./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-complex/elimination_backoff_stack.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-09-02_08-21-23.files/protection-local/elimination_backoff_stack.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e94c40da Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/GemCutterReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-complex/elimination_backoff_stack.i ./goblint.2024-09-02_08-21-23.files/protection-local/elimination_backoff_stack.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.positions.where.we.compute.the.hoare.annotation None --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-dev-e94c40d-m [2024-09-24 16:33:25,352 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-24 16:33:25,412 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2024-09-24 16:33:25,417 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-24 16:33:25,417 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-24 16:33:25,437 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-24 16:33:25,437 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-24 16:33:25,438 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-24 16:33:25,438 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-24 16:33:25,438 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-24 16:33:25,439 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-24 16:33:25,439 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-24 16:33:25,440 INFO L153 SettingsManager]: * Use SBE=true [2024-09-24 16:33:25,443 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-24 16:33:25,443 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-24 16:33:25,443 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-24 16:33:25,444 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-24 16:33:25,444 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-24 16:33:25,444 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-24 16:33:25,444 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-24 16:33:25,444 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-24 16:33:25,445 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-24 16:33:25,445 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-24 16:33:25,445 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-24 16:33:25,446 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-24 16:33:25,446 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-24 16:33:25,446 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-24 16:33:25,446 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-24 16:33:25,446 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-24 16:33:25,446 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-24 16:33:25,446 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-09-24 16:33:25,447 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-24 16:33:25,447 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-24 16:33:25,447 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-24 16:33:25,447 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-24 16:33:25,447 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2024-09-24 16:33:25,447 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-24 16:33:25,447 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-24 16:33:25,448 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-09-24 16:33:25,448 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-09-24 16:33:25,448 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-09-24 16:33:25,449 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-09-24 16:33:25,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-24 16:33:25,718 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-24 16:33:25,721 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-24 16:33:25,722 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-24 16:33:25,723 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-24 16:33:25,724 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/./goblint.2024-09-02_08-21-23.files/protection-local/elimination_backoff_stack.yml/witness.yml [2024-09-24 16:33:25,788 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-24 16:33:25,788 INFO L274 PluginConnector]: CDTParser initialized [2024-09-24 16:33:25,789 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/pthread-complex/elimination_backoff_stack.i [2024-09-24 16:33:27,091 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-24 16:33:27,348 INFO L384 CDTParser]: Found 1 translation units. [2024-09-24 16:33:27,349 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-complex/elimination_backoff_stack.i [2024-09-24 16:33:27,373 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/43d649e02/2ab8d751070c4e88afcd36976b5ba1b1/FLAGbb938ccdf [2024-09-24 16:33:27,390 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/43d649e02/2ab8d751070c4e88afcd36976b5ba1b1 [2024-09-24 16:33:27,390 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-24 16:33:27,391 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-24 16:33:27,394 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-24 16:33:27,397 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-24 16:33:27,402 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-24 16:33:27,403 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 24.09 04:33:25" (1/2) ... [2024-09-24 16:33:27,404 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c1a6bc3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 24.09 04:33:27, skipping insertion in model container [2024-09-24 16:33:27,404 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 24.09 04:33:25" (1/2) ... [2024-09-24 16:33:27,406 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@776672c6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 24.09 04:33:27, skipping insertion in model container [2024-09-24 16:33:27,406 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:33:27" (2/2) ... [2024-09-24 16:33:27,407 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c1a6bc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:33:27, skipping insertion in model container [2024-09-24 16:33:27,407 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:33:27" (2/2) ... [2024-09-24 16:33:27,446 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-24 16:33:27,446 INFO L1541 ArrayList]: Location invariant before [L1400-L1400] 0 <= unique_id [2024-09-24 16:33:27,446 INFO L1541 ArrayList]: Location invariant before [L1387-L1392] 0 <= unique_id [2024-09-24 16:33:27,447 INFO L1541 ArrayList]: Location invariant before [L1409-L1409] 0 <= unique_id [2024-09-24 16:33:27,447 INFO L1541 ArrayList]: Location invariant before [L1552-L1552] 0 <= unique_id [2024-09-24 16:33:27,447 INFO L1541 ArrayList]: Location invariant before [L1564-L1564] 0 <= unique_id [2024-09-24 16:33:27,447 INFO L1541 ArrayList]: Location invariant before [L1355-L1360] 0 <= unique_id [2024-09-24 16:33:27,447 INFO L1541 ArrayList]: Location invariant before [L1517-L1517] 0 <= unique_id [2024-09-24 16:33:27,447 INFO L1541 ArrayList]: Location invariant before [L1528-L1528] 0 <= unique_id [2024-09-24 16:33:27,447 INFO L1541 ArrayList]: Location invariant before [L1559-L1559] 0 <= unique_id [2024-09-24 16:33:27,447 INFO L1541 ArrayList]: Location invariant before [L1491-L1491] 0 <= unique_id [2024-09-24 16:33:27,447 INFO L1541 ArrayList]: Location invariant before [L1481-L1485] 0 <= unique_id [2024-09-24 16:33:27,447 INFO L1541 ArrayList]: Location invariant before [L1367-L1372] 0 <= unique_id [2024-09-24 16:33:27,447 INFO L1541 ArrayList]: Location invariant before [L1547-L1547] 0 <= unique_id [2024-09-24 16:33:27,448 INFO L1541 ArrayList]: Location invariant before [L1466-L1466] 0 <= unique_id [2024-09-24 16:33:27,486 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-24 16:33:27,963 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-24 16:33:27,979 INFO L200 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-09-24 16:33:28,082 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-24 16:33:28,135 INFO L204 MainTranslator]: Completed translation [2024-09-24 16:33:28,136 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:33:28 WrapperNode [2024-09-24 16:33:28,136 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-24 16:33:28,137 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-24 16:33:28,137 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-24 16:33:28,137 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-24 16:33:28,143 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:33:28" (1/1) ... [2024-09-24 16:33:28,171 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:33:28" (1/1) ... [2024-09-24 16:33:28,326 INFO L138 Inliner]: procedures = 396, calls = 191, calls flagged for inlining = 53, calls inlined = 218, statements flattened = 4004 [2024-09-24 16:33:28,327 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-24 16:33:28,328 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-24 16:33:28,328 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-24 16:33:28,328 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-24 16:33:28,335 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:33:28" (1/1) ... [2024-09-24 16:33:28,335 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:33:28" (1/1) ... [2024-09-24 16:33:28,356 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:33:28" (1/1) ... [2024-09-24 16:33:28,357 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:33:28" (1/1) ... [2024-09-24 16:33:28,410 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:33:28" (1/1) ... [2024-09-24 16:33:28,428 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:33:28" (1/1) ... [2024-09-24 16:33:28,445 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:33:28" (1/1) ... [2024-09-24 16:33:28,463 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:33:28" (1/1) ... [2024-09-24 16:33:28,483 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-24 16:33:28,484 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-24 16:33:28,484 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-24 16:33:28,484 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-24 16:33:28,485 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:33:28" (1/1) ... [2024-09-24 16:33:28,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-09-24 16:33:28,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-24 16:33:28,507 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-09-24 16:33:28,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-09-24 16:33:28,541 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-09-24 16:33:28,541 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-09-24 16:33:28,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-09-24 16:33:28,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-24 16:33:28,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-09-24 16:33:28,541 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush2 [2024-09-24 16:33:28,541 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush2 [2024-09-24 16:33:28,542 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush1 [2024-09-24 16:33:28,542 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush1 [2024-09-24 16:33:28,542 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush0 [2024-09-24 16:33:28,542 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush0 [2024-09-24 16:33:28,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-24 16:33:28,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-24 16:33:28,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-09-24 16:33:28,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-09-24 16:33:28,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-09-24 16:33:28,542 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop5 [2024-09-24 16:33:28,543 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop5 [2024-09-24 16:33:28,543 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop6 [2024-09-24 16:33:28,543 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop6 [2024-09-24 16:33:28,543 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop3 [2024-09-24 16:33:28,543 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop3 [2024-09-24 16:33:28,543 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop4 [2024-09-24 16:33:28,543 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop4 [2024-09-24 16:33:28,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-24 16:33:28,546 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-09-24 16:33:28,807 INFO L242 CfgBuilder]: Building ICFG [2024-09-24 16:33:28,808 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-24 16:33:31,690 INFO L287 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-09-24 16:33:31,691 INFO L291 CfgBuilder]: Performing block encoding [2024-09-24 16:33:34,072 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-24 16:33:34,072 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-24 16:33:34,072 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:33:34 BoogieIcfgContainer [2024-09-24 16:33:34,072 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-24 16:33:34,076 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-24 16:33:34,076 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-24 16:33:34,078 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-24 16:33:34,079 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 24.09 04:33:25" (1/4) ... [2024-09-24 16:33:34,080 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@677b9e5e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 24.09 04:33:34, skipping insertion in model container [2024-09-24 16:33:34,080 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:33:27" (2/4) ... [2024-09-24 16:33:34,081 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@677b9e5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:33:34, skipping insertion in model container [2024-09-24 16:33:34,081 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:33:28" (3/4) ... [2024-09-24 16:33:34,083 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@677b9e5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:33:34, skipping insertion in model container [2024-09-24 16:33:34,083 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:33:34" (4/4) ... [2024-09-24 16:33:34,084 INFO L112 eAbstractionObserver]: Analyzing ICFG elimination_backoff_stack.i [2024-09-24 16:33:34,100 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-24 16:33:34,100 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 116 error locations. [2024-09-24 16:33:34,100 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-09-24 16:33:34,701 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-09-24 16:33:34,755 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-24 16:33:34,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-09-24 16:33:34,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-24 16:33:34,757 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-09-24 16:33:34,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2024-09-24 16:33:34,788 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-09-24 16:33:34,800 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == instrPop6Thread1of1ForFork1 ======== [2024-09-24 16:33:34,807 INFO L336 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=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@4f892d6d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-24 16:33:34,808 INFO L337 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-09-24 16:33:51,224 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting instrPop6Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [instrPop6Err0ASSERT_VIOLATIONWITNESS_INVARIANT, instrPop6Err1ASSERT_VIOLATIONWITNESS_INVARIANT, instrPop6Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] === [2024-09-24 16:33:51,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 16:33:51,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1967708466, now seen corresponding path program 1 times [2024-09-24 16:33:51,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 16:33:51,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026307896] [2024-09-24 16:33:51,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 16:33:51,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 16:33:51,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 16:33:51,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 16:33:51,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 16:33:51,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026307896] [2024-09-24 16:33:51,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026307896] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 16:33:51,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 16:33:51,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-24 16:33:51,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931310691] [2024-09-24 16:33:51,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 16:33:51,646 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-24 16:33:51,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 16:33:51,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-24 16:33:51,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-24 16:33:51,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 16:33:51,669 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-24 16:33:51,670 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 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) [2024-09-24 16:33:51,670 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-24 16:34:18,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-24 16:34:18,933 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-24 16:34:18,933 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting instrPop6Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [instrPop6Err0ASSERT_VIOLATIONWITNESS_INVARIANT, instrPop6Err1ASSERT_VIOLATIONWITNESS_INVARIANT, instrPop6Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] === [2024-09-24 16:34:18,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 16:34:18,934 INFO L85 PathProgramCache]: Analyzing trace with hash 300574749, now seen corresponding path program 1 times [2024-09-24 16:34:18,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 16:34:18,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843907459] [2024-09-24 16:34:18,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 16:34:18,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 16:34:18,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 16:34:19,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 16:34:19,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 16:34:19,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843907459] [2024-09-24 16:34:19,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843907459] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 16:34:19,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 16:34:19,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-24 16:34:19,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505877874] [2024-09-24 16:34:19,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 16:34:19,089 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-24 16:34:19,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 16:34:19,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-24 16:34:19,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-24 16:34:19,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 16:34:19,091 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-24 16:34:19,091 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 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) [2024-09-24 16:34:19,091 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-24 16:34:19,091 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. Killed by 15