./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_35-traces-ex-2_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d 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_35-traces-ex-2_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 1d0c43dd41f99fbfade8285f6054d50d854da6853e7f72e8b1866aad54c9c5c4 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 07:01:35,378 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 07:01:35,443 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-13 07:01:35,449 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 07:01:35,450 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 07:01:35,467 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 07:01:35,467 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 07:01:35,468 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 07:01:35,468 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 07:01:35,468 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 07:01:35,469 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 07:01:35,469 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 07:01:35,469 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 07:01:35,470 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 07:01:35,470 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 07:01:35,470 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 07:01:35,470 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 07:01:35,471 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 07:01:35,471 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 07:01:35,471 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 07:01:35,471 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 07:01:35,472 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 07:01:35,472 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 07:01:35,472 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 07:01:35,473 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 07:01:35,473 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 07:01:35,473 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 07:01:35,473 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 07:01:35,477 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 07:01:35,477 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 07:01:35,477 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 07:01:35,477 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 07:01:35,478 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 07:01:35,478 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 07:01:35,478 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 07:01:35,478 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 07:01:35,478 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 07:01:35,478 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 07:01:35,479 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 07:01:35,479 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 07:01:35,479 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 07:01:35,481 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 07:01:35,481 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d0c43dd41f99fbfade8285f6054d50d854da6853e7f72e8b1866aad54c9c5c4 [2024-10-13 07:01:35,702 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 07:01:35,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 07:01:35,728 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 07:01:35,729 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 07:01:35,729 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 07:01:35,730 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_35-traces-ex-2_true.i [2024-10-13 07:01:37,013 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 07:01:37,205 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 07:01:37,206 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_35-traces-ex-2_true.i [2024-10-13 07:01:37,218 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b93af478b/a0900d50a39f407db2e794496529de62/FLAG5df9731f6 [2024-10-13 07:01:37,230 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b93af478b/a0900d50a39f407db2e794496529de62 [2024-10-13 07:01:37,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 07:01:37,235 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 07:01:37,236 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 07:01:37,236 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 07:01:37,240 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 07:01:37,241 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:01:37" (1/1) ... [2024-10-13 07:01:37,243 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ba611f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:37, skipping insertion in model container [2024-10-13 07:01:37,243 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:01:37" (1/1) ... [2024-10-13 07:01:37,282 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 07:01:37,474 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_35-traces-ex-2_true.i[1088,1101] [2024-10-13 07:01:37,592 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 07:01:37,603 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 07:01:37,615 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_35-traces-ex-2_true.i[1088,1101] [2024-10-13 07:01:37,646 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 07:01:37,679 INFO L204 MainTranslator]: Completed translation [2024-10-13 07:01:37,680 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:37 WrapperNode [2024-10-13 07:01:37,680 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 07:01:37,681 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 07:01:37,681 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 07:01:37,681 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 07:01:37,686 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:37" (1/1) ... [2024-10-13 07:01:37,697 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:37" (1/1) ... [2024-10-13 07:01:37,714 INFO L138 Inliner]: procedures = 162, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 50 [2024-10-13 07:01:37,715 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 07:01:37,715 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 07:01:37,716 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 07:01:37,716 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 07:01:37,723 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:37" (1/1) ... [2024-10-13 07:01:37,724 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:37" (1/1) ... [2024-10-13 07:01:37,727 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:37" (1/1) ... [2024-10-13 07:01:37,737 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]. [2024-10-13 07:01:37,737 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:37" (1/1) ... [2024-10-13 07:01:37,737 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:37" (1/1) ... [2024-10-13 07:01:37,742 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:37" (1/1) ... [2024-10-13 07:01:37,743 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:37" (1/1) ... [2024-10-13 07:01:37,744 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:37" (1/1) ... [2024-10-13 07:01:37,745 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:37" (1/1) ... [2024-10-13 07:01:37,750 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 07:01:37,751 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 07:01:37,751 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 07:01:37,752 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 07:01:37,756 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:37" (1/1) ... [2024-10-13 07:01:37,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 07:01:37,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:01:37,784 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) [2024-10-13 07:01:37,787 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 [2024-10-13 07:01:37,825 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-13 07:01:37,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 07:01:37,825 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-13 07:01:37,825 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-13 07:01:37,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 07:01:37,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 07:01:37,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-13 07:01:37,826 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-13 07:01:37,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 07:01:37,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 07:01:37,827 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 07:01:37,916 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 07:01:37,917 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 07:01:38,028 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 07:01:38,029 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 07:01:38,103 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 07:01:38,103 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-13 07:01:38,103 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:01:38 BoogieIcfgContainer [2024-10-13 07:01:38,103 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 07:01:38,105 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 07:01:38,105 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 07:01:38,108 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 07:01:38,108 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:01:37" (1/3) ... [2024-10-13 07:01:38,110 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17ca9b69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:01:38, skipping insertion in model container [2024-10-13 07:01:38,110 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:37" (2/3) ... [2024-10-13 07:01:38,110 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17ca9b69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:01:38, skipping insertion in model container [2024-10-13 07:01:38,110 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:01:38" (3/3) ... [2024-10-13 07:01:38,111 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_35-traces-ex-2_true.i [2024-10-13 07:01:38,124 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 07:01:38,125 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-13 07:01:38,125 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 07:01:38,152 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 07:01:38,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 30 transitions, 64 flow [2024-10-13 07:01:38,198 INFO L124 PetriNetUnfolderBase]: 1/29 cut-off events. [2024-10-13 07:01:38,199 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 07:01:38,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 29 events. 1/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 29 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-10-13 07:01:38,201 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 30 transitions, 64 flow [2024-10-13 07:01:38,205 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 22 transitions, 47 flow [2024-10-13 07:01:38,213 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 07:01:38,218 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;@49888748, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 07:01:38,219 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-13 07:01:38,224 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 07:01:38,224 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2024-10-13 07:01:38,224 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 07:01:38,224 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:01:38,225 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:01:38,225 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:01:38,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:01:38,229 INFO L85 PathProgramCache]: Analyzing trace with hash -313664109, now seen corresponding path program 1 times [2024-10-13 07:01:38,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:01:38,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19107302] [2024-10-13 07:01:38,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:01:38,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:01:38,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:01:38,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:01:38,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:01:38,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19107302] [2024-10-13 07:01:38,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19107302] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:01:38,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:01:38,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 07:01:38,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600352887] [2024-10-13 07:01:38,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:01:38,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 07:01:38,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:01:38,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 07:01:38,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 07:01:38,585 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-10-13 07:01:38,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 47 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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) [2024-10-13 07:01:38,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:01:38,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-10-13 07:01:38,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:01:38,696 INFO L124 PetriNetUnfolderBase]: 41/125 cut-off events. [2024-10-13 07:01:38,697 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 07:01:38,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 125 events. 41/125 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 425 event pairs, 22 based on Foata normal form. 10/133 useless extension candidates. Maximal degree in co-relation 227. Up to 59 conditions per place. [2024-10-13 07:01:38,701 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 17 selfloop transitions, 3 changer transitions 10/36 dead transitions. [2024-10-13 07:01:38,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 36 transitions, 135 flow [2024-10-13 07:01:38,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:01:38,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:01:38,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 72 transitions. [2024-10-13 07:01:38,714 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48 [2024-10-13 07:01:38,716 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 47 flow. Second operand 5 states and 72 transitions. [2024-10-13 07:01:38,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 36 transitions, 135 flow [2024-10-13 07:01:38,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 36 transitions, 134 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 07:01:38,721 INFO L231 Difference]: Finished difference. Result has 32 places, 22 transitions, 61 flow [2024-10-13 07:01:38,722 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=61, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2024-10-13 07:01:38,725 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 6 predicate places. [2024-10-13 07:01:38,745 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 61 flow [2024-10-13 07:01:38,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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) [2024-10-13 07:01:38,746 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:01:38,746 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:01:38,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 07:01:38,746 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:01:38,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:01:38,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1593947482, now seen corresponding path program 1 times [2024-10-13 07:01:38,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:01:38,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965657975] [2024-10-13 07:01:38,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:01:38,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:01:38,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:01:38,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:01:38,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:01:38,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965657975] [2024-10-13 07:01:38,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965657975] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:01:38,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:01:38,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 07:01:38,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549527094] [2024-10-13 07:01:38,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:01:38,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 07:01:38,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:01:38,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 07:01:38,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 07:01:38,933 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-10-13 07:01:38,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 61 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) [2024-10-13 07:01:38,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:01:38,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-10-13 07:01:38,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:01:39,001 INFO L124 PetriNetUnfolderBase]: 15/66 cut-off events. [2024-10-13 07:01:39,001 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-13 07:01:39,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 66 events. 15/66 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 150 event pairs, 4 based on Foata normal form. 10/73 useless extension candidates. Maximal degree in co-relation 127. Up to 21 conditions per place. [2024-10-13 07:01:39,002 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 9 selfloop transitions, 5 changer transitions 12/31 dead transitions. [2024-10-13 07:01:39,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 31 transitions, 129 flow [2024-10-13 07:01:39,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:01:39,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:01:39,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 69 transitions. [2024-10-13 07:01:39,004 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46 [2024-10-13 07:01:39,004 INFO L175 Difference]: Start difference. First operand has 32 places, 22 transitions, 61 flow. Second operand 5 states and 69 transitions. [2024-10-13 07:01:39,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 31 transitions, 129 flow [2024-10-13 07:01:39,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 31 transitions, 119 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-10-13 07:01:39,005 INFO L231 Difference]: Finished difference. Result has 30 places, 16 transitions, 48 flow [2024-10-13 07:01:39,006 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=48, PETRI_PLACES=30, PETRI_TRANSITIONS=16} [2024-10-13 07:01:39,006 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 4 predicate places. [2024-10-13 07:01:39,006 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 16 transitions, 48 flow [2024-10-13 07:01:39,007 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) [2024-10-13 07:01:39,007 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:01:39,007 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:01:39,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 07:01:39,007 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:01:39,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:01:39,008 INFO L85 PathProgramCache]: Analyzing trace with hash 135466600, now seen corresponding path program 1 times [2024-10-13 07:01:39,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:01:39,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448355851] [2024-10-13 07:01:39,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:01:39,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:01:39,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:01:39,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:01:39,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:01:39,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448355851] [2024-10-13 07:01:39,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448355851] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:01:39,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:01:39,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-13 07:01:39,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773243504] [2024-10-13 07:01:39,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:01:39,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 07:01:39,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:01:39,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 07:01:39,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-13 07:01:39,218 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-10-13 07:01:39,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 16 transitions, 48 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 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) [2024-10-13 07:01:39,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:01:39,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-10-13 07:01:39,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:01:39,284 INFO L124 PetriNetUnfolderBase]: 4/22 cut-off events. [2024-10-13 07:01:39,284 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 07:01:39,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 22 events. 4/22 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 1/22 useless extension candidates. Maximal degree in co-relation 43. Up to 7 conditions per place. [2024-10-13 07:01:39,285 INFO L140 encePairwiseOnDemand]: 26/30 looper letters, 0 selfloop transitions, 0 changer transitions 14/14 dead transitions. [2024-10-13 07:01:39,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 14 transitions, 62 flow [2024-10-13 07:01:39,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:01:39,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:01:39,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 51 transitions. [2024-10-13 07:01:39,286 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34 [2024-10-13 07:01:39,286 INFO L175 Difference]: Start difference. First operand has 30 places, 16 transitions, 48 flow. Second operand 5 states and 51 transitions. [2024-10-13 07:01:39,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 14 transitions, 62 flow [2024-10-13 07:01:39,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 14 transitions, 53 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-13 07:01:39,287 INFO L231 Difference]: Finished difference. Result has 20 places, 0 transitions, 0 flow [2024-10-13 07:01:39,287 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=29, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=20, PETRI_TRANSITIONS=0} [2024-10-13 07:01:39,287 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, -6 predicate places. [2024-10-13 07:01:39,288 INFO L471 AbstractCegarLoop]: Abstraction has has 20 places, 0 transitions, 0 flow [2024-10-13 07:01:39,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 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) [2024-10-13 07:01:39,292 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-10-13 07:01:39,292 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2024-10-13 07:01:39,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 07:01:39,293 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-13 07:01:39,296 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-13 07:01:39,296 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-13 07:01:39,301 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:01:39 BasicIcfg [2024-10-13 07:01:39,303 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-13 07:01:39,303 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-13 07:01:39,304 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-13 07:01:39,304 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-13 07:01:39,304 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:01:38" (3/4) ... [2024-10-13 07:01:39,306 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-13 07:01:39,309 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-10-13 07:01:39,312 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 29 nodes and edges [2024-10-13 07:01:39,312 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-10-13 07:01:39,312 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-13 07:01:39,312 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-13 07:01:39,386 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-13 07:01:39,387 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-13 07:01:39,387 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-13 07:01:39,390 INFO L158 Benchmark]: Toolchain (without parser) took 2153.10ms. Allocated memory was 192.9MB in the beginning and 255.9MB in the end (delta: 62.9MB). Free memory was 127.9MB in the beginning and 152.1MB in the end (delta: -24.1MB). Peak memory consumption was 39.2MB. Max. memory is 16.1GB. [2024-10-13 07:01:39,391 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 96.5MB. Free memory was 51.3MB in the beginning and 51.2MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 07:01:39,391 INFO L158 Benchmark]: CACSL2BoogieTranslator took 444.34ms. Allocated memory is still 192.9MB. Free memory was 127.4MB in the beginning and 150.1MB in the end (delta: -22.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-10-13 07:01:39,392 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.45ms. Allocated memory is still 192.9MB. Free memory was 150.1MB in the beginning and 148.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 07:01:39,392 INFO L158 Benchmark]: Boogie Preprocessor took 35.22ms. Allocated memory is still 192.9MB. Free memory was 148.1MB in the beginning and 146.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 07:01:39,393 INFO L158 Benchmark]: RCFGBuilder took 352.24ms. Allocated memory is still 192.9MB. Free memory was 146.0MB in the beginning and 121.7MB in the end (delta: 24.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-10-13 07:01:39,393 INFO L158 Benchmark]: TraceAbstraction took 1198.06ms. Allocated memory was 192.9MB in the beginning and 255.9MB in the end (delta: 62.9MB). Free memory was 120.9MB in the beginning and 156.3MB in the end (delta: -35.4MB). Peak memory consumption was 30.3MB. Max. memory is 16.1GB. [2024-10-13 07:01:39,394 INFO L158 Benchmark]: Witness Printer took 83.72ms. Allocated memory is still 255.9MB. Free memory was 156.3MB in the beginning and 152.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-13 07:01:39,395 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 96.5MB. Free memory was 51.3MB in the beginning and 51.2MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 444.34ms. Allocated memory is still 192.9MB. Free memory was 127.4MB in the beginning and 150.1MB in the end (delta: -22.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.45ms. Allocated memory is still 192.9MB. Free memory was 150.1MB in the beginning and 148.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.22ms. Allocated memory is still 192.9MB. Free memory was 148.1MB in the beginning and 146.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 352.24ms. Allocated memory is still 192.9MB. Free memory was 146.0MB in the beginning and 121.7MB in the end (delta: 24.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 1198.06ms. Allocated memory was 192.9MB in the beginning and 255.9MB in the end (delta: 62.9MB). Free memory was 120.9MB in the beginning and 156.3MB in the end (delta: -35.4MB). Peak memory consumption was 30.3MB. Max. memory is 16.1GB. * Witness Printer took 83.72ms. Allocated memory is still 255.9MB. Free memory was 156.3MB in the beginning and 152.1MB 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, 45 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: 1.1s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 43 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 43 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 148 IncrementalHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 3 mSDtfsCounter, 148 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=1, InterpolantAutomatonStates: 15, 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, 0.5s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 159 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! [2024-10-13 07:01:39,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE