./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee65cc73-d9ae-4ec0-bd5f-2186257887b4/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee65cc73-d9ae-4ec0-bd5f-2186257887b4/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee65cc73-d9ae-4ec0-bd5f-2186257887b4/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee65cc73-d9ae-4ec0-bd5f-2186257887b4/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee65cc73-d9ae-4ec0-bd5f-2186257887b4/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee65cc73-d9ae-4ec0-bd5f-2186257887b4/bin/uautomizer-verify-qhAvR1uOyd --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0a77b23de3110741cf9e339cfb9f72e965f6bc6bc082cff0044fedc6c4916cfb --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:49:27,466 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:49:27,521 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee65cc73-d9ae-4ec0-bd5f-2186257887b4/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 14:49:27,526 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:49:27,526 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:49:27,547 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:49:27,550 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:49:27,551 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:49:27,551 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:49:27,551 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:49:27,551 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:49:27,551 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:49:27,552 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:49:27,552 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:49:27,552 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:49:27,552 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:49:27,552 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 14:49:27,552 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:49:27,552 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:49:27,552 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:49:27,553 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:49:27,553 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 14:49:27,553 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:49:27,553 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 14:49:27,553 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:49:27,553 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:49:27,553 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 14:49:27,553 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:49:27,553 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:49:27,553 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:49:27,554 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:49:27,554 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:49:27,554 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:49:27,556 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:49:27,557 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:49:27,557 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 14:49:27,558 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:49:27,558 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 14:49:27,558 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:49:27,558 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:49:27,558 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:49:27,558 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:49:27,558 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee65cc73-d9ae-4ec0-bd5f-2186257887b4/bin/uautomizer-verify-qhAvR1uOyd Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a77b23de3110741cf9e339cfb9f72e965f6bc6bc082cff0044fedc6c4916cfb [2024-11-13 14:49:27,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:49:27,829 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:49:27,831 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:49:27,833 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:49:27,833 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:49:27,834 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee65cc73-d9ae-4ec0-bd5f-2186257887b4/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i Unable to find full path for "g++" [2024-11-13 14:49:29,808 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:49:30,240 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:49:30,241 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee65cc73-d9ae-4ec0-bd5f-2186257887b4/sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i [2024-11-13 14:49:30,268 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee65cc73-d9ae-4ec0-bd5f-2186257887b4/bin/uautomizer-verify-qhAvR1uOyd/data/dc6d56d9d/5adc5f5f76934dc4bd1cb0f5e2a11998/FLAG812fc1014 [2024-11-13 14:49:30,283 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee65cc73-d9ae-4ec0-bd5f-2186257887b4/bin/uautomizer-verify-qhAvR1uOyd/data/dc6d56d9d/5adc5f5f76934dc4bd1cb0f5e2a11998 [2024-11-13 14:49:30,285 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:49:30,287 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:49:30,288 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:49:30,288 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:49:30,293 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:49:30,294 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:49:30" (1/1) ... [2024-11-13 14:49:30,295 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@657326a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:49:30, skipping insertion in model container [2024-11-13 14:49:30,295 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:49:30" (1/1) ... [2024-11-13 14:49:30,337 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:49:31,061 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee65cc73-d9ae-4ec0-bd5f-2186257887b4/sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i[63614,63627] [2024-11-13 14:49:31,105 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:49:31,123 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:49:31,202 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee65cc73-d9ae-4ec0-bd5f-2186257887b4/sv-benchmarks/c/pthread-complex/elimination_backoff_stack.i[63614,63627] [2024-11-13 14:49:31,211 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:49:31,308 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:49:31,308 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:49:31 WrapperNode [2024-11-13 14:49:31,309 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:49:31,310 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:49:31,310 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:49:31,310 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:49:31,317 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:49:31" (1/1) ... [2024-11-13 14:49:31,338 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:49:31" (1/1) ... [2024-11-13 14:49:31,503 INFO L138 Inliner]: procedures = 396, calls = 206, calls flagged for inlining = 52, calls inlined = 211, statements flattened = 3772 [2024-11-13 14:49:31,503 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:49:31,504 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:49:31,504 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:49:31,504 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:49:31,515 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:49:31" (1/1) ... [2024-11-13 14:49:31,515 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:49:31" (1/1) ... [2024-11-13 14:49:31,561 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:49:31" (1/1) ... [2024-11-13 14:49:31,896 INFO L175 MemorySlicer]: Split 700 memory accesses to 9 slices as follows [2, 86, 36, 28, 366, 22, 25, 22, 113]. 52 percent of accesses are in the largest equivalence class. The 39 initializations are split as follows [2, 1, 4, 2, 16, 2, 3, 1, 8]. The 287 writes are split as follows [0, 29, 25, 6, 157, 3, 4, 7, 56]. [2024-11-13 14:49:31,899 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:49:31" (1/1) ... [2024-11-13 14:49:31,899 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:49:31" (1/1) ... [2024-11-13 14:49:32,024 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:49:31" (1/1) ... [2024-11-13 14:49:32,046 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:49:31" (1/1) ... [2024-11-13 14:49:32,066 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:49:31" (1/1) ... [2024-11-13 14:49:32,083 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:49:31" (1/1) ... [2024-11-13 14:49:32,114 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:49:32,115 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:49:32,116 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:49:32,116 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:49:32,117 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:49:31" (1/1) ... [2024-11-13 14:49:32,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:49:32,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee65cc73-d9ae-4ec0-bd5f-2186257887b4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:49:32,157 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee65cc73-d9ae-4ec0-bd5f-2186257887b4/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:49:32,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee65cc73-d9ae-4ec0-bd5f-2186257887b4/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:49:32,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-13 14:49:32,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-13 14:49:32,187 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 14:49:32,187 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 14:49:32,187 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-13 14:49:32,187 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-13 14:49:32,187 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-13 14:49:32,187 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-13 14:49:32,187 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-13 14:49:32,187 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-13 14:49:32,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-13 14:49:32,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:49:32,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-13 14:49:32,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-13 14:49:32,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-13 14:49:32,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-13 14:49:32,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-13 14:49:32,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-13 14:49:32,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-13 14:49:32,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-13 14:49:32,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-11-13 14:49:32,188 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush2 [2024-11-13 14:49:32,188 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush2 [2024-11-13 14:49:32,189 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush1 [2024-11-13 14:49:32,189 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush1 [2024-11-13 14:49:32,189 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush0 [2024-11-13 14:49:32,189 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush0 [2024-11-13 14:49:32,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:49:32,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:49:32,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-13 14:49:32,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-13 14:49:32,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-13 14:49:32,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-13 14:49:32,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-13 14:49:32,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-13 14:49:32,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-13 14:49:32,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-13 14:49:32,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-11-13 14:49:32,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-13 14:49:32,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-13 14:49:32,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-13 14:49:32,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-13 14:49:32,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-13 14:49:32,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-13 14:49:32,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-13 14:49:32,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-11-13 14:49:32,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2024-11-13 14:49:32,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 14:49:32,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 14:49:32,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-13 14:49:32,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-13 14:49:32,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-13 14:49:32,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-13 14:49:32,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-13 14:49:32,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-13 14:49:32,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-13 14:49:32,193 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop5 [2024-11-13 14:49:32,193 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop5 [2024-11-13 14:49:32,193 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop6 [2024-11-13 14:49:32,193 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop6 [2024-11-13 14:49:32,193 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop3 [2024-11-13 14:49:32,194 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop3 [2024-11-13 14:49:32,194 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop4 [2024-11-13 14:49:32,194 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop4 [2024-11-13 14:49:32,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 14:49:32,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 14:49:32,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-13 14:49:32,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-13 14:49:32,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-13 14:49:32,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-13 14:49:32,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-13 14:49:32,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-13 14:49:32,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-13 14:49:32,199 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 14:49:32,658 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:49:32,660 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:49:37,150 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 14:49:37,150 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:49:40,987 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:49:40,987 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-13 14:49:40,987 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:49:40 BoogieIcfgContainer [2024-11-13 14:49:40,988 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:49:40,993 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:49:40,994 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:49:40,999 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:49:40,999 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:49:30" (1/3) ... [2024-11-13 14:49:41,000 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f4c89d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:49:41, skipping insertion in model container [2024-11-13 14:49:41,000 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:49:31" (2/3) ... [2024-11-13 14:49:41,000 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f4c89d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:49:41, skipping insertion in model container [2024-11-13 14:49:41,000 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:49:40" (3/3) ... [2024-11-13 14:49:41,003 INFO L112 eAbstractionObserver]: Analyzing ICFG elimination_backoff_stack.i [2024-11-13 14:49:41,020 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:49:41,021 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG elimination_backoff_stack.i that has 8 procedures, 409 locations, 1 initial locations, 0 loop locations, and 7 error locations. [2024-11-13 14:49:41,022 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 14:49:41,792 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 14:49:41,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 430 places, 506 transitions, 1040 flow [2024-11-13 14:49:42,288 INFO L124 PetriNetUnfolderBase]: 98/499 cut-off events. [2024-11-13 14:49:42,291 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 14:49:42,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 521 conditions, 499 events. 98/499 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2708 event pairs, 0 based on Foata normal form. 0/394 useless extension candidates. Maximal degree in co-relation 509. Up to 5 conditions per place. [2024-11-13 14:49:42,315 INFO L82 GeneralOperation]: Start removeDead. Operand has 430 places, 506 transitions, 1040 flow [2024-11-13 14:49:42,332 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 423 places, 499 transitions, 1019 flow [2024-11-13 14:49:42,344 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:49:42,363 INFO L333 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=PETRI_NET, 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;@176438a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:49:42,364 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-11-13 14:49:42,398 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 14:49:42,398 INFO L124 PetriNetUnfolderBase]: 5/76 cut-off events. [2024-11-13 14:49:42,398 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 14:49:42,399 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:49:42,399 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:49:42,400 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting instrPush0Err0ASSERT_VIOLATIONERROR_FUNCTION === [instrPop3Err0ASSERT_VIOLATIONERROR_FUNCTION, instrPop4Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 18 more)] === [2024-11-13 14:49:42,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:49:42,404 INFO L85 PathProgramCache]: Analyzing trace with hash -609147858, now seen corresponding path program 1 times [2024-11-13 14:49:42,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:49:42,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309098939] [2024-11-13 14:49:42,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:49:42,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:49:42,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:49:42,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:49:42,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:49:42,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309098939] [2024-11-13 14:49:42,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309098939] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:49:42,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:49:42,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:49:42,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920510812] [2024-11-13 14:49:42,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:49:42,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:49:42,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:49:43,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:49:43,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:49:43,034 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 506 [2024-11-13 14:49:43,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 499 transitions, 1019 flow. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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) [2024-11-13 14:49:43,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:49:43,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 506 [2024-11-13 14:49:43,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand