./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-simpl-str-trans.wvr.c --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/weaver/chl-simpl-str-trans.wvr.c -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 f7b74cf7a2419cab3ab4545eb4bb4cb738b0dd565da7b17a0ca0e4253475f1b6 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 10:28:30,474 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 10:28:30,568 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-10 10:28:30,573 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 10:28:30,574 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 10:28:30,607 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 10:28:30,607 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 10:28:30,608 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 10:28:30,608 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 10:28:30,609 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 10:28:30,609 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 10:28:30,610 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 10:28:30,610 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 10:28:30,611 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 10:28:30,611 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 10:28:30,611 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 10:28:30,612 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 10:28:30,612 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 10:28:30,612 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 10:28:30,613 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 10:28:30,613 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 10:28:30,614 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 10:28:30,614 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 10:28:30,614 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 10:28:30,615 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 10:28:30,615 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 10:28:30,615 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 10:28:30,616 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 10:28:30,616 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 10:28:30,616 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 10:28:30,617 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 10:28:30,617 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 10:28:30,617 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:28:30,618 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 10:28:30,618 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 10:28:30,619 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 10:28:30,619 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 10:28:30,619 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 10:28:30,619 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 10:28:30,620 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 10:28:30,620 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 10:28:30,621 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 10:28:30,621 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7b74cf7a2419cab3ab4545eb4bb4cb738b0dd565da7b17a0ca0e4253475f1b6 [2024-11-10 10:28:30,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 10:28:30,896 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 10:28:30,899 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 10:28:30,900 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 10:28:30,901 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 10:28:30,902 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-simpl-str-trans.wvr.c [2024-11-10 10:28:32,335 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 10:28:32,527 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 10:28:32,528 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-simpl-str-trans.wvr.c [2024-11-10 10:28:32,535 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef9ceda89/7a749bc7cf9148d8a208dc36fc51833c/FLAGb96e4b2b7 [2024-11-10 10:28:32,547 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef9ceda89/7a749bc7cf9148d8a208dc36fc51833c [2024-11-10 10:28:32,549 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 10:28:32,551 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 10:28:32,552 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 10:28:32,552 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 10:28:32,556 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 10:28:32,557 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:28:32" (1/1) ... [2024-11-10 10:28:32,558 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e92d905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:32, skipping insertion in model container [2024-11-10 10:28:32,558 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:28:32" (1/1) ... [2024-11-10 10:28:32,581 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 10:28:32,812 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/weaver/chl-simpl-str-trans.wvr.c[2553,2566] [2024-11-10 10:28:32,821 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:28:32,833 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 10:28:32,855 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/weaver/chl-simpl-str-trans.wvr.c[2553,2566] [2024-11-10 10:28:32,857 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:28:32,878 INFO L204 MainTranslator]: Completed translation [2024-11-10 10:28:32,879 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:32 WrapperNode [2024-11-10 10:28:32,879 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 10:28:32,880 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 10:28:32,880 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 10:28:32,880 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 10:28:32,887 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:32" (1/1) ... [2024-11-10 10:28:32,895 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:32" (1/1) ... [2024-11-10 10:28:32,923 INFO L138 Inliner]: procedures = 22, calls = 15, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 153 [2024-11-10 10:28:32,923 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 10:28:32,924 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 10:28:32,924 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 10:28:32,924 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 10:28:32,936 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:32" (1/1) ... [2024-11-10 10:28:32,936 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:32" (1/1) ... [2024-11-10 10:28:32,939 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:32" (1/1) ... [2024-11-10 10:28:32,957 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 10:28:32,957 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:32" (1/1) ... [2024-11-10 10:28:32,957 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:32" (1/1) ... [2024-11-10 10:28:32,963 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:32" (1/1) ... [2024-11-10 10:28:32,964 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:32" (1/1) ... [2024-11-10 10:28:32,965 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:32" (1/1) ... [2024-11-10 10:28:32,966 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:32" (1/1) ... [2024-11-10 10:28:32,969 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 10:28:32,975 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 10:28:32,975 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 10:28:32,975 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 10:28:32,976 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:32" (1/1) ... [2024-11-10 10:28:32,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:28:32,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:28:33,026 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 10:28:33,033 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 10:28:33,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 10:28:33,086 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 10:28:33,087 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 10:28:33,087 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 10:28:33,087 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 10:28:33,087 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-10 10:28:33,088 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-10 10:28:33,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 10:28:33,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 10:28:33,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 10:28:33,091 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 10:28:33,209 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 10:28:33,212 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 10:28:33,508 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 10:28:33,508 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 10:28:33,884 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 10:28:33,885 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 10:28:33,886 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:28:33 BoogieIcfgContainer [2024-11-10 10:28:33,886 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 10:28:33,889 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 10:28:33,890 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 10:28:33,893 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 10:28:33,894 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:28:32" (1/3) ... [2024-11-10 10:28:33,895 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a3309e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:28:33, skipping insertion in model container [2024-11-10 10:28:33,895 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:32" (2/3) ... [2024-11-10 10:28:33,897 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a3309e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:28:33, skipping insertion in model container [2024-11-10 10:28:33,897 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:28:33" (3/3) ... [2024-11-10 10:28:33,898 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-trans.wvr.c [2024-11-10 10:28:33,916 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 10:28:33,918 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-10 10:28:33,918 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 10:28:33,982 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-10 10:28:34,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 19 transitions, 59 flow [2024-11-10 10:28:34,056 INFO L124 PetriNetUnfolderBase]: 0/16 cut-off events. [2024-11-10 10:28:34,058 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 10:28:34,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 16 events. 0/16 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 7 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-11-10 10:28:34,061 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 19 transitions, 59 flow [2024-11-10 10:28:34,064 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 15 transitions, 48 flow [2024-11-10 10:28:34,073 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:28:34,080 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;@7add813e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:28:34,080 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-10 10:28:34,092 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:28:34,092 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2024-11-10 10:28:34,092 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 10:28:34,092 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:28:34,093 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:28:34,094 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 10:28:34,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:28:34,100 INFO L85 PathProgramCache]: Analyzing trace with hash 288831072, now seen corresponding path program 1 times [2024-11-10 10:28:34,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:28:34,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181128776] [2024-11-10 10:28:34,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:28:34,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:28:34,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:28:35,214 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 10:28:35,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:28:35,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181128776] [2024-11-10 10:28:35,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181128776] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:28:35,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:28:35,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:28:35,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267713461] [2024-11-10 10:28:35,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:28:35,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:28:35,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:28:35,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:28:35,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:28:35,255 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 19 [2024-11-10 10:28:35,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 15 transitions, 48 flow. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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 10:28:35,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:28:35,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 19 [2024-11-10 10:28:35,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:28:35,550 INFO L124 PetriNetUnfolderBase]: 32/85 cut-off events. [2024-11-10 10:28:35,550 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-11-10 10:28:35,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 85 events. 32/85 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 228 event pairs, 1 based on Foata normal form. 1/86 useless extension candidates. Maximal degree in co-relation 145. Up to 34 conditions per place. [2024-11-10 10:28:35,554 INFO L140 encePairwiseOnDemand]: 14/19 looper letters, 26 selfloop transitions, 6 changer transitions 5/38 dead transitions. [2024-11-10 10:28:35,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 38 transitions, 198 flow [2024-11-10 10:28:35,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:28:35,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:28:35,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 62 transitions. [2024-11-10 10:28:35,569 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.543859649122807 [2024-11-10 10:28:35,570 INFO L175 Difference]: Start difference. First operand has 25 places, 15 transitions, 48 flow. Second operand 6 states and 62 transitions. [2024-11-10 10:28:35,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 38 transitions, 198 flow [2024-11-10 10:28:35,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 38 transitions, 166 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-10 10:28:35,577 INFO L231 Difference]: Finished difference. Result has 27 places, 19 transitions, 69 flow [2024-11-10 10:28:35,578 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=69, PETRI_PLACES=27, PETRI_TRANSITIONS=19} [2024-11-10 10:28:35,584 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 2 predicate places. [2024-11-10 10:28:35,585 INFO L471 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 69 flow [2024-11-10 10:28:35,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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 10:28:35,586 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:28:35,586 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:28:35,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 10:28:35,586 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 10:28:35,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:28:35,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1820507048, now seen corresponding path program 2 times [2024-11-10 10:28:35,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:28:35,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753642460] [2024-11-10 10:28:35,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:28:35,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:28:35,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:28:36,020 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 10:28:36,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:28:36,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753642460] [2024-11-10 10:28:36,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753642460] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:28:36,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:28:36,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:28:36,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708776102] [2024-11-10 10:28:36,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:28:36,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:28:36,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:28:36,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:28:36,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:28:36,026 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 19 [2024-11-10 10:28:36,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 69 flow. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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 10:28:36,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:28:36,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 19 [2024-11-10 10:28:36,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:28:36,234 INFO L124 PetriNetUnfolderBase]: 31/97 cut-off events. [2024-11-10 10:28:36,235 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2024-11-10 10:28:36,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 97 events. 31/97 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 314 event pairs, 4 based on Foata normal form. 1/98 useless extension candidates. Maximal degree in co-relation 256. Up to 46 conditions per place. [2024-11-10 10:28:36,236 INFO L140 encePairwiseOnDemand]: 14/19 looper letters, 26 selfloop transitions, 7 changer transitions 8/42 dead transitions. [2024-11-10 10:28:36,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 42 transitions, 220 flow [2024-11-10 10:28:36,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:28:36,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:28:36,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 63 transitions. [2024-11-10 10:28:36,240 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5526315789473685 [2024-11-10 10:28:36,240 INFO L175 Difference]: Start difference. First operand has 27 places, 19 transitions, 69 flow. Second operand 6 states and 63 transitions. [2024-11-10 10:28:36,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 42 transitions, 220 flow [2024-11-10 10:28:36,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 42 transitions, 216 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-10 10:28:36,242 INFO L231 Difference]: Finished difference. Result has 32 places, 20 transitions, 92 flow [2024-11-10 10:28:36,243 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=92, PETRI_PLACES=32, PETRI_TRANSITIONS=20} [2024-11-10 10:28:36,245 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 7 predicate places. [2024-11-10 10:28:36,245 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 20 transitions, 92 flow [2024-11-10 10:28:36,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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 10:28:36,245 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:28:36,246 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:28:36,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 10:28:36,246 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 10:28:36,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:28:36,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1595029928, now seen corresponding path program 3 times [2024-11-10 10:28:36,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:28:36,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165262560] [2024-11-10 10:28:36,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:28:36,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:28:36,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:28:36,729 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 10:28:36,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:28:36,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165262560] [2024-11-10 10:28:36,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165262560] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:28:36,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:28:36,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:28:36,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858429774] [2024-11-10 10:28:36,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:28:36,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:28:36,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:28:36,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:28:36,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:28:36,735 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 19 [2024-11-10 10:28:36,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 20 transitions, 92 flow. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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 10:28:36,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:28:36,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 19 [2024-11-10 10:28:36,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:28:36,973 INFO L124 PetriNetUnfolderBase]: 27/83 cut-off events. [2024-11-10 10:28:36,974 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2024-11-10 10:28:36,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278 conditions, 83 events. 27/83 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 241 event pairs, 1 based on Foata normal form. 1/84 useless extension candidates. Maximal degree in co-relation 262. Up to 38 conditions per place. [2024-11-10 10:28:36,976 INFO L140 encePairwiseOnDemand]: 14/19 looper letters, 23 selfloop transitions, 6 changer transitions 9/39 dead transitions. [2024-11-10 10:28:36,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 39 transitions, 228 flow [2024-11-10 10:28:36,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:28:36,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:28:36,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 62 transitions. [2024-11-10 10:28:36,979 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.543859649122807 [2024-11-10 10:28:36,979 INFO L175 Difference]: Start difference. First operand has 32 places, 20 transitions, 92 flow. Second operand 6 states and 62 transitions. [2024-11-10 10:28:36,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 39 transitions, 228 flow [2024-11-10 10:28:36,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 39 transitions, 213 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-11-10 10:28:36,983 INFO L231 Difference]: Finished difference. Result has 36 places, 19 transitions, 96 flow [2024-11-10 10:28:36,983 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=96, PETRI_PLACES=36, PETRI_TRANSITIONS=19} [2024-11-10 10:28:36,984 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 11 predicate places. [2024-11-10 10:28:36,984 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 19 transitions, 96 flow [2024-11-10 10:28:36,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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 10:28:36,984 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:28:36,984 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:28:36,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 10:28:36,985 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 10:28:36,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:28:36,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1619153594, now seen corresponding path program 4 times [2024-11-10 10:28:36,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:28:36,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033060948] [2024-11-10 10:28:36,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:28:36,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:28:37,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:28:37,302 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 10:28:37,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:28:37,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033060948] [2024-11-10 10:28:37,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033060948] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:28:37,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:28:37,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:28:37,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175751853] [2024-11-10 10:28:37,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:28:37,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:28:37,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:28:37,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:28:37,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:28:37,305 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 19 [2024-11-10 10:28:37,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 19 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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 10:28:37,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:28:37,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 19 [2024-11-10 10:28:37,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:28:37,442 INFO L124 PetriNetUnfolderBase]: 14/47 cut-off events. [2024-11-10 10:28:37,442 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2024-11-10 10:28:37,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 47 events. 14/47 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 90 event pairs, 1 based on Foata normal form. 1/48 useless extension candidates. Maximal degree in co-relation 164. Up to 16 conditions per place. [2024-11-10 10:28:37,443 INFO L140 encePairwiseOnDemand]: 14/19 looper letters, 16 selfloop transitions, 4 changer transitions 8/29 dead transitions. [2024-11-10 10:28:37,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 29 transitions, 177 flow [2024-11-10 10:28:37,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:28:37,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:28:37,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 51 transitions. [2024-11-10 10:28:37,445 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-11-10 10:28:37,445 INFO L175 Difference]: Start difference. First operand has 36 places, 19 transitions, 96 flow. Second operand 6 states and 51 transitions. [2024-11-10 10:28:37,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 29 transitions, 177 flow [2024-11-10 10:28:37,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 29 transitions, 156 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-10 10:28:37,447 INFO L231 Difference]: Finished difference. Result has 34 places, 17 transitions, 71 flow [2024-11-10 10:28:37,448 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=71, PETRI_PLACES=34, PETRI_TRANSITIONS=17} [2024-11-10 10:28:37,448 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 9 predicate places. [2024-11-10 10:28:37,449 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 17 transitions, 71 flow [2024-11-10 10:28:37,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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 10:28:37,449 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:28:37,449 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:28:37,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 10:28:37,450 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 10:28:37,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:28:37,450 INFO L85 PathProgramCache]: Analyzing trace with hash -157905044, now seen corresponding path program 5 times [2024-11-10 10:28:37,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:28:37,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662006371] [2024-11-10 10:28:37,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:28:37,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:28:37,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:28:37,791 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 10:28:37,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:28:37,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662006371] [2024-11-10 10:28:37,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662006371] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:28:37,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:28:37,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:28:37,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214971770] [2024-11-10 10:28:37,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:28:37,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:28:37,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:28:37,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:28:37,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:28:37,794 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 19 [2024-11-10 10:28:37,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 17 transitions, 71 flow. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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 10:28:37,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:28:37,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 19 [2024-11-10 10:28:37,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:28:37,965 INFO L124 PetriNetUnfolderBase]: 8/37 cut-off events. [2024-11-10 10:28:37,965 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-11-10 10:28:37,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 37 events. 8/37 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 52 event pairs, 0 based on Foata normal form. 1/38 useless extension candidates. Maximal degree in co-relation 116. Up to 17 conditions per place. [2024-11-10 10:28:37,966 INFO L140 encePairwiseOnDemand]: 14/19 looper letters, 13 selfloop transitions, 3 changer transitions 10/27 dead transitions. [2024-11-10 10:28:37,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 27 transitions, 154 flow [2024-11-10 10:28:37,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:28:37,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:28:37,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 51 transitions. [2024-11-10 10:28:37,968 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-11-10 10:28:37,968 INFO L175 Difference]: Start difference. First operand has 34 places, 17 transitions, 71 flow. Second operand 6 states and 51 transitions. [2024-11-10 10:28:37,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 27 transitions, 154 flow [2024-11-10 10:28:37,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 27 transitions, 132 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-11-10 10:28:37,969 INFO L231 Difference]: Finished difference. Result has 32 places, 15 transitions, 55 flow [2024-11-10 10:28:37,970 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=55, PETRI_PLACES=32, PETRI_TRANSITIONS=15} [2024-11-10 10:28:37,970 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 7 predicate places. [2024-11-10 10:28:37,971 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 15 transitions, 55 flow [2024-11-10 10:28:37,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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 10:28:37,971 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:28:37,971 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:28:37,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 10:28:37,972 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 10:28:37,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:28:37,973 INFO L85 PathProgramCache]: Analyzing trace with hash 697401610, now seen corresponding path program 6 times [2024-11-10 10:28:37,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:28:37,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809853197] [2024-11-10 10:28:37,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:28:37,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:28:37,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:28:38,249 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 10:28:38,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:28:38,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809853197] [2024-11-10 10:28:38,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809853197] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:28:38,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:28:38,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:28:38,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991635754] [2024-11-10 10:28:38,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:28:38,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:28:38,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:28:38,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:28:38,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:28:38,252 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 19 [2024-11-10 10:28:38,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 15 transitions, 55 flow. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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 10:28:38,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:28:38,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 19 [2024-11-10 10:28:38,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:28:38,373 INFO L124 PetriNetUnfolderBase]: 3/19 cut-off events. [2024-11-10 10:28:38,374 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-10 10:28:38,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 19 events. 3/19 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 0 based on Foata normal form. 1/20 useless extension candidates. Maximal degree in co-relation 60. Up to 7 conditions per place. [2024-11-10 10:28:38,375 INFO L140 encePairwiseOnDemand]: 14/19 looper letters, 0 selfloop transitions, 0 changer transitions 16/16 dead transitions. [2024-11-10 10:28:38,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 16 transitions, 87 flow [2024-11-10 10:28:38,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:28:38,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:28:38,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 41 transitions. [2024-11-10 10:28:38,376 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35964912280701755 [2024-11-10 10:28:38,376 INFO L175 Difference]: Start difference. First operand has 32 places, 15 transitions, 55 flow. Second operand 6 states and 41 transitions. [2024-11-10 10:28:38,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 16 transitions, 87 flow [2024-11-10 10:28:38,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 16 transitions, 74 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-11-10 10:28:38,377 INFO L231 Difference]: Finished difference. Result has 27 places, 0 transitions, 0 flow [2024-11-10 10:28:38,377 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=27, PETRI_TRANSITIONS=0} [2024-11-10 10:28:38,378 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 2 predicate places. [2024-11-10 10:28:38,378 INFO L471 AbstractCegarLoop]: Abstraction has has 27 places, 0 transitions, 0 flow [2024-11-10 10:28:38,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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 10:28:38,383 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-11-10 10:28:38,383 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-11-10 10:28:38,384 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-11-10 10:28:38,384 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-10 10:28:38,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 10:28:38,385 INFO L407 BasicCegarLoop]: Path program histogram: [6] [2024-11-10 10:28:38,388 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-10 10:28:38,388 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-10 10:28:38,393 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 10:28:38 BasicIcfg [2024-11-10 10:28:38,394 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-10 10:28:38,394 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-10 10:28:38,394 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-10 10:28:38,395 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-10 10:28:38,395 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:28:33" (3/4) ... [2024-11-10 10:28:38,397 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-10 10:28:38,401 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-10 10:28:38,401 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-10 10:28:38,401 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-11-10 10:28:38,407 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 51 nodes and edges [2024-11-10 10:28:38,408 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2024-11-10 10:28:38,408 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-11-10 10:28:38,408 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-10 10:28:38,508 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-10 10:28:38,509 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-10 10:28:38,510 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-10 10:28:38,511 INFO L158 Benchmark]: Toolchain (without parser) took 5960.14ms. Allocated memory was 159.4MB in the beginning and 262.1MB in the end (delta: 102.8MB). Free memory was 102.8MB in the beginning and 219.4MB in the end (delta: -116.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 10:28:38,511 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 159.4MB. Free memory was 117.4MB in the beginning and 117.2MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 10:28:38,511 INFO L158 Benchmark]: CACSL2BoogieTranslator took 327.21ms. Allocated memory is still 159.4MB. Free memory was 102.8MB in the beginning and 89.0MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-10 10:28:38,512 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.42ms. Allocated memory is still 159.4MB. Free memory was 89.0MB in the beginning and 86.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 10:28:38,512 INFO L158 Benchmark]: Boogie Preprocessor took 44.61ms. Allocated memory is still 159.4MB. Free memory was 86.8MB in the beginning and 84.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 10:28:38,512 INFO L158 Benchmark]: IcfgBuilder took 911.34ms. Allocated memory was 159.4MB in the beginning and 218.1MB in the end (delta: 58.7MB). Free memory was 84.8MB in the beginning and 153.7MB in the end (delta: -69.0MB). Peak memory consumption was 34.4MB. Max. memory is 16.1GB. [2024-11-10 10:28:38,513 INFO L158 Benchmark]: TraceAbstraction took 4504.89ms. Allocated memory was 218.1MB in the beginning and 262.1MB in the end (delta: 44.0MB). Free memory was 152.7MB in the beginning and 223.6MB in the end (delta: -70.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 10:28:38,513 INFO L158 Benchmark]: Witness Printer took 116.02ms. Allocated memory is still 262.1MB. Free memory was 223.6MB in the beginning and 219.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-10 10:28:38,514 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 159.4MB. Free memory was 117.4MB in the beginning and 117.2MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 327.21ms. Allocated memory is still 159.4MB. Free memory was 102.8MB in the beginning and 89.0MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.42ms. Allocated memory is still 159.4MB. Free memory was 89.0MB in the beginning and 86.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.61ms. Allocated memory is still 159.4MB. Free memory was 86.8MB in the beginning and 84.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 911.34ms. Allocated memory was 159.4MB in the beginning and 218.1MB in the end (delta: 58.7MB). Free memory was 84.8MB in the beginning and 153.7MB in the end (delta: -69.0MB). Peak memory consumption was 34.4MB. Max. memory is 16.1GB. * TraceAbstraction took 4504.89ms. Allocated memory was 218.1MB in the beginning and 262.1MB in the end (delta: 44.0MB). Free memory was 152.7MB in the beginning and 223.6MB in the end (delta: -70.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 116.02ms. Allocated memory is still 262.1MB. Free memory was 223.6MB in the beginning and 219.4MB 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: 80]: 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, 29 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: 4.4s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 160 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 160 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 358 IncrementalHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 0 mSDtfsCounter, 358 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=96occurred in iteration=3, InterpolantAutomatonStates: 36, 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, 2.7s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 84 ConstructedInterpolants, 0 QuantifiedInterpolants, 839 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 10:28:38,547 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE