./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b2be58-155f-4b2c-b287-126f668934a9/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b2be58-155f-4b2c-b287-126f668934a9/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b2be58-155f-4b2c-b287-126f668934a9/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b2be58-155f-4b2c-b287-126f668934a9/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b2be58-155f-4b2c-b287-126f668934a9/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b2be58-155f-4b2c-b287-126f668934a9/bin/uautomizer-verify-84ZbGMXZE1 --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 387879bf92b16ead997b40b3e249348f8a6b399496756f9bc3c41b6dc3c21353 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 06:01:59,698 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 06:01:59,765 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b2be58-155f-4b2c-b287-126f668934a9/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-12-02 06:01:59,771 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 06:01:59,771 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 06:01:59,797 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 06:01:59,797 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 06:01:59,797 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 06:01:59,798 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 06:01:59,798 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 06:01:59,798 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 06:01:59,799 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 06:01:59,799 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 06:01:59,799 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 06:01:59,799 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 06:01:59,799 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 06:01:59,799 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 06:01:59,799 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 06:01:59,799 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 06:01:59,799 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 06:01:59,800 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 06:01:59,800 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 06:01:59,800 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-12-02 06:01:59,800 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 06:01:59,800 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 06:01:59,800 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 06:01:59,800 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 06:01:59,800 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 06:01:59,800 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 06:01:59,800 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:01:59,801 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:01:59,801 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:01:59,801 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 06:01:59,801 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:01:59,801 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:01:59,801 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:01:59,801 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 06:01:59,801 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 06:01:59,801 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 06:01:59,802 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 06:01:59,802 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 06:01:59,802 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 06:01:59,802 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 06:01:59,802 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 06:01:59,802 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 06:01:59,802 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 06:01:59,802 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_06b2be58-155f-4b2c-b287-126f668934a9/bin/uautomizer-verify-84ZbGMXZE1 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 -> Automizer 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 -> 387879bf92b16ead997b40b3e249348f8a6b399496756f9bc3c41b6dc3c21353 [2024-12-02 06:02:00,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 06:02:00,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 06:02:00,095 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 06:02:00,096 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 06:02:00,096 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 06:02:00,098 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b2be58-155f-4b2c-b287-126f668934a9/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2024-12-02 06:02:03,448 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b2be58-155f-4b2c-b287-126f668934a9/bin/uautomizer-verify-84ZbGMXZE1/data/5784e2721/3c0276d3744042a58b0fd2d02dce427f/FLAG18f7a1c35 [2024-12-02 06:02:03,716 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 06:02:03,717 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b2be58-155f-4b2c-b287-126f668934a9/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2024-12-02 06:02:03,725 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b2be58-155f-4b2c-b287-126f668934a9/bin/uautomizer-verify-84ZbGMXZE1/data/5784e2721/3c0276d3744042a58b0fd2d02dce427f/FLAG18f7a1c35 [2024-12-02 06:02:03,742 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b2be58-155f-4b2c-b287-126f668934a9/bin/uautomizer-verify-84ZbGMXZE1/data/5784e2721/3c0276d3744042a58b0fd2d02dce427f [2024-12-02 06:02:03,744 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 06:02:03,746 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 06:02:03,747 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 06:02:03,747 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 06:02:03,751 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 06:02:03,752 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:02:03" (1/1) ... [2024-12-02 06:02:03,753 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@165e40a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:02:03, skipping insertion in model container [2024-12-02 06:02:03,753 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:02:03" (1/1) ... [2024-12-02 06:02:03,768 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 06:02:03,947 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:02:03,958 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 06:02:03,988 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:02:04,003 INFO L204 MainTranslator]: Completed translation [2024-12-02 06:02:04,003 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:02:04 WrapperNode [2024-12-02 06:02:04,004 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 06:02:04,005 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 06:02:04,005 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 06:02:04,005 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 06:02:04,012 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:02:04" (1/1) ... [2024-12-02 06:02:04,020 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:02:04" (1/1) ... [2024-12-02 06:02:04,050 INFO L138 Inliner]: procedures = 23, calls = 23, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 168 [2024-12-02 06:02:04,050 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 06:02:04,051 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 06:02:04,051 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 06:02:04,051 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 06:02:04,058 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:02:04" (1/1) ... [2024-12-02 06:02:04,058 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:02:04" (1/1) ... [2024-12-02 06:02:04,062 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:02:04" (1/1) ... [2024-12-02 06:02:04,062 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:02:04" (1/1) ... [2024-12-02 06:02:04,071 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:02:04" (1/1) ... [2024-12-02 06:02:04,073 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:02:04" (1/1) ... [2024-12-02 06:02:04,077 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:02:04" (1/1) ... [2024-12-02 06:02:04,079 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:02:04" (1/1) ... [2024-12-02 06:02:04,081 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:02:04" (1/1) ... [2024-12-02 06:02:04,084 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 06:02:04,085 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 06:02:04,085 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 06:02:04,085 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 06:02:04,086 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:02:04" (1/1) ... [2024-12-02 06:02:04,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:02:04,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b2be58-155f-4b2c-b287-126f668934a9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:02:04,116 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b2be58-155f-4b2c-b287-126f668934a9/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 06:02:04,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b2be58-155f-4b2c-b287-126f668934a9/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 06:02:04,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 06:02:04,149 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-12-02 06:02:04,149 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-12-02 06:02:04,149 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-12-02 06:02:04,149 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-12-02 06:02:04,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-12-02 06:02:04,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-12-02 06:02:04,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 06:02:04,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 06:02:04,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 06:02:04,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-12-02 06:02:04,152 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-12-02 06:02:04,263 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 06:02:04,265 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 06:02:04,645 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 06:02:04,645 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 06:02:04,661 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 06:02:04,662 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-12-02 06:02:04,662 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:02:04 BoogieIcfgContainer [2024-12-02 06:02:04,662 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 06:02:04,665 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 06:02:04,665 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 06:02:04,671 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 06:02:04,671 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:02:03" (1/3) ... [2024-12-02 06:02:04,672 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18d64cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:02:04, skipping insertion in model container [2024-12-02 06:02:04,672 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:02:04" (2/3) ... [2024-12-02 06:02:04,673 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18d64cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:02:04, skipping insertion in model container [2024-12-02 06:02:04,673 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:02:04" (3/3) ... [2024-12-02 06:02:04,674 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-bad-counter-queue.wvr.c [2024-12-02 06:02:04,693 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 06:02:04,694 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-bad-counter-queue.wvr.c that has 3 procedures, 209 locations, 1 initial locations, 3 loop locations, and 10 error locations. [2024-12-02 06:02:04,695 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 06:02:04,806 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-12-02 06:02:04,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 215 places, 221 transitions, 456 flow [2024-12-02 06:02:04,965 INFO L124 PetriNetUnfolderBase]: 13/219 cut-off events. [2024-12-02 06:02:04,968 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-12-02 06:02:04,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 219 events. 13/219 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 325 event pairs, 0 based on Foata normal form. 0/196 useless extension candidates. Maximal degree in co-relation 145. Up to 2 conditions per place. [2024-12-02 06:02:04,976 INFO L82 GeneralOperation]: Start removeDead. Operand has 215 places, 221 transitions, 456 flow [2024-12-02 06:02:04,982 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 197 places, 202 transitions, 413 flow [2024-12-02 06:02:04,992 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 06:02:05,005 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, 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;@744da303, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 06:02:05,006 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-12-02 06:02:05,012 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 06:02:05,012 INFO L124 PetriNetUnfolderBase]: 0/18 cut-off events. [2024-12-02 06:02:05,012 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 06:02:05,012 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:02:05,013 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:02:05,014 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-12-02 06:02:05,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:02:05,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1881209190, now seen corresponding path program 1 times [2024-12-02 06:02:05,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:02:05,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667864754] [2024-12-02 06:02:05,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:02:05,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:02:05,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:02:05,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:02:05,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:02:05,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667864754] [2024-12-02 06:02:05,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667864754] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:02:05,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:02:05,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 06:02:05,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157355232] [2024-12-02 06:02:05,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:02:05,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:02:05,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:02:05,209 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:02:05,209 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:02:05,257 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 221 [2024-12-02 06:02:05,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 202 transitions, 413 flow. Second operand has 3 states, 3 states have (on average 197.33333333333334) internal successors, (592), 3 states have internal predecessors, (592), 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) [2024-12-02 06:02:05,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 06:02:05,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 221 [2024-12-02 06:02:05,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 06:02:05,370 INFO L124 PetriNetUnfolderBase]: 8/298 cut-off events. [2024-12-02 06:02:05,370 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-12-02 06:02:05,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 298 events. 8/298 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 769 event pairs, 3 based on Foata normal form. 11/278 useless extension candidates. Maximal degree in co-relation 229. Up to 18 conditions per place. [2024-12-02 06:02:05,375 INFO L140 encePairwiseOnDemand]: 209/221 looper letters, 9 selfloop transitions, 2 changer transitions 2/192 dead transitions. [2024-12-02 06:02:05,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 192 transitions, 415 flow [2024-12-02 06:02:05,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:02:05,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 06:02:05,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 609 transitions. [2024-12-02 06:02:05,394 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.918552036199095 [2024-12-02 06:02:05,395 INFO L175 Difference]: Start difference. First operand has 197 places, 202 transitions, 413 flow. Second operand 3 states and 609 transitions. [2024-12-02 06:02:05,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 192 transitions, 415 flow [2024-12-02 06:02:05,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 192 transitions, 410 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-12-02 06:02:05,408 INFO L231 Difference]: Finished difference. Result has 195 places, 190 transitions, 388 flow [2024-12-02 06:02:05,411 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=388, PETRI_PLACES=195, PETRI_TRANSITIONS=190} [2024-12-02 06:02:05,416 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, -2 predicate places. [2024-12-02 06:02:05,416 INFO L471 AbstractCegarLoop]: Abstraction has has 195 places, 190 transitions, 388 flow [2024-12-02 06:02:05,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 197.33333333333334) internal successors, (592), 3 states have internal predecessors, (592), 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) [2024-12-02 06:02:05,417 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:02:05,417 INFO L206 CegarLoopForPetriNet]: 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] [2024-12-02 06:02:05,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 06:02:05,418 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-12-02 06:02:05,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:02:05,418 INFO L85 PathProgramCache]: Analyzing trace with hash -432396634, now seen corresponding path program 1 times [2024-12-02 06:02:05,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:02:05,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060760609] [2024-12-02 06:02:05,419 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:02:05,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:02:05,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:02:05,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:02:05,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:02:05,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060760609] [2024-12-02 06:02:05,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060760609] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:02:05,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:02:05,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 06:02:05,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856038793] [2024-12-02 06:02:05,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:02:05,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:02:05,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:02:05,468 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:02:05,468 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:02:05,495 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 221 [2024-12-02 06:02:05,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 190 transitions, 388 flow. Second operand has 3 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 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) [2024-12-02 06:02:05,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 06:02:05,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 221 [2024-12-02 06:02:05,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 06:02:05,573 INFO L124 PetriNetUnfolderBase]: 17/444 cut-off events. [2024-12-02 06:02:05,573 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-12-02 06:02:05,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 488 conditions, 444 events. 17/444 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1732 event pairs, 8 based on Foata normal form. 0/402 useless extension candidates. Maximal degree in co-relation 461. Up to 31 conditions per place. [2024-12-02 06:02:05,577 INFO L140 encePairwiseOnDemand]: 217/221 looper letters, 9 selfloop transitions, 1 changer transitions 0/187 dead transitions. [2024-12-02 06:02:05,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 187 transitions, 402 flow [2024-12-02 06:02:05,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:02:05,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 06:02:05,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 601 transitions. [2024-12-02 06:02:05,580 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.9064856711915535 [2024-12-02 06:02:05,581 INFO L175 Difference]: Start difference. First operand has 195 places, 190 transitions, 388 flow. Second operand 3 states and 601 transitions. [2024-12-02 06:02:05,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 187 transitions, 402 flow [2024-12-02 06:02:05,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 187 transitions, 398 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 06:02:05,586 INFO L231 Difference]: Finished difference. Result has 190 places, 187 transitions, 380 flow [2024-12-02 06:02:05,587 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=380, PETRI_PLACES=190, PETRI_TRANSITIONS=187} [2024-12-02 06:02:05,588 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, -7 predicate places. [2024-12-02 06:02:05,588 INFO L471 AbstractCegarLoop]: Abstraction has has 190 places, 187 transitions, 380 flow [2024-12-02 06:02:05,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 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) [2024-12-02 06:02:05,588 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:02:05,589 INFO L206 CegarLoopForPetriNet]: 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] [2024-12-02 06:02:05,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 06:02:05,589 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-12-02 06:02:05,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:02:05,590 INFO L85 PathProgramCache]: Analyzing trace with hash -440540915, now seen corresponding path program 1 times [2024-12-02 06:02:05,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:02:05,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245094413] [2024-12-02 06:02:05,590 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:02:05,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:02:05,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:02:05,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:02:05,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:02:05,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245094413] [2024-12-02 06:02:05,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245094413] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:02:05,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:02:05,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 06:02:05,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955768571] [2024-12-02 06:02:05,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:02:05,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:02:05,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:02:05,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:02:05,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:02:05,740 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 221 [2024-12-02 06:02:05,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 187 transitions, 380 flow. Second operand has 3 states, 3 states have (on average 198.33333333333334) internal successors, (595), 3 states have internal predecessors, (595), 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) [2024-12-02 06:02:05,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 06:02:05,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 221 [2024-12-02 06:02:05,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 06:02:05,807 INFO L124 PetriNetUnfolderBase]: 10/292 cut-off events. [2024-12-02 06:02:05,807 INFO L125 PetriNetUnfolderBase]: For 4/5 co-relation queries the response was YES. [2024-12-02 06:02:05,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 292 events. 10/292 cut-off events. For 4/5 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 678 event pairs, 3 based on Foata normal form. 0/270 useless extension candidates. Maximal degree in co-relation 294. Up to 19 conditions per place. [2024-12-02 06:02:05,810 INFO L140 encePairwiseOnDemand]: 218/221 looper letters, 8 selfloop transitions, 2 changer transitions 0/186 dead transitions. [2024-12-02 06:02:05,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 186 transitions, 398 flow [2024-12-02 06:02:05,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:02:05,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 06:02:05,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 602 transitions. [2024-12-02 06:02:05,813 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.9079939668174962 [2024-12-02 06:02:05,813 INFO L175 Difference]: Start difference. First operand has 190 places, 187 transitions, 380 flow. Second operand 3 states and 602 transitions. [2024-12-02 06:02:05,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 186 transitions, 398 flow [2024-12-02 06:02:05,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 186 transitions, 397 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 06:02:05,817 INFO L231 Difference]: Finished difference. Result has 190 places, 186 transitions, 381 flow [2024-12-02 06:02:05,818 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=381, PETRI_PLACES=190, PETRI_TRANSITIONS=186} [2024-12-02 06:02:05,819 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, -7 predicate places. [2024-12-02 06:02:05,819 INFO L471 AbstractCegarLoop]: Abstraction has has 190 places, 186 transitions, 381 flow [2024-12-02 06:02:05,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 198.33333333333334) internal successors, (595), 3 states have internal predecessors, (595), 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) [2024-12-02 06:02:05,820 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:02:05,820 INFO L206 CegarLoopForPetriNet]: 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] [2024-12-02 06:02:05,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 06:02:05,820 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-12-02 06:02:05,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:02:05,821 INFO L85 PathProgramCache]: Analyzing trace with hash 2035691868, now seen corresponding path program 1 times [2024-12-02 06:02:05,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:02:05,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699928727] [2024-12-02 06:02:05,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:02:05,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:02:05,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:02:06,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:02:06,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:02:06,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699928727] [2024-12-02 06:02:06,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699928727] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:02:06,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:02:06,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 06:02:06,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521154431] [2024-12-02 06:02:06,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:02:06,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 06:02:06,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:02:06,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 06:02:06,419 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:02:06,643 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 221 [2024-12-02 06:02:06,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 186 transitions, 381 flow. Second operand has 6 states, 6 states have (on average 185.5) internal successors, (1113), 6 states have internal predecessors, (1113), 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) [2024-12-02 06:02:06,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 06:02:06,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 221 [2024-12-02 06:02:06,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 06:02:06,772 INFO L124 PetriNetUnfolderBase]: 42/566 cut-off events. [2024-12-02 06:02:06,772 INFO L125 PetriNetUnfolderBase]: For 10/11 co-relation queries the response was YES. [2024-12-02 06:02:06,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 669 conditions, 566 events. 42/566 cut-off events. For 10/11 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2496 event pairs, 24 based on Foata normal form. 0/510 useless extension candidates. Maximal degree in co-relation 643. Up to 82 conditions per place. [2024-12-02 06:02:06,776 INFO L140 encePairwiseOnDemand]: 215/221 looper letters, 19 selfloop transitions, 5 changer transitions 0/185 dead transitions. [2024-12-02 06:02:06,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 185 transitions, 427 flow [2024-12-02 06:02:06,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 06:02:06,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 06:02:06,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1129 transitions. [2024-12-02 06:02:06,780 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8514328808446455 [2024-12-02 06:02:06,780 INFO L175 Difference]: Start difference. First operand has 190 places, 186 transitions, 381 flow. Second operand 6 states and 1129 transitions. [2024-12-02 06:02:06,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 185 transitions, 427 flow [2024-12-02 06:02:06,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 185 transitions, 423 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 06:02:06,784 INFO L231 Difference]: Finished difference. Result has 192 places, 185 transitions, 385 flow [2024-12-02 06:02:06,784 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=385, PETRI_PLACES=192, PETRI_TRANSITIONS=185} [2024-12-02 06:02:06,785 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, -5 predicate places. [2024-12-02 06:02:06,785 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 185 transitions, 385 flow [2024-12-02 06:02:06,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 185.5) internal successors, (1113), 6 states have internal predecessors, (1113), 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) [2024-12-02 06:02:06,786 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:02:06,787 INFO L206 CegarLoopForPetriNet]: 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, 1, 1, 1, 1] [2024-12-02 06:02:06,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 06:02:06,787 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-12-02 06:02:06,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:02:06,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1272630164, now seen corresponding path program 1 times [2024-12-02 06:02:06,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:02:06,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094130713] [2024-12-02 06:02:06,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:02:06,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:02:06,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:02:06,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:02:06,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:02:06,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094130713] [2024-12-02 06:02:06,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094130713] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:02:06,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:02:06,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 06:02:06,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389745385] [2024-12-02 06:02:06,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:02:06,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:02:06,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:02:06,832 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:02:06,832 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:02:06,846 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 221 [2024-12-02 06:02:06,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 185 transitions, 385 flow. Second operand has 3 states, 3 states have (on average 200.33333333333334) internal successors, (601), 3 states have internal predecessors, (601), 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) [2024-12-02 06:02:06,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 06:02:06,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 221 [2024-12-02 06:02:06,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 06:02:06,934 INFO L124 PetriNetUnfolderBase]: 20/455 cut-off events. [2024-12-02 06:02:06,934 INFO L125 PetriNetUnfolderBase]: For 6/7 co-relation queries the response was YES. [2024-12-02 06:02:06,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 507 conditions, 455 events. 20/455 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1718 event pairs, 2 based on Foata normal form. 0/422 useless extension candidates. Maximal degree in co-relation 489. Up to 32 conditions per place. [2024-12-02 06:02:06,937 INFO L140 encePairwiseOnDemand]: 217/221 looper letters, 10 selfloop transitions, 2 changer transitions 0/187 dead transitions. [2024-12-02 06:02:06,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 187 transitions, 416 flow [2024-12-02 06:02:06,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:02:06,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 06:02:06,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 611 transitions. [2024-12-02 06:02:06,940 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.9215686274509803 [2024-12-02 06:02:06,940 INFO L175 Difference]: Start difference. First operand has 192 places, 185 transitions, 385 flow. Second operand 3 states and 611 transitions. [2024-12-02 06:02:06,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 187 transitions, 416 flow [2024-12-02 06:02:06,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 187 transitions, 406 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-12-02 06:02:06,944 INFO L231 Difference]: Finished difference. Result has 188 places, 185 transitions, 385 flow [2024-12-02 06:02:06,945 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=385, PETRI_PLACES=188, PETRI_TRANSITIONS=185} [2024-12-02 06:02:06,946 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, -9 predicate places. [2024-12-02 06:02:06,946 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 185 transitions, 385 flow [2024-12-02 06:02:06,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 200.33333333333334) internal successors, (601), 3 states have internal predecessors, (601), 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) [2024-12-02 06:02:06,946 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:02:06,946 INFO L206 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:02:06,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 06:02:06,947 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-12-02 06:02:06,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:02:06,947 INFO L85 PathProgramCache]: Analyzing trace with hash 387490576, now seen corresponding path program 1 times [2024-12-02 06:02:06,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:02:06,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58047537] [2024-12-02 06:02:06,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:02:06,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:02:06,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:02:07,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:02:07,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:02:07,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58047537] [2024-12-02 06:02:07,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58047537] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:02:07,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:02:07,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 06:02:07,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126782905] [2024-12-02 06:02:07,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:02:07,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 06:02:07,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:02:07,127 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 06:02:07,127 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:02:07,327 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 221 [2024-12-02 06:02:07,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 185 transitions, 385 flow. Second operand has 7 states, 7 states have (on average 192.85714285714286) internal successors, (1350), 7 states have internal predecessors, (1350), 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) [2024-12-02 06:02:07,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 06:02:07,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 221 [2024-12-02 06:02:07,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 06:02:07,510 INFO L124 PetriNetUnfolderBase]: 17/486 cut-off events. [2024-12-02 06:02:07,510 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-12-02 06:02:07,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 582 conditions, 486 events. 17/486 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1752 event pairs, 6 based on Foata normal form. 2/462 useless extension candidates. Maximal degree in co-relation 554. Up to 29 conditions per place. [2024-12-02 06:02:07,513 INFO L140 encePairwiseOnDemand]: 208/221 looper letters, 15 selfloop transitions, 14 changer transitions 0/196 dead transitions. [2024-12-02 06:02:07,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 196 transitions, 471 flow [2024-12-02 06:02:07,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 06:02:07,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-12-02 06:02:07,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1940 transitions. [2024-12-02 06:02:07,519 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8778280542986425 [2024-12-02 06:02:07,519 INFO L175 Difference]: Start difference. First operand has 188 places, 185 transitions, 385 flow. Second operand 10 states and 1940 transitions. [2024-12-02 06:02:07,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 196 transitions, 471 flow [2024-12-02 06:02:07,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 196 transitions, 471 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 06:02:07,524 INFO L231 Difference]: Finished difference. Result has 201 places, 192 transitions, 451 flow [2024-12-02 06:02:07,524 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=451, PETRI_PLACES=201, PETRI_TRANSITIONS=192} [2024-12-02 06:02:07,525 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, 4 predicate places. [2024-12-02 06:02:07,525 INFO L471 AbstractCegarLoop]: Abstraction has has 201 places, 192 transitions, 451 flow [2024-12-02 06:02:07,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 192.85714285714286) internal successors, (1350), 7 states have internal predecessors, (1350), 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) [2024-12-02 06:02:07,526 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:02:07,526 INFO L206 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:02:07,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 06:02:07,527 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-12-02 06:02:07,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:02:07,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1431869187, now seen corresponding path program 1 times [2024-12-02 06:02:07,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:02:07,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559159366] [2024-12-02 06:02:07,528 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:02:07,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:02:07,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:02:07,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:02:07,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:02:07,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559159366] [2024-12-02 06:02:07,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559159366] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:02:07,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:02:07,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 06:02:07,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376715202] [2024-12-02 06:02:07,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:02:07,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 06:02:07,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:02:07,700 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 06:02:07,700 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:02:07,890 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 221 [2024-12-02 06:02:07,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 192 transitions, 451 flow. Second operand has 7 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 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) [2024-12-02 06:02:07,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 06:02:07,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 221 [2024-12-02 06:02:07,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 06:02:08,056 INFO L124 PetriNetUnfolderBase]: 22/385 cut-off events. [2024-12-02 06:02:08,056 INFO L125 PetriNetUnfolderBase]: For 32/35 co-relation queries the response was YES. [2024-12-02 06:02:08,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 498 conditions, 385 events. 22/385 cut-off events. For 32/35 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1171 event pairs, 8 based on Foata normal form. 2/370 useless extension candidates. Maximal degree in co-relation 462. Up to 35 conditions per place. [2024-12-02 06:02:08,059 INFO L140 encePairwiseOnDemand]: 208/221 looper letters, 11 selfloop transitions, 8 changer transitions 12/198 dead transitions. [2024-12-02 06:02:08,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 198 transitions, 526 flow [2024-12-02 06:02:08,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 06:02:08,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-12-02 06:02:08,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1940 transitions. [2024-12-02 06:02:08,065 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8778280542986425 [2024-12-02 06:02:08,065 INFO L175 Difference]: Start difference. First operand has 201 places, 192 transitions, 451 flow. Second operand 10 states and 1940 transitions. [2024-12-02 06:02:08,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 198 transitions, 526 flow [2024-12-02 06:02:08,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 198 transitions, 522 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 06:02:08,070 INFO L231 Difference]: Finished difference. Result has 211 places, 186 transitions, 439 flow [2024-12-02 06:02:08,070 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=439, PETRI_PLACES=211, PETRI_TRANSITIONS=186} [2024-12-02 06:02:08,071 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, 14 predicate places. [2024-12-02 06:02:08,071 INFO L471 AbstractCegarLoop]: Abstraction has has 211 places, 186 transitions, 439 flow [2024-12-02 06:02:08,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 193.0) internal successors, (1351), 7 states have internal predecessors, (1351), 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) [2024-12-02 06:02:08,073 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:02:08,073 INFO L206 CegarLoopForPetriNet]: 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, 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] [2024-12-02 06:02:08,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 06:02:08,073 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-12-02 06:02:08,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:02:08,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1121806134, now seen corresponding path program 1 times [2024-12-02 06:02:08,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:02:08,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732230320] [2024-12-02 06:02:08,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:02:08,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:02:08,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:02:08,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 06:02:08,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:02:08,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732230320] [2024-12-02 06:02:08,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732230320] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:02:08,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:02:08,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 06:02:08,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280989841] [2024-12-02 06:02:08,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:02:08,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 06:02:08,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:02:08,603 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 06:02:08,604 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:02:08,790 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 221 [2024-12-02 06:02:08,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 186 transitions, 439 flow. Second operand has 6 states, 6 states have (on average 193.16666666666666) internal successors, (1159), 6 states have internal predecessors, (1159), 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) [2024-12-02 06:02:08,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 06:02:08,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 221 [2024-12-02 06:02:08,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 06:02:08,909 INFO L124 PetriNetUnfolderBase]: 16/329 cut-off events. [2024-12-02 06:02:08,909 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-12-02 06:02:08,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 452 conditions, 329 events. 16/329 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 843 event pairs, 4 based on Foata normal form. 0/317 useless extension candidates. Maximal degree in co-relation 413. Up to 27 conditions per place. [2024-12-02 06:02:08,912 INFO L140 encePairwiseOnDemand]: 215/221 looper letters, 16 selfloop transitions, 5 changer transitions 0/189 dead transitions. [2024-12-02 06:02:08,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 189 transitions, 495 flow [2024-12-02 06:02:08,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 06:02:08,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 06:02:08,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1168 transitions. [2024-12-02 06:02:08,917 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8808446455505279 [2024-12-02 06:02:08,917 INFO L175 Difference]: Start difference. First operand has 211 places, 186 transitions, 439 flow. Second operand 6 states and 1168 transitions. [2024-12-02 06:02:08,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 189 transitions, 495 flow [2024-12-02 06:02:08,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 189 transitions, 451 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-12-02 06:02:08,924 INFO L231 Difference]: Finished difference. Result has 194 places, 185 transitions, 403 flow [2024-12-02 06:02:08,924 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=403, PETRI_PLACES=194, PETRI_TRANSITIONS=185} [2024-12-02 06:02:08,925 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, -3 predicate places. [2024-12-02 06:02:08,925 INFO L471 AbstractCegarLoop]: Abstraction has has 194 places, 185 transitions, 403 flow [2024-12-02 06:02:08,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 193.16666666666666) internal successors, (1159), 6 states have internal predecessors, (1159), 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) [2024-12-02 06:02:08,926 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 06:02:08,927 INFO L206 CegarLoopForPetriNet]: 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, 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] [2024-12-02 06:02:08,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 06:02:08,927 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-12-02 06:02:08,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:02:08,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1113119063, now seen corresponding path program 1 times [2024-12-02 06:02:08,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:02:08,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537847986] [2024-12-02 06:02:08,928 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:02:08,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:02:08,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:02:09,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 06:02:09,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:02:09,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537847986] [2024-12-02 06:02:09,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537847986] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:02:09,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:02:09,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 06:02:09,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064456702] [2024-12-02 06:02:09,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:02:09,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 06:02:09,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:02:09,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 06:02:09,445 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:02:09,635 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 221 [2024-12-02 06:02:09,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 185 transitions, 403 flow. Second operand has 6 states, 6 states have (on average 193.33333333333334) internal successors, (1160), 6 states have internal predecessors, (1160), 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) [2024-12-02 06:02:09,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 06:02:09,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 221 [2024-12-02 06:02:09,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 06:02:09,723 INFO L124 PetriNetUnfolderBase]: 26/337 cut-off events. [2024-12-02 06:02:09,723 INFO L125 PetriNetUnfolderBase]: For 20/22 co-relation queries the response was YES. [2024-12-02 06:02:09,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 426 conditions, 337 events. 26/337 cut-off events. For 20/22 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 912 event pairs, 5 based on Foata normal form. 0/317 useless extension candidates. Maximal degree in co-relation 397. Up to 34 conditions per place. [2024-12-02 06:02:09,725 INFO L140 encePairwiseOnDemand]: 215/221 looper letters, 0 selfloop transitions, 0 changer transitions 188/188 dead transitions. [2024-12-02 06:02:09,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 188 transitions, 455 flow [2024-12-02 06:02:09,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 06:02:09,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 06:02:09,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1168 transitions. [2024-12-02 06:02:09,729 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8808446455505279 [2024-12-02 06:02:09,729 INFO L175 Difference]: Start difference. First operand has 194 places, 185 transitions, 403 flow. Second operand 6 states and 1168 transitions. [2024-12-02 06:02:09,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 188 transitions, 455 flow [2024-12-02 06:02:09,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 188 transitions, 445 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-12-02 06:02:09,732 INFO L231 Difference]: Finished difference. Result has 193 places, 0 transitions, 0 flow [2024-12-02 06:02:09,732 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=193, PETRI_TRANSITIONS=0} [2024-12-02 06:02:09,733 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, -4 predicate places. [2024-12-02 06:02:09,733 INFO L471 AbstractCegarLoop]: Abstraction has has 193 places, 0 transitions, 0 flow [2024-12-02 06:02:09,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 193.33333333333334) internal successors, (1160), 6 states have internal predecessors, (1160), 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) [2024-12-02 06:02:09,737 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONDATA_RACE (17 of 18 remaining) [2024-12-02 06:02:09,738 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONDATA_RACE (16 of 18 remaining) [2024-12-02 06:02:09,738 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONDATA_RACE (15 of 18 remaining) [2024-12-02 06:02:09,738 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONDATA_RACE (14 of 18 remaining) [2024-12-02 06:02:09,738 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONDATA_RACE (13 of 18 remaining) [2024-12-02 06:02:09,738 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONDATA_RACE (12 of 18 remaining) [2024-12-02 06:02:09,738 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (11 of 18 remaining) [2024-12-02 06:02:09,738 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (10 of 18 remaining) [2024-12-02 06:02:09,739 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (9 of 18 remaining) [2024-12-02 06:02:09,739 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (8 of 18 remaining) [2024-12-02 06:02:09,739 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 18 remaining) [2024-12-02 06:02:09,739 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 18 remaining) [2024-12-02 06:02:09,739 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONDATA_RACE (5 of 18 remaining) [2024-12-02 06:02:09,739 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONDATA_RACE (4 of 18 remaining) [2024-12-02 06:02:09,739 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONDATA_RACE (3 of 18 remaining) [2024-12-02 06:02:09,739 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONDATA_RACE (2 of 18 remaining) [2024-12-02 06:02:09,739 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONDATA_RACE (1 of 18 remaining) [2024-12-02 06:02:09,739 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONDATA_RACE (0 of 18 remaining) [2024-12-02 06:02:09,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 06:02:09,740 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:02:09,747 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-12-02 06:02:09,747 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-12-02 06:02:09,754 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 06:02:09 BasicIcfg [2024-12-02 06:02:09,754 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-12-02 06:02:09,755 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-02 06:02:09,755 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-02 06:02:09,755 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-02 06:02:09,755 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:02:04" (3/4) ... [2024-12-02 06:02:09,757 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-12-02 06:02:09,761 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-12-02 06:02:09,762 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-12-02 06:02:09,766 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2024-12-02 06:02:09,767 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-12-02 06:02:09,767 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-12-02 06:02:09,767 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-12-02 06:02:09,859 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b2be58-155f-4b2c-b287-126f668934a9/bin/uautomizer-verify-84ZbGMXZE1/witness.graphml [2024-12-02 06:02:09,859 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b2be58-155f-4b2c-b287-126f668934a9/bin/uautomizer-verify-84ZbGMXZE1/witness.yml [2024-12-02 06:02:09,859 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-02 06:02:09,860 INFO L158 Benchmark]: Toolchain (without parser) took 6114.36ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 92.9MB in the beginning and 67.3MB in the end (delta: 25.6MB). Peak memory consumption was 50.4MB. Max. memory is 16.1GB. [2024-12-02 06:02:09,861 INFO L158 Benchmark]: CDTParser took 0.42ms. Allocated memory is still 117.4MB. Free memory is still 73.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 06:02:09,861 INFO L158 Benchmark]: CACSL2BoogieTranslator took 256.87ms. Allocated memory is still 117.4MB. Free memory was 92.6MB in the beginning and 80.7MB in the end (delta: 12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 06:02:09,861 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.49ms. Allocated memory is still 117.4MB. Free memory was 80.7MB in the beginning and 78.7MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 06:02:09,861 INFO L158 Benchmark]: Boogie Preprocessor took 33.04ms. Allocated memory is still 117.4MB. Free memory was 78.7MB in the beginning and 77.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 06:02:09,862 INFO L158 Benchmark]: RCFGBuilder took 577.65ms. Allocated memory is still 117.4MB. Free memory was 77.1MB in the beginning and 57.8MB in the end (delta: 19.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 06:02:09,862 INFO L158 Benchmark]: TraceAbstraction took 5088.84ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 57.3MB in the beginning and 71.8MB in the end (delta: -14.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 06:02:09,862 INFO L158 Benchmark]: Witness Printer took 104.83ms. Allocated memory is still 142.6MB. Free memory was 71.8MB in the beginning and 67.3MB in the end (delta: 4.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 06:02:09,864 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42ms. Allocated memory is still 117.4MB. Free memory is still 73.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 256.87ms. Allocated memory is still 117.4MB. Free memory was 92.6MB in the beginning and 80.7MB in the end (delta: 12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.49ms. Allocated memory is still 117.4MB. Free memory was 80.7MB in the beginning and 78.7MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.04ms. Allocated memory is still 117.4MB. Free memory was 78.7MB in the beginning and 77.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 577.65ms. Allocated memory is still 117.4MB. Free memory was 77.1MB in the beginning and 57.8MB in the end (delta: 19.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 5088.84ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 57.3MB in the beginning and 71.8MB in the end (delta: -14.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Witness Printer took 104.83ms. Allocated memory is still 142.6MB. Free memory was 71.8MB in the beginning and 67.3MB in the end (delta: 4.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 48]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 49]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 49]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 57]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 58]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 58]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 68]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 69]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 69]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 89]: there are no data races For all program executions holds that there are no data races at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 315 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.9s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 659 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 430 mSDsluCounter, 420 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 387 mSDsCounter, 62 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1048 IncrementalHoareTripleChecker+Invalid, 1110 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 62 mSolverCounterUnsat, 33 mSDtfsCounter, 1048 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=451occurred in iteration=6, InterpolantAutomatonStates: 50, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 544 NumberOfCodeBlocks, 544 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 535 ConstructedInterpolants, 0 QuantifiedInterpolants, 1092 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-12-02 06:02:09,884 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06b2be58-155f-4b2c-b287-126f668934a9/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE