./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0e1836-e339-4645-a337-0af2ab86935d/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0e1836-e339-4645-a337-0af2ab86935d/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0e1836-e339-4645-a337-0af2ab86935d/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0e1836-e339-4645-a337-0af2ab86935d/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0e1836-e339-4645-a337-0af2ab86935d/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0e1836-e339-4645-a337-0af2ab86935d/bin/uautomizer-verify-qhAvR1uOyd --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 0a77b23de3110741cf9e339cfb9f72e965f6bc6bc082cff0044fedc6c4916cfb --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 12:44:58,428 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 12:44:58,530 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0e1836-e339-4645-a337-0af2ab86935d/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-13 12:44:58,540 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 12:44:58,541 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 12:44:58,574 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 12:44:58,576 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 12:44:58,576 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 12:44:58,577 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 12:44:58,578 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 12:44:58,578 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 12:44:58,579 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 12:44:58,580 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 12:44:58,580 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 12:44:58,580 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 12:44:58,580 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 12:44:58,580 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 12:44:58,580 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 12:44:58,581 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 12:44:58,582 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 12:44:58,582 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 12:44:58,582 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 12:44:58,582 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-13 12:44:58,582 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 12:44:58,582 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 12:44:58,582 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 12:44:58,583 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 12:44:58,583 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 12:44:58,583 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 12:44:58,583 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 12:44:58,583 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 12:44:58,583 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 12:44:58,584 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 12:44:58,584 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 12:44:58,584 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 12:44:58,584 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 12:44:58,584 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 12:44:58,584 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 12:44:58,584 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 12:44:58,584 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 12:44:58,584 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 12:44:58,584 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_2f0e1836-e339-4645-a337-0af2ab86935d/bin/uautomizer-verify-qhAvR1uOyd 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 -> 0a77b23de3110741cf9e339cfb9f72e965f6bc6bc082cff0044fedc6c4916cfb [2024-11-13 12:44:58,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 12:44:58,939 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 12:44:58,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 12:44:58,944 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 12:44:58,944 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 12:44:58,946 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0e1836-e339-4645-a337-0af2ab86935d/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i Unable to find full path for "g++" [2024-11-13 12:45:00,963 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 12:45:01,481 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 12:45:01,485 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0e1836-e339-4645-a337-0af2ab86935d/sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i [2024-11-13 12:45:01,520 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0e1836-e339-4645-a337-0af2ab86935d/bin/uautomizer-verify-qhAvR1uOyd/data/3d0b5b232/20c7b0471aed4f26b5f1211060354006/FLAG334c5b9b0 [2024-11-13 12:45:01,541 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0e1836-e339-4645-a337-0af2ab86935d/bin/uautomizer-verify-qhAvR1uOyd/data/3d0b5b232/20c7b0471aed4f26b5f1211060354006 [2024-11-13 12:45:01,547 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 12:45:01,548 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 12:45:01,550 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 12:45:01,550 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 12:45:01,556 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 12:45:01,557 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 12:45:01" (1/1) ... [2024-11-13 12:45:01,558 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42bcac76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:45:01, skipping insertion in model container [2024-11-13 12:45:01,560 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 12:45:01" (1/1) ... [2024-11-13 12:45:01,627 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 12:45:02,815 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 12:45:02,838 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 12:45:02,991 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 12:45:03,094 INFO L204 MainTranslator]: Completed translation [2024-11-13 12:45:03,095 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:45:03 WrapperNode [2024-11-13 12:45:03,095 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 12:45:03,096 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 12:45:03,096 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 12:45:03,096 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 12:45:03,103 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:45:03" (1/1) ... [2024-11-13 12:45:03,155 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:45:03" (1/1) ... [2024-11-13 12:45:03,484 INFO L138 Inliner]: procedures = 396, calls = 207, calls flagged for inlining = 53, calls inlined = 218, statements flattened = 7615 [2024-11-13 12:45:03,485 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 12:45:03,486 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 12:45:03,486 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 12:45:03,486 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 12:45:03,497 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:45:03" (1/1) ... [2024-11-13 12:45:03,497 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:45:03" (1/1) ... [2024-11-13 12:45:03,680 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:45:03" (1/1) ... [2024-11-13 12:45:03,681 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:45:03" (1/1) ... [2024-11-13 12:45:04,059 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:45:03" (1/1) ... [2024-11-13 12:45:04,168 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:45:03" (1/1) ... [2024-11-13 12:45:04,204 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:45:03" (1/1) ... [2024-11-13 12:45:04,229 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:45:03" (1/1) ... [2024-11-13 12:45:04,284 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 12:45:04,286 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 12:45:04,286 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 12:45:04,286 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 12:45:04,287 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:45:03" (1/1) ... [2024-11-13 12:45:04,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 12:45:04,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0e1836-e339-4645-a337-0af2ab86935d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:45:04,319 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0e1836-e339-4645-a337-0af2ab86935d/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 12:45:04,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f0e1836-e339-4645-a337-0af2ab86935d/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 12:45:04,349 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-13 12:45:04,349 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-13 12:45:04,349 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-13 12:45:04,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 12:45:04,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-13 12:45:04,350 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush2 [2024-11-13 12:45:04,350 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush2 [2024-11-13 12:45:04,350 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush1 [2024-11-13 12:45:04,350 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush1 [2024-11-13 12:45:04,350 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush0 [2024-11-13 12:45:04,350 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush0 [2024-11-13 12:45:04,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 12:45:04,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 12:45:04,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-13 12:45:04,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-13 12:45:04,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-13 12:45:04,351 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop5 [2024-11-13 12:45:04,351 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop5 [2024-11-13 12:45:04,351 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop6 [2024-11-13 12:45:04,352 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop6 [2024-11-13 12:45:04,352 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop3 [2024-11-13 12:45:04,352 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop3 [2024-11-13 12:45:04,352 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop4 [2024-11-13 12:45:04,352 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop4 [2024-11-13 12:45:04,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-13 12:45:04,356 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 12:45:04,905 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 12:45:04,906 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 12:45:15,296 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 12:45:15,296 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 12:45:26,796 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 12:45:26,796 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-13 12:45:26,796 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 12:45:26 BoogieIcfgContainer [2024-11-13 12:45:26,797 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 12:45:26,799 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 12:45:26,799 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 12:45:26,804 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 12:45:26,805 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 12:45:01" (1/3) ... [2024-11-13 12:45:26,805 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45b10999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 12:45:26, skipping insertion in model container [2024-11-13 12:45:26,806 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:45:03" (2/3) ... [2024-11-13 12:45:26,806 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45b10999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 12:45:26, skipping insertion in model container [2024-11-13 12:45:26,806 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 12:45:26" (3/3) ... [2024-11-13 12:45:26,808 INFO L112 eAbstractionObserver]: Analyzing ICFG elimination_backoff_stack.i [2024-11-13 12:45:26,826 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 12:45:26,828 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG elimination_backoff_stack.i that has 8 procedures, 4482 locations, 1 initial locations, 0 loop locations, and 621 error locations. [2024-11-13 12:45:26,829 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 12:45:29,434 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 12:45:29,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 4503 places, 4628 transitions, 9284 flow [2024-11-13 12:45:44,529 INFO L124 PetriNetUnfolderBase]: 147/4621 cut-off events. [2024-11-13 12:45:44,531 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 12:45:45,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4643 conditions, 4621 events. 147/4621 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 35705 event pairs, 0 based on Foata normal form. 0/3853 useless extension candidates. Maximal degree in co-relation 4548. Up to 6 conditions per place. [2024-11-13 12:45:45,090 INFO L82 GeneralOperation]: Start removeDead. Operand has 4503 places, 4628 transitions, 9284 flow [2024-11-13 12:45:45,612 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 4496 places, 4621 transitions, 9263 flow [2024-11-13 12:45:45,620 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 12:45:45,637 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;@36c6d0e8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 12:45:45,638 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1248 error locations. [2024-11-13 12:45:45,652 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 12:45:45,652 INFO L124 PetriNetUnfolderBase]: 0/70 cut-off events. [2024-11-13 12:45:45,653 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 12:45:45,653 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 12:45:45,654 INFO L204 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] [2024-11-13 12:45:45,655 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [instrPop3Err0ASSERT_VIOLATIONDATA_RACE, instrPop3Err1ASSERT_VIOLATIONDATA_RACE, instrPop3Err2ASSERT_VIOLATIONDATA_RACE, instrPop3Err3ASSERT_VIOLATIONDATA_RACE (and 1244 more)] === [2024-11-13 12:45:45,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:45:45,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1514740097, now seen corresponding path program 1 times [2024-11-13 12:45:45,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:45:45,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680308637] [2024-11-13 12:45:45,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:45:45,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:45:45,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:45:47,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:45:47,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:45:47,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680308637] [2024-11-13 12:45:47,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680308637] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:45:47,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:45:47,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 12:45:47,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595241323] [2024-11-13 12:45:47,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:45:47,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 12:45:47,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:45:47,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 12:45:47,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-13 12:45:52,359 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3027 out of 4628 [2024-11-13 12:45:52,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 4496 places, 4621 transitions, 9263 flow. Second operand has 6 states, 6 states have (on average 3028.3333333333335) internal successors, (18170), 6 states have internal predecessors, (18170), 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) [2024-11-13 12:45:52,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 12:45:52,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3027 of 4628 [2024-11-13 12:45:52,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand