./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/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.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 6883737711af32a6a824eca7af237353e2fdaf7712a6b3c22083c0d47b565ee7 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 07:04:45,656 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 07:04:45,749 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-13 07:04:45,753 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 07:04:45,754 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 07:04:45,779 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 07:04:45,781 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 07:04:45,781 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 07:04:45,781 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 07:04:45,782 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 07:04:45,782 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 07:04:45,782 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 07:04:45,783 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 07:04:45,783 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 07:04:45,784 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 07:04:45,784 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 07:04:45,786 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 07:04:45,786 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 07:04:45,787 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 07:04:45,787 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 07:04:45,787 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 07:04:45,792 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 07:04:45,792 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 07:04:45,793 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 07:04:45,793 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 07:04:45,793 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 07:04:45,794 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 07:04:45,794 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 07:04:45,794 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 07:04:45,794 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 07:04:45,795 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 07:04:45,795 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 07:04:45,795 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 07:04:45,795 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 07:04:45,795 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 07:04:45,796 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 07:04:45,796 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 07:04:45,796 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 07:04:45,796 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 07:04:45,797 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 07:04:45,797 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 07:04:45,798 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 07:04:45,798 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6883737711af32a6a824eca7af237353e2fdaf7712a6b3c22083c0d47b565ee7 [2024-10-13 07:04:46,074 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 07:04:46,096 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 07:04:46,099 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 07:04:46,100 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 07:04:46,101 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 07:04:46,102 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i [2024-10-13 07:04:47,603 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 07:04:47,852 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 07:04:47,852 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i [2024-10-13 07:04:47,871 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cb39311f/d4bfa660cd3c402b845a7853497607ba/FLAG167503ebc [2024-10-13 07:04:47,884 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cb39311f/d4bfa660cd3c402b845a7853497607ba [2024-10-13 07:04:47,887 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 07:04:47,888 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 07:04:47,891 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 07:04:47,891 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 07:04:47,896 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 07:04:47,897 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:04:47" (1/1) ... [2024-10-13 07:04:47,900 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c921490 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:47, skipping insertion in model container [2024-10-13 07:04:47,900 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:04:47" (1/1) ... [2024-10-13 07:04:47,943 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 07:04:48,155 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/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i[1120,1133] [2024-10-13 07:04:48,326 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 07:04:48,346 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 07:04:48,359 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/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i[1120,1133] [2024-10-13 07:04:48,402 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 07:04:48,444 INFO L204 MainTranslator]: Completed translation [2024-10-13 07:04:48,445 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:48 WrapperNode [2024-10-13 07:04:48,445 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 07:04:48,446 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 07:04:48,447 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 07:04:48,447 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 07:04:48,453 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:48" (1/1) ... [2024-10-13 07:04:48,467 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:48" (1/1) ... [2024-10-13 07:04:48,493 INFO L138 Inliner]: procedures = 165, calls = 46, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 162 [2024-10-13 07:04:48,493 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 07:04:48,494 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 07:04:48,494 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 07:04:48,494 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 07:04:48,506 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:48" (1/1) ... [2024-10-13 07:04:48,506 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:48" (1/1) ... [2024-10-13 07:04:48,509 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:48" (1/1) ... [2024-10-13 07:04:48,543 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]. [2024-10-13 07:04:48,545 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:48" (1/1) ... [2024-10-13 07:04:48,545 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:48" (1/1) ... [2024-10-13 07:04:48,552 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:48" (1/1) ... [2024-10-13 07:04:48,558 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:48" (1/1) ... [2024-10-13 07:04:48,559 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:48" (1/1) ... [2024-10-13 07:04:48,564 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:48" (1/1) ... [2024-10-13 07:04:48,566 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 07:04:48,567 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 07:04:48,567 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 07:04:48,568 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 07:04:48,568 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:48" (1/1) ... [2024-10-13 07:04:48,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 07:04:48,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:04:48,607 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 07:04:48,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 07:04:48,653 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-13 07:04:48,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 07:04:48,653 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-13 07:04:48,653 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-13 07:04:48,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 07:04:48,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 07:04:48,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-13 07:04:48,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-13 07:04:48,656 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-13 07:04:48,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 07:04:48,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 07:04:48,657 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 07:04:48,781 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 07:04:48,783 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 07:04:49,102 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 07:04:49,102 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 07:04:49,381 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 07:04:49,381 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-13 07:04:49,381 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:04:49 BoogieIcfgContainer [2024-10-13 07:04:49,382 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 07:04:49,385 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 07:04:49,385 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 07:04:49,389 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 07:04:49,390 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:04:47" (1/3) ... [2024-10-13 07:04:49,390 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bda3c4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:04:49, skipping insertion in model container [2024-10-13 07:04:49,390 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:04:48" (2/3) ... [2024-10-13 07:04:49,391 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bda3c4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:04:49, skipping insertion in model container [2024-10-13 07:04:49,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:04:49" (3/3) ... [2024-10-13 07:04:49,392 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i [2024-10-13 07:04:49,405 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 07:04:49,405 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-10-13 07:04:49,406 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 07:04:49,454 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 07:04:49,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 54 transitions, 112 flow [2024-10-13 07:04:49,549 INFO L124 PetriNetUnfolderBase]: 4/54 cut-off events. [2024-10-13 07:04:49,549 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 07:04:49,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 54 events. 4/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 71 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2024-10-13 07:04:49,554 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 54 transitions, 112 flow [2024-10-13 07:04:49,560 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 43 transitions, 89 flow [2024-10-13 07:04:49,579 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 07:04:49,588 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;@4c49f52b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 07:04:49,589 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-10-13 07:04:49,605 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 07:04:49,606 INFO L124 PetriNetUnfolderBase]: 1/19 cut-off events. [2024-10-13 07:04:49,606 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 07:04:49,607 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:04:49,608 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:04:49,608 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-10-13 07:04:49,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:04:49,614 INFO L85 PathProgramCache]: Analyzing trace with hash 2054869766, now seen corresponding path program 1 times [2024-10-13 07:04:49,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:04:49,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374019834] [2024-10-13 07:04:49,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:04:49,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:04:49,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:04:50,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:04:50,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:04:50,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374019834] [2024-10-13 07:04:50,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374019834] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:04:50,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:04:50,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 07:04:50,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477909027] [2024-10-13 07:04:50,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:04:50,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 07:04:50,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:04:50,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 07:04:50,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 07:04:50,203 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-10-13 07:04:50,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 43 transitions, 89 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 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) [2024-10-13 07:04:50,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:04:50,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-10-13 07:04:50,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:04:50,490 INFO L124 PetriNetUnfolderBase]: 202/486 cut-off events. [2024-10-13 07:04:50,491 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 07:04:50,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 927 conditions, 486 events. 202/486 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2168 event pairs, 47 based on Foata normal form. 41/497 useless extension candidates. Maximal degree in co-relation 916. Up to 252 conditions per place. [2024-10-13 07:04:50,498 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 44 selfloop transitions, 7 changer transitions 8/67 dead transitions. [2024-10-13 07:04:50,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 67 transitions, 255 flow [2024-10-13 07:04:50,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:04:50,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:04:50,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 136 transitions. [2024-10-13 07:04:50,515 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5037037037037037 [2024-10-13 07:04:50,517 INFO L175 Difference]: Start difference. First operand has 45 places, 43 transitions, 89 flow. Second operand 5 states and 136 transitions. [2024-10-13 07:04:50,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 67 transitions, 255 flow [2024-10-13 07:04:50,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 67 transitions, 254 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 07:04:50,527 INFO L231 Difference]: Finished difference. Result has 50 places, 39 transitions, 116 flow [2024-10-13 07:04:50,529 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=116, PETRI_PLACES=50, PETRI_TRANSITIONS=39} [2024-10-13 07:04:50,535 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 5 predicate places. [2024-10-13 07:04:50,536 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 39 transitions, 116 flow [2024-10-13 07:04:50,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 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) [2024-10-13 07:04:50,537 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:04:50,537 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:04:50,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 07:04:50,538 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-10-13 07:04:50,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:04:50,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1306797482, now seen corresponding path program 1 times [2024-10-13 07:04:50,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:04:50,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497819068] [2024-10-13 07:04:50,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:04:50,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:04:50,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:04:50,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:04:50,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:04:50,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497819068] [2024-10-13 07:04:50,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497819068] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:04:50,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:04:50,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 07:04:50,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904229462] [2024-10-13 07:04:50,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:04:50,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 07:04:50,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:04:50,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 07:04:50,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 07:04:50,761 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-10-13 07:04:50,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 39 transitions, 116 flow. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:04:50,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:04:50,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-10-13 07:04:50,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:04:51,087 INFO L124 PetriNetUnfolderBase]: 171/433 cut-off events. [2024-10-13 07:04:51,087 INFO L125 PetriNetUnfolderBase]: For 119/119 co-relation queries the response was YES. [2024-10-13 07:04:51,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 976 conditions, 433 events. 171/433 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1948 event pairs, 69 based on Foata normal form. 15/444 useless extension candidates. Maximal degree in co-relation 960. Up to 204 conditions per place. [2024-10-13 07:04:51,091 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 36 selfloop transitions, 4 changer transitions 38/86 dead transitions. [2024-10-13 07:04:51,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 86 transitions, 380 flow [2024-10-13 07:04:51,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 07:04:51,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-13 07:04:51,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2024-10-13 07:04:51,093 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4236111111111111 [2024-10-13 07:04:51,094 INFO L175 Difference]: Start difference. First operand has 50 places, 39 transitions, 116 flow. Second operand 8 states and 183 transitions. [2024-10-13 07:04:51,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 86 transitions, 380 flow [2024-10-13 07:04:51,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 86 transitions, 380 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 07:04:51,098 INFO L231 Difference]: Finished difference. Result has 57 places, 35 transitions, 110 flow [2024-10-13 07:04:51,098 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=110, PETRI_PLACES=57, PETRI_TRANSITIONS=35} [2024-10-13 07:04:51,099 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 12 predicate places. [2024-10-13 07:04:51,099 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 35 transitions, 110 flow [2024-10-13 07:04:51,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:04:51,100 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:04:51,100 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:04:51,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 07:04:51,100 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-10-13 07:04:51,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:04:51,101 INFO L85 PathProgramCache]: Analyzing trace with hash 2094049017, now seen corresponding path program 1 times [2024-10-13 07:04:51,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:04:51,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334878305] [2024-10-13 07:04:51,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:04:51,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:04:51,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:04:51,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:04:51,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:04:51,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334878305] [2024-10-13 07:04:51,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334878305] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:04:51,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:04:51,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 07:04:51,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931013325] [2024-10-13 07:04:51,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:04:51,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 07:04:51,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:04:51,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 07:04:51,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 07:04:51,217 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-10-13 07:04:51,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 35 transitions, 110 flow. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:04:51,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:04:51,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-10-13 07:04:51,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:04:51,342 INFO L124 PetriNetUnfolderBase]: 116/296 cut-off events. [2024-10-13 07:04:51,342 INFO L125 PetriNetUnfolderBase]: For 212/212 co-relation queries the response was YES. [2024-10-13 07:04:51,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 745 conditions, 296 events. 116/296 cut-off events. For 212/212 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1180 event pairs, 55 based on Foata normal form. 11/305 useless extension candidates. Maximal degree in co-relation 723. Up to 178 conditions per place. [2024-10-13 07:04:51,348 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 40 selfloop transitions, 7 changer transitions 0/55 dead transitions. [2024-10-13 07:04:51,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 55 transitions, 272 flow [2024-10-13 07:04:51,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:04:51,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:04:51,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-10-13 07:04:51,350 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44074074074074077 [2024-10-13 07:04:51,350 INFO L175 Difference]: Start difference. First operand has 57 places, 35 transitions, 110 flow. Second operand 5 states and 119 transitions. [2024-10-13 07:04:51,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 55 transitions, 272 flow [2024-10-13 07:04:51,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 55 transitions, 212 flow, removed 10 selfloop flow, removed 13 redundant places. [2024-10-13 07:04:51,355 INFO L231 Difference]: Finished difference. Result has 47 places, 39 transitions, 122 flow [2024-10-13 07:04:51,355 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=122, PETRI_PLACES=47, PETRI_TRANSITIONS=39} [2024-10-13 07:04:51,356 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 2 predicate places. [2024-10-13 07:04:51,356 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 39 transitions, 122 flow [2024-10-13 07:04:51,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:04:51,356 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:04:51,357 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] [2024-10-13 07:04:51,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 07:04:51,357 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-10-13 07:04:51,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:04:51,357 INFO L85 PathProgramCache]: Analyzing trace with hash 629815489, now seen corresponding path program 1 times [2024-10-13 07:04:51,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:04:51,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270815972] [2024-10-13 07:04:51,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:04:51,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:04:51,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:04:51,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:04:51,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:04:51,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270815972] [2024-10-13 07:04:51,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270815972] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:04:51,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:04:51,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 07:04:51,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651297786] [2024-10-13 07:04:51,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:04:51,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 07:04:51,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:04:51,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 07:04:51,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 07:04:51,485 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-10-13 07:04:51,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 39 transitions, 122 flow. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:04:51,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:04:51,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-10-13 07:04:51,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:04:51,612 INFO L124 PetriNetUnfolderBase]: 109/275 cut-off events. [2024-10-13 07:04:51,614 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2024-10-13 07:04:51,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 635 conditions, 275 events. 109/275 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1050 event pairs, 41 based on Foata normal form. 8/281 useless extension candidates. Maximal degree in co-relation 620. Up to 146 conditions per place. [2024-10-13 07:04:51,616 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 39 selfloop transitions, 10 changer transitions 0/56 dead transitions. [2024-10-13 07:04:51,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 56 transitions, 264 flow [2024-10-13 07:04:51,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 07:04:51,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 07:04:51,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 131 transitions. [2024-10-13 07:04:51,621 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.404320987654321 [2024-10-13 07:04:51,621 INFO L175 Difference]: Start difference. First operand has 47 places, 39 transitions, 122 flow. Second operand 6 states and 131 transitions. [2024-10-13 07:04:51,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 56 transitions, 264 flow [2024-10-13 07:04:51,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 56 transitions, 254 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-13 07:04:51,624 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 139 flow [2024-10-13 07:04:51,625 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=139, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2024-10-13 07:04:51,626 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 3 predicate places. [2024-10-13 07:04:51,627 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 139 flow [2024-10-13 07:04:51,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:04:51,628 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:04:51,628 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] [2024-10-13 07:04:51,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 07:04:51,628 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-10-13 07:04:51,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:04:51,629 INFO L85 PathProgramCache]: Analyzing trace with hash -931608547, now seen corresponding path program 1 times [2024-10-13 07:04:51,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:04:51,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220698682] [2024-10-13 07:04:51,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:04:51,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:04:51,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:04:51,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:04:51,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:04:51,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220698682] [2024-10-13 07:04:51,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220698682] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:04:51,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:04:51,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 07:04:51,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869286340] [2024-10-13 07:04:51,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:04:51,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 07:04:51,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:04:51,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 07:04:51,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 07:04:51,759 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 54 [2024-10-13 07:04:51,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 139 flow. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:04:51,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:04:51,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 54 [2024-10-13 07:04:51,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:04:51,858 INFO L124 PetriNetUnfolderBase]: 67/207 cut-off events. [2024-10-13 07:04:51,858 INFO L125 PetriNetUnfolderBase]: For 82/82 co-relation queries the response was YES. [2024-10-13 07:04:51,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 487 conditions, 207 events. 67/207 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 751 event pairs, 22 based on Foata normal form. 10/215 useless extension candidates. Maximal degree in co-relation 472. Up to 90 conditions per place. [2024-10-13 07:04:51,860 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 37 selfloop transitions, 7 changer transitions 2/56 dead transitions. [2024-10-13 07:04:51,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 56 transitions, 287 flow [2024-10-13 07:04:51,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 07:04:51,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 07:04:51,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 121 transitions. [2024-10-13 07:04:51,862 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5601851851851852 [2024-10-13 07:04:51,862 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 139 flow. Second operand 4 states and 121 transitions. [2024-10-13 07:04:51,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 56 transitions, 287 flow [2024-10-13 07:04:51,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 56 transitions, 278 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-10-13 07:04:51,867 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 154 flow [2024-10-13 07:04:51,867 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=51, PETRI_TRANSITIONS=40} [2024-10-13 07:04:51,868 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 6 predicate places. [2024-10-13 07:04:51,868 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 154 flow [2024-10-13 07:04:51,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:04:51,868 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:04:51,869 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:04:51,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 07:04:51,869 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-10-13 07:04:51,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:04:51,870 INFO L85 PathProgramCache]: Analyzing trace with hash -2021627998, now seen corresponding path program 1 times [2024-10-13 07:04:51,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:04:51,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890015275] [2024-10-13 07:04:51,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:04:51,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:04:51,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:04:51,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:04:51,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:04:51,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890015275] [2024-10-13 07:04:52,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890015275] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:04:52,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:04:52,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 07:04:52,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254652229] [2024-10-13 07:04:52,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:04:52,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 07:04:52,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:04:52,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 07:04:52,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-13 07:04:52,002 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 54 [2024-10-13 07:04:52,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 40 transitions, 154 flow. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:04:52,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:04:52,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 54 [2024-10-13 07:04:52,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:04:52,093 INFO L124 PetriNetUnfolderBase]: 66/213 cut-off events. [2024-10-13 07:04:52,094 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2024-10-13 07:04:52,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 530 conditions, 213 events. 66/213 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 758 event pairs, 29 based on Foata normal form. 2/213 useless extension candidates. Maximal degree in co-relation 513. Up to 100 conditions per place. [2024-10-13 07:04:52,095 INFO L140 encePairwiseOnDemand]: 49/54 looper letters, 34 selfloop transitions, 5 changer transitions 3/51 dead transitions. [2024-10-13 07:04:52,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 51 transitions, 275 flow [2024-10-13 07:04:52,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 07:04:52,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 07:04:52,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-10-13 07:04:52,097 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5370370370370371 [2024-10-13 07:04:52,097 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 154 flow. Second operand 4 states and 116 transitions. [2024-10-13 07:04:52,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 51 transitions, 275 flow [2024-10-13 07:04:52,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 51 transitions, 274 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 07:04:52,100 INFO L231 Difference]: Finished difference. Result has 54 places, 38 transitions, 156 flow [2024-10-13 07:04:52,100 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=54, PETRI_TRANSITIONS=38} [2024-10-13 07:04:52,101 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 9 predicate places. [2024-10-13 07:04:52,101 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 38 transitions, 156 flow [2024-10-13 07:04:52,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:04:52,102 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:04:52,102 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, 1, 1, 1, 1, 1, 1] [2024-10-13 07:04:52,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 07:04:52,102 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-10-13 07:04:52,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:04:52,103 INFO L85 PathProgramCache]: Analyzing trace with hash -126409677, now seen corresponding path program 1 times [2024-10-13 07:04:52,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:04:52,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911417955] [2024-10-13 07:04:52,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:04:52,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:04:52,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:04:52,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:04:52,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:04:52,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911417955] [2024-10-13 07:04:52,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911417955] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:04:52,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:04:52,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 07:04:52,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27286080] [2024-10-13 07:04:52,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:04:52,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 07:04:52,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:04:52,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 07:04:52,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-13 07:04:52,242 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-10-13 07:04:52,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 38 transitions, 156 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:04:52,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:04:52,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-10-13 07:04:52,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:04:52,401 INFO L124 PetriNetUnfolderBase]: 74/204 cut-off events. [2024-10-13 07:04:52,401 INFO L125 PetriNetUnfolderBase]: For 119/119 co-relation queries the response was YES. [2024-10-13 07:04:52,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 580 conditions, 204 events. 74/204 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 677 event pairs, 14 based on Foata normal form. 12/214 useless extension candidates. Maximal degree in co-relation 561. Up to 47 conditions per place. [2024-10-13 07:04:52,402 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 0 selfloop transitions, 0 changer transitions 58/58 dead transitions. [2024-10-13 07:04:52,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 58 transitions, 338 flow [2024-10-13 07:04:52,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 07:04:52,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 07:04:52,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-10-13 07:04:52,404 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36213991769547327 [2024-10-13 07:04:52,405 INFO L175 Difference]: Start difference. First operand has 54 places, 38 transitions, 156 flow. Second operand 9 states and 176 transitions. [2024-10-13 07:04:52,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 58 transitions, 338 flow [2024-10-13 07:04:52,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 58 transitions, 319 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 07:04:52,407 INFO L231 Difference]: Finished difference. Result has 54 places, 0 transitions, 0 flow [2024-10-13 07:04:52,407 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=54, PETRI_TRANSITIONS=0} [2024-10-13 07:04:52,408 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 9 predicate places. [2024-10-13 07:04:52,408 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 0 transitions, 0 flow [2024-10-13 07:04:52,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:04:52,414 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-10-13 07:04:52,415 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2024-10-13 07:04:52,415 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2024-10-13 07:04:52,415 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2024-10-13 07:04:52,416 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2024-10-13 07:04:52,416 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2024-10-13 07:04:52,416 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2024-10-13 07:04:52,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 07:04:52,417 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:04:52,423 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-13 07:04:52,424 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-13 07:04:52,431 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:04:52 BasicIcfg [2024-10-13 07:04:52,431 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-13 07:04:52,432 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-13 07:04:52,432 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-13 07:04:52,432 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-13 07:04:52,433 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:04:49" (3/4) ... [2024-10-13 07:04:52,434 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-13 07:04:52,437 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-10-13 07:04:52,442 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 46 nodes and edges [2024-10-13 07:04:52,443 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2024-10-13 07:04:52,443 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-10-13 07:04:52,444 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-13 07:04:52,528 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-13 07:04:52,530 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-13 07:04:52,531 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-13 07:04:52,531 INFO L158 Benchmark]: Toolchain (without parser) took 4643.07ms. Allocated memory was 176.2MB in the beginning and 237.0MB in the end (delta: 60.8MB). Free memory was 116.8MB in the beginning and 80.0MB in the end (delta: 36.9MB). Peak memory consumption was 99.7MB. Max. memory is 16.1GB. [2024-10-13 07:04:52,531 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 176.2MB. Free memory is still 137.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 07:04:52,532 INFO L158 Benchmark]: CACSL2BoogieTranslator took 554.98ms. Allocated memory is still 176.2MB. Free memory was 116.2MB in the beginning and 94.0MB in the end (delta: 22.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-10-13 07:04:52,532 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.19ms. Allocated memory is still 176.2MB. Free memory was 94.0MB in the beginning and 91.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 07:04:52,532 INFO L158 Benchmark]: Boogie Preprocessor took 72.48ms. Allocated memory is still 176.2MB. Free memory was 91.6MB in the beginning and 88.9MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-13 07:04:52,532 INFO L158 Benchmark]: RCFGBuilder took 814.34ms. Allocated memory was 176.2MB in the beginning and 237.0MB in the end (delta: 60.8MB). Free memory was 88.9MB in the beginning and 171.3MB in the end (delta: -82.3MB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB. [2024-10-13 07:04:52,533 INFO L158 Benchmark]: TraceAbstraction took 3046.30ms. Allocated memory is still 237.0MB. Free memory was 171.3MB in the beginning and 84.2MB in the end (delta: 87.1MB). Peak memory consumption was 86.0MB. Max. memory is 16.1GB. [2024-10-13 07:04:52,533 INFO L158 Benchmark]: Witness Printer took 98.72ms. Allocated memory is still 237.0MB. Free memory was 84.2MB in the beginning and 80.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-13 07:04:52,535 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 176.2MB. Free memory is still 137.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 554.98ms. Allocated memory is still 176.2MB. Free memory was 116.2MB in the beginning and 94.0MB in the end (delta: 22.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.19ms. Allocated memory is still 176.2MB. Free memory was 94.0MB in the beginning and 91.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 72.48ms. Allocated memory is still 176.2MB. Free memory was 91.6MB in the beginning and 88.9MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 814.34ms. Allocated memory was 176.2MB in the beginning and 237.0MB in the end (delta: 60.8MB). Free memory was 88.9MB in the beginning and 171.3MB in the end (delta: -82.3MB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB. * TraceAbstraction took 3046.30ms. Allocated memory is still 237.0MB. Free memory was 171.3MB in the beginning and 84.2MB in the end (delta: 87.1MB). Peak memory consumption was 86.0MB. Max. memory is 16.1GB. * Witness Printer took 98.72ms. Allocated memory is still 237.0MB. Free memory was 84.2MB in the beginning and 80.0MB 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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 79 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: 2.9s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 342 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 314 mSDsluCounter, 90 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 78 mSDsCounter, 50 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 723 IncrementalHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 50 mSolverCounterUnsat, 12 mSDtfsCounter, 723 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=156occurred in iteration=6, InterpolantAutomatonStates: 41, 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, 1.0s InterpolantComputationTime, 130 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 123 ConstructedInterpolants, 0 QuantifiedInterpolants, 476 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-13 07:04:52,560 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