./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe037.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-wmm/safe037.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 8e4a27807726d35f891e97d8bb2a7e6664171035f3f5de29d992fc7dfa583447 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 10:20:10,694 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 10:20:10,752 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-10 10:20:10,764 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 10:20:10,765 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 10:20:10,791 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 10:20:10,791 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 10:20:10,791 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 10:20:10,792 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 10:20:10,792 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 10:20:10,792 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 10:20:10,794 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 10:20:10,795 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 10:20:10,796 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 10:20:10,796 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 10:20:10,796 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 10:20:10,796 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 10:20:10,797 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 10:20:10,797 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 10:20:10,797 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 10:20:10,797 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 10:20:10,801 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 10:20:10,802 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 10:20:10,802 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 10:20:10,802 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 10:20:10,802 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 10:20:10,802 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 10:20:10,802 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 10:20:10,802 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 10:20:10,803 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 10:20:10,803 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 10:20:10,803 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 10:20:10,803 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:20:10,804 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 10:20:10,804 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 10:20:10,804 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 10:20:10,804 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 10:20:10,804 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 10:20:10,804 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 10:20:10,804 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 10:20:10,804 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 10:20:10,805 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 10:20:10,805 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e4a27807726d35f891e97d8bb2a7e6664171035f3f5de29d992fc7dfa583447 [2024-11-10 10:20:11,014 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 10:20:11,042 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 10:20:11,045 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 10:20:11,046 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 10:20:11,047 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 10:20:11,047 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe037.i [2024-11-10 10:20:12,426 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 10:20:12,693 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 10:20:12,694 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe037.i [2024-11-10 10:20:12,705 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22f08617b/8e66c6606eb544a2a5354bca69acb5ae/FLAGb1666d19a [2024-11-10 10:20:13,011 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22f08617b/8e66c6606eb544a2a5354bca69acb5ae [2024-11-10 10:20:13,013 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 10:20:13,014 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 10:20:13,015 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 10:20:13,015 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 10:20:13,020 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 10:20:13,020 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:20:13" (1/1) ... [2024-11-10 10:20:13,021 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6901fd56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:20:13, skipping insertion in model container [2024-11-10 10:20:13,021 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:20:13" (1/1) ... [2024-11-10 10:20:13,056 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 10:20:13,217 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-wmm/safe037.i[941,954] [2024-11-10 10:20:13,317 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:20:13,329 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 10:20:13,339 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-wmm/safe037.i[941,954] [2024-11-10 10:20:13,363 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:20:13,418 INFO L204 MainTranslator]: Completed translation [2024-11-10 10:20:13,424 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:20:13 WrapperNode [2024-11-10 10:20:13,424 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 10:20:13,426 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 10:20:13,426 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 10:20:13,426 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 10:20:13,440 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:20:13" (1/1) ... [2024-11-10 10:20:13,500 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:20:13" (1/1) ... [2024-11-10 10:20:13,527 INFO L138 Inliner]: procedures = 175, calls = 47, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 59 [2024-11-10 10:20:13,528 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 10:20:13,529 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 10:20:13,529 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 10:20:13,529 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 10:20:13,536 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:20:13" (1/1) ... [2024-11-10 10:20:13,536 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:20:13" (1/1) ... [2024-11-10 10:20:13,539 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:20:13" (1/1) ... [2024-11-10 10:20:13,554 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-10 10:20:13,555 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:20:13" (1/1) ... [2024-11-10 10:20:13,555 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:20:13" (1/1) ... [2024-11-10 10:20:13,563 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:20:13" (1/1) ... [2024-11-10 10:20:13,563 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:20:13" (1/1) ... [2024-11-10 10:20:13,567 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:20:13" (1/1) ... [2024-11-10 10:20:13,568 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:20:13" (1/1) ... [2024-11-10 10:20:13,570 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 10:20:13,574 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 10:20:13,574 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 10:20:13,574 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 10:20:13,575 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:20:13" (1/1) ... [2024-11-10 10:20:13,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:20:13,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:20:13,612 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 10:20:13,615 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 10:20:13,656 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-10 10:20:13,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 10:20:13,657 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-11-10 10:20:13,657 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-11-10 10:20:13,657 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-11-10 10:20:13,657 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-11-10 10:20:13,657 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-11-10 10:20:13,657 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-11-10 10:20:13,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 10:20:13,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-10 10:20:13,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 10:20:13,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 10:20:13,660 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 10:20:13,782 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 10:20:13,788 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 10:20:13,953 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 10:20:13,954 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 10:20:14,032 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 10:20:14,033 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 10:20:14,034 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:20:14 BoogieIcfgContainer [2024-11-10 10:20:14,034 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 10:20:14,036 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 10:20:14,036 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 10:20:14,039 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 10:20:14,040 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:20:13" (1/3) ... [2024-11-10 10:20:14,041 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51d1821c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:20:14, skipping insertion in model container [2024-11-10 10:20:14,041 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:20:13" (2/3) ... [2024-11-10 10:20:14,041 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51d1821c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:20:14, skipping insertion in model container [2024-11-10 10:20:14,041 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:20:14" (3/3) ... [2024-11-10 10:20:14,043 INFO L112 eAbstractionObserver]: Analyzing ICFG safe037.i [2024-11-10 10:20:14,056 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 10:20:14,057 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-10 10:20:14,057 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 10:20:14,088 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 10:20:14,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 41 transitions, 94 flow [2024-11-10 10:20:14,133 INFO L124 PetriNetUnfolderBase]: 1/38 cut-off events. [2024-11-10 10:20:14,133 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 10:20:14,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 38 events. 1/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 71 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 40. Up to 2 conditions per place. [2024-11-10 10:20:14,136 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 41 transitions, 94 flow [2024-11-10 10:20:14,138 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 35 transitions, 79 flow [2024-11-10 10:20:14,144 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:20:14,150 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;@161698f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:20:14,150 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-10 10:20:14,158 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:20:14,159 INFO L124 PetriNetUnfolderBase]: 0/34 cut-off events. [2024-11-10 10:20:14,159 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 10:20:14,159 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:20:14,160 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:20:14,160 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:20:14,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:20:14,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1609400279, now seen corresponding path program 1 times [2024-11-10 10:20:14,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:20:14,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393278774] [2024-11-10 10:20:14,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:20:14,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:20:14,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:20:14,496 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 10:20:14,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:20:14,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393278774] [2024-11-10 10:20:14,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393278774] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:20:14,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:20:14,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 10:20:14,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69727926] [2024-11-10 10:20:14,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:20:14,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:20:14,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:20:14,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:20:14,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 10:20:14,537 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-11-10 10:20:14,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 35 transitions, 79 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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 10:20:14,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:20:14,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-11-10 10:20:14,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:20:15,214 INFO L124 PetriNetUnfolderBase]: 5308/7985 cut-off events. [2024-11-10 10:20:15,215 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-11-10 10:20:15,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15862 conditions, 7985 events. 5308/7985 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 44399 event pairs, 994 based on Foata normal form. 343/8322 useless extension candidates. Maximal degree in co-relation 15851. Up to 4351 conditions per place. [2024-11-10 10:20:15,255 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 64 selfloop transitions, 5 changer transitions 1/74 dead transitions. [2024-11-10 10:20:15,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 74 transitions, 303 flow [2024-11-10 10:20:15,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 10:20:15,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 10:20:15,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2024-11-10 10:20:15,265 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6341463414634146 [2024-11-10 10:20:15,267 INFO L175 Difference]: Start difference. First operand has 45 places, 35 transitions, 79 flow. Second operand 4 states and 104 transitions. [2024-11-10 10:20:15,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 74 transitions, 303 flow [2024-11-10 10:20:15,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 74 transitions, 298 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 10:20:15,272 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 110 flow [2024-11-10 10:20:15,274 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=110, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2024-11-10 10:20:15,277 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 2 predicate places. [2024-11-10 10:20:15,277 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 110 flow [2024-11-10 10:20:15,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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 10:20:15,277 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:20:15,277 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] [2024-11-10 10:20:15,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 10:20:15,278 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:20:15,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:20:15,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1092234782, now seen corresponding path program 1 times [2024-11-10 10:20:15,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:20:15,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311945792] [2024-11-10 10:20:15,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:20:15,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:20:15,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:20:15,468 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 10:20:15,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:20:15,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311945792] [2024-11-10 10:20:15,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311945792] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:20:15,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:20:15,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:20:15,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830505226] [2024-11-10 10:20:15,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:20:15,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:20:15,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:20:15,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:20:15,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:20:15,472 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-11-10 10:20:15,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 110 flow. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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 10:20:15,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:20:15,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-11-10 10:20:15,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:20:15,910 INFO L124 PetriNetUnfolderBase]: 2833/4335 cut-off events. [2024-11-10 10:20:15,910 INFO L125 PetriNetUnfolderBase]: For 797/797 co-relation queries the response was YES. [2024-11-10 10:20:15,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9925 conditions, 4335 events. 2833/4335 cut-off events. For 797/797 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 21403 event pairs, 651 based on Foata normal form. 218/4547 useless extension candidates. Maximal degree in co-relation 9913. Up to 1515 conditions per place. [2024-11-10 10:20:15,925 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 82 selfloop transitions, 8 changer transitions 1/95 dead transitions. [2024-11-10 10:20:15,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 95 transitions, 427 flow [2024-11-10 10:20:15,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 10:20:15,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 10:20:15,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2024-11-10 10:20:15,927 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6487804878048781 [2024-11-10 10:20:15,928 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 110 flow. Second operand 5 states and 133 transitions. [2024-11-10 10:20:15,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 95 transitions, 427 flow [2024-11-10 10:20:15,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 95 transitions, 417 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-10 10:20:15,934 INFO L231 Difference]: Finished difference. Result has 51 places, 41 transitions, 150 flow [2024-11-10 10:20:15,934 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=150, PETRI_PLACES=51, PETRI_TRANSITIONS=41} [2024-11-10 10:20:15,935 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 6 predicate places. [2024-11-10 10:20:15,935 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 41 transitions, 150 flow [2024-11-10 10:20:15,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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 10:20:15,936 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:20:15,936 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] [2024-11-10 10:20:15,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 10:20:15,936 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:20:15,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:20:15,937 INFO L85 PathProgramCache]: Analyzing trace with hash 701323293, now seen corresponding path program 1 times [2024-11-10 10:20:15,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:20:15,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150722596] [2024-11-10 10:20:15,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:20:15,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:20:15,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:20:16,109 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 10:20:16,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:20:16,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150722596] [2024-11-10 10:20:16,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150722596] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:20:16,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:20:16,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:20:16,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723760495] [2024-11-10 10:20:16,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:20:16,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:20:16,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:20:16,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:20:16,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-10 10:20:16,112 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-11-10 10:20:16,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 150 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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 10:20:16,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:20:16,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-11-10 10:20:16,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:20:16,347 INFO L124 PetriNetUnfolderBase]: 1798/2730 cut-off events. [2024-11-10 10:20:16,348 INFO L125 PetriNetUnfolderBase]: For 1492/1492 co-relation queries the response was YES. [2024-11-10 10:20:16,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6697 conditions, 2730 events. 1798/2730 cut-off events. For 1492/1492 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 12428 event pairs, 594 based on Foata normal form. 68/2792 useless extension candidates. Maximal degree in co-relation 6683. Up to 1050 conditions per place. [2024-11-10 10:20:16,362 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 68 selfloop transitions, 11 changer transitions 1/84 dead transitions. [2024-11-10 10:20:16,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 84 transitions, 406 flow [2024-11-10 10:20:16,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:20:16,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:20:16,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-11-10 10:20:16,365 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5284552845528455 [2024-11-10 10:20:16,366 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 150 flow. Second operand 6 states and 130 transitions. [2024-11-10 10:20:16,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 84 transitions, 406 flow [2024-11-10 10:20:16,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 84 transitions, 381 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-10 10:20:16,380 INFO L231 Difference]: Finished difference. Result has 54 places, 41 transitions, 164 flow [2024-11-10 10:20:16,380 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=164, PETRI_PLACES=54, PETRI_TRANSITIONS=41} [2024-11-10 10:20:16,381 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 9 predicate places. [2024-11-10 10:20:16,381 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 41 transitions, 164 flow [2024-11-10 10:20:16,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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 10:20:16,382 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:20:16,382 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, 1, 1, 1, 1, 1] [2024-11-10 10:20:16,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 10:20:16,382 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:20:16,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:20:16,383 INFO L85 PathProgramCache]: Analyzing trace with hash 337523240, now seen corresponding path program 1 times [2024-11-10 10:20:16,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:20:16,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744982083] [2024-11-10 10:20:16,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:20:16,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:20:16,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:20:16,575 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 10:20:16,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:20:16,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744982083] [2024-11-10 10:20:16,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744982083] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:20:16,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:20:16,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-10 10:20:16,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458956374] [2024-11-10 10:20:16,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:20:16,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 10:20:16,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:20:16,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 10:20:16,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-10 10:20:16,585 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-11-10 10:20:16,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 41 transitions, 164 flow. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 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 10:20:16,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:20:16,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-11-10 10:20:16,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:20:16,951 INFO L124 PetriNetUnfolderBase]: 2462/3747 cut-off events. [2024-11-10 10:20:16,951 INFO L125 PetriNetUnfolderBase]: For 2418/2418 co-relation queries the response was YES. [2024-11-10 10:20:16,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9391 conditions, 3747 events. 2462/3747 cut-off events. For 2418/2418 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 18588 event pairs, 220 based on Foata normal form. 8/3753 useless extension candidates. Maximal degree in co-relation 9376. Up to 2154 conditions per place. [2024-11-10 10:20:16,966 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 50 selfloop transitions, 1 changer transitions 37/92 dead transitions. [2024-11-10 10:20:16,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 92 transitions, 542 flow [2024-11-10 10:20:16,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:20:16,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:20:16,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 123 transitions. [2024-11-10 10:20:16,970 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-10 10:20:16,970 INFO L175 Difference]: Start difference. First operand has 54 places, 41 transitions, 164 flow. Second operand 6 states and 123 transitions. [2024-11-10 10:20:16,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 92 transitions, 542 flow [2024-11-10 10:20:16,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 92 transitions, 417 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-11-10 10:20:16,988 INFO L231 Difference]: Finished difference. Result has 55 places, 41 transitions, 119 flow [2024-11-10 10:20:16,989 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=119, PETRI_PLACES=55, PETRI_TRANSITIONS=41} [2024-11-10 10:20:16,990 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 10 predicate places. [2024-11-10 10:20:16,990 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 41 transitions, 119 flow [2024-11-10 10:20:16,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 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 10:20:16,991 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:20:16,991 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, 1, 1, 1, 1, 1] [2024-11-10 10:20:16,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 10:20:16,992 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:20:16,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:20:16,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1595384994, now seen corresponding path program 2 times [2024-11-10 10:20:16,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:20:16,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30274758] [2024-11-10 10:20:16,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:20:16,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:20:17,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:20:17,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:20:17,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:20:17,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30274758] [2024-11-10 10:20:17,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30274758] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:20:17,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:20:17,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 10:20:17,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956405959] [2024-11-10 10:20:17,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:20:17,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:20:17,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:20:17,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:20:17,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-10 10:20:17,156 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-11-10 10:20:17,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 41 transitions, 119 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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 10:20:17,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:20:17,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-11-10 10:20:17,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:20:17,433 INFO L124 PetriNetUnfolderBase]: 2242/3482 cut-off events. [2024-11-10 10:20:17,433 INFO L125 PetriNetUnfolderBase]: For 586/586 co-relation queries the response was YES. [2024-11-10 10:20:17,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7751 conditions, 3482 events. 2242/3482 cut-off events. For 586/586 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 17077 event pairs, 304 based on Foata normal form. 8/3485 useless extension candidates. Maximal degree in co-relation 7737. Up to 1854 conditions per place. [2024-11-10 10:20:17,448 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 45 selfloop transitions, 1 changer transitions 37/87 dead transitions. [2024-11-10 10:20:17,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 87 transitions, 413 flow [2024-11-10 10:20:17,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:20:17,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:20:17,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 118 transitions. [2024-11-10 10:20:17,450 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4796747967479675 [2024-11-10 10:20:17,450 INFO L175 Difference]: Start difference. First operand has 55 places, 41 transitions, 119 flow. Second operand 6 states and 118 transitions. [2024-11-10 10:20:17,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 87 transitions, 413 flow [2024-11-10 10:20:17,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 87 transitions, 401 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-11-10 10:20:17,453 INFO L231 Difference]: Finished difference. Result has 57 places, 41 transitions, 123 flow [2024-11-10 10:20:17,454 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=123, PETRI_PLACES=57, PETRI_TRANSITIONS=41} [2024-11-10 10:20:17,455 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 12 predicate places. [2024-11-10 10:20:17,456 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 41 transitions, 123 flow [2024-11-10 10:20:17,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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 10:20:17,456 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:20:17,456 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, 1, 1, 1, 1, 1] [2024-11-10 10:20:17,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 10:20:17,456 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:20:17,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:20:17,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1559063950, now seen corresponding path program 3 times [2024-11-10 10:20:17,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:20:17,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259821607] [2024-11-10 10:20:17,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:20:17,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:20:17,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:20:17,548 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 10:20:17,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:20:17,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259821607] [2024-11-10 10:20:17,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259821607] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:20:17,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:20:17,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 10:20:17,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353364198] [2024-11-10 10:20:17,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:20:17,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:20:17,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:20:17,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:20:17,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-10 10:20:17,555 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-11-10 10:20:17,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 41 transitions, 123 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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 10:20:17,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:20:17,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-11-10 10:20:17,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:20:17,803 INFO L124 PetriNetUnfolderBase]: 1814/2865 cut-off events. [2024-11-10 10:20:17,803 INFO L125 PetriNetUnfolderBase]: For 657/657 co-relation queries the response was YES. [2024-11-10 10:20:17,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6593 conditions, 2865 events. 1814/2865 cut-off events. For 657/657 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 14623 event pairs, 368 based on Foata normal form. 8/2871 useless extension candidates. Maximal degree in co-relation 6585. Up to 1550 conditions per place. [2024-11-10 10:20:17,810 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 0 selfloop transitions, 0 changer transitions 81/81 dead transitions. [2024-11-10 10:20:17,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 81 transitions, 392 flow [2024-11-10 10:20:17,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:20:17,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:20:17,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 116 transitions. [2024-11-10 10:20:17,811 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4715447154471545 [2024-11-10 10:20:17,811 INFO L175 Difference]: Start difference. First operand has 57 places, 41 transitions, 123 flow. Second operand 6 states and 116 transitions. [2024-11-10 10:20:17,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 81 transitions, 392 flow [2024-11-10 10:20:17,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 81 transitions, 386 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-10 10:20:17,813 INFO L231 Difference]: Finished difference. Result has 54 places, 0 transitions, 0 flow [2024-11-10 10:20:17,813 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=54, PETRI_TRANSITIONS=0} [2024-11-10 10:20:17,814 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 9 predicate places. [2024-11-10 10:20:17,814 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 0 transitions, 0 flow [2024-11-10 10:20:17,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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 10:20:17,816 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-11-10 10:20:17,816 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-11-10 10:20:17,817 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-11-10 10:20:17,817 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-10 10:20:17,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 10:20:17,817 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2024-11-10 10:20:17,819 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-10 10:20:17,819 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-10 10:20:17,823 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 10:20:17 BasicIcfg [2024-11-10 10:20:17,824 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-10 10:20:17,824 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-10 10:20:17,824 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-10 10:20:17,824 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-10 10:20:17,825 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:20:14" (3/4) ... [2024-11-10 10:20:17,827 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-10 10:20:17,829 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure P0 [2024-11-10 10:20:17,829 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure P1 [2024-11-10 10:20:17,829 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure P2 [2024-11-10 10:20:17,832 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 29 nodes and edges [2024-11-10 10:20:17,832 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2024-11-10 10:20:17,832 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-10 10:20:17,833 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-10 10:20:17,895 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-10 10:20:17,895 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-10 10:20:17,895 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-10 10:20:17,896 INFO L158 Benchmark]: Toolchain (without parser) took 4881.58ms. Allocated memory was 195.0MB in the beginning and 310.4MB in the end (delta: 115.3MB). Free memory was 125.0MB in the beginning and 171.3MB in the end (delta: -46.3MB). Peak memory consumption was 70.9MB. Max. memory is 16.1GB. [2024-11-10 10:20:17,896 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 119.5MB. Free memory is still 85.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 10:20:17,897 INFO L158 Benchmark]: CACSL2BoogieTranslator took 409.59ms. Allocated memory is still 195.0MB. Free memory was 124.7MB in the beginning and 165.9MB in the end (delta: -41.2MB). Peak memory consumption was 30.2MB. Max. memory is 16.1GB. [2024-11-10 10:20:17,897 INFO L158 Benchmark]: Boogie Procedure Inliner took 102.34ms. Allocated memory is still 195.0MB. Free memory was 165.1MB in the beginning and 163.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 10:20:17,897 INFO L158 Benchmark]: Boogie Preprocessor took 41.13ms. Allocated memory is still 195.0MB. Free memory was 163.3MB in the beginning and 161.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 10:20:17,897 INFO L158 Benchmark]: IcfgBuilder took 459.85ms. Allocated memory is still 195.0MB. Free memory was 161.2MB in the beginning and 140.2MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-10 10:20:17,898 INFO L158 Benchmark]: TraceAbstraction took 3787.99ms. Allocated memory was 195.0MB in the beginning and 310.4MB in the end (delta: 115.3MB). Free memory was 139.7MB in the beginning and 175.5MB in the end (delta: -35.8MB). Peak memory consumption was 82.7MB. Max. memory is 16.1GB. [2024-11-10 10:20:17,898 INFO L158 Benchmark]: Witness Printer took 71.47ms. Allocated memory is still 310.4MB. Free memory was 175.5MB in the beginning and 171.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-10 10:20:17,899 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 119.5MB. Free memory is still 85.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 409.59ms. Allocated memory is still 195.0MB. Free memory was 124.7MB in the beginning and 165.9MB in the end (delta: -41.2MB). Peak memory consumption was 30.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 102.34ms. Allocated memory is still 195.0MB. Free memory was 165.1MB in the beginning and 163.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.13ms. Allocated memory is still 195.0MB. Free memory was 163.3MB in the beginning and 161.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 459.85ms. Allocated memory is still 195.0MB. Free memory was 161.2MB in the beginning and 140.2MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 3787.99ms. Allocated memory was 195.0MB in the beginning and 310.4MB in the end (delta: 115.3MB). Free memory was 139.7MB in the beginning and 175.5MB in the end (delta: -35.8MB). Peak memory consumption was 82.7MB. Max. memory is 16.1GB. * Witness Printer took 71.47ms. Allocated memory is still 310.4MB. Free memory was 175.5MB in the beginning and 171.3MB 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: 18]: 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 7 procedures, 68 locations, 4 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: 3.7s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 406 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 400 mSDsluCounter, 25 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 24 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1098 IncrementalHoareTripleChecker+Invalid, 1107 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 1 mSDtfsCounter, 1098 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=164occurred in iteration=3, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 156 NumberOfCodeBlocks, 156 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 150 ConstructedInterpolants, 0 QuantifiedInterpolants, 504 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-10 10:20:17,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE