./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_33-traces-v-matters_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 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_33-traces-v-matters_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 5093baaae269ae8f20fbce19a6dc2a002c438d5951124b2c99d459b145e3e5a5 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 14:29:27,568 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 14:29:27,627 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 14:29:27,630 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 14:29:27,630 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 14:29:27,656 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 14:29:27,657 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 14:29:27,657 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 14:29:27,658 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 14:29:27,659 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 14:29:27,659 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 14:29:27,660 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 14:29:27,660 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 14:29:27,661 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 14:29:27,662 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 14:29:27,662 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 14:29:27,662 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 14:29:27,662 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 14:29:27,663 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 14:29:27,663 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 14:29:27,663 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 14:29:27,665 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 14:29:27,665 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 14:29:27,665 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 14:29:27,665 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 14:29:27,666 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 14:29:27,666 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 14:29:27,666 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 14:29:27,666 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 14:29:27,666 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 14:29:27,667 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 14:29:27,667 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 14:29:27,667 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 14:29:27,667 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 14:29:27,667 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 14:29:27,668 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 14:29:27,668 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 14:29:27,668 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 14:29:27,669 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 14:29:27,669 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 14:29:27,669 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 14:29:27,669 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 14:29:27,670 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5093baaae269ae8f20fbce19a6dc2a002c438d5951124b2c99d459b145e3e5a5 [2024-10-14 14:29:27,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 14:29:27,883 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 14:29:27,886 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 14:29:27,886 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 14:29:27,887 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 14:29:27,888 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_33-traces-v-matters_true.i [2024-10-14 14:29:29,123 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 14:29:29,320 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 14:29:29,320 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_33-traces-v-matters_true.i [2024-10-14 14:29:29,335 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb58d1c05/341b70746b9b49c6956717b1a0001b09/FLAG424ec1253 [2024-10-14 14:29:29,348 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb58d1c05/341b70746b9b49c6956717b1a0001b09 [2024-10-14 14:29:29,350 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 14:29:29,352 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 14:29:29,353 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 14:29:29,354 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 14:29:29,358 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 14:29:29,358 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:29:29" (1/1) ... [2024-10-14 14:29:29,359 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fdb491b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:29:29, skipping insertion in model container [2024-10-14 14:29:29,359 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:29:29" (1/1) ... [2024-10-14 14:29:29,394 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 14:29:29,530 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_33-traces-v-matters_true.i[1093,1106] [2024-10-14 14:29:29,631 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 14:29:29,640 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 14:29:29,656 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_33-traces-v-matters_true.i[1093,1106] [2024-10-14 14:29:29,688 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 14:29:29,722 INFO L204 MainTranslator]: Completed translation [2024-10-14 14:29:29,722 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:29:29 WrapperNode [2024-10-14 14:29:29,722 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 14:29:29,723 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 14:29:29,724 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 14:29:29,724 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 14:29:29,729 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:29:29" (1/1) ... [2024-10-14 14:29:29,740 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:29:29" (1/1) ... [2024-10-14 14:29:29,758 INFO L138 Inliner]: procedures = 162, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 58 [2024-10-14 14:29:29,761 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 14:29:29,762 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 14:29:29,762 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 14:29:29,762 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 14:29:29,770 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:29:29" (1/1) ... [2024-10-14 14:29:29,771 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:29:29" (1/1) ... [2024-10-14 14:29:29,772 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:29:29" (1/1) ... [2024-10-14 14:29:29,787 INFO L175 MemorySlicer]: Split 17 memory accesses to 4 slices as follows [2, 5, 5, 5]. 29 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 5, 5]. The 0 writes are split as follows [0, 0, 0, 0]. [2024-10-14 14:29:29,788 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:29:29" (1/1) ... [2024-10-14 14:29:29,788 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:29:29" (1/1) ... [2024-10-14 14:29:29,795 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:29:29" (1/1) ... [2024-10-14 14:29:29,796 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:29:29" (1/1) ... [2024-10-14 14:29:29,799 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:29:29" (1/1) ... [2024-10-14 14:29:29,800 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:29:29" (1/1) ... [2024-10-14 14:29:29,805 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 14:29:29,805 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 14:29:29,805 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 14:29:29,805 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 14:29:29,806 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:29:29" (1/1) ... [2024-10-14 14:29:29,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 14:29:29,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:29:29,835 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) [2024-10-14 14:29:29,837 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 [2024-10-14 14:29:29,872 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-14 14:29:29,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 14:29:29,872 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-14 14:29:29,872 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-14 14:29:29,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 14:29:29,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 14:29:29,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-14 14:29:29,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-14 14:29:29,873 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-14 14:29:29,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 14:29:29,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 14:29:29,874 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 14:29:29,985 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 14:29:29,986 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 14:29:30,152 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 14:29:30,153 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 14:29:30,240 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 14:29:30,240 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-14 14:29:30,240 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:29:30 BoogieIcfgContainer [2024-10-14 14:29:30,241 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 14:29:30,242 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 14:29:30,242 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 14:29:30,245 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 14:29:30,245 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:29:29" (1/3) ... [2024-10-14 14:29:30,246 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7019c31f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:29:30, skipping insertion in model container [2024-10-14 14:29:30,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:29:29" (2/3) ... [2024-10-14 14:29:30,246 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7019c31f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:29:30, skipping insertion in model container [2024-10-14 14:29:30,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:29:30" (3/3) ... [2024-10-14 14:29:30,247 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_33-traces-v-matters_true.i [2024-10-14 14:29:30,263 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 14:29:30,263 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 14:29:30,263 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 14:29:30,288 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 14:29:30,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 30 transitions, 64 flow [2024-10-14 14:29:30,334 INFO L124 PetriNetUnfolderBase]: 1/29 cut-off events. [2024-10-14 14:29:30,334 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 14:29:30,336 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. [2024-10-14 14:29:30,337 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 30 transitions, 64 flow [2024-10-14 14:29:30,339 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 26 transitions, 55 flow [2024-10-14 14:29:30,345 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 14:29:30,350 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;@2e181507, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 14:29:30,350 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-14 14:29:30,356 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 14:29:30,357 INFO L124 PetriNetUnfolderBase]: 0/23 cut-off events. [2024-10-14 14:29:30,357 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 14:29:30,357 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:29:30,357 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:29:30,358 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-14 14:29:30,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:29:30,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1244197641, now seen corresponding path program 1 times [2024-10-14 14:29:30,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:29:30,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593748663] [2024-10-14 14:29:30,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:29:30,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:29:30,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:29:30,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:29:30,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:29:30,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593748663] [2024-10-14 14:29:30,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593748663] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:29:30,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:29:30,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 14:29:30,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344762176] [2024-10-14 14:29:30,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:29:30,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 14:29:30,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:29:30,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 14:29:30,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 14:29:30,690 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-10-14 14:29:30,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 26 transitions, 55 flow. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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) [2024-10-14 14:29:30,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:29:30,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-10-14 14:29:30,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:29:30,844 INFO L124 PetriNetUnfolderBase]: 74/227 cut-off events. [2024-10-14 14:29:30,845 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 14:29:30,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 415 conditions, 227 events. 74/227 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1026 event pairs, 34 based on Foata normal form. 15/240 useless extension candidates. Maximal degree in co-relation 406. Up to 114 conditions per place. [2024-10-14 14:29:30,847 INFO L140 encePairwiseOnDemand]: 26/30 looper letters, 20 selfloop transitions, 2 changer transitions 20/50 dead transitions. [2024-10-14 14:29:30,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 50 transitions, 187 flow [2024-10-14 14:29:30,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 14:29:30,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 14:29:30,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions. [2024-10-14 14:29:30,857 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5933333333333334 [2024-10-14 14:29:30,858 INFO L175 Difference]: Start difference. First operand has 30 places, 26 transitions, 55 flow. Second operand 5 states and 89 transitions. [2024-10-14 14:29:30,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 50 transitions, 187 flow [2024-10-14 14:29:30,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 50 transitions, 186 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 14:29:30,863 INFO L231 Difference]: Finished difference. Result has 36 places, 26 transitions, 66 flow [2024-10-14 14:29:30,865 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=66, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2024-10-14 14:29:30,869 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 6 predicate places. [2024-10-14 14:29:30,869 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 66 flow [2024-10-14 14:29:30,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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) [2024-10-14 14:29:30,869 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:29:30,869 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:29:30,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 14:29:30,870 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-14 14:29:30,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:29:30,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1051383896, now seen corresponding path program 1 times [2024-10-14 14:29:30,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:29:30,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521688405] [2024-10-14 14:29:30,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:29:30,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:29:30,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:29:31,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:29:31,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:29:31,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521688405] [2024-10-14 14:29:31,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521688405] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:29:31,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:29:31,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 14:29:31,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145148726] [2024-10-14 14:29:31,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:29:31,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 14:29:31,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:29:31,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 14:29:31,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-14 14:29:31,044 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 30 [2024-10-14 14:29:31,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 66 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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) [2024-10-14 14:29:31,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:29:31,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 30 [2024-10-14 14:29:31,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:29:31,097 INFO L124 PetriNetUnfolderBase]: 15/69 cut-off events. [2024-10-14 14:29:31,098 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-10-14 14:29:31,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 69 events. 15/69 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 142 event pairs, 5 based on Foata normal form. 5/72 useless extension candidates. Maximal degree in co-relation 131. Up to 29 conditions per place. [2024-10-14 14:29:31,099 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 14 selfloop transitions, 5 changer transitions 1/29 dead transitions. [2024-10-14 14:29:31,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 29 transitions, 114 flow [2024-10-14 14:29:31,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 14:29:31,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 14:29:31,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2024-10-14 14:29:31,101 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-10-14 14:29:31,101 INFO L175 Difference]: Start difference. First operand has 36 places, 26 transitions, 66 flow. Second operand 4 states and 66 transitions. [2024-10-14 14:29:31,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 29 transitions, 114 flow [2024-10-14 14:29:31,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 29 transitions, 108 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-10-14 14:29:31,103 INFO L231 Difference]: Finished difference. Result has 34 places, 26 transitions, 70 flow [2024-10-14 14:29:31,103 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=70, PETRI_PLACES=34, PETRI_TRANSITIONS=26} [2024-10-14 14:29:31,103 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2024-10-14 14:29:31,105 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 26 transitions, 70 flow [2024-10-14 14:29:31,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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) [2024-10-14 14:29:31,105 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:29:31,106 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:29:31,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 14:29:31,106 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-14 14:29:31,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:29:31,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1846566744, now seen corresponding path program 2 times [2024-10-14 14:29:31,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:29:31,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454251164] [2024-10-14 14:29:31,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:29:31,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:29:31,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:29:31,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:29:31,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:29:31,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454251164] [2024-10-14 14:29:31,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454251164] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:29:31,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:29:31,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 14:29:31,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40818891] [2024-10-14 14:29:31,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:29:31,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 14:29:31,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:29:31,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 14:29:31,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-14 14:29:31,226 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 30 [2024-10-14 14:29:31,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 26 transitions, 70 flow. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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) [2024-10-14 14:29:31,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:29:31,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 30 [2024-10-14 14:29:31,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:29:31,278 INFO L124 PetriNetUnfolderBase]: 9/58 cut-off events. [2024-10-14 14:29:31,279 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-10-14 14:29:31,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 58 events. 9/58 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 107 event pairs, 1 based on Foata normal form. 4/60 useless extension candidates. Maximal degree in co-relation 113. Up to 21 conditions per place. [2024-10-14 14:29:31,279 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 16 selfloop transitions, 5 changer transitions 2/32 dead transitions. [2024-10-14 14:29:31,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 32 transitions, 134 flow [2024-10-14 14:29:31,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 14:29:31,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 14:29:31,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2024-10-14 14:29:31,281 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.575 [2024-10-14 14:29:31,281 INFO L175 Difference]: Start difference. First operand has 34 places, 26 transitions, 70 flow. Second operand 4 states and 69 transitions. [2024-10-14 14:29:31,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 32 transitions, 134 flow [2024-10-14 14:29:31,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 32 transitions, 127 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 14:29:31,282 INFO L231 Difference]: Finished difference. Result has 36 places, 27 transitions, 83 flow [2024-10-14 14:29:31,282 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=83, PETRI_PLACES=36, PETRI_TRANSITIONS=27} [2024-10-14 14:29:31,283 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 6 predicate places. [2024-10-14 14:29:31,283 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 27 transitions, 83 flow [2024-10-14 14:29:31,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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) [2024-10-14 14:29:31,283 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:29:31,283 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] [2024-10-14 14:29:31,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 14:29:31,284 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-14 14:29:31,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:29:31,285 INFO L85 PathProgramCache]: Analyzing trace with hash -184470131, now seen corresponding path program 1 times [2024-10-14 14:29:31,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:29:31,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501667458] [2024-10-14 14:29:31,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:29:31,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:29:31,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:29:31,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:29:31,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:29:31,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501667458] [2024-10-14 14:29:31,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501667458] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:29:31,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:29:31,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 14:29:31,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501821993] [2024-10-14 14:29:31,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:29:31,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 14:29:31,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:29:31,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 14:29:31,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-14 14:29:31,426 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 30 [2024-10-14 14:29:31,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 83 flow. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 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) [2024-10-14 14:29:31,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:29:31,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 30 [2024-10-14 14:29:31,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:29:31,449 INFO L124 PetriNetUnfolderBase]: 3/25 cut-off events. [2024-10-14 14:29:31,450 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-10-14 14:29:31,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 25 events. 3/25 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 29 event pairs, 3 based on Foata normal form. 1/24 useless extension candidates. Maximal degree in co-relation 48. Up to 10 conditions per place. [2024-10-14 14:29:31,450 INFO L140 encePairwiseOnDemand]: 27/30 looper letters, 0 selfloop transitions, 0 changer transitions 17/17 dead transitions. [2024-10-14 14:29:31,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 17 transitions, 82 flow [2024-10-14 14:29:31,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 14:29:31,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 14:29:31,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 58 transitions. [2024-10-14 14:29:31,451 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-10-14 14:29:31,452 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 83 flow. Second operand 4 states and 58 transitions. [2024-10-14 14:29:31,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 17 transitions, 82 flow [2024-10-14 14:29:31,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 17 transitions, 76 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 14:29:31,452 INFO L231 Difference]: Finished difference. Result has 25 places, 0 transitions, 0 flow [2024-10-14 14:29:31,452 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=25, PETRI_TRANSITIONS=0} [2024-10-14 14:29:31,453 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, -5 predicate places. [2024-10-14 14:29:31,453 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 0 transitions, 0 flow [2024-10-14 14:29:31,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 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) [2024-10-14 14:29:31,456 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-10-14 14:29:31,457 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2024-10-14 14:29:31,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 14:29:31,457 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-10-14 14:29:31,460 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-14 14:29:31,460 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-14 14:29:31,465 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 02:29:31 BasicIcfg [2024-10-14 14:29:31,465 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-14 14:29:31,466 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-14 14:29:31,466 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-14 14:29:31,467 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-14 14:29:31,467 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:29:30" (3/4) ... [2024-10-14 14:29:31,468 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-14 14:29:31,471 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-10-14 14:29:31,474 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 35 nodes and edges [2024-10-14 14:29:31,474 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-10-14 14:29:31,474 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-14 14:29:31,474 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-14 14:29:31,537 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-14 14:29:31,538 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-14 14:29:31,538 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-14 14:29:31,538 INFO L158 Benchmark]: Toolchain (without parser) took 2186.57ms. Allocated memory was 163.6MB in the beginning and 237.0MB in the end (delta: 73.4MB). Free memory was 103.3MB in the beginning and 171.6MB in the end (delta: -68.3MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. [2024-10-14 14:29:31,539 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 163.6MB. Free memory is still 122.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 14:29:31,540 INFO L158 Benchmark]: CACSL2BoogieTranslator took 370.18ms. Allocated memory is still 163.6MB. Free memory was 103.3MB in the beginning and 82.7MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-10-14 14:29:31,540 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.76ms. Allocated memory is still 163.6MB. Free memory was 82.7MB in the beginning and 80.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-14 14:29:31,540 INFO L158 Benchmark]: Boogie Preprocessor took 43.11ms. Allocated memory is still 163.6MB. Free memory was 80.7MB in the beginning and 78.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-14 14:29:31,541 INFO L158 Benchmark]: RCFGBuilder took 435.41ms. Allocated memory was 163.6MB in the beginning and 237.0MB in the end (delta: 73.4MB). Free memory was 78.6MB in the beginning and 189.8MB in the end (delta: -111.2MB). Peak memory consumption was 21.3MB. Max. memory is 16.1GB. [2024-10-14 14:29:31,541 INFO L158 Benchmark]: TraceAbstraction took 1223.00ms. Allocated memory is still 237.0MB. Free memory was 189.8MB in the beginning and 175.8MB in the end (delta: 14.0MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. [2024-10-14 14:29:31,541 INFO L158 Benchmark]: Witness Printer took 71.80ms. Allocated memory is still 237.0MB. Free memory was 175.8MB in the beginning and 171.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-14 14:29:31,542 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 163.6MB. Free memory is still 122.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 370.18ms. Allocated memory is still 163.6MB. Free memory was 103.3MB in the beginning and 82.7MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.76ms. Allocated memory is still 163.6MB. Free memory was 82.7MB in the beginning and 80.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.11ms. Allocated memory is still 163.6MB. Free memory was 80.7MB in the beginning and 78.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 435.41ms. Allocated memory was 163.6MB in the beginning and 237.0MB in the end (delta: 73.4MB). Free memory was 78.6MB in the beginning and 189.8MB in the end (delta: -111.2MB). Peak memory consumption was 21.3MB. Max. memory is 16.1GB. * TraceAbstraction took 1223.00ms. Allocated memory is still 237.0MB. Free memory was 189.8MB in the beginning and 175.8MB in the end (delta: 14.0MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. * Witness Printer took 71.80ms. Allocated memory is still 237.0MB. Free memory was 175.8MB in the beginning and 171.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 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: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 64 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 64 mSDsluCounter, 3 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 165 IncrementalHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 2 mSDtfsCounter, 165 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=83occurred in iteration=3, InterpolantAutomatonStates: 17, 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, 70 NumberOfCodeBlocks, 70 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 66 ConstructedInterpolants, 0 QuantifiedInterpolants, 340 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! [2024-10-14 14:29:31,564 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