./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-local/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-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-validation-atomicfix-7bc0c75-m [2024-08-23 19:40:34,271 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-08-23 19:40:34,345 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2024-08-23 19:40:34,351 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-08-23 19:40:34,351 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-08-23 19:40:34,384 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-08-23 19:40:34,387 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-08-23 19:40:34,387 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-08-23 19:40:34,388 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-08-23 19:40:34,388 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-08-23 19:40:34,389 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-08-23 19:40:34,389 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-08-23 19:40:34,389 INFO L153 SettingsManager]: * Use SBE=true [2024-08-23 19:40:34,390 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-08-23 19:40:34,393 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-08-23 19:40:34,393 INFO L153 SettingsManager]: * sizeof long=4 [2024-08-23 19:40:34,396 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-08-23 19:40:34,396 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-08-23 19:40:34,396 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-08-23 19:40:34,397 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-08-23 19:40:34,397 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-08-23 19:40:34,401 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-08-23 19:40:34,401 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-08-23 19:40:34,402 INFO L153 SettingsManager]: * sizeof long double=12 [2024-08-23 19:40:34,402 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-08-23 19:40:34,402 INFO L153 SettingsManager]: * Use constant arrays=true [2024-08-23 19:40:34,402 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-08-23 19:40:34,403 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-08-23 19:40:34,403 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-08-23 19:40:34,403 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-08-23 19:40:34,403 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-08-23 19:40:34,404 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-08-23 19:40:34,404 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-08-23 19:40:34,404 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-08-23 19:40:34,404 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-08-23 19:40:34,404 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2024-08-23 19:40:34,405 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-08-23 19:40:34,405 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-08-23 19:40:34,406 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-08-23 19:40:34,406 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-08-23 19:40:34,407 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-08-23 19:40:34,407 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-08-23 19:40:34,407 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-08-23 19:40:34,642 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-08-23 19:40:34,668 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-08-23 19:40:34,672 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-08-23 19:40:34,673 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-08-23 19:40:34,673 INFO L274 PluginConnector]: Witness Parser initialized [2024-08-23 19:40:34,675 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/./goblint.2024-08-08_07-59-58.files/protection-local/elimination_backoff_stack.yml/witness.yml [2024-08-23 19:40:34,837 INFO L270 PluginConnector]: Initializing CDTParser... [2024-08-23 19:40:34,838 INFO L274 PluginConnector]: CDTParser initialized [2024-08-23 19:40:34,838 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/pthread-complex/elimination_backoff_stack.i [2024-08-23 19:40:36,249 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-08-23 19:40:36,580 INFO L384 CDTParser]: Found 1 translation units. [2024-08-23 19:40:36,582 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-complex/elimination_backoff_stack.i [2024-08-23 19:40:36,609 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/23f75a36b/c4af40f45eac4c68b7fb41bbc35839f5/FLAG73370b33c [2024-08-23 19:40:36,627 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/23f75a36b/c4af40f45eac4c68b7fb41bbc35839f5 [2024-08-23 19:40:36,627 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-08-23 19:40:36,629 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-08-23 19:40:36,630 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-08-23 19:40:36,630 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-08-23 19:40:36,635 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-08-23 19:40:36,636 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 23.08 07:40:34" (1/2) ... [2024-08-23 19:40:36,637 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@175866ad and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 23.08 07:40:36, skipping insertion in model container [2024-08-23 19:40:36,637 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 23.08 07:40:34" (1/2) ... [2024-08-23 19:40:36,639 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5cf66230 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 23.08 07:40:36, skipping insertion in model container [2024-08-23 19:40:36,641 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.08 07:40:36" (2/2) ... [2024-08-23 19:40:36,641 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@175866ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 07:40:36, skipping insertion in model container [2024-08-23 19:40:36,641 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.08 07:40:36" (2/2) ... [2024-08-23 19:40:36,642 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-08-23 19:40:36,720 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-08-23 19:40:36,721 INFO L97 edCorrectnessWitness]: Location invariant before [L1466-L1466] 0 <= unique_id [2024-08-23 19:40:36,721 INFO L97 edCorrectnessWitness]: Location invariant before [L1552-L1552] 0 <= unique_id [2024-08-23 19:40:36,721 INFO L97 edCorrectnessWitness]: Location invariant before [L1367-L1372] 0 <= unique_id [2024-08-23 19:40:36,721 INFO L97 edCorrectnessWitness]: Location invariant before [L1400-L1400] 0 <= unique_id [2024-08-23 19:40:36,722 INFO L97 edCorrectnessWitness]: Location invariant before [L1559-L1559] 0 <= unique_id [2024-08-23 19:40:36,722 INFO L97 edCorrectnessWitness]: Location invariant before [L1528-L1528] 0 <= unique_id [2024-08-23 19:40:36,722 INFO L97 edCorrectnessWitness]: Location invariant before [L1481-L1485] 0 <= unique_id [2024-08-23 19:40:36,722 INFO L97 edCorrectnessWitness]: Location invariant before [L1564-L1564] 0 <= unique_id [2024-08-23 19:40:36,722 INFO L97 edCorrectnessWitness]: Location invariant before [L1517-L1517] 0 <= unique_id [2024-08-23 19:40:36,722 INFO L97 edCorrectnessWitness]: Location invariant before [L1547-L1547] 0 <= unique_id [2024-08-23 19:40:36,722 INFO L97 edCorrectnessWitness]: Location invariant before [L1491-L1491] 0 <= unique_id [2024-08-23 19:40:36,723 INFO L97 edCorrectnessWitness]: Location invariant before [L1387-L1392] 0 <= unique_id [2024-08-23 19:40:36,723 INFO L97 edCorrectnessWitness]: Location invariant before [L1355-L1360] 0 <= unique_id [2024-08-23 19:40:36,723 INFO L97 edCorrectnessWitness]: Location invariant before [L1409-L1409] 0 <= unique_id [2024-08-23 19:40:36,771 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-08-23 19:40:37,267 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-08-23 19:40:37,294 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 [2024-08-23 19:40:37,454 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-08-23 19:40:37,546 INFO L206 MainTranslator]: Completed translation [2024-08-23 19:40:37,547 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 07:40:37 WrapperNode [2024-08-23 19:40:37,547 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-08-23 19:40:37,549 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-08-23 19:40:37,549 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-08-23 19:40:37,550 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-08-23 19:40:37,556 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 07:40:37" (1/1) ... [2024-08-23 19:40:37,592 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 07:40:37" (1/1) ... [2024-08-23 19:40:37,730 INFO L138 Inliner]: procedures = 396, calls = 191, calls flagged for inlining = 53, calls inlined = 218, statements flattened = 3888 [2024-08-23 19:40:37,731 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-08-23 19:40:37,732 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-08-23 19:40:37,733 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-08-23 19:40:37,733 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-08-23 19:40:37,742 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 07:40:37" (1/1) ... [2024-08-23 19:40:37,742 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 07:40:37" (1/1) ... [2024-08-23 19:40:37,774 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 07:40:37" (1/1) ... [2024-08-23 19:40:37,776 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 07:40:37" (1/1) ... [2024-08-23 19:40:37,860 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 07:40:37" (1/1) ... [2024-08-23 19:40:37,883 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 07:40:37" (1/1) ... [2024-08-23 19:40:37,947 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 07:40:37" (1/1) ... [2024-08-23 19:40:37,968 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 07:40:37" (1/1) ... [2024-08-23 19:40:37,995 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-08-23 19:40:37,999 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-08-23 19:40:37,999 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-08-23 19:40:37,999 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-08-23 19:40:38,000 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 07:40:37" (1/1) ... [2024-08-23 19:40:38,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-08-23 19:40:38,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-23 19:40:38,032 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 19:40:38,035 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 19:40:38,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-08-23 19:40:38,069 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-08-23 19:40:38,069 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-08-23 19:40:38,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-08-23 19:40:38,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-08-23 19:40:38,070 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush2 [2024-08-23 19:40:38,070 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush2 [2024-08-23 19:40:38,070 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush1 [2024-08-23 19:40:38,071 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush1 [2024-08-23 19:40:38,071 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush0 [2024-08-23 19:40:38,072 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush0 [2024-08-23 19:40:38,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-08-23 19:40:38,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-08-23 19:40:38,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-08-23 19:40:38,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-08-23 19:40:38,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-08-23 19:40:38,073 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop5 [2024-08-23 19:40:38,073 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop5 [2024-08-23 19:40:38,074 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop6 [2024-08-23 19:40:38,074 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop6 [2024-08-23 19:40:38,074 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop3 [2024-08-23 19:40:38,074 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop3 [2024-08-23 19:40:38,074 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop4 [2024-08-23 19:40:38,074 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop4 [2024-08-23 19:40:38,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-08-23 19:40:38,078 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 19:40:38,441 INFO L243 CfgBuilder]: Building ICFG [2024-08-23 19:40:38,443 INFO L269 CfgBuilder]: Building CFG for each procedure with an implementation [2024-08-23 19:40:41,930 INFO L288 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-08-23 19:40:41,931 INFO L292 CfgBuilder]: Performing block encoding [2024-08-23 19:40:45,284 INFO L314 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-08-23 19:40:45,284 INFO L319 CfgBuilder]: Removed 0 assume(true) statements. [2024-08-23 19:40:45,284 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.08 07:40:45 BoogieIcfgContainer [2024-08-23 19:40:45,285 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-08-23 19:40:45,288 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-08-23 19:40:45,288 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-08-23 19:40:45,294 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-08-23 19:40:45,295 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 23.08 07:40:34" (1/4) ... [2024-08-23 19:40:45,295 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@636c3d7e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 23.08 07:40:45, skipping insertion in model container [2024-08-23 19:40:45,295 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.08 07:40:36" (2/4) ... [2024-08-23 19:40:45,296 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@636c3d7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.08 07:40:45, skipping insertion in model container [2024-08-23 19:40:45,296 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 07:40:37" (3/4) ... [2024-08-23 19:40:45,296 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@636c3d7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.08 07:40:45, skipping insertion in model container [2024-08-23 19:40:45,297 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.08 07:40:45" (4/4) ... [2024-08-23 19:40:45,299 INFO L112 eAbstractionObserver]: Analyzing ICFG elimination_backoff_stack.i [2024-08-23 19:40:45,318 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-08-23 19:40:45,319 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 116 error locations. [2024-08-23 19:40:45,319 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-08-23 19:40:46,010 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-08-23 19:40:46,068 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-23 19:40:46,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-08-23 19:40:46,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-08-23 19:40:46,070 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 19:40:46,072 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 19:40:46,112 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-08-23 19:40:46,125 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == instrPush1Thread1of1ForFork0 ======== [2024-08-23 19:40:46,132 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;@5b218947, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-23 19:40:46,133 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2024-08-23 19:40:58,633 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting instrPush1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [instrPush1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, instrPush1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, instrPush1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 13 more)] === [2024-08-23 19:40:58,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-23 19:40:58,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1924638129, now seen corresponding path program 1 times [2024-08-23 19:40:58,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-23 19:40:58,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579231632] [2024-08-23 19:40:58,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-23 19:40:58,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-23 19:40:58,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-23 19:40:58,986 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 19:40:58,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-23 19:40:58,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579231632] [2024-08-23 19:40:58,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579231632] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-23 19:40:58,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-23 19:40:58,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-23 19:40:58,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246162423] [2024-08-23 19:40:58,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-23 19:40:58,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-23 19:40:58,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-23 19:40:59,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-23 19:40:59,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-23 19:40:59,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-23 19:40:59,022 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-23 19:40:59,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 19:40:59,024 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-08-23 19:41:33,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-23 19:41:33,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-08-23 19:41:33,109 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting instrPush1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [instrPush1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, instrPush1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, instrPush1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 13 more)] === [2024-08-23 19:41:33,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-23 19:41:33,110 INFO L85 PathProgramCache]: Analyzing trace with hash 953286078, now seen corresponding path program 1 times [2024-08-23 19:41:33,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-23 19:41:33,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152053496] [2024-08-23 19:41:33,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-23 19:41:33,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-23 19:41:33,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-23 19:41:33,288 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 19:41:33,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-23 19:41:33,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152053496] [2024-08-23 19:41:33,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152053496] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-23 19:41:33,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-23 19:41:33,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-23 19:41:33,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619352441] [2024-08-23 19:41:33,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-23 19:41:33,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-08-23 19:41:33,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-23 19:41:33,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-08-23 19:41:33,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-08-23 19:41:33,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-23 19:41:33,292 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-08-23 19:41:33,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 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 19:41:33,292 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-08-23 19:41:33,293 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. Killed by 15