./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_45-traces-per-global-and-current-lock-mine-incomparable_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_45-traces-per-global-and-current-lock-mine-incomparable_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 eab672eda1edfc97284913525627300d4c299ae27e8726a3a4858e3cefa92c8f --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 07:01:42,649 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 07:01:42,722 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-13 07:01:42,726 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 07:01:42,728 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 07:01:42,750 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 07:01:42,751 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 07:01:42,751 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 07:01:42,752 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 07:01:42,753 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 07:01:42,753 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 07:01:42,753 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 07:01:42,754 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 07:01:42,755 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 07:01:42,755 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 07:01:42,755 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 07:01:42,756 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 07:01:42,756 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 07:01:42,756 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 07:01:42,756 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 07:01:42,759 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 07:01:42,760 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 07:01:42,760 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 07:01:42,761 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 07:01:42,761 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 07:01:42,761 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 07:01:42,761 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 07:01:42,761 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 07:01:42,762 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 07:01:42,762 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 07:01:42,762 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 07:01:42,762 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 07:01:42,762 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 07:01:42,762 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 07:01:42,762 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 07:01:42,762 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 07:01:42,763 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 07:01:42,763 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 07:01:42,763 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 07:01:42,763 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 07:01:42,763 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 07:01:42,764 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 07:01:42,764 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eab672eda1edfc97284913525627300d4c299ae27e8726a3a4858e3cefa92c8f [2024-10-13 07:01:42,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 07:01:42,985 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 07:01:42,987 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 07:01:42,988 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 07:01:42,988 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 07:01:42,989 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_45-traces-per-global-and-current-lock-mine-incomparable_true.i [2024-10-13 07:01:44,194 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 07:01:44,407 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 07:01:44,408 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_45-traces-per-global-and-current-lock-mine-incomparable_true.i [2024-10-13 07:01:44,420 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcb2f67b9/785eda3e325049bd9c1754fa7885579d/FLAGec6525a4a [2024-10-13 07:01:44,762 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcb2f67b9/785eda3e325049bd9c1754fa7885579d [2024-10-13 07:01:44,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 07:01:44,765 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 07:01:44,766 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 07:01:44,766 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 07:01:44,770 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 07:01:44,770 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:01:44" (1/1) ... [2024-10-13 07:01:44,771 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52916c6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:44, skipping insertion in model container [2024-10-13 07:01:44,771 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:01:44" (1/1) ... [2024-10-13 07:01:44,807 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 07:01:44,952 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_45-traces-per-global-and-current-lock-mine-incomparable_true.i[1129,1142] [2024-10-13 07:01:45,046 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 07:01:45,057 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 07:01:45,069 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_45-traces-per-global-and-current-lock-mine-incomparable_true.i[1129,1142] [2024-10-13 07:01:45,105 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 07:01:45,133 INFO L204 MainTranslator]: Completed translation [2024-10-13 07:01:45,133 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:45 WrapperNode [2024-10-13 07:01:45,134 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 07:01:45,134 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 07:01:45,135 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 07:01:45,135 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 07:01:45,140 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:45" (1/1) ... [2024-10-13 07:01:45,151 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:45" (1/1) ... [2024-10-13 07:01:45,169 INFO L138 Inliner]: procedures = 162, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 57 [2024-10-13 07:01:45,170 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 07:01:45,170 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 07:01:45,170 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 07:01:45,171 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 07:01:45,178 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:45" (1/1) ... [2024-10-13 07:01:45,178 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:45" (1/1) ... [2024-10-13 07:01:45,182 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:45" (1/1) ... [2024-10-13 07:01:45,196 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 07:01:45,196 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:45" (1/1) ... [2024-10-13 07:01:45,197 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:45" (1/1) ... [2024-10-13 07:01:45,202 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:45" (1/1) ... [2024-10-13 07:01:45,203 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:45" (1/1) ... [2024-10-13 07:01:45,206 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:45" (1/1) ... [2024-10-13 07:01:45,207 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:45" (1/1) ... [2024-10-13 07:01:45,212 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 07:01:45,212 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 07:01:45,212 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 07:01:45,212 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 07:01:45,213 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:45" (1/1) ... [2024-10-13 07:01:45,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 07:01:45,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:01:45,245 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 07:01:45,247 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 07:01:45,286 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-13 07:01:45,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 07:01:45,286 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-13 07:01:45,286 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-13 07:01:45,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 07:01:45,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 07:01:45,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-13 07:01:45,288 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-13 07:01:45,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 07:01:45,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 07:01:45,289 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 07:01:45,401 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 07:01:45,403 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 07:01:45,540 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 07:01:45,540 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 07:01:45,627 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 07:01:45,627 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-13 07:01:45,627 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:01:45 BoogieIcfgContainer [2024-10-13 07:01:45,627 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 07:01:45,629 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 07:01:45,629 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 07:01:45,636 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 07:01:45,636 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:01:44" (1/3) ... [2024-10-13 07:01:45,637 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@598e0ee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:01:45, skipping insertion in model container [2024-10-13 07:01:45,637 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:01:45" (2/3) ... [2024-10-13 07:01:45,637 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@598e0ee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:01:45, skipping insertion in model container [2024-10-13 07:01:45,637 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:01:45" (3/3) ... [2024-10-13 07:01:45,638 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_45-traces-per-global-and-current-lock-mine-incomparable_true.i [2024-10-13 07:01:45,652 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 07:01:45,652 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-13 07:01:45,653 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 07:01:45,680 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 07:01:45,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 30 transitions, 64 flow [2024-10-13 07:01:45,726 INFO L124 PetriNetUnfolderBase]: 1/29 cut-off events. [2024-10-13 07:01:45,726 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 07:01:45,733 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 23 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 07:01:45,733 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 30 transitions, 64 flow [2024-10-13 07:01:45,735 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 22 transitions, 47 flow [2024-10-13 07:01:45,746 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 07:01:45,751 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;@57a17a1f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 07:01:45,751 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-13 07:01:45,759 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 07:01:45,759 INFO L124 PetriNetUnfolderBase]: 0/21 cut-off events. [2024-10-13 07:01:45,759 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 07:01:45,760 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:01:45,760 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:01:45,761 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:01:45,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:01:45,766 INFO L85 PathProgramCache]: Analyzing trace with hash -544890641, now seen corresponding path program 1 times [2024-10-13 07:01:45,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:01:45,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021278528] [2024-10-13 07:01:45,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:01:45,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:01:45,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:01:46,118 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 07:01:46,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:01:46,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021278528] [2024-10-13 07:01:46,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021278528] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:01:46,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:01:46,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 07:01:46,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189257699] [2024-10-13 07:01:46,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:01:46,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 07:01:46,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:01:46,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 07:01:46,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 07:01:46,154 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-10-13 07:01:46,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 47 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) [2024-10-13 07:01:46,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:01:46,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-10-13 07:01:46,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:01:46,265 INFO L124 PetriNetUnfolderBase]: 52/157 cut-off events. [2024-10-13 07:01:46,265 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 07:01:46,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 295 conditions, 157 events. 52/157 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 617 event pairs, 24 based on Foata normal form. 11/167 useless extension candidates. Maximal degree in co-relation 286. Up to 82 conditions per place. [2024-10-13 07:01:46,269 INFO L140 encePairwiseOnDemand]: 26/30 looper letters, 18 selfloop transitions, 2 changer transitions 14/40 dead transitions. [2024-10-13 07:01:46,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 40 transitions, 151 flow [2024-10-13 07:01:46,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:01:46,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:01:46,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 76 transitions. [2024-10-13 07:01:46,279 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5066666666666667 [2024-10-13 07:01:46,280 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 47 flow. Second operand 5 states and 76 transitions. [2024-10-13 07:01:46,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 40 transitions, 151 flow [2024-10-13 07:01:46,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 40 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 07:01:46,284 INFO L231 Difference]: Finished difference. Result has 32 places, 22 transitions, 58 flow [2024-10-13 07:01:46,286 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=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=58, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2024-10-13 07:01:46,288 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 6 predicate places. [2024-10-13 07:01:46,288 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 58 flow [2024-10-13 07:01:46,289 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) [2024-10-13 07:01:46,289 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:01:46,289 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:01:46,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 07:01:46,289 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:01:46,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:01:46,290 INFO L85 PathProgramCache]: Analyzing trace with hash -932562776, now seen corresponding path program 1 times [2024-10-13 07:01:46,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:01:46,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197548875] [2024-10-13 07:01:46,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:01:46,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:01:46,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:01:46,397 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 07:01:46,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:01:46,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197548875] [2024-10-13 07:01:46,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197548875] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:01:46,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:01:46,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 07:01:46,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473063812] [2024-10-13 07:01:46,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:01:46,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 07:01:46,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:01:46,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 07:01:46,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 07:01:46,400 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-10-13 07:01:46,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 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) [2024-10-13 07:01:46,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:01:46,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-10-13 07:01:46,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:01:46,440 INFO L124 PetriNetUnfolderBase]: 15/57 cut-off events. [2024-10-13 07:01:46,440 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-13 07:01:46,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 57 events. 15/57 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 114 event pairs, 6 based on Foata normal form. 4/60 useless extension candidates. Maximal degree in co-relation 113. Up to 28 conditions per place. [2024-10-13 07:01:46,441 INFO L140 encePairwiseOnDemand]: 26/30 looper letters, 14 selfloop transitions, 4 changer transitions 1/26 dead transitions. [2024-10-13 07:01:46,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 26 transitions, 106 flow [2024-10-13 07:01:46,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 07:01:46,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 07:01:46,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2024-10-13 07:01:46,443 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-10-13 07:01:46,443 INFO L175 Difference]: Start difference. First operand has 32 places, 22 transitions, 58 flow. Second operand 3 states and 51 transitions. [2024-10-13 07:01:46,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 26 transitions, 106 flow [2024-10-13 07:01:46,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 26 transitions, 100 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-10-13 07:01:46,444 INFO L231 Difference]: Finished difference. Result has 29 places, 22 transitions, 60 flow [2024-10-13 07:01:46,444 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=29, PETRI_TRANSITIONS=22} [2024-10-13 07:01:46,445 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2024-10-13 07:01:46,445 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 22 transitions, 60 flow [2024-10-13 07:01:46,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 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) [2024-10-13 07:01:46,445 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:01:46,445 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:01:46,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 07:01:46,445 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:01:46,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:01:46,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1375046040, now seen corresponding path program 2 times [2024-10-13 07:01:46,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:01:46,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283666437] [2024-10-13 07:01:46,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:01:46,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:01:46,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:01:46,544 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 07:01:46,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:01:46,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283666437] [2024-10-13 07:01:46,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283666437] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:01:46,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:01:46,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 07:01:46,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308957631] [2024-10-13 07:01:46,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:01:46,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 07:01:46,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:01:46,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 07:01:46,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 07:01:46,548 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-10-13 07:01:46,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 60 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 07:01:46,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:01:46,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-10-13 07:01:46,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:01:46,588 INFO L124 PetriNetUnfolderBase]: 5/40 cut-off events. [2024-10-13 07:01:46,589 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-13 07:01:46,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 40 events. 5/40 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 45 event pairs, 0 based on Foata normal form. 8/48 useless extension candidates. Maximal degree in co-relation 75. Up to 21 conditions per place. [2024-10-13 07:01:46,590 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 10 selfloop transitions, 6 changer transitions 2/25 dead transitions. [2024-10-13 07:01:46,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 25 transitions, 104 flow [2024-10-13 07:01:46,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 07:01:46,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 07:01:46,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 61 transitions. [2024-10-13 07:01:46,591 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5083333333333333 [2024-10-13 07:01:46,591 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 60 flow. Second operand 4 states and 61 transitions. [2024-10-13 07:01:46,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 25 transitions, 104 flow [2024-10-13 07:01:46,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 25 transitions, 99 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 07:01:46,592 INFO L231 Difference]: Finished difference. Result has 31 places, 22 transitions, 68 flow [2024-10-13 07:01:46,592 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=68, PETRI_PLACES=31, PETRI_TRANSITIONS=22} [2024-10-13 07:01:46,593 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 5 predicate places. [2024-10-13 07:01:46,593 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 22 transitions, 68 flow [2024-10-13 07:01:46,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 07:01:46,594 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:01:46,594 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:01:46,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 07:01:46,595 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:01:46,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:01:46,595 INFO L85 PathProgramCache]: Analyzing trace with hash 2110635971, now seen corresponding path program 1 times [2024-10-13 07:01:46,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:01:46,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928639021] [2024-10-13 07:01:46,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:01:46,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:01:46,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:01:46,730 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 07:01:46,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:01:46,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928639021] [2024-10-13 07:01:46,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928639021] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:01:46,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:01:46,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 07:01:46,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994787781] [2024-10-13 07:01:46,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:01:46,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 07:01:46,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:01:46,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 07:01:46,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 07:01:46,732 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-10-13 07:01:46,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 22 transitions, 68 flow. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 07:01:46,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:01:46,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-10-13 07:01:46,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:01:46,756 INFO L124 PetriNetUnfolderBase]: 3/23 cut-off events. [2024-10-13 07:01:46,756 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-10-13 07:01:46,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 23 events. 3/23 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 35 event pairs, 1 based on Foata normal form. 1/23 useless extension candidates. Maximal degree in co-relation 45. Up to 11 conditions per place. [2024-10-13 07:01:46,756 INFO L140 encePairwiseOnDemand]: 27/30 looper letters, 0 selfloop transitions, 0 changer transitions 16/16 dead transitions. [2024-10-13 07:01:46,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 16 transitions, 75 flow [2024-10-13 07:01:46,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 07:01:46,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 07:01:46,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 53 transitions. [2024-10-13 07:01:46,758 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-10-13 07:01:46,758 INFO L175 Difference]: Start difference. First operand has 31 places, 22 transitions, 68 flow. Second operand 4 states and 53 transitions. [2024-10-13 07:01:46,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 16 transitions, 75 flow [2024-10-13 07:01:46,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 16 transitions, 68 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 07:01:46,759 INFO L231 Difference]: Finished difference. Result has 23 places, 0 transitions, 0 flow [2024-10-13 07:01:46,759 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=39, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=23, PETRI_TRANSITIONS=0} [2024-10-13 07:01:46,760 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, -3 predicate places. [2024-10-13 07:01:46,760 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 0 transitions, 0 flow [2024-10-13 07:01:46,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 07:01:46,763 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-10-13 07:01:46,763 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2024-10-13 07:01:46,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 07:01:46,764 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-10-13 07:01:46,767 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-13 07:01:46,767 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-13 07:01:46,772 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:01:46 BasicIcfg [2024-10-13 07:01:46,773 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-13 07:01:46,773 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-13 07:01:46,773 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-13 07:01:46,773 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-13 07:01:46,774 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:01:45" (3/4) ... [2024-10-13 07:01:46,776 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-13 07:01:46,782 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-10-13 07:01:46,784 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 29 nodes and edges [2024-10-13 07:01:46,784 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-10-13 07:01:46,784 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-13 07:01:46,785 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-13 07:01:46,851 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-13 07:01:46,852 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-13 07:01:46,852 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-13 07:01:46,854 INFO L158 Benchmark]: Toolchain (without parser) took 2087.25ms. Allocated memory is still 192.9MB. Free memory was 163.8MB in the beginning and 123.1MB in the end (delta: 40.7MB). Peak memory consumption was 40.4MB. Max. memory is 16.1GB. [2024-10-13 07:01:46,854 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 130.0MB. Free memory was 91.7MB in the beginning and 91.6MB in the end (delta: 119.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 07:01:46,854 INFO L158 Benchmark]: CACSL2BoogieTranslator took 368.22ms. Allocated memory is still 192.9MB. Free memory was 163.8MB in the beginning and 142.0MB in the end (delta: 21.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-10-13 07:01:46,854 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.37ms. Allocated memory is still 192.9MB. Free memory was 142.0MB in the beginning and 140.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 07:01:46,855 INFO L158 Benchmark]: Boogie Preprocessor took 41.49ms. Allocated memory is still 192.9MB. Free memory was 140.6MB in the beginning and 138.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 07:01:46,855 INFO L158 Benchmark]: RCFGBuilder took 415.10ms. Allocated memory is still 192.9MB. Free memory was 138.6MB in the beginning and 113.5MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-10-13 07:01:46,855 INFO L158 Benchmark]: TraceAbstraction took 1143.38ms. Allocated memory is still 192.9MB. Free memory was 112.7MB in the beginning and 127.3MB in the end (delta: -14.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 07:01:46,855 INFO L158 Benchmark]: Witness Printer took 78.61ms. Allocated memory is still 192.9MB. Free memory was 127.3MB in the beginning and 123.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-13 07:01:46,858 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 130.0MB. Free memory was 91.7MB in the beginning and 91.6MB in the end (delta: 119.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 368.22ms. Allocated memory is still 192.9MB. Free memory was 163.8MB in the beginning and 142.0MB in the end (delta: 21.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.37ms. Allocated memory is still 192.9MB. Free memory was 142.0MB in the beginning and 140.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.49ms. Allocated memory is still 192.9MB. Free memory was 140.6MB in the beginning and 138.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 415.10ms. Allocated memory is still 192.9MB. Free memory was 138.6MB in the beginning and 113.5MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 1143.38ms. Allocated memory is still 192.9MB. Free memory was 112.7MB in the beginning and 127.3MB in the end (delta: -14.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 78.61ms. Allocated memory is still 192.9MB. Free memory was 127.3MB in the beginning and 123.1MB 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, 41 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: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 33 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 33 mSDsluCounter, 3 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 137 IncrementalHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 2 mSDtfsCounter, 137 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=3, InterpolantAutomatonStates: 16, 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, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 70 NumberOfCodeBlocks, 70 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 66 ConstructedInterpolants, 0 QuantifiedInterpolants, 231 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 07:01:46,877 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