./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.2024-08-08_07-59-58.files/protection-ghost/elimination_backoff_stack.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7bc0c755 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.2024-08-08_07-59-58.files/protection-ghost/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.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.goblint-validation-atomicfix-7bc0c75-m [2024-08-23 15:39:31,668 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-08-23 15:39:31,721 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2024-08-23 15:39:31,726 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-08-23 15:39:31,726 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-08-23 15:39:31,751 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-08-23 15:39:31,752 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-08-23 15:39:31,752 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-08-23 15:39:31,753 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-08-23 15:39:31,753 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-08-23 15:39:31,754 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-08-23 15:39:31,754 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-08-23 15:39:31,754 INFO L153 SettingsManager]: * Use SBE=true [2024-08-23 15:39:31,755 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-08-23 15:39:31,755 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-08-23 15:39:31,756 INFO L153 SettingsManager]: * sizeof long=4 [2024-08-23 15:39:31,757 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-08-23 15:39:31,759 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-08-23 15:39:31,759 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-08-23 15:39:31,759 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-08-23 15:39:31,759 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-08-23 15:39:31,760 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-08-23 15:39:31,761 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-08-23 15:39:31,761 INFO L153 SettingsManager]: * sizeof long double=12 [2024-08-23 15:39:31,761 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-08-23 15:39:31,761 INFO L153 SettingsManager]: * Use constant arrays=true [2024-08-23 15:39:31,762 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-08-23 15:39:31,762 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-08-23 15:39:31,762 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-08-23 15:39:31,762 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-08-23 15:39:31,763 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-08-23 15:39:31,763 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-08-23 15:39:31,764 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-08-23 15:39:31,764 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-08-23 15:39:31,764 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-08-23 15:39:31,764 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2024-08-23 15:39:31,764 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-08-23 15:39:31,765 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-08-23 15:39:31,765 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-08-23 15:39:31,765 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-08-23 15:39:31,765 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-08-23 15:39:31,765 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-08-23 15:39:31,766 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-08-23 15:39:31,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-08-23 15:39:31,986 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-08-23 15:39:31,988 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-08-23 15:39:31,989 INFO L270 PluginConnector]: Initializing CDTParser... [2024-08-23 15:39:31,989 INFO L274 PluginConnector]: CDTParser initialized [2024-08-23 15:39:31,990 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/pthread-complex/elimination_backoff_stack.i [2024-08-23 15:39:33,148 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-08-23 15:39:33,414 INFO L384 CDTParser]: Found 1 translation units. [2024-08-23 15:39:33,415 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-complex/elimination_backoff_stack.i [2024-08-23 15:39:33,435 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/fe7d81e14/f64eb3ef72444056ac43e22dc889a679/FLAGb763ac108 [2024-08-23 15:39:33,450 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/fe7d81e14/f64eb3ef72444056ac43e22dc889a679 [2024-08-23 15:39:33,452 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-08-23 15:39:33,453 INFO L274 PluginConnector]: Witness Parser initialized [2024-08-23 15:39:33,454 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/./goblint.2024-08-08_07-59-58.files/protection-ghost/elimination_backoff_stack.yml/witness.yml [2024-08-23 15:39:33,524 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-08-23 15:39:33,525 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-08-23 15:39:33,526 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-08-23 15:39:33,526 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-08-23 15:39:33,530 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-08-23 15:39:33,531 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.08 03:39:33" (1/2) ... [2024-08-23 15:39:33,531 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52ffcd04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 03:39:33, skipping insertion in model container [2024-08-23 15:39:33,532 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.08 03:39:33" (1/2) ... [2024-08-23 15:39:33,534 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7e4f07bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 03:39:33, skipping insertion in model container [2024-08-23 15:39:33,534 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 23.08 03:39:33" (2/2) ... [2024-08-23 15:39:33,535 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52ffcd04 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 23.08 03:39:33, skipping insertion in model container [2024-08-23 15:39:33,535 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 23.08 03:39:33" (2/2) ... [2024-08-23 15:39:33,536 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-08-23 15:39:33,576 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-08-23 15:39:33,577 INFO L97 edCorrectnessWitness]: Location invariant before [L1618-L1618] ! multithreaded || 0 <= unique_id [2024-08-23 15:39:33,577 INFO L97 edCorrectnessWitness]: Location invariant before [L1616-L1616] ! multithreaded || 0 <= unique_id [2024-08-23 15:39:33,577 INFO L97 edCorrectnessWitness]: Location invariant before [L1619-L1619] ! multithreaded || 0 <= unique_id [2024-08-23 15:39:33,577 INFO L97 edCorrectnessWitness]: Location invariant before [L1617-L1617] ! multithreaded || 0 <= unique_id [2024-08-23 15:39:33,577 INFO L97 edCorrectnessWitness]: Location invariant before [L1620-L1620] ! multithreaded || 0 <= unique_id [2024-08-23 15:39:33,578 INFO L97 edCorrectnessWitness]: Location invariant before [L1615-L1615] ! multithreaded || 0 <= unique_id [2024-08-23 15:39:33,578 INFO L97 edCorrectnessWitness]: Location invariant before [L1621-L1621] ! multithreaded || 0 <= unique_id [2024-08-23 15:39:33,578 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-08-23 15:39:33,578 INFO L106 edCorrectnessWitness]: ghost_update [L1614-L1614] multithreaded = 1; [2024-08-23 15:39:33,640 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-08-23 15:39:34,080 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-08-23 15:39:34,095 INFO L202 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 [2024-08-23 15:39:34,206 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-08-23 15:39:34,279 INFO L206 MainTranslator]: Completed translation [2024-08-23 15:39:34,280 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 23.08 03:39:34 WrapperNode [2024-08-23 15:39:34,280 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-08-23 15:39:34,280 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-08-23 15:39:34,281 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-08-23 15:39:34,281 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-08-23 15:39:34,285 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 23.08 03:39:34" (1/1) ... [2024-08-23 15:39:34,308 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 23.08 03:39:34" (1/1) ... [2024-08-23 15:39:34,410 INFO L138 Inliner]: procedures = 396, calls = 191, calls flagged for inlining = 53, calls inlined = 218, statements flattened = 3782 [2024-08-23 15:39:34,411 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-08-23 15:39:34,412 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-08-23 15:39:34,412 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-08-23 15:39:34,412 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-08-23 15:39:34,419 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 23.08 03:39:34" (1/1) ... [2024-08-23 15:39:34,419 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 23.08 03:39:34" (1/1) ... [2024-08-23 15:39:34,440 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 23.08 03:39:34" (1/1) ... [2024-08-23 15:39:34,440 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 23.08 03:39:34" (1/1) ... [2024-08-23 15:39:34,502 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 23.08 03:39:34" (1/1) ... [2024-08-23 15:39:34,519 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 23.08 03:39:34" (1/1) ... [2024-08-23 15:39:34,533 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 23.08 03:39:34" (1/1) ... [2024-08-23 15:39:34,547 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 23.08 03:39:34" (1/1) ... [2024-08-23 15:39:34,564 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-08-23 15:39:34,565 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-08-23 15:39:34,565 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-08-23 15:39:34,565 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-08-23 15:39:34,566 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 23.08 03:39:34" (1/1) ... [2024-08-23 15:39:34,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-08-23 15:39:34,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-23 15:39:34,592 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) [2024-08-23 15:39:34,593 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 [2024-08-23 15:39:34,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-08-23 15:39:34,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-08-23 15:39:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-08-23 15:39:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-08-23 15:39:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-08-23 15:39:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush2 [2024-08-23 15:39:34,618 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush2 [2024-08-23 15:39:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush1 [2024-08-23 15:39:34,618 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush1 [2024-08-23 15:39:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush0 [2024-08-23 15:39:34,618 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush0 [2024-08-23 15:39:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-08-23 15:39:34,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-08-23 15:39:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-08-23 15:39:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-08-23 15:39:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-08-23 15:39:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop5 [2024-08-23 15:39:34,619 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop5 [2024-08-23 15:39:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop6 [2024-08-23 15:39:34,619 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop6 [2024-08-23 15:39:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop3 [2024-08-23 15:39:34,619 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop3 [2024-08-23 15:39:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop4 [2024-08-23 15:39:34,620 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop4 [2024-08-23 15:39:34,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-08-23 15:39:34,623 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-08-23 15:39:34,901 INFO L243 CfgBuilder]: Building ICFG [2024-08-23 15:39:34,903 INFO L269 CfgBuilder]: Building CFG for each procedure with an implementation [2024-08-23 15:39:37,638 INFO L288 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-08-23 15:39:37,638 INFO L292 CfgBuilder]: Performing block encoding [2024-08-23 15:39:39,706 INFO L314 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-08-23 15:39:39,706 INFO L319 CfgBuilder]: Removed 0 assume(true) statements. [2024-08-23 15:39:39,706 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.08 03:39:39 BoogieIcfgContainer [2024-08-23 15:39:39,706 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-08-23 15:39:39,708 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-08-23 15:39:39,709 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-08-23 15:39:39,712 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-08-23 15:39:39,712 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.08 03:39:33" (1/4) ... [2024-08-23 15:39:39,712 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@175b7db0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.08 03:39:39, skipping insertion in model container [2024-08-23 15:39:39,712 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 23.08 03:39:33" (2/4) ... [2024-08-23 15:39:39,713 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@175b7db0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 23.08 03:39:39, skipping insertion in model container [2024-08-23 15:39:39,713 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 23.08 03:39:34" (3/4) ... [2024-08-23 15:39:39,713 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@175b7db0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 23.08 03:39:39, skipping insertion in model container [2024-08-23 15:39:39,713 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.08 03:39:39" (4/4) ... [2024-08-23 15:39:39,714 INFO L112 eAbstractionObserver]: Analyzing ICFG elimination_backoff_stack.i [2024-08-23 15:39:39,728 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-08-23 15:39:39,729 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-08-23 15:39:39,729 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-08-23 15:39:40,256 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-08-23 15:39:40,300 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-23 15:39:40,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-23 15:39:40,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-23 15:39:40,302 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) [2024-08-23 15:39:40,304 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 [2024-08-23 15:39:40,329 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-23 15:39:40,338 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-08-23 15:39:40,343 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, 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;@2df33b7a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-23 15:39:40,344 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-08-23 15:40:39,981 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 11 more)] === [2024-08-23 15:40:39,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-23 15:40:39,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1357614715, now seen corresponding path program 1 times [2024-08-23 15:40:39,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-23 15:40:39,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028529985] [2024-08-23 15:40:39,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-23 15:40:39,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-23 15:40:40,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-23 15:40:40,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-08-23 15:40:40,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-23 15:40:40,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028529985] [2024-08-23 15:40:40,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028529985] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-23 15:40:40,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-23 15:40:40,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-08-23 15:40:40,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906875466] [2024-08-23 15:40:40,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-23 15:40:40,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-23 15:40:40,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-23 15:40:40,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-23 15:40:40,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-08-23 15:40:40,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-23 15:40:40,434 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-23 15:40:40,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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) [2024-08-23 15:40:40,435 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-23 15:40:40,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-08-23 15:40:40,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-08-23 15:40:40,517 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 11 more)] === [2024-08-23 15:40:40,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-23 15:40:40,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1650779512, now seen corresponding path program 1 times [2024-08-23 15:40:40,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-23 15:40:40,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406148579] [2024-08-23 15:40:40,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-23 15:40:40,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-23 15:40:40,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-23 15:40:40,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-08-23 15:40:40,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-23 15:40:40,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406148579] [2024-08-23 15:40:40,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406148579] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-23 15:40:40,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-23 15:40:40,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-23 15:40:40,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253258164] [2024-08-23 15:40:40,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-23 15:40:40,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-23 15:40:40,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-23 15:40:40,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-23 15:40:40,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-08-23 15:40:40,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-23 15:40:40,625 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-23 15:40:40,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2024-08-23 15:40:40,626 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-08-23 15:40:40,626 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. Killed by 15