./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-ext/03_incdec.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/pthread-ext/03_incdec.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 c7242322569cf2f27ee72f2a65e0d58ced23407c575f0c8898b19424239a034d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 10:08:55,430 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 10:08:55,484 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-10 10:08:55,488 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 10:08:55,489 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 10:08:55,511 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 10:08:55,512 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 10:08:55,513 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 10:08:55,513 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 10:08:55,514 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 10:08:55,515 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 10:08:55,515 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 10:08:55,515 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 10:08:55,517 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 10:08:55,517 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 10:08:55,517 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 10:08:55,517 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 10:08:55,517 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 10:08:55,518 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 10:08:55,518 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 10:08:55,518 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 10:08:55,520 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 10:08:55,520 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 10:08:55,520 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 10:08:55,520 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 10:08:55,520 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 10:08:55,521 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 10:08:55,521 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 10:08:55,521 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 10:08:55,521 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 10:08:55,521 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 10:08:55,521 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 10:08:55,521 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:08:55,522 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 10:08:55,522 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 10:08:55,522 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 10:08:55,522 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 10:08:55,522 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 10:08:55,529 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 10:08:55,529 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 10:08:55,529 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 10:08:55,532 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 10:08:55,532 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7242322569cf2f27ee72f2a65e0d58ced23407c575f0c8898b19424239a034d [2024-11-10 10:08:55,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 10:08:55,754 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 10:08:55,756 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 10:08:55,757 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 10:08:55,757 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 10:08:55,758 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/03_incdec.i [2024-11-10 10:08:56,923 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 10:08:57,167 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 10:08:57,167 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/03_incdec.i [2024-11-10 10:08:57,182 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31d6b0c21/a4c3aba128104e7c8e134db8e047b558/FLAG721a5362d [2024-11-10 10:08:57,193 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31d6b0c21/a4c3aba128104e7c8e134db8e047b558 [2024-11-10 10:08:57,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 10:08:57,196 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 10:08:57,197 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 10:08:57,197 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 10:08:57,202 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 10:08:57,203 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:08:57" (1/1) ... [2024-11-10 10:08:57,204 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a68aa79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:57, skipping insertion in model container [2024-11-10 10:08:57,204 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:08:57" (1/1) ... [2024-11-10 10:08:57,239 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 10:08:57,494 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/03_incdec.i[30737,30750] [2024-11-10 10:08:57,500 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/03_incdec.i[31112,31125] [2024-11-10 10:08:57,508 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:08:57,522 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 10:08:57,560 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/03_incdec.i[30737,30750] [2024-11-10 10:08:57,562 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/03_incdec.i[31112,31125] [2024-11-10 10:08:57,564 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:08:57,595 INFO L204 MainTranslator]: Completed translation [2024-11-10 10:08:57,596 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:57 WrapperNode [2024-11-10 10:08:57,596 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 10:08:57,598 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 10:08:57,598 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 10:08:57,598 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 10:08:57,603 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:57" (1/1) ... [2024-11-10 10:08:57,616 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:57" (1/1) ... [2024-11-10 10:08:57,630 INFO L138 Inliner]: procedures = 164, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 96 [2024-11-10 10:08:57,631 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 10:08:57,631 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 10:08:57,632 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 10:08:57,632 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 10:08:57,640 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:57" (1/1) ... [2024-11-10 10:08:57,640 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:57" (1/1) ... [2024-11-10 10:08:57,642 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:57" (1/1) ... [2024-11-10 10:08:57,653 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]. [2024-11-10 10:08:57,654 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:57" (1/1) ... [2024-11-10 10:08:57,654 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:57" (1/1) ... [2024-11-10 10:08:57,657 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:57" (1/1) ... [2024-11-10 10:08:57,657 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:57" (1/1) ... [2024-11-10 10:08:57,658 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:57" (1/1) ... [2024-11-10 10:08:57,659 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:57" (1/1) ... [2024-11-10 10:08:57,660 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 10:08:57,661 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 10:08:57,661 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 10:08:57,661 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 10:08:57,662 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:57" (1/1) ... [2024-11-10 10:08:57,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:08:57,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:08:57,697 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) [2024-11-10 10:08:57,702 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 [2024-11-10 10:08:57,741 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-10 10:08:57,741 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-10 10:08:57,741 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-10 10:08:57,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 10:08:57,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 10:08:57,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 10:08:57,742 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-10 10:08:57,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 10:08:57,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 10:08:57,745 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 10:08:57,859 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 10:08:57,861 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 10:08:58,020 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 10:08:58,021 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 10:08:58,097 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 10:08:58,097 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 10:08:58,097 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:08:58 BoogieIcfgContainer [2024-11-10 10:08:58,098 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 10:08:58,099 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 10:08:58,099 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 10:08:58,102 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 10:08:58,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:08:57" (1/3) ... [2024-11-10 10:08:58,104 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b45dbaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:08:58, skipping insertion in model container [2024-11-10 10:08:58,104 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:57" (2/3) ... [2024-11-10 10:08:58,104 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b45dbaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:08:58, skipping insertion in model container [2024-11-10 10:08:58,104 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:08:58" (3/3) ... [2024-11-10 10:08:58,105 INFO L112 eAbstractionObserver]: Analyzing ICFG 03_incdec.i [2024-11-10 10:08:58,121 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 10:08:58,121 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-10 10:08:58,122 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 10:08:58,183 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 10:08:58,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 47 transitions, 98 flow [2024-11-10 10:08:58,238 INFO L124 PetriNetUnfolderBase]: 7/52 cut-off events. [2024-11-10 10:08:58,238 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 10:08:58,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 52 events. 7/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 107 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 44. Up to 4 conditions per place. [2024-11-10 10:08:58,241 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 47 transitions, 98 flow [2024-11-10 10:08:58,244 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 47 transitions, 98 flow [2024-11-10 10:08:58,253 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:08:58,260 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;@2765124c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:08:58,260 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-10 10:08:58,266 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:08:58,266 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2024-11-10 10:08:58,266 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 10:08:58,266 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:08:58,267 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-10 10:08:58,267 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:08:58,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:08:58,271 INFO L85 PathProgramCache]: Analyzing trace with hash -803471007, now seen corresponding path program 1 times [2024-11-10 10:08:58,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:08:58,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407923981] [2024-11-10 10:08:58,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:08:58,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:08:58,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:08:58,362 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 10:08:58,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:08:58,401 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 10:08:58,404 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 10:08:58,405 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-10 10:08:58,407 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-11-10 10:08:58,408 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-11-10 10:08:58,409 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-11-10 10:08:58,409 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-11-10 10:08:58,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 10:08:58,410 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-10 10:08:58,412 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 10:08:58,412 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-10 10:08:58,476 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 10:08:58,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 86 transitions, 182 flow [2024-11-10 10:08:58,507 INFO L124 PetriNetUnfolderBase]: 13/97 cut-off events. [2024-11-10 10:08:58,508 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 10:08:58,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 97 events. 13/97 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 322 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 82. Up to 6 conditions per place. [2024-11-10 10:08:58,510 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 86 transitions, 182 flow [2024-11-10 10:08:58,512 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 86 transitions, 182 flow [2024-11-10 10:08:58,515 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:08:58,516 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;@2765124c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:08:58,516 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-10 10:08:58,523 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:08:58,523 INFO L124 PetriNetUnfolderBase]: 4/45 cut-off events. [2024-11-10 10:08:58,523 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 10:08:58,523 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:08:58,523 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1] [2024-11-10 10:08:58,524 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-10 10:08:58,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:08:58,524 INFO L85 PathProgramCache]: Analyzing trace with hash 924098719, now seen corresponding path program 1 times [2024-11-10 10:08:58,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:08:58,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750391124] [2024-11-10 10:08:58,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:08:58,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:08:58,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:08:58,543 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 10:08:58,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:08:58,564 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 10:08:58,564 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 10:08:58,565 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-10 10:08:58,565 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2024-11-10 10:08:58,565 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2024-11-10 10:08:58,565 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2024-11-10 10:08:58,566 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2024-11-10 10:08:58,566 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2024-11-10 10:08:58,566 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2024-11-10 10:08:58,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 10:08:58,566 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-10 10:08:58,567 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 10:08:58,567 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-10 10:08:58,610 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 10:08:58,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 125 transitions, 268 flow [2024-11-10 10:08:58,643 INFO L124 PetriNetUnfolderBase]: 19/142 cut-off events. [2024-11-10 10:08:58,644 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-10 10:08:58,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 142 events. 19/142 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 558 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 120. Up to 8 conditions per place. [2024-11-10 10:08:58,645 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 125 transitions, 268 flow [2024-11-10 10:08:58,647 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 116 places, 125 transitions, 268 flow [2024-11-10 10:08:58,648 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:08:58,649 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;@2765124c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:08:58,649 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-11-10 10:08:58,658 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:08:58,658 INFO L124 PetriNetUnfolderBase]: 8/77 cut-off events. [2024-11-10 10:08:58,658 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-10 10:08:58,659 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:08:58,659 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:08:58,659 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-10 10:08:58,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:08:58,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1409793287, now seen corresponding path program 1 times [2024-11-10 10:08:58,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:08:58,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728182474] [2024-11-10 10:08:58,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:08:58,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:08:58,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:08:58,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:08:58,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:08:58,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728182474] [2024-11-10 10:08:58,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728182474] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:08:58,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:08:58,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:08:58,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579247366] [2024-11-10 10:08:58,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:08:58,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:08:58,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:08:58,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:08:58,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 10:08:58,894 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 125 [2024-11-10 10:08:58,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 125 transitions, 268 flow. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 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) [2024-11-10 10:08:58,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:08:58,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 125 [2024-11-10 10:08:58,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:09:06,650 INFO L124 PetriNetUnfolderBase]: 84265/130229 cut-off events. [2024-11-10 10:09:06,650 INFO L125 PetriNetUnfolderBase]: For 2621/2621 co-relation queries the response was YES. [2024-11-10 10:09:06,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246815 conditions, 130229 events. 84265/130229 cut-off events. For 2621/2621 co-relation queries the response was YES. Maximal size of possible extension queue 5156. Compared 1157344 event pairs, 31104 based on Foata normal form. 18823/141255 useless extension candidates. Maximal degree in co-relation 47674. Up to 103910 conditions per place. [2024-11-10 10:09:07,511 INFO L140 encePairwiseOnDemand]: 107/125 looper letters, 111 selfloop transitions, 4 changer transitions 0/150 dead transitions. [2024-11-10 10:09:07,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 150 transitions, 560 flow [2024-11-10 10:09:07,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 10:09:07,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 10:09:07,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 236 transitions. [2024-11-10 10:09:07,524 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6293333333333333 [2024-11-10 10:09:07,526 INFO L175 Difference]: Start difference. First operand has 116 places, 125 transitions, 268 flow. Second operand 3 states and 236 transitions. [2024-11-10 10:09:07,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 150 transitions, 560 flow [2024-11-10 10:09:07,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 150 transitions, 556 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-11-10 10:09:07,538 INFO L231 Difference]: Finished difference. Result has 117 places, 119 transitions, 284 flow [2024-11-10 10:09:07,540 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=284, PETRI_PLACES=117, PETRI_TRANSITIONS=119} [2024-11-10 10:09:07,546 INFO L277 CegarLoopForPetriNet]: 116 programPoint places, 1 predicate places. [2024-11-10 10:09:07,546 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 119 transitions, 284 flow [2024-11-10 10:09:07,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 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) [2024-11-10 10:09:07,547 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:09:07,547 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:09:07,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 10:09:07,548 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-10 10:09:07,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:09:07,549 INFO L85 PathProgramCache]: Analyzing trace with hash 163222394, now seen corresponding path program 1 times [2024-11-10 10:09:07,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:09:07,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63661460] [2024-11-10 10:09:07,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:09:07,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:09:07,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:09:07,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:09:07,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:09:07,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63661460] [2024-11-10 10:09:07,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63661460] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:09:07,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:09:07,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 10:09:07,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622369523] [2024-11-10 10:09:07,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:09:07,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:09:07,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:09:07,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:09:07,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 10:09:07,760 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 125 [2024-11-10 10:09:07,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 119 transitions, 284 flow. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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) [2024-11-10 10:09:07,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:09:07,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 125 [2024-11-10 10:09:07,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:09:16,360 INFO L124 PetriNetUnfolderBase]: 103927/160198 cut-off events. [2024-11-10 10:09:16,360 INFO L125 PetriNetUnfolderBase]: For 8211/8211 co-relation queries the response was YES. [2024-11-10 10:09:16,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315614 conditions, 160198 events. 103927/160198 cut-off events. For 8211/8211 co-relation queries the response was YES. Maximal size of possible extension queue 6219. Compared 1445152 event pairs, 34199 based on Foata normal form. 1728/153232 useless extension candidates. Maximal degree in co-relation 163700. Up to 107567 conditions per place. [2024-11-10 10:09:17,449 INFO L140 encePairwiseOnDemand]: 115/125 looper letters, 163 selfloop transitions, 7 changer transitions 0/202 dead transitions. [2024-11-10 10:09:17,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 202 transitions, 822 flow [2024-11-10 10:09:17,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 10:09:17,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 10:09:17,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 301 transitions. [2024-11-10 10:09:17,456 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.602 [2024-11-10 10:09:17,457 INFO L175 Difference]: Start difference. First operand has 117 places, 119 transitions, 284 flow. Second operand 4 states and 301 transitions. [2024-11-10 10:09:17,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 202 transitions, 822 flow [2024-11-10 10:09:17,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 202 transitions, 818 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 10:09:17,468 INFO L231 Difference]: Finished difference. Result has 120 places, 122 transitions, 320 flow [2024-11-10 10:09:17,468 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=320, PETRI_PLACES=120, PETRI_TRANSITIONS=122} [2024-11-10 10:09:17,469 INFO L277 CegarLoopForPetriNet]: 116 programPoint places, 4 predicate places. [2024-11-10 10:09:17,470 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 122 transitions, 320 flow [2024-11-10 10:09:17,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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) [2024-11-10 10:09:17,470 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:09:17,470 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1] [2024-11-10 10:09:17,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 10:09:17,471 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-10 10:09:17,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:09:17,471 INFO L85 PathProgramCache]: Analyzing trace with hash 553980330, now seen corresponding path program 1 times [2024-11-10 10:09:17,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:09:17,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223450912] [2024-11-10 10:09:17,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:09:17,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:09:17,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:09:17,484 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 10:09:17,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:09:17,496 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 10:09:17,499 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 10:09:17,499 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2024-11-10 10:09:17,499 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (7 of 9 remaining) [2024-11-10 10:09:17,500 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 9 remaining) [2024-11-10 10:09:17,500 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (5 of 9 remaining) [2024-11-10 10:09:17,500 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 9 remaining) [2024-11-10 10:09:17,500 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 9 remaining) [2024-11-10 10:09:17,500 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 9 remaining) [2024-11-10 10:09:17,500 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (1 of 9 remaining) [2024-11-10 10:09:17,500 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 9 remaining) [2024-11-10 10:09:17,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 10:09:17,501 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-10 10:09:17,501 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 10:09:17,501 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-10 10:09:17,554 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 10:09:17,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 164 transitions, 356 flow [2024-11-10 10:09:17,576 INFO L124 PetriNetUnfolderBase]: 25/187 cut-off events. [2024-11-10 10:09:17,577 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-10 10:09:17,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 187 events. 25/187 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 783 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 158. Up to 10 conditions per place. [2024-11-10 10:09:17,578 INFO L82 GeneralOperation]: Start removeDead. Operand has 152 places, 164 transitions, 356 flow [2024-11-10 10:09:17,581 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 152 places, 164 transitions, 356 flow [2024-11-10 10:09:17,582 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:09:17,583 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;@2765124c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:09:17,585 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-11-10 10:09:17,590 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:09:17,592 INFO L124 PetriNetUnfolderBase]: 8/77 cut-off events. [2024-11-10 10:09:17,592 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-10 10:09:17,592 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:09:17,592 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:09:17,592 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2024-11-10 10:09:17,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:09:17,593 INFO L85 PathProgramCache]: Analyzing trace with hash 581603485, now seen corresponding path program 1 times [2024-11-10 10:09:17,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:09:17,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864666398] [2024-11-10 10:09:17,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:09:17,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:09:17,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:09:17,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:09:17,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:09:17,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864666398] [2024-11-10 10:09:17,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864666398] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:09:17,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:09:17,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:09:17,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958190593] [2024-11-10 10:09:17,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:09:17,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:09:17,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:09:17,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:09:17,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 10:09:17,687 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 164 [2024-11-10 10:09:17,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 164 transitions, 356 flow. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2024-11-10 10:09:17,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:09:17,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 164 [2024-11-10 10:09:17,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand