./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-array-sum-alt.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/popl20-more-array-sum-alt.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 cd36b7f18dbd530fce94e0943ff58c16da276fcc41b96fdafde87c3c69036175 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 10:33:02,835 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 10:33:02,913 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-10 10:33:02,919 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 10:33:02,919 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 10:33:02,956 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 10:33:02,958 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 10:33:02,958 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 10:33:02,959 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 10:33:02,961 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 10:33:02,962 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 10:33:02,962 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 10:33:02,962 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 10:33:02,964 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 10:33:02,964 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 10:33:02,965 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 10:33:02,965 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 10:33:02,965 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 10:33:02,966 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 10:33:02,966 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 10:33:02,966 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 10:33:02,969 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 10:33:02,970 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 10:33:02,970 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 10:33:02,970 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 10:33:02,971 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 10:33:02,971 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 10:33:02,971 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 10:33:02,971 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 10:33:02,972 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 10:33:02,972 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 10:33:02,973 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 10:33:02,973 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:33:02,973 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 10:33:02,974 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 10:33:02,974 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 10:33:02,974 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 10:33:02,974 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 10:33:02,975 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 10:33:02,975 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 10:33:02,975 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 10:33:02,976 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 10:33:02,976 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd36b7f18dbd530fce94e0943ff58c16da276fcc41b96fdafde87c3c69036175 [2024-11-10 10:33:03,253 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 10:33:03,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 10:33:03,278 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 10:33:03,279 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 10:33:03,280 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 10:33:03,281 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c [2024-11-10 10:33:04,744 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 10:33:04,941 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 10:33:04,944 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c [2024-11-10 10:33:04,954 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9d1f5b5b/c762bcc9e6f444d6837577f01627ed84/FLAG9f1b26238 [2024-11-10 10:33:04,966 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9d1f5b5b/c762bcc9e6f444d6837577f01627ed84 [2024-11-10 10:33:04,969 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 10:33:04,970 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 10:33:04,972 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 10:33:04,973 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 10:33:04,979 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 10:33:04,979 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:33:04" (1/1) ... [2024-11-10 10:33:04,981 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1311bd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:04, skipping insertion in model container [2024-11-10 10:33:04,981 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:33:04" (1/1) ... [2024-11-10 10:33:05,005 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 10:33:05,201 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/popl20-more-array-sum-alt.wvr.c[2368,2381] [2024-11-10 10:33:05,211 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:33:05,220 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 10:33:05,237 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/popl20-more-array-sum-alt.wvr.c[2368,2381] [2024-11-10 10:33:05,243 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:33:05,259 INFO L204 MainTranslator]: Completed translation [2024-11-10 10:33:05,259 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:05 WrapperNode [2024-11-10 10:33:05,259 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 10:33:05,260 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 10:33:05,260 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 10:33:05,261 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 10:33:05,266 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:05" (1/1) ... [2024-11-10 10:33:05,273 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:05" (1/1) ... [2024-11-10 10:33:05,297 INFO L138 Inliner]: procedures = 22, calls = 24, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 180 [2024-11-10 10:33:05,297 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 10:33:05,298 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 10:33:05,298 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 10:33:05,298 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 10:33:05,307 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:05" (1/1) ... [2024-11-10 10:33:05,307 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:05" (1/1) ... [2024-11-10 10:33:05,310 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:05" (1/1) ... [2024-11-10 10:33:05,324 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-10 10:33:05,325 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:05" (1/1) ... [2024-11-10 10:33:05,325 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:05" (1/1) ... [2024-11-10 10:33:05,331 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:05" (1/1) ... [2024-11-10 10:33:05,331 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:05" (1/1) ... [2024-11-10 10:33:05,337 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:05" (1/1) ... [2024-11-10 10:33:05,338 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:05" (1/1) ... [2024-11-10 10:33:05,344 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 10:33:05,346 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 10:33:05,346 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 10:33:05,346 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 10:33:05,347 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:05" (1/1) ... [2024-11-10 10:33:05,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:33:05,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:33:05,381 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 10:33:05,382 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 10:33:05,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 10:33:05,422 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 10:33:05,423 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 10:33:05,423 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 10:33:05,423 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 10:33:05,423 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-10 10:33:05,423 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-10 10:33:05,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 10:33:05,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 10:33:05,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 10:33:05,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 10:33:05,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 10:33:05,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 10:33:05,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 10:33:05,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 10:33:05,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 10:33:05,425 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 10:33:05,527 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 10:33:05,528 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 10:33:05,874 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 10:33:05,874 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 10:33:06,116 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 10:33:06,116 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 10:33:06,116 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:33:06 BoogieIcfgContainer [2024-11-10 10:33:06,116 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 10:33:06,118 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 10:33:06,118 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 10:33:06,122 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 10:33:06,122 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:33:04" (1/3) ... [2024-11-10 10:33:06,123 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@667ec247 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:33:06, skipping insertion in model container [2024-11-10 10:33:06,123 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:05" (2/3) ... [2024-11-10 10:33:06,124 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@667ec247 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:33:06, skipping insertion in model container [2024-11-10 10:33:06,124 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:33:06" (3/3) ... [2024-11-10 10:33:06,126 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum-alt.wvr.c [2024-11-10 10:33:06,138 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 10:33:06,138 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-10 10:33:06,139 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 10:33:06,192 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-10 10:33:06,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 43 transitions, 107 flow [2024-11-10 10:33:06,270 INFO L124 PetriNetUnfolderBase]: 8/40 cut-off events. [2024-11-10 10:33:06,271 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 10:33:06,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 40 events. 8/40 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 57 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2024-11-10 10:33:06,275 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 43 transitions, 107 flow [2024-11-10 10:33:06,278 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 39 transitions, 96 flow [2024-11-10 10:33:06,287 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:33:06,294 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;@5d337f16, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:33:06,294 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-10 10:33:06,310 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:33:06,310 INFO L124 PetriNetUnfolderBase]: 8/38 cut-off events. [2024-11-10 10:33:06,310 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 10:33:06,310 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:33:06,311 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] [2024-11-10 10:33:06,311 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 10:33:06,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:33:06,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1858595576, now seen corresponding path program 1 times [2024-11-10 10:33:06,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:33:06,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70937994] [2024-11-10 10:33:06,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:33:06,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:33:06,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:33:06,545 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 10:33:06,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:33:06,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70937994] [2024-11-10 10:33:06,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70937994] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:33:06,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:33:06,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:33:06,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282018326] [2024-11-10 10:33:06,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:33:06,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 10:33:06,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:33:06,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 10:33:06,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 10:33:06,596 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-11-10 10:33:06,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 96 flow. Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 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 10:33:06,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:33:06,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-11-10 10:33:06,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:33:06,868 INFO L124 PetriNetUnfolderBase]: 498/779 cut-off events. [2024-11-10 10:33:06,869 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2024-11-10 10:33:06,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1571 conditions, 779 events. 498/779 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3433 event pairs, 358 based on Foata normal form. 140/889 useless extension candidates. Maximal degree in co-relation 1348. Up to 719 conditions per place. [2024-11-10 10:33:06,880 INFO L140 encePairwiseOnDemand]: 39/43 looper letters, 26 selfloop transitions, 0 changer transitions 0/35 dead transitions. [2024-11-10 10:33:06,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 35 transitions, 140 flow [2024-11-10 10:33:06,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 10:33:06,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 10:33:06,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 54 transitions. [2024-11-10 10:33:06,894 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.627906976744186 [2024-11-10 10:33:06,896 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 96 flow. Second operand 2 states and 54 transitions. [2024-11-10 10:33:06,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 35 transitions, 140 flow [2024-11-10 10:33:06,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 35 transitions, 128 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-10 10:33:06,907 INFO L231 Difference]: Finished difference. Result has 36 places, 35 transitions, 76 flow [2024-11-10 10:33:06,909 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=76, PETRI_PLACES=36, PETRI_TRANSITIONS=35} [2024-11-10 10:33:06,915 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, -5 predicate places. [2024-11-10 10:33:06,915 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 35 transitions, 76 flow [2024-11-10 10:33:06,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 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 10:33:06,916 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:33:06,916 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:33:06,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 10:33:06,917 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 10:33:06,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:33:06,917 INFO L85 PathProgramCache]: Analyzing trace with hash -639000170, now seen corresponding path program 1 times [2024-11-10 10:33:06,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:33:06,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936352373] [2024-11-10 10:33:06,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:33:06,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:33:06,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:33:07,147 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 10:33:07,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:33:07,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936352373] [2024-11-10 10:33:07,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936352373] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:33:07,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:33:07,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:33:07,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333362763] [2024-11-10 10:33:07,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:33:07,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:33:07,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:33:07,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:33:07,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 10:33:07,154 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-11-10 10:33:07,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 10:33:07,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:33:07,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-11-10 10:33:07,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:33:07,375 INFO L124 PetriNetUnfolderBase]: 817/1347 cut-off events. [2024-11-10 10:33:07,376 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-11-10 10:33:07,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2560 conditions, 1347 events. 817/1347 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 7153 event pairs, 226 based on Foata normal form. 1/1326 useless extension candidates. Maximal degree in co-relation 2557. Up to 803 conditions per place. [2024-11-10 10:33:07,390 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 40 selfloop transitions, 4 changer transitions 1/54 dead transitions. [2024-11-10 10:33:07,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 54 transitions, 209 flow [2024-11-10 10:33:07,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 10:33:07,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 10:33:07,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-11-10 10:33:07,392 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6356589147286822 [2024-11-10 10:33:07,392 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 76 flow. Second operand 3 states and 82 transitions. [2024-11-10 10:33:07,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 54 transitions, 209 flow [2024-11-10 10:33:07,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 54 transitions, 209 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 10:33:07,397 INFO L231 Difference]: Finished difference. Result has 39 places, 38 transitions, 102 flow [2024-11-10 10:33:07,398 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=39, PETRI_TRANSITIONS=38} [2024-11-10 10:33:07,399 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, -2 predicate places. [2024-11-10 10:33:07,399 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 38 transitions, 102 flow [2024-11-10 10:33:07,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 10:33:07,400 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:33:07,400 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 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 10:33:07,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 10:33:07,401 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 10:33:07,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:33:07,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1585625931, now seen corresponding path program 1 times [2024-11-10 10:33:07,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:33:07,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965009638] [2024-11-10 10:33:07,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:33:07,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:33:07,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:33:07,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:33:07,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:33:07,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965009638] [2024-11-10 10:33:07,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965009638] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:33:07,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:33:07,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:33:07,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443586223] [2024-11-10 10:33:07,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:33:07,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:33:07,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:33:07,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:33:07,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:33:07,632 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-11-10 10:33:07,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 38 transitions, 102 flow. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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 10:33:07,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:33:07,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-11-10 10:33:07,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:33:07,996 INFO L124 PetriNetUnfolderBase]: 1511/2628 cut-off events. [2024-11-10 10:33:07,997 INFO L125 PetriNetUnfolderBase]: For 412/412 co-relation queries the response was YES. [2024-11-10 10:33:08,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5470 conditions, 2628 events. 1511/2628 cut-off events. For 412/412 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 16839 event pairs, 946 based on Foata normal form. 98/2672 useless extension candidates. Maximal degree in co-relation 5465. Up to 1180 conditions per place. [2024-11-10 10:33:08,018 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 68 selfloop transitions, 6 changer transitions 0/82 dead transitions. [2024-11-10 10:33:08,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 82 transitions, 368 flow [2024-11-10 10:33:08,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:33:08,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:33:08,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 134 transitions. [2024-11-10 10:33:08,022 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5193798449612403 [2024-11-10 10:33:08,022 INFO L175 Difference]: Start difference. First operand has 39 places, 38 transitions, 102 flow. Second operand 6 states and 134 transitions. [2024-11-10 10:33:08,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 82 transitions, 368 flow [2024-11-10 10:33:08,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 82 transitions, 360 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 10:33:08,025 INFO L231 Difference]: Finished difference. Result has 47 places, 43 transitions, 144 flow [2024-11-10 10:33:08,027 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=144, PETRI_PLACES=47, PETRI_TRANSITIONS=43} [2024-11-10 10:33:08,028 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 6 predicate places. [2024-11-10 10:33:08,028 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 43 transitions, 144 flow [2024-11-10 10:33:08,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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 10:33:08,029 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:33:08,029 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 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 10:33:08,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 10:33:08,030 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 10:33:08,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:33:08,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1645588871, now seen corresponding path program 1 times [2024-11-10 10:33:08,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:33:08,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247334277] [2024-11-10 10:33:08,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:33:08,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:33:08,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:33:08,220 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:33:08,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:33:08,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247334277] [2024-11-10 10:33:08,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247334277] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:33:08,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404939896] [2024-11-10 10:33:08,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:33:08,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:33:08,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:33:08,226 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:33:08,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 10:33:08,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:33:08,328 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 10:33:08,335 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:33:08,497 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:33:08,498 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:33:08,609 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:33:08,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404939896] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 10:33:08,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 10:33:08,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2024-11-10 10:33:08,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526599617] [2024-11-10 10:33:08,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:33:08,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 10:33:08,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:33:08,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 10:33:08,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-10 10:33:08,635 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-11-10 10:33:08,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 43 transitions, 144 flow. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 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 10:33:08,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:33:08,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-11-10 10:33:08,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:33:09,414 INFO L124 PetriNetUnfolderBase]: 2787/4237 cut-off events. [2024-11-10 10:33:09,415 INFO L125 PetriNetUnfolderBase]: For 2169/2169 co-relation queries the response was YES. [2024-11-10 10:33:09,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10269 conditions, 4237 events. 2787/4237 cut-off events. For 2169/2169 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 24377 event pairs, 1018 based on Foata normal form. 0/3800 useless extension candidates. Maximal degree in co-relation 10260. Up to 1102 conditions per place. [2024-11-10 10:33:09,444 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 143 selfloop transitions, 23 changer transitions 0/172 dead transitions. [2024-11-10 10:33:09,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 172 transitions, 884 flow [2024-11-10 10:33:09,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 10:33:09,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-10 10:33:09,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 259 transitions. [2024-11-10 10:33:09,448 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.501937984496124 [2024-11-10 10:33:09,448 INFO L175 Difference]: Start difference. First operand has 47 places, 43 transitions, 144 flow. Second operand 12 states and 259 transitions. [2024-11-10 10:33:09,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 172 transitions, 884 flow [2024-11-10 10:33:09,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 172 transitions, 882 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 10:33:09,457 INFO L231 Difference]: Finished difference. Result has 65 places, 63 transitions, 293 flow [2024-11-10 10:33:09,458 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=293, PETRI_PLACES=65, PETRI_TRANSITIONS=63} [2024-11-10 10:33:09,459 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 24 predicate places. [2024-11-10 10:33:09,459 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 63 transitions, 293 flow [2024-11-10 10:33:09,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 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 10:33:09,460 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:33:09,460 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 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 10:33:09,479 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 10:33:09,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:33:09,661 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 10:33:09,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:33:09,662 INFO L85 PathProgramCache]: Analyzing trace with hash 918160263, now seen corresponding path program 2 times [2024-11-10 10:33:09,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:33:09,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632718832] [2024-11-10 10:33:09,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:33:09,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:33:09,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:33:09,789 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:33:09,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:33:09,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632718832] [2024-11-10 10:33:09,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632718832] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:33:09,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315966064] [2024-11-10 10:33:09,790 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:33:09,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:33:09,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:33:09,793 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:33:09,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 10:33:09,881 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:33:09,881 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:33:09,883 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 10:33:09,885 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:33:09,986 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:33:09,986 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:33:10,090 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:33:10,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315966064] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 10:33:10,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 10:33:10,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 14 [2024-11-10 10:33:10,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948978456] [2024-11-10 10:33:10,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:33:10,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 10:33:10,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:33:10,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 10:33:10,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-10 10:33:10,112 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-11-10 10:33:10,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 63 transitions, 293 flow. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 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 10:33:10,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:33:10,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-11-10 10:33:10,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:33:10,994 INFO L124 PetriNetUnfolderBase]: 3678/5532 cut-off events. [2024-11-10 10:33:10,994 INFO L125 PetriNetUnfolderBase]: For 7008/7014 co-relation queries the response was YES. [2024-11-10 10:33:11,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16989 conditions, 5532 events. 3678/5532 cut-off events. For 7008/7014 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 32713 event pairs, 933 based on Foata normal form. 24/5499 useless extension candidates. Maximal degree in co-relation 16972. Up to 1081 conditions per place. [2024-11-10 10:33:11,040 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 137 selfloop transitions, 56 changer transitions 0/199 dead transitions. [2024-11-10 10:33:11,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 199 transitions, 1275 flow [2024-11-10 10:33:11,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 10:33:11,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-10 10:33:11,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 258 transitions. [2024-11-10 10:33:11,042 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-10 10:33:11,042 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 293 flow. Second operand 12 states and 258 transitions. [2024-11-10 10:33:11,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 199 transitions, 1275 flow [2024-11-10 10:33:11,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 199 transitions, 1272 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 10:33:11,081 INFO L231 Difference]: Finished difference. Result has 81 places, 105 transitions, 737 flow [2024-11-10 10:33:11,081 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=737, PETRI_PLACES=81, PETRI_TRANSITIONS=105} [2024-11-10 10:33:11,082 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 40 predicate places. [2024-11-10 10:33:11,082 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 105 transitions, 737 flow [2024-11-10 10:33:11,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 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 10:33:11,082 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:33:11,082 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 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 10:33:11,100 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 10:33:11,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:33:11,283 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 10:33:11,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:33:11,284 INFO L85 PathProgramCache]: Analyzing trace with hash -41871689, now seen corresponding path program 3 times [2024-11-10 10:33:11,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:33:11,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643069718] [2024-11-10 10:33:11,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:33:11,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:33:11,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:33:11,420 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:33:11,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:33:11,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643069718] [2024-11-10 10:33:11,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643069718] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:33:11,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813992478] [2024-11-10 10:33:11,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 10:33:11,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:33:11,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:33:11,424 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:33:11,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 10:33:11,512 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-10 10:33:11,513 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:33:11,515 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 10:33:11,517 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:33:11,620 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:33:11,620 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:33:11,715 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:33:11,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813992478] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 10:33:11,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 10:33:11,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 14 [2024-11-10 10:33:11,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868589581] [2024-11-10 10:33:11,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:33:11,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 10:33:11,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:33:11,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 10:33:11,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2024-11-10 10:33:11,743 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-11-10 10:33:11,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 105 transitions, 737 flow. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 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 10:33:11,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:33:11,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-11-10 10:33:11,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:33:12,633 INFO L124 PetriNetUnfolderBase]: 3934/5914 cut-off events. [2024-11-10 10:33:12,633 INFO L125 PetriNetUnfolderBase]: For 15834/15840 co-relation queries the response was YES. [2024-11-10 10:33:12,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22327 conditions, 5914 events. 3934/5914 cut-off events. For 15834/15840 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 35642 event pairs, 1108 based on Foata normal form. 30/5890 useless extension candidates. Maximal degree in co-relation 22303. Up to 1371 conditions per place. [2024-11-10 10:33:12,748 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 155 selfloop transitions, 57 changer transitions 0/218 dead transitions. [2024-11-10 10:33:12,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 218 transitions, 1729 flow [2024-11-10 10:33:12,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 10:33:12,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-10 10:33:12,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 249 transitions. [2024-11-10 10:33:12,750 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5264270613107822 [2024-11-10 10:33:12,750 INFO L175 Difference]: Start difference. First operand has 81 places, 105 transitions, 737 flow. Second operand 11 states and 249 transitions. [2024-11-10 10:33:12,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 218 transitions, 1729 flow [2024-11-10 10:33:12,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 218 transitions, 1690 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-11-10 10:33:12,814 INFO L231 Difference]: Finished difference. Result has 92 places, 122 transitions, 1012 flow [2024-11-10 10:33:12,814 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1012, PETRI_PLACES=92, PETRI_TRANSITIONS=122} [2024-11-10 10:33:12,815 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 51 predicate places. [2024-11-10 10:33:12,815 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 122 transitions, 1012 flow [2024-11-10 10:33:12,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 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 10:33:12,815 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:33:12,816 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 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 10:33:12,836 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 10:33:13,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:33:13,017 INFO L396 AbstractCegarLoop]: === Iteration 7 === 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 10:33:13,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:33:13,018 INFO L85 PathProgramCache]: Analyzing trace with hash 952461807, now seen corresponding path program 4 times [2024-11-10 10:33:13,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:33:13,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339109361] [2024-11-10 10:33:13,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:33:13,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:33:13,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:33:13,162 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:33:13,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:33:13,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339109361] [2024-11-10 10:33:13,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339109361] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:33:13,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396093219] [2024-11-10 10:33:13,163 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 10:33:13,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:33:13,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:33:13,165 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:33:13,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 10:33:13,250 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 10:33:13,250 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:33:13,252 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 10:33:13,253 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:33:13,325 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:33:13,326 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:33:13,404 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:33:13,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396093219] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 10:33:13,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 10:33:13,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2024-11-10 10:33:13,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796509959] [2024-11-10 10:33:13,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:33:13,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 10:33:13,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:33:13,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 10:33:13,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-10 10:33:13,419 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-11-10 10:33:13,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 122 transitions, 1012 flow. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 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 10:33:13,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:33:13,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-11-10 10:33:13,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:33:14,441 INFO L124 PetriNetUnfolderBase]: 3959/5992 cut-off events. [2024-11-10 10:33:14,441 INFO L125 PetriNetUnfolderBase]: For 21625/21685 co-relation queries the response was YES. [2024-11-10 10:33:14,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24357 conditions, 5992 events. 3959/5992 cut-off events. For 21625/21685 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 35999 event pairs, 931 based on Foata normal form. 24/5947 useless extension candidates. Maximal degree in co-relation 24329. Up to 1191 conditions per place. [2024-11-10 10:33:14,487 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 156 selfloop transitions, 64 changer transitions 0/226 dead transitions. [2024-11-10 10:33:14,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 226 transitions, 2012 flow [2024-11-10 10:33:14,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 10:33:14,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-10 10:33:14,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 248 transitions. [2024-11-10 10:33:14,490 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4806201550387597 [2024-11-10 10:33:14,490 INFO L175 Difference]: Start difference. First operand has 92 places, 122 transitions, 1012 flow. Second operand 12 states and 248 transitions. [2024-11-10 10:33:14,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 226 transitions, 2012 flow [2024-11-10 10:33:14,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 226 transitions, 1979 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-11-10 10:33:14,569 INFO L231 Difference]: Finished difference. Result has 106 places, 134 transitions, 1339 flow [2024-11-10 10:33:14,570 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=985, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1339, PETRI_PLACES=106, PETRI_TRANSITIONS=134} [2024-11-10 10:33:14,570 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 65 predicate places. [2024-11-10 10:33:14,570 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 134 transitions, 1339 flow [2024-11-10 10:33:14,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 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 10:33:14,570 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:33:14,570 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 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 10:33:14,583 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 10:33:14,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:33:14,771 INFO L396 AbstractCegarLoop]: === Iteration 8 === 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 10:33:14,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:33:14,772 INFO L85 PathProgramCache]: Analyzing trace with hash -974543221, now seen corresponding path program 5 times [2024-11-10 10:33:14,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:33:14,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593957735] [2024-11-10 10:33:14,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:33:14,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:33:14,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:33:14,902 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:33:14,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:33:14,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593957735] [2024-11-10 10:33:14,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593957735] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:33:14,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948558071] [2024-11-10 10:33:14,906 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 10:33:14,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:33:14,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:33:14,908 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:33:14,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 10:33:15,005 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:33:15,006 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:33:15,007 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 10:33:15,008 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:33:15,099 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:33:15,101 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:33:15,171 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:33:15,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948558071] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:33:15,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:33:15,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 13 [2024-11-10 10:33:15,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758083509] [2024-11-10 10:33:15,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:33:15,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-10 10:33:15,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:33:15,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-10 10:33:15,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-11-10 10:33:15,192 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-11-10 10:33:15,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 134 transitions, 1339 flow. Second operand has 13 states, 13 states have (on average 12.538461538461538) internal successors, (163), 13 states have internal predecessors, (163), 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 10:33:15,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:33:15,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-11-10 10:33:15,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:33:17,397 INFO L124 PetriNetUnfolderBase]: 6593/9998 cut-off events. [2024-11-10 10:33:17,397 INFO L125 PetriNetUnfolderBase]: For 50122/50163 co-relation queries the response was YES. [2024-11-10 10:33:17,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42360 conditions, 9998 events. 6593/9998 cut-off events. For 50122/50163 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 61740 event pairs, 800 based on Foata normal form. 39/9993 useless extension candidates. Maximal degree in co-relation 42326. Up to 1626 conditions per place. [2024-11-10 10:33:17,616 INFO L140 encePairwiseOnDemand]: 27/43 looper letters, 298 selfloop transitions, 243 changer transitions 0/548 dead transitions. [2024-11-10 10:33:17,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 548 transitions, 5663 flow [2024-11-10 10:33:17,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-10 10:33:17,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-10 10:33:17,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 609 transitions. [2024-11-10 10:33:17,619 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4720930232558139 [2024-11-10 10:33:17,619 INFO L175 Difference]: Start difference. First operand has 106 places, 134 transitions, 1339 flow. Second operand 30 states and 609 transitions. [2024-11-10 10:33:17,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 548 transitions, 5663 flow [2024-11-10 10:33:17,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 548 transitions, 5522 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-11-10 10:33:17,862 INFO L231 Difference]: Finished difference. Result has 148 places, 311 transitions, 4059 flow [2024-11-10 10:33:17,862 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1278, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=4059, PETRI_PLACES=148, PETRI_TRANSITIONS=311} [2024-11-10 10:33:17,863 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 107 predicate places. [2024-11-10 10:33:17,863 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 311 transitions, 4059 flow [2024-11-10 10:33:17,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.538461538461538) internal successors, (163), 13 states have internal predecessors, (163), 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 10:33:17,863 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:33:17,863 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 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 10:33:17,876 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 10:33:18,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:33:18,064 INFO L396 AbstractCegarLoop]: === Iteration 9 === 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 10:33:18,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:33:18,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1969592167, now seen corresponding path program 6 times [2024-11-10 10:33:18,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:33:18,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237929131] [2024-11-10 10:33:18,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:33:18,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:33:18,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:33:18,180 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:33:18,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:33:18,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237929131] [2024-11-10 10:33:18,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237929131] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:33:18,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30056998] [2024-11-10 10:33:18,181 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-10 10:33:18,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:33:18,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:33:18,183 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:33:18,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 10:33:18,261 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-10 10:33:18,262 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:33:18,263 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 10:33:18,265 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:33:18,359 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:33:18,360 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:33:18,433 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:33:18,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30056998] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 10:33:18,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 10:33:18,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 13 [2024-11-10 10:33:18,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305997509] [2024-11-10 10:33:18,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:33:18,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 10:33:18,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:33:18,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 10:33:18,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-10 10:33:18,453 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-11-10 10:33:18,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 311 transitions, 4059 flow. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 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 10:33:18,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:33:18,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-11-10 10:33:18,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:33:19,625 INFO L124 PetriNetUnfolderBase]: 5021/7622 cut-off events. [2024-11-10 10:33:19,625 INFO L125 PetriNetUnfolderBase]: For 63169/63263 co-relation queries the response was YES. [2024-11-10 10:33:19,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39070 conditions, 7622 events. 5021/7622 cut-off events. For 63169/63263 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 47178 event pairs, 1167 based on Foata normal form. 26/7518 useless extension candidates. Maximal degree in co-relation 39018. Up to 1779 conditions per place. [2024-11-10 10:33:19,728 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 213 selfloop transitions, 180 changer transitions 0/399 dead transitions. [2024-11-10 10:33:19,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 399 transitions, 5404 flow [2024-11-10 10:33:19,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 10:33:19,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 10:33:19,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 223 transitions. [2024-11-10 10:33:19,730 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5186046511627908 [2024-11-10 10:33:19,730 INFO L175 Difference]: Start difference. First operand has 148 places, 311 transitions, 4059 flow. Second operand 10 states and 223 transitions. [2024-11-10 10:33:19,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 399 transitions, 5404 flow [2024-11-10 10:33:20,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 399 transitions, 5296 flow, removed 46 selfloop flow, removed 3 redundant places. [2024-11-10 10:33:20,015 INFO L231 Difference]: Finished difference. Result has 156 places, 316 transitions, 4548 flow [2024-11-10 10:33:20,018 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3917, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4548, PETRI_PLACES=156, PETRI_TRANSITIONS=316} [2024-11-10 10:33:20,019 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 115 predicate places. [2024-11-10 10:33:20,019 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 316 transitions, 4548 flow [2024-11-10 10:33:20,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 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 10:33:20,019 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:33:20,019 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 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 10:33:20,038 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-10 10:33:20,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:33:20,221 INFO L396 AbstractCegarLoop]: === Iteration 10 === 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 10:33:20,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:33:20,221 INFO L85 PathProgramCache]: Analyzing trace with hash -2099654972, now seen corresponding path program 1 times [2024-11-10 10:33:20,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:33:20,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626050662] [2024-11-10 10:33:20,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:33:20,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:33:20,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:33:20,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:33:20,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:33:20,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626050662] [2024-11-10 10:33:20,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626050662] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:33:20,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:33:20,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:33:20,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511858638] [2024-11-10 10:33:20,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:33:20,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:33:20,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:33:20,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:33:20,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-10 10:33:20,356 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-11-10 10:33:20,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 316 transitions, 4548 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 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 10:33:20,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:33:20,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-11-10 10:33:20,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:33:21,157 INFO L124 PetriNetUnfolderBase]: 3291/5361 cut-off events. [2024-11-10 10:33:21,157 INFO L125 PetriNetUnfolderBase]: For 60146/60454 co-relation queries the response was YES. [2024-11-10 10:33:21,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29350 conditions, 5361 events. 3291/5361 cut-off events. For 60146/60454 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 34817 event pairs, 1186 based on Foata normal form. 90/5304 useless extension candidates. Maximal degree in co-relation 29296. Up to 4017 conditions per place. [2024-11-10 10:33:21,229 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 295 selfloop transitions, 9 changer transitions 0/323 dead transitions. [2024-11-10 10:33:21,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 323 transitions, 5184 flow [2024-11-10 10:33:21,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:33:21,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:33:21,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2024-11-10 10:33:21,231 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49224806201550386 [2024-11-10 10:33:21,231 INFO L175 Difference]: Start difference. First operand has 156 places, 316 transitions, 4548 flow. Second operand 6 states and 127 transitions. [2024-11-10 10:33:21,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 323 transitions, 5184 flow [2024-11-10 10:33:21,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 323 transitions, 5087 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-11-10 10:33:21,418 INFO L231 Difference]: Finished difference. Result has 150 places, 294 transitions, 4336 flow [2024-11-10 10:33:21,419 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4301, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4336, PETRI_PLACES=150, PETRI_TRANSITIONS=294} [2024-11-10 10:33:21,419 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 109 predicate places. [2024-11-10 10:33:21,420 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 294 transitions, 4336 flow [2024-11-10 10:33:21,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 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 10:33:21,420 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:33:21,420 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 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 10:33:21,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-10 10:33:21,420 INFO L396 AbstractCegarLoop]: === Iteration 11 === 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 10:33:21,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:33:21,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1913542034, now seen corresponding path program 1 times [2024-11-10 10:33:21,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:33:21,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376782514] [2024-11-10 10:33:21,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:33:21,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:33:21,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:33:21,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:33:21,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:33:21,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376782514] [2024-11-10 10:33:21,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376782514] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:33:21,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:33:21,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:33:21,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152376262] [2024-11-10 10:33:21,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:33:21,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:33:21,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:33:21,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:33:21,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-10 10:33:21,534 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-11-10 10:33:21,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 294 transitions, 4336 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 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 10:33:21,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:33:21,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-11-10 10:33:21,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:33:22,181 INFO L124 PetriNetUnfolderBase]: 3405/5300 cut-off events. [2024-11-10 10:33:22,182 INFO L125 PetriNetUnfolderBase]: For 57006/57126 co-relation queries the response was YES. [2024-11-10 10:33:22,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29238 conditions, 5300 events. 3405/5300 cut-off events. For 57006/57126 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 31711 event pairs, 1065 based on Foata normal form. 36/5258 useless extension candidates. Maximal degree in co-relation 29187. Up to 3791 conditions per place. [2024-11-10 10:33:22,239 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 265 selfloop transitions, 28 changer transitions 25/332 dead transitions. [2024-11-10 10:33:22,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 332 transitions, 5344 flow [2024-11-10 10:33:22,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 10:33:22,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 10:33:22,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-11-10 10:33:22,240 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45182724252491696 [2024-11-10 10:33:22,240 INFO L175 Difference]: Start difference. First operand has 150 places, 294 transitions, 4336 flow. Second operand 7 states and 136 transitions. [2024-11-10 10:33:22,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 332 transitions, 5344 flow [2024-11-10 10:33:22,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 332 transitions, 5159 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-11-10 10:33:22,482 INFO L231 Difference]: Finished difference. Result has 142 places, 274 transitions, 4080 flow [2024-11-10 10:33:22,482 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4072, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4080, PETRI_PLACES=142, PETRI_TRANSITIONS=274} [2024-11-10 10:33:22,482 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 101 predicate places. [2024-11-10 10:33:22,482 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 274 transitions, 4080 flow [2024-11-10 10:33:22,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 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 10:33:22,483 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:33:22,483 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 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 10:33:22,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-10 10:33:22,483 INFO L396 AbstractCegarLoop]: === Iteration 12 === 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 10:33:22,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:33:22,484 INFO L85 PathProgramCache]: Analyzing trace with hash 412686696, now seen corresponding path program 1 times [2024-11-10 10:33:22,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:33:22,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571439737] [2024-11-10 10:33:22,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:33:22,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:33:22,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:33:22,555 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:33:22,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:33:22,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571439737] [2024-11-10 10:33:22,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571439737] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:33:22,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388398318] [2024-11-10 10:33:22,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:33:22,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:33:22,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:33:22,558 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:33:22,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 10:33:22,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:33:22,645 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 10:33:22,647 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:33:22,682 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:33:22,683 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:33:22,722 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:33:22,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388398318] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 10:33:22,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 10:33:22,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-11-10 10:33:22,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456931012] [2024-11-10 10:33:22,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:33:22,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:33:22,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:33:22,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:33:22,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-10 10:33:22,732 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-11-10 10:33:22,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 274 transitions, 4080 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 10:33:22,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:33:22,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-11-10 10:33:22,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:33:23,493 INFO L124 PetriNetUnfolderBase]: 3752/5818 cut-off events. [2024-11-10 10:33:23,493 INFO L125 PetriNetUnfolderBase]: For 66105/66553 co-relation queries the response was YES. [2024-11-10 10:33:23,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32744 conditions, 5818 events. 3752/5818 cut-off events. For 66105/66553 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 34789 event pairs, 1175 based on Foata normal form. 353/6052 useless extension candidates. Maximal degree in co-relation 32698. Up to 4268 conditions per place. [2024-11-10 10:33:23,542 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 366 selfloop transitions, 15 changer transitions 0/399 dead transitions. [2024-11-10 10:33:23,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 399 transitions, 6837 flow [2024-11-10 10:33:23,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 10:33:23,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 10:33:23,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 96 transitions. [2024-11-10 10:33:23,543 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44651162790697674 [2024-11-10 10:33:23,544 INFO L175 Difference]: Start difference. First operand has 142 places, 274 transitions, 4080 flow. Second operand 5 states and 96 transitions. [2024-11-10 10:33:23,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 399 transitions, 6837 flow [2024-11-10 10:33:23,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 399 transitions, 6615 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-11-10 10:33:23,729 INFO L231 Difference]: Finished difference. Result has 132 places, 275 transitions, 3974 flow [2024-11-10 10:33:23,730 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3923, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3974, PETRI_PLACES=132, PETRI_TRANSITIONS=275} [2024-11-10 10:33:23,730 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 91 predicate places. [2024-11-10 10:33:23,730 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 275 transitions, 3974 flow [2024-11-10 10:33:23,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 10:33:23,731 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:33:23,731 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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 10:33:23,743 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-10 10:33:23,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:33:23,932 INFO L396 AbstractCegarLoop]: === Iteration 13 === 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 10:33:23,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:33:23,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1596113527, now seen corresponding path program 1 times [2024-11-10 10:33:23,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:33:23,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591716141] [2024-11-10 10:33:23,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:33:23,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:33:23,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:33:24,467 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:33:24,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:33:24,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591716141] [2024-11-10 10:33:24,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591716141] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:33:24,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813964073] [2024-11-10 10:33:24,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:33:24,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:33:24,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:33:24,470 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:33:24,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 10:33:24,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:33:24,552 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-10 10:33:24,554 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:33:24,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-10 10:33:24,696 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:33:24,696 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:33:24,777 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:33:24,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 16 [2024-11-10 10:33:24,823 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:33:24,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813964073] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:33:24,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:33:24,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 6] total 18 [2024-11-10 10:33:24,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497988239] [2024-11-10 10:33:24,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:33:24,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-10 10:33:24,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:33:24,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-10 10:33:24,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-11-10 10:33:24,875 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-11-10 10:33:24,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 275 transitions, 3974 flow. Second operand has 19 states, 19 states have (on average 14.789473684210526) internal successors, (281), 19 states have internal predecessors, (281), 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 10:33:24,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:33:24,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-11-10 10:33:24,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:33:26,412 INFO L124 PetriNetUnfolderBase]: 4487/7215 cut-off events. [2024-11-10 10:33:26,412 INFO L125 PetriNetUnfolderBase]: For 68545/69276 co-relation queries the response was YES. [2024-11-10 10:33:26,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38669 conditions, 7215 events. 4487/7215 cut-off events. For 68545/69276 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 47643 event pairs, 200 based on Foata normal form. 76/7239 useless extension candidates. Maximal degree in co-relation 38626. Up to 4311 conditions per place. [2024-11-10 10:33:26,475 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 538 selfloop transitions, 143 changer transitions 1/702 dead transitions. [2024-11-10 10:33:26,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 702 transitions, 10873 flow [2024-11-10 10:33:26,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-10 10:33:26,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-10 10:33:26,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 316 transitions. [2024-11-10 10:33:26,477 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5249169435215947 [2024-11-10 10:33:26,477 INFO L175 Difference]: Start difference. First operand has 132 places, 275 transitions, 3974 flow. Second operand 14 states and 316 transitions. [2024-11-10 10:33:26,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 702 transitions, 10873 flow [2024-11-10 10:33:26,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 702 transitions, 10845 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 10:33:26,756 INFO L231 Difference]: Finished difference. Result has 147 places, 413 transitions, 6607 flow [2024-11-10 10:33:26,757 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3957, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=6607, PETRI_PLACES=147, PETRI_TRANSITIONS=413} [2024-11-10 10:33:26,757 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 106 predicate places. [2024-11-10 10:33:26,758 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 413 transitions, 6607 flow [2024-11-10 10:33:26,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 14.789473684210526) internal successors, (281), 19 states have internal predecessors, (281), 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 10:33:26,758 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:33:26,758 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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 10:33:26,773 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-10 10:33:26,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-10 10:33:26,959 INFO L396 AbstractCegarLoop]: === Iteration 14 === 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 10:33:26,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:33:26,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1017215043, now seen corresponding path program 1 times [2024-11-10 10:33:26,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:33:26,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861057375] [2024-11-10 10:33:26,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:33:26,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:33:26,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:33:27,633 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:33:27,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:33:27,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861057375] [2024-11-10 10:33:27,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861057375] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:33:27,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605109531] [2024-11-10 10:33:27,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:33:27,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:33:27,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:33:27,636 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:33:27,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-10 10:33:27,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:33:27,725 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-10 10:33:27,729 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:33:27,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-10 10:33:28,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-10 10:33:28,030 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:33:28,030 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:33:28,260 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:33:28,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605109531] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:33:28,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:33:28,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 9] total 24 [2024-11-10 10:33:28,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131716311] [2024-11-10 10:33:28,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:33:28,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-10 10:33:28,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:33:28,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-10 10:33:28,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2024-11-10 10:33:28,477 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-11-10 10:33:28,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 413 transitions, 6607 flow. Second operand has 25 states, 25 states have (on average 12.52) internal successors, (313), 25 states have internal predecessors, (313), 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 10:33:28,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:33:28,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-11-10 10:33:28,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:33:32,223 INFO L124 PetriNetUnfolderBase]: 8326/12966 cut-off events. [2024-11-10 10:33:32,224 INFO L125 PetriNetUnfolderBase]: For 125782/126992 co-relation queries the response was YES. [2024-11-10 10:33:32,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72862 conditions, 12966 events. 8326/12966 cut-off events. For 125782/126992 co-relation queries the response was YES. Maximal size of possible extension queue 724. Compared 88199 event pairs, 552 based on Foata normal form. 111/13013 useless extension candidates. Maximal degree in co-relation 72814. Up to 7442 conditions per place. [2024-11-10 10:33:32,322 INFO L140 encePairwiseOnDemand]: 26/43 looper letters, 780 selfloop transitions, 497 changer transitions 1/1289 dead transitions. [2024-11-10 10:33:32,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 1289 transitions, 20045 flow [2024-11-10 10:33:32,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-10 10:33:32,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2024-11-10 10:33:32,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 877 transitions. [2024-11-10 10:33:32,326 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39990880072959417 [2024-11-10 10:33:32,326 INFO L175 Difference]: Start difference. First operand has 147 places, 413 transitions, 6607 flow. Second operand 51 states and 877 transitions. [2024-11-10 10:33:32,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 1289 transitions, 20045 flow [2024-11-10 10:33:32,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 1289 transitions, 19855 flow, removed 60 selfloop flow, removed 3 redundant places. [2024-11-10 10:33:33,001 INFO L231 Difference]: Finished difference. Result has 217 places, 868 transitions, 14723 flow [2024-11-10 10:33:33,002 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6562, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=14723, PETRI_PLACES=217, PETRI_TRANSITIONS=868} [2024-11-10 10:33:33,002 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 176 predicate places. [2024-11-10 10:33:33,002 INFO L471 AbstractCegarLoop]: Abstraction has has 217 places, 868 transitions, 14723 flow [2024-11-10 10:33:33,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 12.52) internal successors, (313), 25 states have internal predecessors, (313), 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 10:33:33,003 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:33:33,003 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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 10:33:33,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-10 10:33:33,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-10 10:33:33,203 INFO L396 AbstractCegarLoop]: === Iteration 15 === 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 10:33:33,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:33:33,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1445616241, now seen corresponding path program 2 times [2024-11-10 10:33:33,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:33:33,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486682893] [2024-11-10 10:33:33,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:33:33,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:33:33,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:33:33,681 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:33:33,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:33:33,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486682893] [2024-11-10 10:33:33,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486682893] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:33:33,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023279752] [2024-11-10 10:33:33,682 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:33:33,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:33:33,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:33:33,684 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:33:33,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-10 10:33:33,763 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:33:33,763 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:33:33,765 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-10 10:33:33,767 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:33:33,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-10 10:33:34,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-10 10:33:34,087 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:33:34,087 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:33:34,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 29 [2024-11-10 10:33:34,488 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:33:34,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 62 [2024-11-10 10:33:34,625 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:33:34,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023279752] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:33:34,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:33:34,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 24 [2024-11-10 10:33:34,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833800290] [2024-11-10 10:33:34,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:33:34,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-10 10:33:34,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:33:34,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-10 10:33:34,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2024-11-10 10:33:34,725 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-11-10 10:33:34,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 868 transitions, 14723 flow. Second operand has 25 states, 25 states have (on average 11.24) internal successors, (281), 25 states have internal predecessors, (281), 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 10:33:34,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:33:34,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-11-10 10:33:34,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:33:40,590 INFO L124 PetriNetUnfolderBase]: 15926/24206 cut-off events. [2024-11-10 10:33:40,591 INFO L125 PetriNetUnfolderBase]: For 278633/278811 co-relation queries the response was YES. [2024-11-10 10:33:40,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148054 conditions, 24206 events. 15926/24206 cut-off events. For 278633/278811 co-relation queries the response was YES. Maximal size of possible extension queue 1190. Compared 168972 event pairs, 900 based on Foata normal form. 83/24209 useless extension candidates. Maximal degree in co-relation 147983. Up to 14676 conditions per place. [2024-11-10 10:33:40,899 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 1170 selfloop transitions, 430 changer transitions 5/1638 dead transitions. [2024-11-10 10:33:40,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 1638 transitions, 29355 flow [2024-11-10 10:33:40,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-10 10:33:40,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-10 10:33:40,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 405 transitions. [2024-11-10 10:33:40,901 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47093023255813954 [2024-11-10 10:33:40,901 INFO L175 Difference]: Start difference. First operand has 217 places, 868 transitions, 14723 flow. Second operand 20 states and 405 transitions. [2024-11-10 10:33:40,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 1638 transitions, 29355 flow [2024-11-10 10:33:43,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 1638 transitions, 29137 flow, removed 108 selfloop flow, removed 1 redundant places. [2024-11-10 10:33:43,533 INFO L231 Difference]: Finished difference. Result has 243 places, 1170 transitions, 20416 flow [2024-11-10 10:33:43,534 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=14571, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=868, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=583, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=20416, PETRI_PLACES=243, PETRI_TRANSITIONS=1170} [2024-11-10 10:33:43,534 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 202 predicate places. [2024-11-10 10:33:43,534 INFO L471 AbstractCegarLoop]: Abstraction has has 243 places, 1170 transitions, 20416 flow [2024-11-10 10:33:43,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 11.24) internal successors, (281), 25 states have internal predecessors, (281), 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 10:33:43,535 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:33:43,535 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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 10:33:43,547 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-10 10:33:43,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-10 10:33:43,736 INFO L396 AbstractCegarLoop]: === Iteration 16 === 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 10:33:43,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:33:43,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1608662535, now seen corresponding path program 3 times [2024-11-10 10:33:43,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:33:43,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152488724] [2024-11-10 10:33:43,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:33:43,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:33:43,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:33:44,205 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:33:44,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:33:44,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152488724] [2024-11-10 10:33:44,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152488724] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:33:44,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118580517] [2024-11-10 10:33:44,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 10:33:44,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:33:44,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:33:44,208 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:33:44,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-10 10:33:44,291 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-10 10:33:44,291 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:33:44,292 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-10 10:33:44,294 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:33:44,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-10 10:33:44,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-10 10:33:44,616 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:33:44,616 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:33:44,776 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:33:44,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118580517] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:33:44,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:33:44,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 9] total 24 [2024-11-10 10:33:44,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787452393] [2024-11-10 10:33:44,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:33:44,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-10 10:33:44,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:33:44,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-10 10:33:44,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2024-11-10 10:33:44,873 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-11-10 10:33:44,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 1170 transitions, 20416 flow. Second operand has 25 states, 25 states have (on average 11.64) internal successors, (291), 25 states have internal predecessors, (291), 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 10:33:44,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:33:44,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-11-10 10:33:44,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:33:53,049 INFO L124 PetriNetUnfolderBase]: 18704/28219 cut-off events. [2024-11-10 10:33:53,049 INFO L125 PetriNetUnfolderBase]: For 369894/370963 co-relation queries the response was YES. [2024-11-10 10:33:53,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187350 conditions, 28219 events. 18704/28219 cut-off events. For 369894/370963 co-relation queries the response was YES. Maximal size of possible extension queue 1377. Compared 199960 event pairs, 2036 based on Foata normal form. 385/28347 useless extension candidates. Maximal degree in co-relation 187270. Up to 18823 conditions per place. [2024-11-10 10:33:53,440 INFO L140 encePairwiseOnDemand]: 26/43 looper letters, 1188 selfloop transitions, 612 changer transitions 1/1833 dead transitions. [2024-11-10 10:33:53,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 1833 transitions, 33610 flow [2024-11-10 10:33:53,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-10 10:33:53,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2024-11-10 10:33:53,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 738 transitions. [2024-11-10 10:33:53,443 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3991346673877772 [2024-11-10 10:33:53,443 INFO L175 Difference]: Start difference. First operand has 243 places, 1170 transitions, 20416 flow. Second operand 43 states and 738 transitions. [2024-11-10 10:33:53,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 1833 transitions, 33610 flow [2024-11-10 10:33:57,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 1833 transitions, 33383 flow, removed 110 selfloop flow, removed 3 redundant places. [2024-11-10 10:33:57,920 INFO L231 Difference]: Finished difference. Result has 297 places, 1401 transitions, 26231 flow [2024-11-10 10:33:57,921 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=20229, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=407, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=672, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=26231, PETRI_PLACES=297, PETRI_TRANSITIONS=1401} [2024-11-10 10:33:57,922 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 256 predicate places. [2024-11-10 10:33:57,922 INFO L471 AbstractCegarLoop]: Abstraction has has 297 places, 1401 transitions, 26231 flow [2024-11-10 10:33:57,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 11.64) internal successors, (291), 25 states have internal predecessors, (291), 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 10:33:57,922 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:33:57,922 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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 10:33:57,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-10 10:33:58,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-10 10:33:58,123 INFO L396 AbstractCegarLoop]: === Iteration 17 === 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 10:33:58,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:33:58,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1255373133, now seen corresponding path program 2 times [2024-11-10 10:33:58,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:33:58,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081888519] [2024-11-10 10:33:58,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:33:58,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:33:58,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:33:58,491 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:33:58,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:33:58,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081888519] [2024-11-10 10:33:58,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081888519] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:33:58,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242415814] [2024-11-10 10:33:58,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:33:58,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:33:58,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:33:58,493 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:33:58,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-10 10:33:58,584 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:33:58,585 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:33:58,586 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-10 10:33:58,588 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:33:58,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-10 10:33:58,700 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:33:58,700 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:33:58,732 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:33:58,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 16 [2024-11-10 10:33:58,777 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:33:58,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242415814] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:33:58,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:33:58,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 6] total 15 [2024-11-10 10:33:58,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768717843] [2024-11-10 10:33:58,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:33:58,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-10 10:33:58,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:33:58,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-10 10:33:58,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-11-10 10:33:58,834 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-11-10 10:33:58,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 1401 transitions, 26231 flow. Second operand has 16 states, 16 states have (on average 14.625) internal successors, (234), 16 states have internal predecessors, (234), 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 10:33:58,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:33:58,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-11-10 10:33:58,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:34:05,956 INFO L124 PetriNetUnfolderBase]: 15542/24337 cut-off events. [2024-11-10 10:34:05,956 INFO L125 PetriNetUnfolderBase]: For 374079/377466 co-relation queries the response was YES. [2024-11-10 10:34:06,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173090 conditions, 24337 events. 15542/24337 cut-off events. For 374079/377466 co-relation queries the response was YES. Maximal size of possible extension queue 1458. Compared 183384 event pairs, 1198 based on Foata normal form. 377/24573 useless extension candidates. Maximal degree in co-relation 172994. Up to 17620 conditions per place. [2024-11-10 10:34:06,280 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 1429 selfloop transitions, 389 changer transitions 1/1885 dead transitions. [2024-11-10 10:34:06,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 1885 transitions, 37901 flow [2024-11-10 10:34:06,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 10:34:06,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-10 10:34:06,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 289 transitions. [2024-11-10 10:34:06,282 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.516994633273703 [2024-11-10 10:34:06,282 INFO L175 Difference]: Start difference. First operand has 297 places, 1401 transitions, 26231 flow. Second operand 13 states and 289 transitions. [2024-11-10 10:34:06,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 1885 transitions, 37901 flow [2024-11-10 10:34:10,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 1885 transitions, 37137 flow, removed 355 selfloop flow, removed 6 redundant places. [2024-11-10 10:34:10,041 INFO L231 Difference]: Finished difference. Result has 308 places, 1576 transitions, 29766 flow [2024-11-10 10:34:10,043 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=25610, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=248, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1083, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=29766, PETRI_PLACES=308, PETRI_TRANSITIONS=1576} [2024-11-10 10:34:10,043 INFO L277 CegarLoopForPetriNet]: 41 programPoint places, 267 predicate places. [2024-11-10 10:34:10,043 INFO L471 AbstractCegarLoop]: Abstraction has has 308 places, 1576 transitions, 29766 flow [2024-11-10 10:34:10,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 14.625) internal successors, (234), 16 states have internal predecessors, (234), 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 10:34:10,044 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:34:10,044 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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 10:34:10,062 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-10 10:34:10,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-10 10:34:10,245 INFO L396 AbstractCegarLoop]: === Iteration 18 === 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 10:34:10,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:34:10,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1160501667, now seen corresponding path program 3 times [2024-11-10 10:34:10,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:34:10,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117431063] [2024-11-10 10:34:10,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:34:10,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:34:10,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:34:10,727 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:34:10,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:34:10,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117431063] [2024-11-10 10:34:10,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117431063] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:34:10,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812243597] [2024-11-10 10:34:10,728 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 10:34:10,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:34:10,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:34:10,730 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:34:10,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-10 10:34:10,825 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-10 10:34:10,825 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:34:10,827 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-10 10:34:10,829 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:34:10,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-10 10:34:11,005 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:34:11,006 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:34:11,073 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:34:11,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 16 [2024-11-10 10:34:11,131 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:34:11,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812243597] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:34:11,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:34:11,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 6] total 19 [2024-11-10 10:34:11,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958087626] [2024-11-10 10:34:11,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:34:11,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-10 10:34:11,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:34:11,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-10 10:34:11,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2024-11-10 10:34:11,192 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-11-10 10:34:11,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 1576 transitions, 29766 flow. Second operand has 20 states, 20 states have (on average 14.75) internal successors, (295), 20 states have internal predecessors, (295), 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 10:34:11,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:34:11,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-11-10 10:34:11,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:34:19,752 INFO L124 PetriNetUnfolderBase]: 17294/27034 cut-off events. [2024-11-10 10:34:19,752 INFO L125 PetriNetUnfolderBase]: For 450221/454103 co-relation queries the response was YES. [2024-11-10 10:34:20,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199329 conditions, 27034 events. 17294/27034 cut-off events. For 450221/454103 co-relation queries the response was YES. Maximal size of possible extension queue 1586. Compared 205774 event pairs, 1410 based on Foata normal form. 455/27298 useless extension candidates. Maximal degree in co-relation 199227. Up to 21120 conditions per place. [2024-11-10 10:34:20,179 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 1603 selfloop transitions, 286 changer transitions 1/1956 dead transitions. [2024-11-10 10:34:20,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 1956 transitions, 40405 flow [2024-11-10 10:34:20,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 10:34:20,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-10 10:34:20,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 266 transitions. [2024-11-10 10:34:20,180 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5155038759689923 [2024-11-10 10:34:20,180 INFO L175 Difference]: Start difference. First operand has 308 places, 1576 transitions, 29766 flow. Second operand 12 states and 266 transitions. [2024-11-10 10:34:20,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 1956 transitions, 40405 flow