./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 0e0057cc 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_8215a639-90e5-4180-84cd-411bfb4c90ec/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8215a639-90e5-4180-84cd-411bfb4c90ec/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8215a639-90e5-4180-84cd-411bfb4c90ec/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8215a639-90e5-4180-84cd-411bfb4c90ec/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8215a639-90e5-4180-84cd-411bfb4c90ec/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8215a639-90e5-4180-84cd-411bfb4c90ec/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7be9b237ca4111a24c77c67cce26f31a788af03984af96dee7353f79c789c2c1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 14:56:09,065 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 14:56:09,132 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8215a639-90e5-4180-84cd-411bfb4c90ec/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DataRace-32bit-Taipan_Default.epf [2023-12-02 14:56:09,136 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 14:56:09,137 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 14:56:09,160 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 14:56:09,161 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 14:56:09,161 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 14:56:09,162 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 14:56:09,163 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 14:56:09,163 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 14:56:09,164 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 14:56:09,165 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 14:56:09,165 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 14:56:09,166 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 14:56:09,166 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 14:56:09,167 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 14:56:09,167 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 14:56:09,168 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 14:56:09,168 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 14:56:09,169 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 14:56:09,169 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 14:56:09,170 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 14:56:09,170 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 14:56:09,171 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 14:56:09,171 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 14:56:09,172 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 14:56:09,172 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 14:56:09,173 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 14:56:09,173 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 14:56:09,174 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 14:56:09,174 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-12-02 14:56:09,174 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 14:56:09,175 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 14:56:09,175 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 14:56:09,175 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 14:56:09,176 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 14:56:09,176 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 14:56:09,176 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:56:09,176 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 14:56:09,176 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 14:56:09,177 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 14:56:09,177 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 14:56:09,177 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 14:56:09,177 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 14:56:09,178 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 14:56:09,178 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 14:56:09,178 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 14:56:09,178 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8215a639-90e5-4180-84cd-411bfb4c90ec/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8215a639-90e5-4180-84cd-411bfb4c90ec/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7be9b237ca4111a24c77c67cce26f31a788af03984af96dee7353f79c789c2c1 [2023-12-02 14:56:09,409 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 14:56:09,433 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 14:56:09,436 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 14:56:09,438 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 14:56:09,438 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 14:56:09,440 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8215a639-90e5-4180-84cd-411bfb4c90ec/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i [2023-12-02 14:56:12,354 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 14:56:12,616 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 14:56:12,617 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8215a639-90e5-4180-84cd-411bfb4c90ec/sv-benchmarks/c/goblint-regression/28-race_reach_87-lists_racefree.i [2023-12-02 14:56:12,638 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8215a639-90e5-4180-84cd-411bfb4c90ec/bin/utaipan-verify-nQ1chXbOIh/data/488a411cb/ff17697502484eb29a58c5d666bb7b1b/FLAGc20d15fb5 [2023-12-02 14:56:12,654 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8215a639-90e5-4180-84cd-411bfb4c90ec/bin/utaipan-verify-nQ1chXbOIh/data/488a411cb/ff17697502484eb29a58c5d666bb7b1b [2023-12-02 14:56:12,657 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 14:56:12,659 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 14:56:12,661 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 14:56:12,661 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 14:56:12,667 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 14:56:12,668 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:56:12" (1/1) ... [2023-12-02 14:56:12,670 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c5eb5dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:12, skipping insertion in model container [2023-12-02 14:56:12,670 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:56:12" (1/1) ... [2023-12-02 14:56:12,733 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 14:56:13,307 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:56:13,377 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 14:56:13,440 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:56:13,544 INFO L206 MainTranslator]: Completed translation [2023-12-02 14:56:13,545 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:13 WrapperNode [2023-12-02 14:56:13,545 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 14:56:13,546 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 14:56:13,547 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 14:56:13,547 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 14:56:13,553 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:13" (1/1) ... [2023-12-02 14:56:13,577 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:13" (1/1) ... [2023-12-02 14:56:13,612 INFO L138 Inliner]: procedures = 279, calls = 69, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 374 [2023-12-02 14:56:13,613 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 14:56:13,613 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 14:56:13,613 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 14:56:13,614 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 14:56:13,621 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:13" (1/1) ... [2023-12-02 14:56:13,621 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:13" (1/1) ... [2023-12-02 14:56:13,629 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:13" (1/1) ... [2023-12-02 14:56:13,629 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:13" (1/1) ... [2023-12-02 14:56:13,654 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:13" (1/1) ... [2023-12-02 14:56:13,660 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:13" (1/1) ... [2023-12-02 14:56:13,664 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:13" (1/1) ... [2023-12-02 14:56:13,667 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:13" (1/1) ... [2023-12-02 14:56:13,675 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 14:56:13,676 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 14:56:13,676 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 14:56:13,676 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 14:56:13,677 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:13" (1/1) ... [2023-12-02 14:56:13,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:56:13,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8215a639-90e5-4180-84cd-411bfb4c90ec/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:56:13,726 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8215a639-90e5-4180-84cd-411bfb4c90ec/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 14:56:13,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8215a639-90e5-4180-84cd-411bfb4c90ec/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 14:56:13,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 14:56:13,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 14:56:13,762 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-12-02 14:56:13,763 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-12-02 14:56:13,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 14:56:13,763 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-12-02 14:56:13,763 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 14:56:13,763 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-12-02 14:56:13,763 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-12-02 14:56:13,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 14:56:13,764 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-12-02 14:56:13,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 14:56:13,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 14:56:13,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 14:56:13,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 14:56:13,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 14:56:13,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 14:56:13,767 WARN L213 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-02 14:56:13,962 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 14:56:13,965 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 14:56:14,599 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 14:56:14,641 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 14:56:14,641 INFO L309 CfgBuilder]: Removed 16 assume(true) statements. [2023-12-02 14:56:14,643 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:56:14 BoogieIcfgContainer [2023-12-02 14:56:14,643 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 14:56:14,647 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 14:56:14,647 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 14:56:14,651 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 14:56:14,651 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:56:12" (1/3) ... [2023-12-02 14:56:14,652 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fca3abd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:56:14, skipping insertion in model container [2023-12-02 14:56:14,652 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:13" (2/3) ... [2023-12-02 14:56:14,652 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fca3abd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:56:14, skipping insertion in model container [2023-12-02 14:56:14,653 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:56:14" (3/3) ... [2023-12-02 14:56:14,654 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_87-lists_racefree.i [2023-12-02 14:56:14,664 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-12-02 14:56:14,677 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 14:56:14,677 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2023-12-02 14:56:14,678 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-02 14:56:14,844 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-12-02 14:56:14,885 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 378 places, 401 transitions, 822 flow [2023-12-02 14:56:26,877 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 571288 states, 570841 states have (on average 3.1321243568699515) internal successors, (1787945), 571287 states have internal predecessors, (1787945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:56:26,898 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 14:56:26,905 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=LoopHeads, 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;@761c8a25, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 14:56:26,905 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2023-12-02 14:56:27,554 INFO L276 IsEmpty]: Start isEmpty. Operand has 571288 states, 570841 states have (on average 3.1321243568699515) internal successors, (1787945), 571287 states have internal predecessors, (1787945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:56:27,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-02 14:56:27,564 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:56:27,564 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:56:27,565 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2023-12-02 14:56:27,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:56:27,571 INFO L85 PathProgramCache]: Analyzing trace with hash 2011303613, now seen corresponding path program 1 times [2023-12-02 14:56:27,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:56:27,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582179281] [2023-12-02 14:56:27,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:56:27,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:56:27,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:56:28,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:56:28,297 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:56:28,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582179281] [2023-12-02 14:56:28,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582179281] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:56:28,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:56:28,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 14:56:28,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975908270] [2023-12-02 14:56:28,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:56:28,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 14:56:28,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:56:28,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 14:56:28,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-02 14:56:29,138 INFO L87 Difference]: Start difference. First operand has 571288 states, 570841 states have (on average 3.1321243568699515) internal successors, (1787945), 571287 states have internal predecessors, (1787945), 0 states have call successors, (0), 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 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:56:35,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:56:35,857 INFO L93 Difference]: Finished difference Result 560040 states and 1655943 transitions. [2023-12-02 14:56:35,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 14:56:35,874 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2023-12-02 14:56:35,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:56:38,279 INFO L225 Difference]: With dead ends: 560040 [2023-12-02 14:56:38,280 INFO L226 Difference]: Without dead ends: 556950 [2023-12-02 14:56:38,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-02 14:56:38,286 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 3 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 14:56:38,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 833 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 14:56:39,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556950 states. [2023-12-02 14:56:52,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556950 to 556950. [2023-12-02 14:56:53,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556950 states, 556365 states have (on average 2.9601916008375797) internal successors, (1646947), 556949 states have internal predecessors, (1646947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:56:55,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556950 states to 556950 states and 1646947 transitions. [2023-12-02 14:56:55,975 INFO L78 Accepts]: Start accepts. Automaton has 556950 states and 1646947 transitions. Word has length 44 [2023-12-02 14:56:55,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:56:55,976 INFO L495 AbstractCegarLoop]: Abstraction has 556950 states and 1646947 transitions. [2023-12-02 14:56:55,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:56:55,977 INFO L276 IsEmpty]: Start isEmpty. Operand 556950 states and 1646947 transitions. [2023-12-02 14:56:55,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-02 14:56:55,979 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:56:55,979 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:56:55,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 14:56:55,980 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2023-12-02 14:56:55,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:56:55,981 INFO L85 PathProgramCache]: Analyzing trace with hash -348481980, now seen corresponding path program 1 times [2023-12-02 14:56:55,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:56:55,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359584748] [2023-12-02 14:56:55,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:56:55,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:56:56,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:56:56,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:56:56,050 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:56:56,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359584748] [2023-12-02 14:56:56,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359584748] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:56:56,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:56:56,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:56:56,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303355738] [2023-12-02 14:56:56,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:56:56,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:56:56,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:56:56,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:56:56,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:56:56,054 INFO L87 Difference]: Start difference. First operand 556950 states and 1646947 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:57:00,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:57:00,225 INFO L93 Difference]: Finished difference Result 556988 states and 1646985 transitions. [2023-12-02 14:57:00,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:57:00,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2023-12-02 14:57:00,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:57:02,952 INFO L225 Difference]: With dead ends: 556988 [2023-12-02 14:57:02,952 INFO L226 Difference]: Without dead ends: 556988 [2023-12-02 14:57:02,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:57:02,954 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 37 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:57:02,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 692 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:57:04,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556988 states. [2023-12-02 14:57:16,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556988 to 556951. [2023-12-02 14:57:17,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556951 states, 556366 states have (on average 2.96018807763235) internal successors, (1646948), 556950 states have internal predecessors, (1646948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:57:20,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556951 states to 556951 states and 1646948 transitions. [2023-12-02 14:57:20,175 INFO L78 Accepts]: Start accepts. Automaton has 556951 states and 1646948 transitions. Word has length 47 [2023-12-02 14:57:20,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:57:20,176 INFO L495 AbstractCegarLoop]: Abstraction has 556951 states and 1646948 transitions. [2023-12-02 14:57:20,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:57:20,177 INFO L276 IsEmpty]: Start isEmpty. Operand 556951 states and 1646948 transitions. [2023-12-02 14:57:20,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-02 14:57:20,178 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:57:20,178 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:57:20,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 14:57:20,179 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2023-12-02 14:57:20,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:57:20,180 INFO L85 PathProgramCache]: Analyzing trace with hash -216082063, now seen corresponding path program 1 times [2023-12-02 14:57:20,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:57:20,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590245104] [2023-12-02 14:57:20,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:57:20,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:57:20,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:57:20,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:57:20,518 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:57:20,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590245104] [2023-12-02 14:57:20,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590245104] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:57:20,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:57:20,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 14:57:20,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871502035] [2023-12-02 14:57:20,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:57:20,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 14:57:20,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:57:20,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 14:57:20,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-02 14:57:20,522 INFO L87 Difference]: Start difference. First operand 556951 states and 1646948 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:57:24,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:57:24,393 INFO L93 Difference]: Finished difference Result 556950 states and 1646947 transitions. [2023-12-02 14:57:24,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 14:57:24,394 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2023-12-02 14:57:24,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:57:27,123 INFO L225 Difference]: With dead ends: 556950 [2023-12-02 14:57:27,123 INFO L226 Difference]: Without dead ends: 556950 [2023-12-02 14:57:27,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-02 14:57:27,125 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 2 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1071 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 14:57:27,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1071 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 14:57:28,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556950 states. [2023-12-02 14:57:40,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556950 to 556950. [2023-12-02 14:57:40,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556950 states, 556366 states have (on average 2.960186280254365) internal successors, (1646947), 556949 states have internal predecessors, (1646947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:57:44,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556950 states to 556950 states and 1646947 transitions. [2023-12-02 14:57:44,069 INFO L78 Accepts]: Start accepts. Automaton has 556950 states and 1646947 transitions. Word has length 52 [2023-12-02 14:57:44,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:57:44,070 INFO L495 AbstractCegarLoop]: Abstraction has 556950 states and 1646947 transitions. [2023-12-02 14:57:44,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:57:44,071 INFO L276 IsEmpty]: Start isEmpty. Operand 556950 states and 1646947 transitions. [2023-12-02 14:57:44,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-02 14:57:44,072 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:57:44,072 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:57:44,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 14:57:44,073 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2023-12-02 14:57:44,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:57:44,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1364110039, now seen corresponding path program 1 times [2023-12-02 14:57:44,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:57:44,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012515903] [2023-12-02 14:57:44,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:57:44,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:57:44,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:57:44,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:57:44,471 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:57:44,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012515903] [2023-12-02 14:57:44,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012515903] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:57:44,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:57:44,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 14:57:44,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864834778] [2023-12-02 14:57:44,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:57:44,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 14:57:44,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:57:44,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 14:57:44,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-02 14:57:44,474 INFO L87 Difference]: Start difference. First operand 556950 states and 1646947 transitions. Second operand has 6 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:57:48,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:57:48,454 INFO L93 Difference]: Finished difference Result 556949 states and 1646946 transitions. [2023-12-02 14:57:48,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 14:57:48,455 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2023-12-02 14:57:48,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:57:50,423 INFO L225 Difference]: With dead ends: 556949 [2023-12-02 14:57:50,424 INFO L226 Difference]: Without dead ends: 556949 [2023-12-02 14:57:50,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-02 14:57:50,425 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 3 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 14:57:50,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 583 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 14:57:52,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556949 states.