09:59:50,779 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2075 states, 2066 states have (on average 3.249757986447241) internal successors, (6714), 2074 states have internal predecessors, (6714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:59:50,792 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 09:59:50,797 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2a93e7ed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 09:59:50,797 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-14 09:59:50,802 INFO L276 IsEmpty]: Start isEmpty. Operand has 2075 states, 2066 states have (on average 3.249757986447241) internal successors, (6714), 2074 states have internal predecessors, (6714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:59:50,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 09:59:50,806 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:59:50,807 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-12-14 09:59:50,807 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-14 09:59:50,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:59:50,811 INFO L85 PathProgramCache]: Analyzing trace with hash -202329557, now seen corresponding path program 1 times [2022-12-14 09:59:50,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:59:50,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610043272] [2022-12-14 09:59:50,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:59:50,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:59:50,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 09:59:50,914 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 09:59:50,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 09:59:50,949 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 09:59:50,950 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 09:59:50,951 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2022-12-14 09:59:50,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-12-14 09:59:50,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-14 09:59:50,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-12-14 09:59:50,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 09:59:50,955 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 09:59:50,957 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-14 09:59:50,957 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-14 09:59:51,001 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-12-14 09:59:51,004 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 09:59:51,005 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 307 places, 340 transitions, 728 flow [2022-12-14 09:59:51,005 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 307 places, 340 transitions, 728 flow [2022-12-14 09:59:51,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 307 places, 340 transitions, 728 flow [2022-12-14 09:59:51,205 INFO L130 PetriNetUnfolder]: 191/1219 cut-off events. [2022-12-14 09:59:51,205 INFO L131 PetriNetUnfolder]: For 72/100 co-relation queries the response was YES. [2022-12-14 09:59:51,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1316 conditions, 1219 events. 191/1219 cut-off events. For 72/100 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 7573 event pairs, 2 based on Foata normal form. 0/1029 useless extension candidates. Maximal degree in co-relation 769. Up to 32 conditions per place. [2022-12-14 09:59:51,269 INFO L119 LiptonReduction]: Number of co-enabled transitions 57408 [2022-12-14 10:00:33,708 INFO L134 LiptonReduction]: Checked pairs total: 112260 [2022-12-14 10:00:33,708 INFO L136 LiptonReduction]: Total number of compositions: 281 [2022-12-14 10:00:33,709 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 88 places, 114 transitions, 276 flow [2022-12-14 10:00:48,229 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 521614 states, 521575 states have (on average 5.615562479029862) internal successors, (2928937), 521613 states have internal predecessors, (2928937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:48,230 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 10:00:48,230 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2a93e7ed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 10:00:48,230 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-14 10:00:48,939 INFO L276 IsEmpty]: Start isEmpty. Operand has 521614 states, 521575 states have (on average 5.615562479029862) internal successors, (2928937), 521613 states have internal predecessors, (2928937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:48,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 10:00:48,941 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:00:48,941 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:00:48,942 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-14 10:00:48,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:00:48,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1453234765, now seen corresponding path program 1 times [2022-12-14 10:00:48,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:00:48,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013998742] [2022-12-14 10:00:48,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:00:48,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:00:48,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:00:49,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:00:49,048 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:00:49,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013998742] [2022-12-14 10:00:49,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013998742] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:00:49,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:00:49,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:00:49,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969907065] [2022-12-14 10:00:49,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:00:49,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:00:49,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:00:49,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:00:49,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:00:49,888 INFO L87 Difference]: Start difference. First operand has 521614 states, 521575 states have (on average 5.615562479029862) internal successors, (2928937), 521613 states have internal predecessors, (2928937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:00:56,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:00:56,731 INFO L93 Difference]: Finished difference Result 519428 states and 2365521 transitions. [2022-12-14 10:00:56,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:00:56,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-12-14 10:00:56,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:00:59,533 INFO L225 Difference]: With dead ends: 519428 [2022-12-14 10:00:59,533 INFO L226 Difference]: Without dead ends: 372072 [2022-12-14 10:00:59,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:00:59,536 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 11 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 10:00:59,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 32 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 10:01:00,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372072 states. [2022-12-14 10:01:10,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372072 to 372072. [2022-12-14 10:01:10,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372072 states, 372037 states have (on average 4.549969492281682) internal successors, (1692757), 372071 states have internal predecessors, (1692757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:01:13,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372072 states to 372072 states and 1692757 transitions. [2022-12-14 10:01:13,023 INFO L78 Accepts]: Start accepts. Automaton has 372072 states and 1692757 transitions. Word has length 9 [2022-12-14 10:01:13,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:01:13,023 INFO L495 AbstractCegarLoop]: Abstraction has 372072 states and 1692757 transitions. [2022-12-14 10:01:13,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:01:13,023 INFO L276 IsEmpty]: Start isEmpty. Operand 372072 states and 1692757 transitions. [2022-12-14 10:01:13,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 10:01:13,024 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:01:13,024 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-14 10:01:13,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 10:01:13,024 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-14 10:01:13,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:01:13,024 INFO L85 PathProgramCache]: Analyzing trace with hash -921688712, now seen corresponding path program 1 times [2022-12-14 10:01:13,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:01:13,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698159339] [2022-12-14 10:01:13,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:01:13,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:01:13,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 10:01:13,042 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 10:01:13,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 10:01:13,059 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 10:01:13,060 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 10:01:13,060 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-12-14 10:01:13,060 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-12-14 10:01:13,060 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-12-14 10:01:13,060 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-12-14 10:01:13,060 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-12-14 10:01:13,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 10:01:13,061 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-14 10:01:13,061 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-14 10:01:13,061 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-14 10:01:13,098 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2022-12-14 10:01:13,102 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 10:01:13,102 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 412 places, 460 transitions, 998 flow [2022-12-14 10:01:13,103 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 412 places, 460 transitions, 998 flow [2022-12-14 10:01:13,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 412 places, 460 transitions, 998 flow [2022-12-14 10:01:14,146 INFO L130 PetriNetUnfolder]: 664/3388 cut-off events. [2022-12-14 10:01:14,146 INFO L131 PetriNetUnfolder]: For 419/479 co-relation queries the response was YES. [2022-12-14 10:01:14,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3839 conditions, 3388 events. 664/3388 cut-off events. For 419/479 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 26090 event pairs, 64 based on Foata normal form. 0/2882 useless extension candidates. Maximal degree in co-relation 2215. Up to 192 conditions per place. [2022-12-14 10:01:14,409 INFO L119 LiptonReduction]: Number of co-enabled transitions 128340 [2022-12-14 10:03:07,441 INFO L134 LiptonReduction]: Checked pairs total: 259576 [2022-12-14 10:03:07,442 INFO L136 LiptonReduction]: Total number of compositions: 376 [2022-12-14 10:03:07,443 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 120 places, 159 transitions, 396 flow