./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/weaver/bench-exp2x3.wvr.c --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_b3ea8ad2-e611-4a16-8b11-3c2935c53bec/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ea8ad2-e611-4a16-8b11-3c2935c53bec/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_b3ea8ad2-e611-4a16-8b11-3c2935c53bec/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ea8ad2-e611-4a16-8b11-3c2935c53bec/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/bench-exp2x3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ea8ad2-e611-4a16-8b11-3c2935c53bec/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_b3ea8ad2-e611-4a16-8b11-3c2935c53bec/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 f25d9c7e70f7f3d19e85c7cfc6427443102f5451f704dd6a19dd9a78d021a612 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 13:26:00,568 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 13:26:00,643 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ea8ad2-e611-4a16-8b11-3c2935c53bec/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DataRace-32bit-Taipan_Default.epf [2023-12-02 13:26:00,648 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 13:26:00,649 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 13:26:00,673 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 13:26:00,674 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 13:26:00,674 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 13:26:00,675 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 13:26:00,675 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 13:26:00,676 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 13:26:00,676 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 13:26:00,677 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 13:26:00,677 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 13:26:00,678 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 13:26:00,678 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 13:26:00,679 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 13:26:00,679 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 13:26:00,680 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 13:26:00,680 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 13:26:00,681 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 13:26:00,684 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 13:26:00,685 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 13:26:00,685 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 13:26:00,686 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 13:26:00,686 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 13:26:00,687 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 13:26:00,687 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 13:26:00,687 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 13:26:00,688 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 13:26:00,688 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 13:26:00,688 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-12-02 13:26:00,689 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 13:26:00,689 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 13:26:00,689 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 13:26:00,689 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 13:26:00,689 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 13:26:00,690 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 13:26:00,690 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:26:00,690 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 13:26:00,690 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 13:26:00,691 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 13:26:00,691 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 13:26:00,691 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 13:26:00,691 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 13:26:00,691 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 13:26:00,692 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 13:26:00,692 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 13:26:00,692 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_b3ea8ad2-e611-4a16-8b11-3c2935c53bec/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ea8ad2-e611-4a16-8b11-3c2935c53bec/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f25d9c7e70f7f3d19e85c7cfc6427443102f5451f704dd6a19dd9a78d021a612 [2023-12-02 13:26:00,919 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:26:00,939 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:26:00,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:26:00,943 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:26:00,944 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:26:00,945 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ea8ad2-e611-4a16-8b11-3c2935c53bec/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/weaver/bench-exp2x3.wvr.c [2023-12-02 13:26:03,693 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:26:03,867 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:26:03,867 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ea8ad2-e611-4a16-8b11-3c2935c53bec/sv-benchmarks/c/weaver/bench-exp2x3.wvr.c [2023-12-02 13:26:03,876 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ea8ad2-e611-4a16-8b11-3c2935c53bec/bin/utaipan-verify-nQ1chXbOIh/data/a6d2cc643/8aa2bb97f6d748e9ba9329e70b8a17e1/FLAG75024c7d0 [2023-12-02 13:26:03,891 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ea8ad2-e611-4a16-8b11-3c2935c53bec/bin/utaipan-verify-nQ1chXbOIh/data/a6d2cc643/8aa2bb97f6d748e9ba9329e70b8a17e1 [2023-12-02 13:26:03,893 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:26:03,895 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:26:03,896 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:26:03,897 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:26:03,902 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:26:03,903 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:26:03" (1/1) ... [2023-12-02 13:26:03,904 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e73562a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:03, skipping insertion in model container [2023-12-02 13:26:03,904 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:26:03" (1/1) ... [2023-12-02 13:26:03,929 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:26:04,114 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:26:04,125 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 13:26:04,155 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:26:04,171 INFO L206 MainTranslator]: Completed translation [2023-12-02 13:26:04,171 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:04 WrapperNode [2023-12-02 13:26:04,172 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:26:04,173 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 13:26:04,173 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 13:26:04,173 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 13:26:04,181 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:04" (1/1) ... [2023-12-02 13:26:04,216 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:04" (1/1) ... [2023-12-02 13:26:04,256 INFO L138 Inliner]: procedures = 20, calls = 33, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 173 [2023-12-02 13:26:04,264 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 13:26:04,265 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 13:26:04,265 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 13:26:04,265 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 13:26:04,274 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:04" (1/1) ... [2023-12-02 13:26:04,275 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:04" (1/1) ... [2023-12-02 13:26:04,282 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:04" (1/1) ... [2023-12-02 13:26:04,282 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:04" (1/1) ... [2023-12-02 13:26:04,298 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:04" (1/1) ... [2023-12-02 13:26:04,302 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:04" (1/1) ... [2023-12-02 13:26:04,305 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:04" (1/1) ... [2023-12-02 13:26:04,307 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:04" (1/1) ... [2023-12-02 13:26:04,310 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 13:26:04,311 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 13:26:04,311 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 13:26:04,311 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 13:26:04,312 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:04" (1/1) ... [2023-12-02 13:26:04,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:26:04,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ea8ad2-e611-4a16-8b11-3c2935c53bec/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:26:04,341 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ea8ad2-e611-4a16-8b11-3c2935c53bec/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 13:26:04,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ea8ad2-e611-4a16-8b11-3c2935c53bec/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 13:26:04,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 13:26:04,374 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-02 13:26:04,374 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-02 13:26:04,374 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-02 13:26:04,374 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-02 13:26:04,374 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-12-02 13:26:04,374 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-12-02 13:26:04,374 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-12-02 13:26:04,375 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-12-02 13:26:04,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 13:26:04,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 13:26:04,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 13:26:04,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 13:26:04,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 13:26:04,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 13:26:04,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 13:26:04,377 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 13:26:04,492 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 13:26:04,494 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 13:26:04,849 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 13:26:04,864 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 13:26:04,865 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-12-02 13:26:04,866 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:26:04 BoogieIcfgContainer [2023-12-02 13:26:04,866 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 13:26:04,869 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 13:26:04,869 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 13:26:04,872 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 13:26:04,872 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:26:03" (1/3) ... [2023-12-02 13:26:04,873 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71946b29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:26:04, skipping insertion in model container [2023-12-02 13:26:04,873 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:26:04" (2/3) ... [2023-12-02 13:26:04,873 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71946b29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:26:04, skipping insertion in model container [2023-12-02 13:26:04,873 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:26:04" (3/3) ... [2023-12-02 13:26:04,874 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp2x3.wvr.c [2023-12-02 13:26:04,883 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-12-02 13:26:04,891 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 13:26:04,891 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 39 error locations. [2023-12-02 13:26:04,891 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-02 13:26:04,991 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-12-02 13:26:05,028 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 298 places, 299 transitions, 626 flow [2023-12-02 13:27:43,619 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2989308 states, 2986444 states have (on average 5.015339648089835) internal successors, (14978031), 2989307 states have internal predecessors, (14978031), 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 13:27:43,641 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 13:27:43,656 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;@40ff7601, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 13:27:43,656 INFO L358 AbstractCegarLoop]: Starting to check reachability of 63 error locations. [2023-12-02 13:27:48,833 INFO L276 IsEmpty]: Start isEmpty. Operand has 2989308 states, 2986444 states have (on average 5.015339648089835) internal successors, (14978031), 2989307 states have internal predecessors, (14978031), 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 13:27:48,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-02 13:27:48,839 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:27:48,839 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] [2023-12-02 13:27:48,840 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 59 more)] === [2023-12-02 13:27:48,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:27:48,845 INFO L85 PathProgramCache]: Analyzing trace with hash -324477368, now seen corresponding path program 1 times [2023-12-02 13:27:48,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:27:48,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178068813] [2023-12-02 13:27:48,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:27:48,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:27:48,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:27:49,053 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 13:27:49,053 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:27:49,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178068813] [2023-12-02 13:27:49,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178068813] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:27:49,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:27:49,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:27:49,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455069863] [2023-12-02 13:27:49,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:27:49,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:27:49,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:27:49,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:27:49,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:27:59,685 INFO L87 Difference]: Start difference. First operand has 2989308 states, 2986444 states have (on average 5.015339648089835) internal successors, (14978031), 2989307 states have internal predecessors, (14978031), 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, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 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)