./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-complex/elimination_backoff_stack.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c4f91361 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-complex/elimination_backoff_stack.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 0.2.3-dev-c4f9136-m [2023-11-23 14:34:46,173 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 14:34:46,214 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-23 14:34:46,217 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 14:34:46,217 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 14:34:46,238 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 14:34:46,238 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 14:34:46,239 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 14:34:46,239 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 14:34:46,242 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 14:34:46,242 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 14:34:46,243 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 14:34:46,243 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 14:34:46,244 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 14:34:46,244 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 14:34:46,245 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 14:34:46,245 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 14:34:46,245 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 14:34:46,245 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 14:34:46,245 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 14:34:46,246 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 14:34:46,246 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 14:34:46,246 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 14:34:46,246 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 14:34:46,247 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 14:34:46,247 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 14:34:46,247 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 14:34:46,248 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 14:34:46,248 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 14:34:46,248 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 14:34:46,249 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 14:34:46,249 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 14:34:46,249 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 14:34:46,249 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 14:34:46,249 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 14:34:46,250 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 14:34:46,250 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 14:34:46,250 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 14:34:46,250 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 14:34:46,250 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 14:34:46,250 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 14:34:46,251 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 14:34:46,251 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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/UAutomizer-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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a77b23de3110741cf9e339cfb9f72e965f6bc6bc082cff0044fedc6c4916cfb [2023-11-23 14:34:46,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 14:34:46,468 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 14:34:46,470 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 14:34:46,471 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 14:34:46,471 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 14:34:46,472 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-complex/elimination_backoff_stack.i [2023-11-23 14:34:47,517 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 14:34:47,767 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 14:34:47,768 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-complex/elimination_backoff_stack.i [2023-11-23 14:34:47,791 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb93987c0/18a64247089046d990877787d56d92c6/FLAG5b80f7291 [2023-11-23 14:34:47,809 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb93987c0/18a64247089046d990877787d56d92c6 [2023-11-23 14:34:47,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 14:34:47,812 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 14:34:47,816 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 14:34:47,816 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 14:34:47,821 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 14:34:47,823 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:34:47" (1/1) ... [2023-11-23 14:34:47,824 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39a8c824 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:47, skipping insertion in model container [2023-11-23 14:34:47,824 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:34:47" (1/1) ... [2023-11-23 14:34:47,865 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 14:34:48,340 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-complex/elimination_backoff_stack.i[63614,63627] [2023-11-23 14:34:48,353 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 14:34:48,373 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 14:34:48,428 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-complex/elimination_backoff_stack.i[63614,63627] [2023-11-23 14:34:48,440 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 14:34:48,502 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 14:34:48,503 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 14:34:48,508 INFO L206 MainTranslator]: Completed translation [2023-11-23 14:34:48,509 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:48 WrapperNode [2023-11-23 14:34:48,509 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 14:34:48,510 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 14:34:48,510 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 14:34:48,510 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 14:34:48,516 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:48" (1/1) ... [2023-11-23 14:34:48,544 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:48" (1/1) ... [2023-11-23 14:34:48,630 INFO L138 Inliner]: procedures = 397, calls = 218, calls flagged for inlining = 52, calls inlined = 211, statements flattened = 3786 [2023-11-23 14:34:48,630 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 14:34:48,631 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 14:34:48,631 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 14:34:48,631 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 14:34:48,639 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:48" (1/1) ... [2023-11-23 14:34:48,640 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:48" (1/1) ... [2023-11-23 14:34:48,664 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:48" (1/1) ... [2023-11-23 14:34:48,840 INFO L175 MemorySlicer]: Split 693 memory accesses to 16 slices as follows [2, 22, 1, 36, 28, 22, 25, 1, 113, 1, 1, 1, 352, 86, 1, 1]. 51 percent of accesses are in the largest equivalence class. The 23 initializations are split as follows [2, 1, 0, 4, 2, 2, 3, 0, 8, 0, 0, 0, 0, 1, 0, 0]. The 296 writes are split as follows [0, 7, 1, 25, 6, 3, 4, 1, 56, 1, 1, 1, 159, 29, 1, 1]. [2023-11-23 14:34:48,841 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:48" (1/1) ... [2023-11-23 14:34:48,842 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:48" (1/1) ... [2023-11-23 14:34:48,893 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:48" (1/1) ... [2023-11-23 14:34:48,908 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:48" (1/1) ... [2023-11-23 14:34:48,921 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:48" (1/1) ... [2023-11-23 14:34:48,936 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:48" (1/1) ... [2023-11-23 14:34:48,954 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 14:34:48,954 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 14:34:48,955 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 14:34:48,955 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 14:34:48,957 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:48" (1/1) ... [2023-11-23 14:34:48,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 14:34:48,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 14:34:48,984 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 14:34:48,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 14:34:49,024 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-23 14:34:49,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 14:34:49,024 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-23 14:34:49,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 14:34:49,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 14:34:49,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 14:34:49,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 14:34:49,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-23 14:34:49,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-23 14:34:49,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-23 14:34:49,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-23 14:34:49,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-11-23 14:34:49,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2023-11-23 14:34:49,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2023-11-23 14:34:49,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2023-11-23 14:34:49,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2023-11-23 14:34:49,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2023-11-23 14:34:49,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2023-11-23 14:34:49,028 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2023-11-23 14:34:49,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 14:34:49,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-23 14:34:49,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-23 14:34:49,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-23 14:34:49,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-23 14:34:49,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-23 14:34:49,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-23 14:34:49,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-23 14:34:49,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2023-11-23 14:34:49,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2023-11-23 14:34:49,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2023-11-23 14:34:49,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#10 [2023-11-23 14:34:49,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#11 [2023-11-23 14:34:49,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#12 [2023-11-23 14:34:49,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#13 [2023-11-23 14:34:49,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#14 [2023-11-23 14:34:49,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#15 [2023-11-23 14:34:49,031 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush2 [2023-11-23 14:34:49,031 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush2 [2023-11-23 14:34:49,031 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush1 [2023-11-23 14:34:49,032 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush1 [2023-11-23 14:34:49,032 INFO L130 BoogieDeclarations]: Found specification of procedure instrPush0 [2023-11-23 14:34:49,032 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPush0 [2023-11-23 14:34:49,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 14:34:49,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 14:34:49,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 14:34:49,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-23 14:34:49,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-23 14:34:49,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-23 14:34:49,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-23 14:34:49,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-23 14:34:49,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-23 14:34:49,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-23 14:34:49,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2023-11-23 14:34:49,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2023-11-23 14:34:49,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2023-11-23 14:34:49,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2023-11-23 14:34:49,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#11 [2023-11-23 14:34:49,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#12 [2023-11-23 14:34:49,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#13 [2023-11-23 14:34:49,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#14 [2023-11-23 14:34:49,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#15 [2023-11-23 14:34:49,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-23 14:34:49,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-23 14:34:49,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-23 14:34:49,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-23 14:34:49,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-23 14:34:49,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-23 14:34:49,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-23 14:34:49,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2023-11-23 14:34:49,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2023-11-23 14:34:49,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2023-11-23 14:34:49,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#10 [2023-11-23 14:34:49,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#11 [2023-11-23 14:34:49,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#12 [2023-11-23 14:34:49,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#13 [2023-11-23 14:34:49,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#14 [2023-11-23 14:34:49,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#15 [2023-11-23 14:34:49,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 14:34:49,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 14:34:49,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 14:34:49,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 14:34:49,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 14:34:49,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-23 14:34:49,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-23 14:34:49,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-23 14:34:49,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-11-23 14:34:49,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2023-11-23 14:34:49,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2023-11-23 14:34:49,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2023-11-23 14:34:49,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2023-11-23 14:34:49,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2023-11-23 14:34:49,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2023-11-23 14:34:49,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2023-11-23 14:34:49,039 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop5 [2023-11-23 14:34:49,040 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop5 [2023-11-23 14:34:49,040 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop6 [2023-11-23 14:34:49,040 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop6 [2023-11-23 14:34:49,040 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop3 [2023-11-23 14:34:49,040 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop3 [2023-11-23 14:34:49,040 INFO L130 BoogieDeclarations]: Found specification of procedure instrPop4 [2023-11-23 14:34:49,040 INFO L138 BoogieDeclarations]: Found implementation of procedure instrPop4 [2023-11-23 14:34:49,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 14:34:49,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 14:34:49,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 14:34:49,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 14:34:49,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 14:34:49,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-23 14:34:49,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-23 14:34:49,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-23 14:34:49,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-23 14:34:49,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-23 14:34:49,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-23 14:34:49,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-23 14:34:49,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-11-23 14:34:49,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-11-23 14:34:49,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-11-23 14:34:49,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-11-23 14:34:49,046 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 14:34:49,477 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 14:34:49,479 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 14:34:51,897 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 14:34:54,201 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 14:34:54,202 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 14:34:54,203 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:34:54 BoogieIcfgContainer [2023-11-23 14:34:54,203 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 14:34:54,204 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 14:34:54,205 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 14:34:54,208 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 14:34:54,208 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:34:47" (1/3) ... [2023-11-23 14:34:54,209 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10a7592c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:34:54, skipping insertion in model container [2023-11-23 14:34:54,209 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:48" (2/3) ... [2023-11-23 14:34:54,210 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10a7592c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:34:54, skipping insertion in model container [2023-11-23 14:34:54,210 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:34:54" (3/3) ... [2023-11-23 14:34:54,212 INFO L112 eAbstractionObserver]: Analyzing ICFG elimination_backoff_stack.i [2023-11-23 14:34:54,221 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-23 14:34:54,229 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 14:34:54,230 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-11-23 14:34:54,230 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 14:34:54,828 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-23 14:34:54,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 430 places, 506 transitions, 1040 flow [2023-11-23 14:34:55,038 INFO L124 PetriNetUnfolderBase]: 98/499 cut-off events. [2023-11-23 14:34:55,038 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 14:34:55,055 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 23. Compared 2703 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. [2023-11-23 14:34:55,055 INFO L82 GeneralOperation]: Start removeDead. Operand has 430 places, 506 transitions, 1040 flow [2023-11-23 14:34:55,069 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 423 places, 499 transitions, 1019 flow [2023-11-23 14:34:55,075 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 14:34:55,081 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=true, 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;@64d0f61f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 14:34:55,081 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-11-23 14:34:55,094 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 14:34:55,094 INFO L124 PetriNetUnfolderBase]: 5/76 cut-off events. [2023-11-23 14:34:55,094 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 14:34:55,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 14:34:55,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 14:34:55,096 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting instrPush0Err0ASSERT_VIOLATIONERROR_FUNCTION === [instrPop3Err0ASSERT_VIOLATIONERROR_FUNCTION, instrPop4Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 18 more)] === [2023-11-23 14:34:55,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 14:34:55,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1056887020, now seen corresponding path program 1 times [2023-11-23 14:34:55,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 14:34:55,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933733589] [2023-11-23 14:34:55,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:34:55,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 14:34:55,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:34:55,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 14:34:55,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 14:34:55,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933733589] [2023-11-23 14:34:55,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933733589] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 14:34:55,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 14:34:55,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 14:34:55,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692419678] [2023-11-23 14:34:55,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 14:34:55,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 14:34:55,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 14:34:55,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 14:34:55,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 14:34:55,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 506 [2023-11-23 14:34:55,864 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) [2023-11-23 14:34:55,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 14:34:55,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 506 [2023-11-23 14:34:55,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand