./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i --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_bb383709-8a6d-4321-9118-d62a766842e1/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb383709-8a6d-4321-9118-d62a766842e1/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb383709-8a6d-4321-9118-d62a766842e1/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb383709-8a6d-4321-9118-d62a766842e1/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb383709-8a6d-4321-9118-d62a766842e1/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb383709-8a6d-4321-9118-d62a766842e1/bin/uautomizer-verify-aQ6SnzHsRB --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 22ba795826618dfa50b90a88d5a4c30adee7dfead438325f939eb97a379da897 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:24:03,280 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:24:03,395 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb383709-8a6d-4321-9118-d62a766842e1/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-27 23:24:03,406 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:24:03,406 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:24:03,440 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:24:03,441 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:24:03,441 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:24:03,442 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:24:03,442 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:24:03,442 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:24:03,442 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:24:03,442 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:24:03,443 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:24:03,443 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 23:24:03,443 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:24:03,443 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:24:03,443 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:24:03,443 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:24:03,443 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 23:24:03,444 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:24:03,444 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 23:24:03,444 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-27 23:24:03,444 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 23:24:03,444 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:24:03,444 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 23:24:03,445 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:24:03,445 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:24:03,445 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:24:03,445 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:24:03,445 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:24:03,445 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:24:03,445 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:24:03,446 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:24:03,446 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:24:03,446 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:24:03,446 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:24:03,446 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:24:03,446 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 23:24:03,447 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 23:24:03,447 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:24:03,447 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:24:03,447 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:24:03,447 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:24:03,447 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:24:03,447 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:24:03,447 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_bb383709-8a6d-4321-9118-d62a766842e1/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 22ba795826618dfa50b90a88d5a4c30adee7dfead438325f939eb97a379da897 [2024-11-27 23:24:03,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:24:03,841 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:24:03,847 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:24:03,849 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:24:03,849 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:24:03,851 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb383709-8a6d-4321-9118-d62a766842e1/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i [2024-11-27 23:24:07,536 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb383709-8a6d-4321-9118-d62a766842e1/bin/uautomizer-verify-aQ6SnzHsRB/data/8217cdc36/a89a51e08aa741c8bba85a12cdac6390/FLAG25bef3dc5 [2024-11-27 23:24:08,011 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:24:08,011 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb383709-8a6d-4321-9118-d62a766842e1/sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i [2024-11-27 23:24:08,029 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb383709-8a6d-4321-9118-d62a766842e1/bin/uautomizer-verify-aQ6SnzHsRB/data/8217cdc36/a89a51e08aa741c8bba85a12cdac6390/FLAG25bef3dc5 [2024-11-27 23:24:08,057 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb383709-8a6d-4321-9118-d62a766842e1/bin/uautomizer-verify-aQ6SnzHsRB/data/8217cdc36/a89a51e08aa741c8bba85a12cdac6390 [2024-11-27 23:24:08,060 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:24:08,062 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:24:08,063 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:24:08,063 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:24:08,069 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:24:08,070 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:24:08" (1/1) ... [2024-11-27 23:24:08,071 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30676020 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:08, skipping insertion in model container [2024-11-27 23:24:08,072 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:24:08" (1/1) ... [2024-11-27 23:24:08,113 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:24:08,701 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:24:08,726 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:24:08,816 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:24:08,874 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:24:08,875 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:08 WrapperNode [2024-11-27 23:24:08,876 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:24:08,878 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:24:08,878 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:24:08,878 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:24:08,887 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:08" (1/1) ... [2024-11-27 23:24:08,900 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:08" (1/1) ... [2024-11-27 23:24:08,933 INFO L138 Inliner]: procedures = 164, calls = 22, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 110 [2024-11-27 23:24:08,933 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:24:08,934 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:24:08,934 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:24:08,934 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:24:08,942 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:08" (1/1) ... [2024-11-27 23:24:08,942 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:08" (1/1) ... [2024-11-27 23:24:08,945 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:08" (1/1) ... [2024-11-27 23:24:08,946 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:08" (1/1) ... [2024-11-27 23:24:08,953 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:08" (1/1) ... [2024-11-27 23:24:08,955 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:08" (1/1) ... [2024-11-27 23:24:08,959 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:08" (1/1) ... [2024-11-27 23:24:08,960 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:08" (1/1) ... [2024-11-27 23:24:08,961 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:08" (1/1) ... [2024-11-27 23:24:08,964 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:24:08,965 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:24:08,965 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:24:08,965 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:24:08,966 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:08" (1/1) ... [2024-11-27 23:24:08,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:24:08,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb383709-8a6d-4321-9118-d62a766842e1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:24:09,011 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb383709-8a6d-4321-9118-d62a766842e1/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:24:09,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb383709-8a6d-4321-9118-d62a766842e1/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:24:09,038 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2024-11-27 23:24:09,038 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2024-11-27 23:24:09,038 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-27 23:24:09,039 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-27 23:24:09,039 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-27 23:24:09,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:24:09,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-27 23:24:09,039 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-27 23:24:09,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:24:09,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:24:09,041 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-27 23:24:09,195 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:24:09,197 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:24:09,494 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-27 23:24:09,494 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:24:09,534 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:24:09,534 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-27 23:24:09,535 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:24:09 BoogieIcfgContainer [2024-11-27 23:24:09,535 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:24:09,538 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:24:09,538 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:24:09,545 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:24:09,545 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:24:08" (1/3) ... [2024-11-27 23:24:09,546 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2714f261 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:24:09, skipping insertion in model container [2024-11-27 23:24:09,547 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:24:08" (2/3) ... [2024-11-27 23:24:09,547 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2714f261 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:24:09, skipping insertion in model container [2024-11-27 23:24:09,547 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:24:09" (3/3) ... [2024-11-27 23:24:09,549 INFO L128 eAbstractionObserver]: Analyzing ICFG 35_double_lock_p3_vs.i [2024-11-27 23:24:09,577 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:24:09,579 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 35_double_lock_p3_vs.i that has 3 procedures, 113 locations, 1 initial locations, 2 loop locations, and 9 error locations. [2024-11-27 23:24:09,581 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-27 23:24:09,689 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-27 23:24:09,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 119 transitions, 246 flow [2024-11-27 23:24:09,868 INFO L124 PetriNetUnfolderBase]: 7/126 cut-off events. [2024-11-27 23:24:09,871 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-27 23:24:09,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 126 events. 7/126 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 153 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 107. Up to 4 conditions per place. [2024-11-27 23:24:09,881 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 119 transitions, 246 flow [2024-11-27 23:24:09,887 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 118 transitions, 243 flow [2024-11-27 23:24:09,903 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:24:09,956 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;@57bf807b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:24:09,956 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-11-27 23:24:09,986 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-27 23:24:09,986 INFO L124 PetriNetUnfolderBase]: 2/36 cut-off events. [2024-11-27 23:24:09,986 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-27 23:24:09,987 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:24:09,987 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] [2024-11-27 23:24:09,988 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2024-11-27 23:24:09,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:10,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1498998215, now seen corresponding path program 1 times [2024-11-27 23:24:10,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:10,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876037855] [2024-11-27 23:24:10,013 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:10,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:10,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:10,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:10,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:10,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876037855] [2024-11-27 23:24:10,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876037855] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:24:10,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:24:10,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:24:10,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255491438] [2024-11-27 23:24:10,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:24:10,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:24:10,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:10,414 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:24:10,415 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:24:10,514 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 119 [2024-11-27 23:24:10,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 118 transitions, 243 flow. Second operand has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 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) [2024-11-27 23:24:10,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:24:10,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 119 [2024-11-27 23:24:10,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:24:10,815 INFO L124 PetriNetUnfolderBase]: 120/543 cut-off events. [2024-11-27 23:24:10,815 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-27 23:24:10,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 814 conditions, 543 events. 120/543 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2358 event pairs, 37 based on Foata normal form. 179/669 useless extension candidates. Maximal degree in co-relation 786. Up to 176 conditions per place. [2024-11-27 23:24:10,824 INFO L140 encePairwiseOnDemand]: 98/119 looper letters, 26 selfloop transitions, 10 changer transitions 0/114 dead transitions. [2024-11-27 23:24:10,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 114 transitions, 310 flow [2024-11-27 23:24:10,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:24:10,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 23:24:10,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 308 transitions. [2024-11-27 23:24:10,849 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8627450980392157 [2024-11-27 23:24:10,852 INFO L175 Difference]: Start difference. First operand has 118 places, 118 transitions, 243 flow. Second operand 3 states and 308 transitions. [2024-11-27 23:24:10,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 114 transitions, 310 flow [2024-11-27 23:24:10,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 114 transitions, 309 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 23:24:10,872 INFO L231 Difference]: Finished difference. Result has 108 places, 107 transitions, 274 flow [2024-11-27 23:24:10,875 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=274, PETRI_PLACES=108, PETRI_TRANSITIONS=107} [2024-11-27 23:24:10,884 INFO L279 CegarLoopForPetriNet]: 118 programPoint places, -10 predicate places. [2024-11-27 23:24:10,884 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 107 transitions, 274 flow [2024-11-27 23:24:10,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 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) [2024-11-27 23:24:10,887 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:24:10,887 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:24:10,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 23:24:10,888 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2024-11-27 23:24:10,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:10,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1930045383, now seen corresponding path program 1 times [2024-11-27 23:24:10,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:10,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292942320] [2024-11-27 23:24:10,890 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:10,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:10,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:24:10,948 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 23:24:10,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:24:10,999 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-27 23:24:11,000 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-27 23:24:11,002 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 20 remaining) [2024-11-27 23:24:11,005 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (18 of 20 remaining) [2024-11-27 23:24:11,009 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (17 of 20 remaining) [2024-11-27 23:24:11,010 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (16 of 20 remaining) [2024-11-27 23:24:11,010 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (15 of 20 remaining) [2024-11-27 23:24:11,010 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (14 of 20 remaining) [2024-11-27 23:24:11,010 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (13 of 20 remaining) [2024-11-27 23:24:11,010 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (12 of 20 remaining) [2024-11-27 23:24:11,011 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (11 of 20 remaining) [2024-11-27 23:24:11,011 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 20 remaining) [2024-11-27 23:24:11,011 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 20 remaining) [2024-11-27 23:24:11,011 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (8 of 20 remaining) [2024-11-27 23:24:11,011 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (7 of 20 remaining) [2024-11-27 23:24:11,011 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (6 of 20 remaining) [2024-11-27 23:24:11,012 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (5 of 20 remaining) [2024-11-27 23:24:11,012 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (4 of 20 remaining) [2024-11-27 23:24:11,014 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (3 of 20 remaining) [2024-11-27 23:24:11,015 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (2 of 20 remaining) [2024-11-27 23:24:11,015 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (1 of 20 remaining) [2024-11-27 23:24:11,015 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 20 remaining) [2024-11-27 23:24:11,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 23:24:11,016 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-27 23:24:11,019 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-27 23:24:11,020 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-27 23:24:11,116 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-27 23:24:11,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 204 transitions, 428 flow [2024-11-27 23:24:11,208 INFO L124 PetriNetUnfolderBase]: 9/200 cut-off events. [2024-11-27 23:24:11,208 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-27 23:24:11,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 200 events. 9/200 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 359 event pairs, 0 based on Foata normal form. 0/171 useless extension candidates. Maximal degree in co-relation 207. Up to 6 conditions per place. [2024-11-27 23:24:11,216 INFO L82 GeneralOperation]: Start removeDead. Operand has 203 places, 204 transitions, 428 flow [2024-11-27 23:24:11,222 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 183 places, 182 transitions, 377 flow [2024-11-27 23:24:11,225 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:24:11,226 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;@57bf807b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:24:11,226 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-11-27 23:24:11,235 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-27 23:24:11,235 INFO L124 PetriNetUnfolderBase]: 2/38 cut-off events. [2024-11-27 23:24:11,236 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-27 23:24:11,236 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:24:11,236 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] [2024-11-27 23:24:11,236 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2024-11-27 23:24:11,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:11,238 INFO L85 PathProgramCache]: Analyzing trace with hash -225994140, now seen corresponding path program 1 times [2024-11-27 23:24:11,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:11,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593280509] [2024-11-27 23:24:11,238 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:11,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:11,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:11,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:11,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:11,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593280509] [2024-11-27 23:24:11,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593280509] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:24:11,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:24:11,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:24:11,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614158049] [2024-11-27 23:24:11,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:24:11,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:24:11,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:11,317 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:24:11,317 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:24:11,488 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 204 [2024-11-27 23:24:11,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 182 transitions, 377 flow. Second operand has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 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) [2024-11-27 23:24:11,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:24:11,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 204 [2024-11-27 23:24:11,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:24:15,360 INFO L124 PetriNetUnfolderBase]: 6178/16775 cut-off events. [2024-11-27 23:24:15,361 INFO L125 PetriNetUnfolderBase]: For 437/437 co-relation queries the response was YES. [2024-11-27 23:24:15,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27001 conditions, 16775 events. 6178/16775 cut-off events. For 437/437 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 164180 event pairs, 1936 based on Foata normal form. 4992/19927 useless extension candidates. Maximal degree in co-relation 26972. Up to 6244 conditions per place. [2024-11-27 23:24:15,557 INFO L140 encePairwiseOnDemand]: 163/204 looper letters, 60 selfloop transitions, 26 changer transitions 0/207 dead transitions. [2024-11-27 23:24:15,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 207 transitions, 607 flow [2024-11-27 23:24:15,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:24:15,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 23:24:15,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 521 transitions. [2024-11-27 23:24:15,565 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8513071895424836 [2024-11-27 23:24:15,566 INFO L175 Difference]: Start difference. First operand has 183 places, 182 transitions, 377 flow. Second operand 3 states and 521 transitions. [2024-11-27 23:24:15,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 207 transitions, 607 flow [2024-11-27 23:24:15,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 207 transitions, 606 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 23:24:15,575 INFO L231 Difference]: Finished difference. Result has 177 places, 195 transitions, 576 flow [2024-11-27 23:24:15,576 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=576, PETRI_PLACES=177, PETRI_TRANSITIONS=195} [2024-11-27 23:24:15,577 INFO L279 CegarLoopForPetriNet]: 183 programPoint places, -6 predicate places. [2024-11-27 23:24:15,577 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 195 transitions, 576 flow [2024-11-27 23:24:15,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 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) [2024-11-27 23:24:15,577 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:24:15,578 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:24:15,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 23:24:15,579 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2024-11-27 23:24:15,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:15,579 INFO L85 PathProgramCache]: Analyzing trace with hash -690130370, now seen corresponding path program 1 times [2024-11-27 23:24:15,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:15,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874997650] [2024-11-27 23:24:15,580 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:15,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:15,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:24:15,616 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 23:24:15,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:24:15,642 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-27 23:24:15,643 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-27 23:24:15,643 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2024-11-27 23:24:15,643 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (27 of 29 remaining) [2024-11-27 23:24:15,643 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (26 of 29 remaining) [2024-11-27 23:24:15,643 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (25 of 29 remaining) [2024-11-27 23:24:15,644 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (24 of 29 remaining) [2024-11-27 23:24:15,644 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (23 of 29 remaining) [2024-11-27 23:24:15,644 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (22 of 29 remaining) [2024-11-27 23:24:15,644 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (21 of 29 remaining) [2024-11-27 23:24:15,644 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (20 of 29 remaining) [2024-11-27 23:24:15,644 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 29 remaining) [2024-11-27 23:24:15,644 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 29 remaining) [2024-11-27 23:24:15,645 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (17 of 29 remaining) [2024-11-27 23:24:15,645 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (16 of 29 remaining) [2024-11-27 23:24:15,645 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (15 of 29 remaining) [2024-11-27 23:24:15,645 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (14 of 29 remaining) [2024-11-27 23:24:15,645 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (13 of 29 remaining) [2024-11-27 23:24:15,645 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (12 of 29 remaining) [2024-11-27 23:24:15,646 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (11 of 29 remaining) [2024-11-27 23:24:15,646 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (10 of 29 remaining) [2024-11-27 23:24:15,646 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (9 of 29 remaining) [2024-11-27 23:24:15,646 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (8 of 29 remaining) [2024-11-27 23:24:15,646 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (7 of 29 remaining) [2024-11-27 23:24:15,646 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (6 of 29 remaining) [2024-11-27 23:24:15,646 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (5 of 29 remaining) [2024-11-27 23:24:15,647 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (4 of 29 remaining) [2024-11-27 23:24:15,647 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (3 of 29 remaining) [2024-11-27 23:24:15,647 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (2 of 29 remaining) [2024-11-27 23:24:15,647 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 29 remaining) [2024-11-27 23:24:15,647 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 29 remaining) [2024-11-27 23:24:15,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 23:24:15,647 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-27 23:24:15,648 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-27 23:24:15,648 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-27 23:24:15,736 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-27 23:24:15,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 287 places, 289 transitions, 614 flow [2024-11-27 23:24:15,809 INFO L124 PetriNetUnfolderBase]: 11/274 cut-off events. [2024-11-27 23:24:15,809 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-27 23:24:15,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292 conditions, 274 events. 11/274 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 688 event pairs, 0 based on Foata normal form. 0/234 useless extension candidates. Maximal degree in co-relation 285. Up to 8 conditions per place. [2024-11-27 23:24:15,812 INFO L82 GeneralOperation]: Start removeDead. Operand has 287 places, 289 transitions, 614 flow [2024-11-27 23:24:15,820 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 248 places, 246 transitions, 513 flow [2024-11-27 23:24:15,821 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:24:15,822 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;@57bf807b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:24:15,822 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2024-11-27 23:24:15,829 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-27 23:24:15,829 INFO L124 PetriNetUnfolderBase]: 2/38 cut-off events. [2024-11-27 23:24:15,829 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-27 23:24:15,829 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:24:15,830 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] [2024-11-27 23:24:15,830 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2024-11-27 23:24:15,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:15,831 INFO L85 PathProgramCache]: Analyzing trace with hash 211529667, now seen corresponding path program 1 times [2024-11-27 23:24:15,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:15,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113874024] [2024-11-27 23:24:15,832 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:24:15,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:15,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:15,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:15,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:15,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113874024] [2024-11-27 23:24:15,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113874024] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:24:15,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:24:15,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:24:15,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982727850] [2024-11-27 23:24:15,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:24:15,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:24:15,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:15,923 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:24:15,923 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:24:16,104 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 289 [2024-11-27 23:24:16,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 246 transitions, 513 flow. Second operand has 3 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 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) [2024-11-27 23:24:16,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:24:16,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 289 [2024-11-27 23:24:16,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand