./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.2024-08-20_10-08-36.files/protection-local/elimination_backoff_stack.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version da67795f 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.2024-08-20_10-08-36.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.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-eval-da67795-m [2024-08-27 03:30:53,624 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-08-27 03:30:53,682 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2024-08-27 03:30:53,687 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-08-27 03:30:53,687 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-08-27 03:30:53,705 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-08-27 03:30:53,706 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-08-27 03:30:53,706 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-08-27 03:30:53,707 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-08-27 03:30:53,708 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-08-27 03:30:53,708 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-08-27 03:30:53,708 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-08-27 03:30:53,708 INFO L153 SettingsManager]: * Use SBE=true [2024-08-27 03:30:53,709 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-08-27 03:30:53,709 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-08-27 03:30:53,709 INFO L153 SettingsManager]: * sizeof long=4 [2024-08-27 03:30:53,710 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-08-27 03:30:53,710 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-08-27 03:30:53,710 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-08-27 03:30:53,710 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-08-27 03:30:53,710 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-08-27 03:30:53,712 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-08-27 03:30:53,712 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-08-27 03:30:53,712 INFO L153 SettingsManager]: * sizeof long double=12 [2024-08-27 03:30:53,712 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-08-27 03:30:53,712 INFO L153 SettingsManager]: * Use constant arrays=true [2024-08-27 03:30:53,713 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-08-27 03:30:53,713 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-08-27 03:30:53,713 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-08-27 03:30:53,713 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-08-27 03:30:53,713 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-08-27 03:30:53,714 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-08-27 03:30:53,714 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-08-27 03:30:53,714 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-08-27 03:30:53,714 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-08-27 03:30:53,714 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2024-08-27 03:30:53,714 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-08-27 03:30:53,714 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-08-27 03:30:53,714 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-08-27 03:30:53,714 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-08-27 03:30:53,715 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-08-27 03:30:53,715 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-08-27 03:30:53,715 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-08-27 03:30:53,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-08-27 03:30:53,925 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-08-27 03:30:53,927 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-08-27 03:30:53,928 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-08-27 03:30:53,928 INFO L274 PluginConnector]: Witness Parser initialized [2024-08-27 03:30:53,929 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/./goblint.2024-08-20_10-08-36.files/protection-local/elimination_backoff_stack.yml/witness.yml [2024-08-27 03:30:54,003 INFO L270 PluginConnector]: Initializing CDTParser... [2024-08-27 03:30:54,004 INFO L274 PluginConnector]: CDTParser initialized [2024-08-27 03:30:54,004 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/pthread-complex/elimination_backoff_stack.i [2024-08-27 03:30:55,283 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-08-27 03:30:55,524 INFO L384 CDTParser]: Found 1 translation units. [2024-08-27 03:30:55,525 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-complex/elimination_backoff_stack.i [2024-08-27 03:30:55,550 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/aec9fee9a/0c4f49d62e6242a9a7ddd97d07b80fea/FLAG2b415f441 [2024-08-27 03:30:55,566 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/aec9fee9a/0c4f49d62e6242a9a7ddd97d07b80fea [2024-08-27 03:30:55,567 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-08-27 03:30:55,568 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-08-27 03:30:55,568 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-08-27 03:30:55,569 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-08-27 03:30:55,574 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-08-27 03:30:55,574 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.08 03:30:54" (1/2) ... [2024-08-27 03:30:55,575 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61efbdef and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.08 03:30:55, skipping insertion in model container [2024-08-27 03:30:55,575 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.08 03:30:54" (1/2) ... [2024-08-27 03:30:55,577 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3e1bc7b9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.08 03:30:55, skipping insertion in model container [2024-08-27 03:30:55,577 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:30:55" (2/2) ... [2024-08-27 03:30:55,577 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61efbdef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:30:55, skipping insertion in model container [2024-08-27 03:30:55,578 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:30:55" (2/2) ... [2024-08-27 03:30:55,578 INFO L85 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-08-27 03:30:55,682 INFO L99 nessWitnessExtractor]: Found the following entries in the witness: [2024-08-27 03:30:55,682 INFO L1541 ArrayList]: Location invariant before [L1466-L1466] 0 <= unique_id [2024-08-27 03:30:55,686 INFO L1541 ArrayList]: Location invariant before [L1559-L1559] 0 <= unique_id [2024-08-27 03:30:55,686 INFO L1541 ArrayList]: Location invariant before [L1528-L1528] 0 <= unique_id [2024-08-27 03:30:55,686 INFO L1541 ArrayList]: Location invariant before [L1517-L1517] 0 <= unique_id [2024-08-27 03:30:55,686 INFO L1541 ArrayList]: Location invariant before [L1547-L1547] 0 <= unique_id [2024-08-27 03:30:55,686 INFO L1541 ArrayList]: Location invariant before [L1491-L1491] 0 <= unique_id [2024-08-27 03:30:55,687 INFO L1541 ArrayList]: Location invariant before [L1564-L1564] 0 <= unique_id [2024-08-27 03:30:55,687 INFO L1541 ArrayList]: Location invariant before [L1409-L1409] 0 <= unique_id [2024-08-27 03:30:55,687 INFO L1541 ArrayList]: Location invariant before [L1400-L1400] 0 <= unique_id [2024-08-27 03:30:55,687 INFO L1541 ArrayList]: Location invariant before [L1481-L1485] 0 <= unique_id [2024-08-27 03:30:55,687 INFO L1541 ArrayList]: Location invariant before [L1367-L1372] 0 <= unique_id [2024-08-27 03:30:55,687 INFO L1541 ArrayList]: Location invariant before [L1355-L1360] 0 <= unique_id [2024-08-27 03:30:55,687 INFO L1541 ArrayList]: Location invariant before [L1552-L1552] 0 <= unique_id [2024-08-27 03:30:55,687 INFO L1541 ArrayList]: Location invariant before [L1387-L1392] 0 <= unique_id [2024-08-27 03:30:55,741 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-08-27 03:30:56,200 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-08-27 03:30:56,221 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 Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-08-27 03:30:56,298 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-08-27 03:30:56,356 INFO L206 MainTranslator]: Completed translation [2024-08-27 03:30:56,357 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:30:56 WrapperNode [2024-08-27 03:30:56,357 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-08-27 03:30:56,358 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-08-27 03:30:56,358 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-08-27 03:30:56,358 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-08-27 03:30:56,364 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:30:56" (1/1) ... [2024-08-27 03:30:56,395 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:30:56" (1/1) ... [2024-08-27 03:30:56,503 INFO L138 Inliner]: procedures = 396, calls = 191, calls flagged for inlining = 53, calls inlined = 218, statements flattened = 4004 [2024-08-27 03:30:56,503 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-08-27 03:30:56,505 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-08-27 03:30:56,505 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-08-27 03:30:56,505 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-08-27 03:30:56,513 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:30:56" (1/1) ... [2024-08-27 03:30:56,513 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:30:56" (1/1) ... [2024-08-27 03:30:56,538 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:30:56" (1/1) ... [2024-08-27 03:30:56,539 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:30:56" (1/1) ... [2024-08-27 03:30:56,646 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:30:56" (1/1) ... [2024-08-27 03:30:56,656 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:30:56" (1/1) ... [2024-08-27 03:30:56,665 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:30:56" (1/1) ... [2024-08-27 03:30:56,685 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:30:56" (1/1) ... [2024-08-27 03:30:56,704 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-08-27 03:30:56,705 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-08-27 03:30:56,706 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-08-27 03:30:56,706 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-08-27 03:30:56,707 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:30:56" (1/1) ... [2024-08-27 03:30:56,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-08-27 03:30:56,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-27 03:30:56,735 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) [2024-08-27 03:30:56,737 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 [2024-08-27 03:30:56,768 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-08-27 03:30:56,768 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-08-27 03:30:56,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-08-27 03:30:56,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-08-27 03:30:56,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-08-27 03:30:56,768 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush2 [2024-08-27 03:30:56,768 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush2 [2024-08-27 03:30:56,769 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush1 [2024-08-27 03:30:56,769 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush1 [2024-08-27 03:30:56,769 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush0 [2024-08-27 03:30:56,769 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush0 [2024-08-27 03:30:56,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-08-27 03:30:56,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-08-27 03:30:56,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-08-27 03:30:56,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-08-27 03:30:56,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-08-27 03:30:56,769 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop5 [2024-08-27 03:30:56,769 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop5 [2024-08-27 03:30:56,769 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop6 [2024-08-27 03:30:56,770 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop6 [2024-08-27 03:30:56,770 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop3 [2024-08-27 03:30:56,770 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop3 [2024-08-27 03:30:56,770 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop4 [2024-08-27 03:30:56,770 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop4 [2024-08-27 03:30:56,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-08-27 03:30:56,773 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-08-27 03:30:57,073 INFO L242 CfgBuilder]: Building ICFG [2024-08-27 03:30:57,075 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-08-27 03:30:59,912 INFO L287 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-08-27 03:30:59,912 INFO L291 CfgBuilder]: Performing block encoding [2024-08-27 03:31:02,233 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-08-27 03:31:02,236 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-08-27 03:31:02,236 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:31:02 BoogieIcfgContainer [2024-08-27 03:31:02,237 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-08-27 03:31:02,238 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-08-27 03:31:02,238 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-08-27 03:31:02,241 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-08-27 03:31:02,241 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.08 03:30:54" (1/4) ... [2024-08-27 03:31:02,242 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67b91d4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.08 03:31:02, skipping insertion in model container [2024-08-27 03:31:02,242 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 03:30:55" (2/4) ... [2024-08-27 03:31:02,242 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67b91d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 03:31:02, skipping insertion in model container [2024-08-27 03:31:02,242 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:30:56" (3/4) ... [2024-08-27 03:31:02,242 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67b91d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 03:31:02, skipping insertion in model container [2024-08-27 03:31:02,243 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:31:02" (4/4) ... [2024-08-27 03:31:02,244 INFO L112 eAbstractionObserver]: Analyzing ICFG elimination_backoff_stack.i [2024-08-27 03:31:02,258 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-08-27 03:31:02,258 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 116 error locations. [2024-08-27 03:31:02,258 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-08-27 03:31:02,817 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-08-27 03:31:02,864 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-27 03:31:02,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-27 03:31:02,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-27 03:31:02,867 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) [2024-08-27 03:31:02,868 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 [2024-08-27 03:31:02,897 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-27 03:31:02,907 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == instrPop6Thread1of1ForFork1 ======== [2024-08-27 03:31:02,911 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;@4f6a3838, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-27 03:31:02,913 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-08-27 03:31:17,554 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting instrPop6Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [instrPop6Err0ASSERT_VIOLATIONWITNESS_INVARIANT, instrPop6Err1ASSERT_VIOLATIONWITNESS_INVARIANT, instrPop6Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] === [2024-08-27 03:31:17,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-27 03:31:17,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1967708466, now seen corresponding path program 1 times [2024-08-27 03:31:17,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-27 03:31:17,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99744226] [2024-08-27 03:31:17,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-27 03:31:17,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-27 03:31:17,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-27 03:31:17,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-08-27 03:31:17,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-27 03:31:17,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99744226] [2024-08-27 03:31:17,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99744226] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-27 03:31:17,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-27 03:31:17,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-27 03:31:17,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133606533] [2024-08-27 03:31:17,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-27 03:31:17,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-27 03:31:17,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-27 03:31:17,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-27 03:31:17,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-27 03:31:17,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-27 03:31:17,939 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-27 03:31:17,940 INFO L496 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) [2024-08-27 03:31:17,940 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-27 03:31:44,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-27 03:31:44,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-08-27 03:31:44,831 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting instrPop6Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [instrPop6Err0ASSERT_VIOLATIONWITNESS_INVARIANT, instrPop6Err1ASSERT_VIOLATIONWITNESS_INVARIANT, instrPop6Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] === [2024-08-27 03:31:44,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-27 03:31:44,831 INFO L85 PathProgramCache]: Analyzing trace with hash 300574749, now seen corresponding path program 1 times [2024-08-27 03:31:44,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-27 03:31:44,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256610277] [2024-08-27 03:31:44,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-27 03:31:44,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-27 03:31:44,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-27 03:31:45,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-08-27 03:31:45,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-27 03:31:45,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256610277] [2024-08-27 03:31:45,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256610277] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-27 03:31:45,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-27 03:31:45,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-27 03:31:45,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117113807] [2024-08-27 03:31:45,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-27 03:31:45,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-27 03:31:45,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-27 03:31:45,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-27 03:31:45,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-08-27 03:31:45,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-27 03:31:45,067 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-27 03:31:45,067 INFO L496 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) [2024-08-27 03:31:45,067 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-27 03:31:45,067 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. Killed by 15