./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_40-traces-ex-6_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_40-traces-ex-6_true.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 5ccb5cdd0373226e681809d7804324f4019c28126fdbac8b5748755015258b65 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 12:22:02,363 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 12:22:02,441 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 12:22:02,445 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 12:22:02,446 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 12:22:02,479 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 12:22:02,481 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 12:22:02,482 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 12:22:02,483 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 12:22:02,487 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 12:22:02,487 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 12:22:02,487 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 12:22:02,488 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 12:22:02,488 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 12:22:02,489 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 12:22:02,489 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 12:22:02,489 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 12:22:02,491 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 12:22:02,492 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 12:22:02,492 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 12:22:02,492 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 12:22:02,493 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 12:22:02,493 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 12:22:02,493 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 12:22:02,493 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 12:22:02,493 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 12:22:02,494 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 12:22:02,494 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 12:22:02,494 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 12:22:02,495 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 12:22:02,495 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 12:22:02,495 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 12:22:02,495 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:22:02,495 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 12:22:02,496 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 12:22:02,496 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 12:22:02,497 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 12:22:02,497 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 12:22:02,497 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 12:22:02,497 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 12:22:02,497 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 12:22:02,499 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 12:22:02,499 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ccb5cdd0373226e681809d7804324f4019c28126fdbac8b5748755015258b65 [2024-10-24 12:22:02,773 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 12:22:02,802 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 12:22:02,807 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 12:22:02,808 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 12:22:02,809 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 12:22:02,811 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_40-traces-ex-6_true.i [2024-10-24 12:22:04,455 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 12:22:04,728 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 12:22:04,730 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_40-traces-ex-6_true.i [2024-10-24 12:22:04,751 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a47a883e5/bea3cb21139a4f39b7949900af50214d/FLAG2164f5d32 [2024-10-24 12:22:04,770 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a47a883e5/bea3cb21139a4f39b7949900af50214d [2024-10-24 12:22:04,773 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 12:22:04,775 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 12:22:04,778 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 12:22:04,779 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 12:22:04,785 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 12:22:04,786 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:22:04" (1/1) ... [2024-10-24 12:22:04,789 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c7a977 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:22:04, skipping insertion in model container [2024-10-24 12:22:04,789 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:22:04" (1/1) ... [2024-10-24 12:22:04,844 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 12:22:05,127 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_40-traces-ex-6_true.i[1088,1101] [2024-10-24 12:22:05,292 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:22:05,307 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 12:22:05,320 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_40-traces-ex-6_true.i[1088,1101] [2024-10-24 12:22:05,359 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:22:05,409 INFO L204 MainTranslator]: Completed translation [2024-10-24 12:22:05,410 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:22:05 WrapperNode [2024-10-24 12:22:05,410 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 12:22:05,411 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 12:22:05,412 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 12:22:05,413 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 12:22:05,420 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:22:05" (1/1) ... [2024-10-24 12:22:05,434 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:22:05" (1/1) ... [2024-10-24 12:22:05,463 INFO L138 Inliner]: procedures = 162, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 47 [2024-10-24 12:22:05,463 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 12:22:05,466 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 12:22:05,466 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 12:22:05,466 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 12:22:05,476 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:22:05" (1/1) ... [2024-10-24 12:22:05,477 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:22:05" (1/1) ... [2024-10-24 12:22:05,479 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:22:05" (1/1) ... [2024-10-24 12:22:05,503 INFO L175 MemorySlicer]: Split 12 memory accesses to 3 slices as follows [2, 5, 5]. 42 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5]. The 0 writes are split as follows [0, 0, 0]. [2024-10-24 12:22:05,506 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:22:05" (1/1) ... [2024-10-24 12:22:05,506 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:22:05" (1/1) ... [2024-10-24 12:22:05,512 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:22:05" (1/1) ... [2024-10-24 12:22:05,517 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:22:05" (1/1) ... [2024-10-24 12:22:05,519 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:22:05" (1/1) ... [2024-10-24 12:22:05,520 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:22:05" (1/1) ... [2024-10-24 12:22:05,522 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 12:22:05,523 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 12:22:05,524 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 12:22:05,524 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 12:22:05,525 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:22:05" (1/1) ... [2024-10-24 12:22:05,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:22:05,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:22:05,574 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 12:22:05,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 12:22:05,630 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-24 12:22:05,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 12:22:05,631 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-24 12:22:05,631 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-24 12:22:05,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 12:22:05,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 12:22:05,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-24 12:22:05,633 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-24 12:22:05,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 12:22:05,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 12:22:05,635 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 12:22:05,776 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 12:22:05,777 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 12:22:05,973 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 12:22:05,974 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 12:22:06,103 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 12:22:06,106 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-24 12:22:06,106 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:22:06 BoogieIcfgContainer [2024-10-24 12:22:06,107 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 12:22:06,109 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 12:22:06,111 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 12:22:06,114 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 12:22:06,114 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:22:04" (1/3) ... [2024-10-24 12:22:06,115 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@514d366e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:22:06, skipping insertion in model container [2024-10-24 12:22:06,115 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:22:05" (2/3) ... [2024-10-24 12:22:06,115 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@514d366e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:22:06, skipping insertion in model container [2024-10-24 12:22:06,116 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:22:06" (3/3) ... [2024-10-24 12:22:06,117 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_40-traces-ex-6_true.i [2024-10-24 12:22:06,134 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 12:22:06,135 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 12:22:06,135 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 12:22:06,165 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 12:22:06,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 27 places, 24 transitions, 52 flow [2024-10-24 12:22:06,236 INFO L124 PetriNetUnfolderBase]: 1/23 cut-off events. [2024-10-24 12:22:06,240 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 12:22:06,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 23 events. 1/23 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 25 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. [2024-10-24 12:22:06,245 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 24 transitions, 52 flow [2024-10-24 12:22:06,247 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 20 transitions, 43 flow [2024-10-24 12:22:06,262 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 12:22:06,272 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;@49e4fd62, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 12:22:06,273 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-24 12:22:06,286 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 12:22:06,286 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2024-10-24 12:22:06,287 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 12:22:06,287 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:22:06,288 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:22:06,288 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:22:06,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:22:06,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1796723507, now seen corresponding path program 1 times [2024-10-24 12:22:06,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:22:06,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631622941] [2024-10-24 12:22:06,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:22:06,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:22:06,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:22:06,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:22:06,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:22:06,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631622941] [2024-10-24 12:22:06,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631622941] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:22:06,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:22:06,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 12:22:06,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258265635] [2024-10-24 12:22:06,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:22:06,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 12:22:06,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:22:06,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 12:22:06,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 12:22:06,873 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-10-24 12:22:06,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 43 flow. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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) [2024-10-24 12:22:06,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:22:06,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-10-24 12:22:06,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:22:07,018 INFO L124 PetriNetUnfolderBase]: 38/107 cut-off events. [2024-10-24 12:22:07,018 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 12:22:07,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 107 events. 38/107 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 348 event pairs, 22 based on Foata normal form. 8/114 useless extension candidates. Maximal degree in co-relation 200. Up to 60 conditions per place. [2024-10-24 12:22:07,023 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 17 selfloop transitions, 3 changer transitions 8/33 dead transitions. [2024-10-24 12:22:07,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 33 transitions, 125 flow [2024-10-24 12:22:07,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:22:07,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 12:22:07,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 60 transitions. [2024-10-24 12:22:07,038 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-24 12:22:07,041 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 43 flow. Second operand 5 states and 60 transitions. [2024-10-24 12:22:07,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 33 transitions, 125 flow [2024-10-24 12:22:07,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 33 transitions, 124 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 12:22:07,048 INFO L231 Difference]: Finished difference. Result has 30 places, 20 transitions, 57 flow [2024-10-24 12:22:07,050 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=57, PETRI_PLACES=30, PETRI_TRANSITIONS=20} [2024-10-24 12:22:07,055 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 6 predicate places. [2024-10-24 12:22:07,056 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 20 transitions, 57 flow [2024-10-24 12:22:07,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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) [2024-10-24 12:22:07,056 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:22:07,056 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:22:07,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 12:22:07,057 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:22:07,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:22:07,058 INFO L85 PathProgramCache]: Analyzing trace with hash 62930284, now seen corresponding path program 1 times [2024-10-24 12:22:07,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:22:07,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779930289] [2024-10-24 12:22:07,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:22:07,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:22:07,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:22:07,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:22:07,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:22:07,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779930289] [2024-10-24 12:22:07,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779930289] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:22:07,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:22:07,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 12:22:07,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515011498] [2024-10-24 12:22:07,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:22:07,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 12:22:07,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:22:07,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 12:22:07,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-24 12:22:07,389 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 24 [2024-10-24 12:22:07,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 57 flow. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2024-10-24 12:22:07,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:22:07,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 24 [2024-10-24 12:22:07,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:22:07,463 INFO L124 PetriNetUnfolderBase]: 12/62 cut-off events. [2024-10-24 12:22:07,463 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-24 12:22:07,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 62 events. 12/62 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 136 event pairs, 5 based on Foata normal form. 7/69 useless extension candidates. Maximal degree in co-relation 122. Up to 32 conditions per place. [2024-10-24 12:22:07,464 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 9 selfloop transitions, 5 changer transitions 2/22 dead transitions. [2024-10-24 12:22:07,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 22 transitions, 93 flow [2024-10-24 12:22:07,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 12:22:07,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 12:22:07,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 50 transitions. [2024-10-24 12:22:07,468 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-10-24 12:22:07,469 INFO L175 Difference]: Start difference. First operand has 30 places, 20 transitions, 57 flow. Second operand 4 states and 50 transitions. [2024-10-24 12:22:07,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 22 transitions, 93 flow [2024-10-24 12:22:07,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 22 transitions, 83 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-10-24 12:22:07,471 INFO L231 Difference]: Finished difference. Result has 27 places, 20 transitions, 57 flow [2024-10-24 12:22:07,472 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=47, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=57, PETRI_PLACES=27, PETRI_TRANSITIONS=20} [2024-10-24 12:22:07,473 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 3 predicate places. [2024-10-24 12:22:07,473 INFO L471 AbstractCegarLoop]: Abstraction has has 27 places, 20 transitions, 57 flow [2024-10-24 12:22:07,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2024-10-24 12:22:07,474 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:22:07,474 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:22:07,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 12:22:07,475 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:22:07,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:22:07,476 INFO L85 PathProgramCache]: Analyzing trace with hash 2122913388, now seen corresponding path program 2 times [2024-10-24 12:22:07,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:22:07,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841167870] [2024-10-24 12:22:07,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:22:07,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:22:07,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:22:07,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:22:07,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:22:07,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841167870] [2024-10-24 12:22:07,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841167870] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:22:07,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:22:07,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 12:22:07,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917504782] [2024-10-24 12:22:07,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:22:07,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:22:07,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:22:07,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:22:07,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:22:07,749 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 24 [2024-10-24 12:22:07,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 57 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2024-10-24 12:22:07,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:22:07,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 24 [2024-10-24 12:22:07,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:22:07,806 INFO L124 PetriNetUnfolderBase]: 10/45 cut-off events. [2024-10-24 12:22:07,807 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-24 12:22:07,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 45 events. 10/45 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 68 event pairs, 6 based on Foata normal form. 1/45 useless extension candidates. Maximal degree in co-relation 91. Up to 22 conditions per place. [2024-10-24 12:22:07,808 INFO L140 encePairwiseOnDemand]: 20/24 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2024-10-24 12:22:07,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 20 transitions, 89 flow [2024-10-24 12:22:07,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 12:22:07,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 12:22:07,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 49 transitions. [2024-10-24 12:22:07,810 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2024-10-24 12:22:07,810 INFO L175 Difference]: Start difference. First operand has 27 places, 20 transitions, 57 flow. Second operand 4 states and 49 transitions. [2024-10-24 12:22:07,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 20 transitions, 89 flow [2024-10-24 12:22:07,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 20 transitions, 80 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 12:22:07,811 INFO L231 Difference]: Finished difference. Result has 24 places, 0 transitions, 0 flow [2024-10-24 12:22:07,811 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=41, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=24, PETRI_TRANSITIONS=0} [2024-10-24 12:22:07,812 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 0 predicate places. [2024-10-24 12:22:07,812 INFO L471 AbstractCegarLoop]: Abstraction has has 24 places, 0 transitions, 0 flow [2024-10-24 12:22:07,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2024-10-24 12:22:07,817 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-10-24 12:22:07,817 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2024-10-24 12:22:07,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 12:22:07,818 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1] [2024-10-24 12:22:07,823 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-24 12:22:07,823 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-24 12:22:07,831 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 12:22:07 BasicIcfg [2024-10-24 12:22:07,831 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-24 12:22:07,832 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-24 12:22:07,832 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-24 12:22:07,832 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-24 12:22:07,832 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:22:06" (3/4) ... [2024-10-24 12:22:07,834 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-24 12:22:07,837 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-10-24 12:22:07,841 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 29 nodes and edges [2024-10-24 12:22:07,841 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-10-24 12:22:07,841 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-24 12:22:07,841 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-24 12:22:07,936 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-24 12:22:07,936 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-24 12:22:07,936 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-24 12:22:07,937 INFO L158 Benchmark]: Toolchain (without parser) took 3161.93ms. Allocated memory was 130.0MB in the beginning and 190.8MB in the end (delta: 60.8MB). Free memory was 58.3MB in the beginning and 69.6MB in the end (delta: -11.3MB). Peak memory consumption was 48.7MB. Max. memory is 16.1GB. [2024-10-24 12:22:07,937 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 130.0MB. Free memory is still 79.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 12:22:07,938 INFO L158 Benchmark]: CACSL2BoogieTranslator took 632.25ms. Allocated memory was 130.0MB in the beginning and 190.8MB in the end (delta: 60.8MB). Free memory was 58.0MB in the beginning and 151.6MB in the end (delta: -93.6MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. [2024-10-24 12:22:07,938 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.32ms. Allocated memory is still 190.8MB. Free memory was 151.6MB in the beginning and 149.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 12:22:07,938 INFO L158 Benchmark]: Boogie Preprocessor took 57.12ms. Allocated memory is still 190.8MB. Free memory was 149.5MB in the beginning and 147.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 12:22:07,939 INFO L158 Benchmark]: RCFGBuilder took 583.43ms. Allocated memory is still 190.8MB. Free memory was 147.4MB in the beginning and 122.3MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-10-24 12:22:07,939 INFO L158 Benchmark]: TraceAbstraction took 1722.18ms. Allocated memory is still 190.8MB. Free memory was 122.3MB in the beginning and 73.8MB in the end (delta: 48.5MB). Peak memory consumption was 46.4MB. Max. memory is 16.1GB. [2024-10-24 12:22:07,940 INFO L158 Benchmark]: Witness Printer took 104.73ms. Allocated memory is still 190.8MB. Free memory was 73.8MB in the beginning and 69.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-24 12:22:07,942 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 130.0MB. Free memory is still 79.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 632.25ms. Allocated memory was 130.0MB in the beginning and 190.8MB in the end (delta: 60.8MB). Free memory was 58.0MB in the beginning and 151.6MB in the end (delta: -93.6MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.32ms. Allocated memory is still 190.8MB. Free memory was 151.6MB in the beginning and 149.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.12ms. Allocated memory is still 190.8MB. Free memory was 149.5MB in the beginning and 147.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 583.43ms. Allocated memory is still 190.8MB. Free memory was 147.4MB in the beginning and 122.3MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 1722.18ms. Allocated memory is still 190.8MB. Free memory was 122.3MB in the beginning and 73.8MB in the end (delta: 48.5MB). Peak memory consumption was 46.4MB. Max. memory is 16.1GB. * Witness Printer took 104.73ms. Allocated memory is still 190.8MB. Free memory was 73.8MB in the beginning and 69.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 35 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.6s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 34 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 32 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 93 IncrementalHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 1 mSDtfsCounter, 93 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=1, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 255 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-24 12:22:07,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE