./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-complex/elimination_backoff_stack.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-09-02_08-21-23.files/protection-local/elimination_backoff_stack.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a4c57e3 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/GemCutterReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-complex/elimination_backoff_stack.i ./goblint.2024-09-02_08-21-23.files/protection-local/elimination_backoff_stack.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.positions.where.we.compute.the.hoare.annotation None --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.witness-ghost-4a4c57e-m [2024-09-08 08:14:54,866 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-08 08:14:54,935 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2024-09-08 08:14:54,940 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-08 08:14:54,941 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-08 08:14:54,963 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-08 08:14:54,964 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-08 08:14:54,965 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-08 08:14:54,965 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-08 08:14:54,967 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-08 08:14:54,967 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-08 08:14:54,967 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-08 08:14:54,967 INFO L153 SettingsManager]: * Use SBE=true [2024-09-08 08:14:54,968 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-08 08:14:54,968 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-08 08:14:54,968 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-08 08:14:54,968 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-08 08:14:54,968 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-08 08:14:54,969 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-08 08:14:54,969 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-08 08:14:54,969 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-08 08:14:54,972 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-08 08:14:54,972 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-08 08:14:54,972 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-08 08:14:54,972 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-08 08:14:54,973 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-08 08:14:54,973 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-08 08:14:54,973 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-08 08:14:54,973 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-08 08:14:54,973 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-08 08:14:54,973 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-09-08 08:14:54,974 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-08 08:14:54,974 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-08 08:14:54,974 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-08 08:14:54,974 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-08 08:14:54,974 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2024-09-08 08:14:54,974 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-08 08:14:54,975 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-08 08:14:54,975 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-09-08 08:14:54,975 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-09-08 08:14:54,975 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-09-08 08:14:54,976 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-09-08 08:14:55,172 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-08 08:14:55,190 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-08 08:14:55,194 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-08 08:14:55,194 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-08 08:14:55,195 INFO L274 PluginConnector]: CDTParser initialized [2024-09-08 08:14:55,196 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/pthread-complex/elimination_backoff_stack.i [2024-09-08 08:14:56,422 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-08 08:14:56,681 INFO L384 CDTParser]: Found 1 translation units. [2024-09-08 08:14:56,681 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-complex/elimination_backoff_stack.i [2024-09-08 08:14:56,706 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/eab42701c/d0f90fa496b44cd7b43581e2733e5822/FLAG764252f08 [2024-09-08 08:14:56,978 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/eab42701c/d0f90fa496b44cd7b43581e2733e5822 [2024-09-08 08:14:56,980 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-08 08:14:56,981 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-08 08:14:56,981 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/./goblint.2024-09-02_08-21-23.files/protection-local/elimination_backoff_stack.yml/witness.yml [2024-09-08 08:14:57,034 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-08 08:14:57,035 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-08 08:14:57,036 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-08 08:14:57,036 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-08 08:14:57,040 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-08 08:14:57,040 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 08:14:56" (1/2) ... [2024-09-08 08:14:57,041 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70e3abfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 08:14:57, skipping insertion in model container [2024-09-08 08:14:57,041 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 08:14:56" (1/2) ... [2024-09-08 08:14:57,042 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7f7d5338 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 08:14:57, skipping insertion in model container [2024-09-08 08:14:57,042 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 08.09 08:14:57" (2/2) ... [2024-09-08 08:14:57,043 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70e3abfe and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 08.09 08:14:57, skipping insertion in model container [2024-09-08 08:14:57,043 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 08.09 08:14:57" (2/2) ... [2024-09-08 08:14:57,089 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-08 08:14:57,090 INFO L1541 ArrayList]: Location invariant before [L1517-L1517] 0 <= unique_id [2024-09-08 08:14:57,090 INFO L1541 ArrayList]: Location invariant before [L1481-L1485] 0 <= unique_id [2024-09-08 08:14:57,090 INFO L1541 ArrayList]: Location invariant before [L1387-L1392] 0 <= unique_id [2024-09-08 08:14:57,090 INFO L1541 ArrayList]: Location invariant before [L1528-L1528] 0 <= unique_id [2024-09-08 08:14:57,091 INFO L1541 ArrayList]: Location invariant before [L1552-L1552] 0 <= unique_id [2024-09-08 08:14:57,091 INFO L1541 ArrayList]: Location invariant before [L1491-L1491] 0 <= unique_id [2024-09-08 08:14:57,091 INFO L1541 ArrayList]: Location invariant before [L1400-L1400] 0 <= unique_id [2024-09-08 08:14:57,091 INFO L1541 ArrayList]: Location invariant before [L1355-L1360] 0 <= unique_id [2024-09-08 08:14:57,091 INFO L1541 ArrayList]: Location invariant before [L1559-L1559] 0 <= unique_id [2024-09-08 08:14:57,091 INFO L1541 ArrayList]: Location invariant before [L1466-L1466] 0 <= unique_id [2024-09-08 08:14:57,091 INFO L1541 ArrayList]: Location invariant before [L1367-L1372] 0 <= unique_id [2024-09-08 08:14:57,091 INFO L1541 ArrayList]: Location invariant before [L1409-L1409] 0 <= unique_id [2024-09-08 08:14:57,092 INFO L1541 ArrayList]: Location invariant before [L1564-L1564] 0 <= unique_id [2024-09-08 08:14:57,092 INFO L1541 ArrayList]: Location invariant before [L1547-L1547] 0 <= unique_id [2024-09-08 08:14:57,131 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-08 08:14:57,599 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-08 08:14:57,617 INFO L200 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-09-08 08:14:57,744 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-08 08:14:57,817 INFO L204 MainTranslator]: Completed translation [2024-09-08 08:14:57,817 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 08.09 08:14:57 WrapperNode [2024-09-08 08:14:57,818 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-08 08:14:57,818 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-08 08:14:57,819 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-08 08:14:57,819 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-08 08:14:57,824 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 08.09 08:14:57" (1/1) ... [2024-09-08 08:14:57,842 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 08.09 08:14:57" (1/1) ... [2024-09-08 08:14:57,923 INFO L138 Inliner]: procedures = 396, calls = 191, calls flagged for inlining = 53, calls inlined = 218, statements flattened = 4004 [2024-09-08 08:14:57,924 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-08 08:14:57,924 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-08 08:14:57,924 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-08 08:14:57,925 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-08 08:14:57,932 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 08.09 08:14:57" (1/1) ... [2024-09-08 08:14:57,932 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 08.09 08:14:57" (1/1) ... [2024-09-08 08:14:57,960 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 08.09 08:14:57" (1/1) ... [2024-09-08 08:14:57,963 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 08.09 08:14:57" (1/1) ... [2024-09-08 08:14:58,016 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 08.09 08:14:57" (1/1) ... [2024-09-08 08:14:58,027 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 08.09 08:14:57" (1/1) ... [2024-09-08 08:14:58,036 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 08.09 08:14:57" (1/1) ... [2024-09-08 08:14:58,046 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 08.09 08:14:57" (1/1) ... [2024-09-08 08:14:58,070 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-08 08:14:58,071 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-08 08:14:58,072 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-08 08:14:58,072 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-08 08:14:58,073 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 08.09 08:14:57" (1/1) ... [2024-09-08 08:14:58,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-09-08 08:14:58,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 08:14:58,101 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-09-08 08:14:58,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-09-08 08:14:58,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-09-08 08:14:58,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-09-08 08:14:58,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-09-08 08:14:58,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-08 08:14:58,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-09-08 08:14:58,137 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush2 [2024-09-08 08:14:58,137 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush2 [2024-09-08 08:14:58,137 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush1 [2024-09-08 08:14:58,137 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush1 [2024-09-08 08:14:58,137 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush0 [2024-09-08 08:14:58,138 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush0 [2024-09-08 08:14:58,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-08 08:14:58,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-08 08:14:58,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-09-08 08:14:58,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-09-08 08:14:58,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-09-08 08:14:58,139 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop5 [2024-09-08 08:14:58,139 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop5 [2024-09-08 08:14:58,139 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop6 [2024-09-08 08:14:58,139 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop6 [2024-09-08 08:14:58,139 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop3 [2024-09-08 08:14:58,139 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop3 [2024-09-08 08:14:58,140 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop4 [2024-09-08 08:14:58,140 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop4 [2024-09-08 08:14:58,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-08 08:14:58,144 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-09-08 08:14:58,402 INFO L242 CfgBuilder]: Building ICFG [2024-09-08 08:14:58,403 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-08 08:15:01,169 INFO L287 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-09-08 08:15:01,170 INFO L291 CfgBuilder]: Performing block encoding [2024-09-08 08:15:03,436 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-08 08:15:03,436 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-08 08:15:03,436 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 08:15:03 BoogieIcfgContainer [2024-09-08 08:15:03,436 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-08 08:15:03,440 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-08 08:15:03,441 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-08 08:15:03,443 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-08 08:15:03,444 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 08:14:56" (1/4) ... [2024-09-08 08:15:03,444 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e57b87c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 08:15:03, skipping insertion in model container [2024-09-08 08:15:03,445 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 08.09 08:14:57" (2/4) ... [2024-09-08 08:15:03,445 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e57b87c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 08.09 08:15:03, skipping insertion in model container [2024-09-08 08:15:03,446 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 08.09 08:14:57" (3/4) ... [2024-09-08 08:15:03,446 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e57b87c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 08.09 08:15:03, skipping insertion in model container [2024-09-08 08:15:03,446 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 08:15:03" (4/4) ... [2024-09-08 08:15:03,447 INFO L112 eAbstractionObserver]: Analyzing ICFG elimination_backoff_stack.i [2024-09-08 08:15:03,462 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-08 08:15:03,463 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 116 error locations. [2024-09-08 08:15:03,463 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-09-08 08:15:03,956 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-09-08 08:15:04,006 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-08 08:15:04,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-09-08 08:15:04,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-08 08:15:04,008 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-09-08 08:15:04,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2024-09-08 08:15:04,037 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-09-08 08:15:04,047 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == instrPop6Thread1of1ForFork1 ======== [2024-09-08 08:15:04,052 INFO L336 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@695f52f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-08 08:15:04,053 INFO L337 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-09-08 08:15:20,366 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting instrPop6Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [instrPop6Err0ASSERT_VIOLATIONWITNESS_INVARIANT, instrPop6Err1ASSERT_VIOLATIONWITNESS_INVARIANT, instrPop6Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] === [2024-09-08 08:15:20,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 08:15:20,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1967708466, now seen corresponding path program 1 times [2024-09-08 08:15:20,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 08:15:20,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523628174] [2024-09-08 08:15:20,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 08:15:20,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 08:15:20,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 08:15:20,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 08:15:20,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 08:15:20,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523628174] [2024-09-08 08:15:20,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523628174] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-08 08:15:20,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-08 08:15:20,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-08 08:15:20,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571457857] [2024-09-08 08:15:20,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-08 08:15:20,844 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-08 08:15:20,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 08:15:20,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-08 08:15:20,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-08 08:15:20,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 08:15:20,867 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 08:15:20,868 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-08 08:15:20,868 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-09-08 08:15:46,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-08 08:15:46,357 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-08 08:15:46,357 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting instrPop6Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [instrPop6Err0ASSERT_VIOLATIONWITNESS_INVARIANT, instrPop6Err1ASSERT_VIOLATIONWITNESS_INVARIANT, instrPop6Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] === [2024-09-08 08:15:46,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-08 08:15:46,357 INFO L85 PathProgramCache]: Analyzing trace with hash 300574749, now seen corresponding path program 1 times [2024-09-08 08:15:46,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-08 08:15:46,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378551061] [2024-09-08 08:15:46,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-08 08:15:46,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-08 08:15:46,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-08 08:15:46,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-08 08:15:46,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-08 08:15:46,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378551061] [2024-09-08 08:15:46,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378551061] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-08 08:15:46,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-08 08:15:46,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-08 08:15:46,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464460867] [2024-09-08 08:15:46,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-08 08:15:46,508 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-08 08:15:46,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-08 08:15:46,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-08 08:15:46,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-08 08:15:46,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-08 08:15:46,510 INFO L474 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-09-08 08:15:46,510 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-08 08:15:46,510 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-09-08 08:15:46,510 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. Killed by 15