./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_01-priv_nr_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_01-priv_nr_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 2f12d466eb2f537fd698a609dad75de92993414755aa8aadb35a91de87d65611 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 16:24:10,808 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 16:24:10,899 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 16:24:10,904 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 16:24:10,905 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 16:24:10,937 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 16:24:10,938 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 16:24:10,938 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 16:24:10,939 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 16:24:10,943 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 16:24:10,943 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 16:24:10,944 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 16:24:10,945 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 16:24:10,946 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 16:24:10,947 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 16:24:10,947 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 16:24:10,947 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 16:24:10,948 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 16:24:10,948 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 16:24:10,948 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 16:24:10,948 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 16:24:10,952 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 16:24:10,952 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 16:24:10,953 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 16:24:10,953 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 16:24:10,953 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 16:24:10,954 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 16:24:10,954 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 16:24:10,955 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 16:24:10,955 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 16:24:10,956 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 16:24:10,956 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 16:24:10,956 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:24:10,956 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 16:24:10,957 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 16:24:10,957 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 16:24:10,957 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 16:24:10,957 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 16:24:10,958 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 16:24:10,958 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 16:24:10,958 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 16:24:10,958 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 16:24:10,959 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 16:24:10,959 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f12d466eb2f537fd698a609dad75de92993414755aa8aadb35a91de87d65611 [2024-06-27 16:24:11,252 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 16:24:11,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 16:24:11,276 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 16:24:11,277 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 16:24:11,277 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 16:24:11,278 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_01-priv_nr_true.i [2024-06-27 16:24:12,546 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 16:24:12,793 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 16:24:12,796 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_01-priv_nr_true.i [2024-06-27 16:24:12,818 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9dce3bd6/99fbb7a6e51247c882c8486ee8ae221d/FLAG9f5449343 [2024-06-27 16:24:12,837 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9dce3bd6/99fbb7a6e51247c882c8486ee8ae221d [2024-06-27 16:24:12,840 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 16:24:12,841 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-06-27 16:24:12,844 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 16:24:12,844 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 16:24:12,853 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 16:24:12,854 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:24:12" (1/1) ... [2024-06-27 16:24:12,855 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d73454d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:24:12, skipping insertion in model container [2024-06-27 16:24:12,855 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:24:12" (1/1) ... [2024-06-27 16:24:12,904 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 16:24:13,083 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_01-priv_nr_true.i[1084,1097] [2024-06-27 16:24:13,279 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:24:13,324 INFO L202 MainTranslator]: Completed pre-run [2024-06-27 16:24:13,337 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_01-priv_nr_true.i[1084,1097] [2024-06-27 16:24:13,384 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:24:13,447 INFO L206 MainTranslator]: Completed translation [2024-06-27 16:24:13,447 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:24:13 WrapperNode [2024-06-27 16:24:13,448 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 16:24:13,449 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 16:24:13,449 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 16:24:13,449 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 16:24:13,457 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:24:13" (1/1) ... [2024-06-27 16:24:13,487 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:24:13" (1/1) ... [2024-06-27 16:24:13,508 INFO L138 Inliner]: procedures = 162, calls = 21, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 83 [2024-06-27 16:24:13,509 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 16:24:13,509 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 16:24:13,510 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 16:24:13,510 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 16:24:13,522 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:24:13" (1/1) ... [2024-06-27 16:24:13,522 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:24:13" (1/1) ... [2024-06-27 16:24:13,529 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:24:13" (1/1) ... [2024-06-27 16:24:13,555 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2024-06-27 16:24:13,556 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:24:13" (1/1) ... [2024-06-27 16:24:13,556 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:24:13" (1/1) ... [2024-06-27 16:24:13,569 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:24:13" (1/1) ... [2024-06-27 16:24:13,575 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:24:13" (1/1) ... [2024-06-27 16:24:13,578 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:24:13" (1/1) ... [2024-06-27 16:24:13,579 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:24:13" (1/1) ... [2024-06-27 16:24:13,581 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 16:24:13,582 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 16:24:13,582 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 16:24:13,582 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 16:24:13,583 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:24:13" (1/1) ... [2024-06-27 16:24:13,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:24:13,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:24:13,620 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) [2024-06-27 16:24:13,622 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 [2024-06-27 16:24:13,668 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-06-27 16:24:13,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 16:24:13,668 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-06-27 16:24:13,668 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-06-27 16:24:13,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 16:24:13,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 16:24:13,668 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-06-27 16:24:13,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 16:24:13,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 16:24:13,670 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 16:24:13,793 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 16:24:13,795 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 16:24:13,995 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 16:24:13,995 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 16:24:14,110 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 16:24:14,110 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 16:24:14,111 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:24:14 BoogieIcfgContainer [2024-06-27 16:24:14,111 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 16:24:14,113 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 16:24:14,113 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 16:24:14,116 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 16:24:14,116 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 04:24:12" (1/3) ... [2024-06-27 16:24:14,117 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@387b5f29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:24:14, skipping insertion in model container [2024-06-27 16:24:14,117 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:24:13" (2/3) ... [2024-06-27 16:24:14,117 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@387b5f29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:24:14, skipping insertion in model container [2024-06-27 16:24:14,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:24:14" (3/3) ... [2024-06-27 16:24:14,119 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_01-priv_nr_true.i [2024-06-27 16:24:14,127 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-06-27 16:24:14,137 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 16:24:14,137 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 16:24:14,138 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 16:24:14,169 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-06-27 16:24:14,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 35 transitions, 77 flow [2024-06-27 16:24:14,243 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2024-06-27 16:24:14,247 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-06-27 16:24:14,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 34 events. 4/34 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2024-06-27 16:24:14,253 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 35 transitions, 77 flow [2024-06-27 16:24:14,257 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 32 transitions, 67 flow [2024-06-27 16:24:14,279 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 16:24:14,288 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@67a24438, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 16:24:14,288 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 16:24:14,298 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 16:24:14,298 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-06-27 16:24:14,298 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 16:24:14,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:24:14,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-06-27 16:24:14,300 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 16:24:14,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:24:14,307 INFO L85 PathProgramCache]: Analyzing trace with hash 258897, now seen corresponding path program 1 times [2024-06-27 16:24:14,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:24:14,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754915725] [2024-06-27 16:24:14,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:24:14,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:24:14,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:24:14,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:24:14,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:24:14,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754915725] [2024-06-27 16:24:14,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754915725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:24:14,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:24:14,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 16:24:14,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109894846] [2024-06-27 16:24:14,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:24:14,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 16:24:14,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:24:14,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 16:24:14,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 16:24:14,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-06-27 16:24:14,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 32 transitions, 67 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:24:14,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:24:14,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-06-27 16:24:14,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:24:14,800 INFO L124 PetriNetUnfolderBase]: 49/152 cut-off events. [2024-06-27 16:24:14,800 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 16:24:14,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 152 events. 49/152 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 604 event pairs, 42 based on Foata normal form. 22/156 useless extension candidates. Maximal degree in co-relation 260. Up to 100 conditions per place. [2024-06-27 16:24:14,803 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 18 selfloop transitions, 4 changer transitions 3/33 dead transitions. [2024-06-27 16:24:14,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 33 transitions, 119 flow [2024-06-27 16:24:14,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 16:24:14,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 16:24:14,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2024-06-27 16:24:14,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.580952380952381 [2024-06-27 16:24:14,818 INFO L175 Difference]: Start difference. First operand has 32 places, 32 transitions, 67 flow. Second operand 3 states and 61 transitions. [2024-06-27 16:24:14,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 33 transitions, 119 flow [2024-06-27 16:24:14,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 33 transitions, 118 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 16:24:14,823 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 62 flow [2024-06-27 16:24:14,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2024-06-27 16:24:14,828 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -1 predicate places. [2024-06-27 16:24:14,828 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 62 flow [2024-06-27 16:24:14,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:24:14,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:24:14,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:24:14,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 16:24:14,830 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 16:24:14,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:24:14,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1340768539, now seen corresponding path program 1 times [2024-06-27 16:24:14,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:24:14,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208358919] [2024-06-27 16:24:14,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:24:14,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:24:14,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:24:14,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:24:14,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:24:14,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208358919] [2024-06-27 16:24:14,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208358919] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:24:14,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:24:14,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 16:24:14,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614657906] [2024-06-27 16:24:14,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:24:14,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 16:24:14,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:24:14,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 16:24:14,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 16:24:14,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-06-27 16:24:14,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 62 flow. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2024-06-27 16:24:14,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:24:14,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-06-27 16:24:14,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:24:15,043 INFO L124 PetriNetUnfolderBase]: 48/147 cut-off events. [2024-06-27 16:24:15,043 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-06-27 16:24:15,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 147 events. 48/147 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 554 event pairs, 19 based on Foata normal form. 8/147 useless extension candidates. Maximal degree in co-relation 274. Up to 65 conditions per place. [2024-06-27 16:24:15,045 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 24 selfloop transitions, 6 changer transitions 3/41 dead transitions. [2024-06-27 16:24:15,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 41 transitions, 160 flow [2024-06-27 16:24:15,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:24:15,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:24:15,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 84 transitions. [2024-06-27 16:24:15,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48 [2024-06-27 16:24:15,047 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 62 flow. Second operand 5 states and 84 transitions. [2024-06-27 16:24:15,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 41 transitions, 160 flow [2024-06-27 16:24:15,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 41 transitions, 150 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 16:24:15,050 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 90 flow [2024-06-27 16:24:15,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=90, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2024-06-27 16:24:15,051 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 4 predicate places. [2024-06-27 16:24:15,051 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 90 flow [2024-06-27 16:24:15,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2024-06-27 16:24:15,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:24:15,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:24:15,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 16:24:15,052 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 16:24:15,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:24:15,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1334436354, now seen corresponding path program 1 times [2024-06-27 16:24:15,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:24:15,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863159769] [2024-06-27 16:24:15,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:24:15,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:24:15,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:24:15,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:24:15,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:24:15,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863159769] [2024-06-27 16:24:15,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863159769] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:24:15,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:24:15,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 16:24:15,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808089206] [2024-06-27 16:24:15,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:24:15,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 16:24:15,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:24:15,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 16:24:15,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 16:24:15,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-06-27 16:24:15,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2024-06-27 16:24:15,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:24:15,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-06-27 16:24:15,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:24:15,226 INFO L124 PetriNetUnfolderBase]: 53/145 cut-off events. [2024-06-27 16:24:15,226 INFO L125 PetriNetUnfolderBase]: For 65/73 co-relation queries the response was YES. [2024-06-27 16:24:15,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 145 events. 53/145 cut-off events. For 65/73 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 519 event pairs, 15 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 332. Up to 65 conditions per place. [2024-06-27 16:24:15,228 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 24 selfloop transitions, 5 changer transitions 6/42 dead transitions. [2024-06-27 16:24:15,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 42 transitions, 196 flow [2024-06-27 16:24:15,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:24:15,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:24:15,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2024-06-27 16:24:15,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5028571428571429 [2024-06-27 16:24:15,231 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 90 flow. Second operand 5 states and 88 transitions. [2024-06-27 16:24:15,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 42 transitions, 196 flow [2024-06-27 16:24:15,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 42 transitions, 189 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 16:24:15,233 INFO L231 Difference]: Finished difference. Result has 40 places, 27 transitions, 107 flow [2024-06-27 16:24:15,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=107, PETRI_PLACES=40, PETRI_TRANSITIONS=27} [2024-06-27 16:24:15,234 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 8 predicate places. [2024-06-27 16:24:15,234 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 27 transitions, 107 flow [2024-06-27 16:24:15,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2024-06-27 16:24:15,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:24:15,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:24:15,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 16:24:15,235 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 16:24:15,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:24:15,236 INFO L85 PathProgramCache]: Analyzing trace with hash 789242179, now seen corresponding path program 1 times [2024-06-27 16:24:15,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:24:15,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206995241] [2024-06-27 16:24:15,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:24:15,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:24:15,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:24:15,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:24:15,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:24:15,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206995241] [2024-06-27 16:24:15,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206995241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:24:15,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:24:15,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 16:24:15,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690312429] [2024-06-27 16:24:15,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:24:15,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 16:24:15,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:24:15,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 16:24:15,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 16:24:15,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 35 [2024-06-27 16:24:15,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 27 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2024-06-27 16:24:15,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:24:15,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 35 [2024-06-27 16:24:15,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:24:15,380 INFO L124 PetriNetUnfolderBase]: 15/69 cut-off events. [2024-06-27 16:24:15,380 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2024-06-27 16:24:15,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 69 events. 15/69 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 148 event pairs, 5 based on Foata normal form. 7/76 useless extension candidates. Maximal degree in co-relation 156. Up to 32 conditions per place. [2024-06-27 16:24:15,381 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 16 selfloop transitions, 4 changer transitions 0/30 dead transitions. [2024-06-27 16:24:15,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 30 transitions, 153 flow [2024-06-27 16:24:15,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 16:24:15,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 16:24:15,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2024-06-27 16:24:15,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5904761904761905 [2024-06-27 16:24:15,383 INFO L175 Difference]: Start difference. First operand has 40 places, 27 transitions, 107 flow. Second operand 3 states and 62 transitions. [2024-06-27 16:24:15,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 30 transitions, 153 flow [2024-06-27 16:24:15,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 30 transitions, 142 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-27 16:24:15,385 INFO L231 Difference]: Finished difference. Result has 38 places, 27 transitions, 104 flow [2024-06-27 16:24:15,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=38, PETRI_TRANSITIONS=27} [2024-06-27 16:24:15,386 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 6 predicate places. [2024-06-27 16:24:15,386 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 27 transitions, 104 flow [2024-06-27 16:24:15,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2024-06-27 16:24:15,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:24:15,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:24:15,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 16:24:15,387 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 16:24:15,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:24:15,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1221497984, now seen corresponding path program 1 times [2024-06-27 16:24:15,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:24:15,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754171651] [2024-06-27 16:24:15,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:24:15,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:24:15,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:24:15,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:24:15,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:24:15,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754171651] [2024-06-27 16:24:15,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754171651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:24:15,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:24:15,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 16:24:15,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291194714] [2024-06-27 16:24:15,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:24:15,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:24:15,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:24:15,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:24:15,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:24:15,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-06-27 16:24:15,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 27 transitions, 104 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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) [2024-06-27 16:24:15,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:24:15,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-06-27 16:24:15,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:24:15,586 INFO L124 PetriNetUnfolderBase]: 17/70 cut-off events. [2024-06-27 16:24:15,586 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-06-27 16:24:15,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 70 events. 17/70 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 132 event pairs, 9 based on Foata normal form. 1/71 useless extension candidates. Maximal degree in co-relation 164. Up to 22 conditions per place. [2024-06-27 16:24:15,589 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 14 selfloop transitions, 4 changer transitions 10/32 dead transitions. [2024-06-27 16:24:15,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 32 transitions, 171 flow [2024-06-27 16:24:15,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 16:24:15,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 16:24:15,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2024-06-27 16:24:15,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4095238095238095 [2024-06-27 16:24:15,592 INFO L175 Difference]: Start difference. First operand has 38 places, 27 transitions, 104 flow. Second operand 6 states and 86 transitions. [2024-06-27 16:24:15,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 32 transitions, 171 flow [2024-06-27 16:24:15,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 32 transitions, 163 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 16:24:15,597 INFO L231 Difference]: Finished difference. Result has 39 places, 19 transitions, 74 flow [2024-06-27 16:24:15,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=74, PETRI_PLACES=39, PETRI_TRANSITIONS=19} [2024-06-27 16:24:15,600 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 7 predicate places. [2024-06-27 16:24:15,600 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 19 transitions, 74 flow [2024-06-27 16:24:15,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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) [2024-06-27 16:24:15,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:24:15,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:24:15,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 16:24:15,601 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 16:24:15,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:24:15,602 INFO L85 PathProgramCache]: Analyzing trace with hash -350803637, now seen corresponding path program 1 times [2024-06-27 16:24:15,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:24:15,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29794776] [2024-06-27 16:24:15,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:24:15,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:24:15,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:24:15,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:24:15,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:24:15,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29794776] [2024-06-27 16:24:15,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29794776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:24:15,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:24:15,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 16:24:15,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203317780] [2024-06-27 16:24:15,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:24:15,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:24:15,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:24:15,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:24:15,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:24:15,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-06-27 16:24:15,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 19 transitions, 74 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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) [2024-06-27 16:24:15,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:24:15,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-06-27 16:24:15,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:24:15,802 INFO L124 PetriNetUnfolderBase]: 11/42 cut-off events. [2024-06-27 16:24:15,802 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-06-27 16:24:15,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 42 events. 11/42 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 44 event pairs, 4 based on Foata normal form. 2/44 useless extension candidates. Maximal degree in co-relation 99. Up to 15 conditions per place. [2024-06-27 16:24:15,804 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 0 selfloop transitions, 0 changer transitions 21/21 dead transitions. [2024-06-27 16:24:15,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 21 transitions, 115 flow [2024-06-27 16:24:15,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 16:24:15,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 16:24:15,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 90 transitions. [2024-06-27 16:24:15,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3673469387755102 [2024-06-27 16:24:15,806 INFO L175 Difference]: Start difference. First operand has 39 places, 19 transitions, 74 flow. Second operand 7 states and 90 transitions. [2024-06-27 16:24:15,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 21 transitions, 115 flow [2024-06-27 16:24:15,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 21 transitions, 90 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-27 16:24:15,816 INFO L231 Difference]: Finished difference. Result has 28 places, 0 transitions, 0 flow [2024-06-27 16:24:15,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=28, PETRI_TRANSITIONS=0} [2024-06-27 16:24:15,817 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -4 predicate places. [2024-06-27 16:24:15,817 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 0 transitions, 0 flow [2024-06-27 16:24:15,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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) [2024-06-27 16:24:15,819 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2024-06-27 16:24:15,820 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2024-06-27 16:24:15,820 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2024-06-27 16:24:15,820 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2024-06-27 16:24:15,820 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2024-06-27 16:24:15,820 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2024-06-27 16:24:15,820 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2024-06-27 16:24:15,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 16:24:15,821 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-06-27 16:24:15,826 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 16:24:15,826 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 16:24:15,831 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 04:24:15 BasicIcfg [2024-06-27 16:24:15,831 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 16:24:15,832 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-06-27 16:24:15,832 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-06-27 16:24:15,832 INFO L274 PluginConnector]: Witness Printer initialized [2024-06-27 16:24:15,832 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:24:14" (3/4) ... [2024-06-27 16:24:15,834 INFO L137 WitnessPrinter]: Generating witness for correct program [2024-06-27 16:24:15,836 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-06-27 16:24:15,839 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 35 nodes and edges [2024-06-27 16:24:15,840 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2024-06-27 16:24:15,840 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-06-27 16:24:15,840 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-06-27 16:24:15,914 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-06-27 16:24:15,915 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-06-27 16:24:15,915 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-06-27 16:24:15,916 INFO L158 Benchmark]: Toolchain (without parser) took 3074.32ms. Allocated memory was 142.6MB in the beginning and 192.9MB in the end (delta: 50.3MB). Free memory was 85.0MB in the beginning and 91.9MB in the end (delta: -7.0MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2024-06-27 16:24:15,916 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 113.2MB. Free memory was 86.3MB in the beginning and 86.2MB in the end (delta: 77.5kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 16:24:15,916 INFO L158 Benchmark]: CACSL2BoogieTranslator took 603.78ms. Allocated memory is still 142.6MB. Free memory was 85.0MB in the beginning and 104.9MB in the end (delta: -20.0MB). Peak memory consumption was 17.7MB. Max. memory is 16.1GB. [2024-06-27 16:24:15,916 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.78ms. Allocated memory is still 142.6MB. Free memory was 104.9MB in the beginning and 103.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 16:24:15,917 INFO L158 Benchmark]: Boogie Preprocessor took 71.92ms. Allocated memory is still 142.6MB. Free memory was 102.5MB in the beginning and 100.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 16:24:15,917 INFO L158 Benchmark]: RCFGBuilder took 528.90ms. Allocated memory is still 142.6MB. Free memory was 100.4MB in the beginning and 75.2MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-06-27 16:24:15,917 INFO L158 Benchmark]: TraceAbstraction took 1718.49ms. Allocated memory was 142.6MB in the beginning and 192.9MB in the end (delta: 50.3MB). Free memory was 74.7MB in the beginning and 96.1MB in the end (delta: -21.4MB). Peak memory consumption was 30.5MB. Max. memory is 16.1GB. [2024-06-27 16:24:15,918 INFO L158 Benchmark]: Witness Printer took 83.34ms. Allocated memory is still 192.9MB. Free memory was 96.1MB in the beginning and 91.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 16:24:15,919 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 113.2MB. Free memory was 86.3MB in the beginning and 86.2MB in the end (delta: 77.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 603.78ms. Allocated memory is still 142.6MB. Free memory was 85.0MB in the beginning and 104.9MB in the end (delta: -20.0MB). Peak memory consumption was 17.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.78ms. Allocated memory is still 142.6MB. Free memory was 104.9MB in the beginning and 103.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 71.92ms. Allocated memory is still 142.6MB. Free memory was 102.5MB in the beginning and 100.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 528.90ms. Allocated memory is still 142.6MB. Free memory was 100.4MB in the beginning and 75.2MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 1718.49ms. Allocated memory was 142.6MB in the beginning and 192.9MB in the end (delta: 50.3MB). Free memory was 74.7MB in the beginning and 96.1MB in the end (delta: -21.4MB). Peak memory consumption was 30.5MB. Max. memory is 16.1GB. * Witness Printer took 83.34ms. Allocated memory is still 192.9MB. Free memory was 96.1MB in the beginning and 91.9MB 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 - 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 - 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 - 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, 47 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.6s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 87 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 69 mSDsluCounter, 16 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 288 IncrementalHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 6 mSDtfsCounter, 288 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=107occurred in iteration=3, InterpolantAutomatonStates: 29, 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, 0.7s InterpolantComputationTime, 65 NumberOfCodeBlocks, 65 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 59 ConstructedInterpolants, 0 QuantifiedInterpolants, 156 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-27 16:24:15,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE