./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-bad-ring.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-bad-ring.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 be394a9cdc866c1e1426a3fe296e99873bcf37ee5e7e1c9e487b239a3e0a8fbe --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 10:31:33,928 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 10:31:34,005 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-10 10:31:34,013 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 10:31:34,015 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 10:31:34,041 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 10:31:34,043 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 10:31:34,044 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 10:31:34,044 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 10:31:34,048 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 10:31:34,048 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 10:31:34,049 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 10:31:34,049 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 10:31:34,050 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 10:31:34,050 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 10:31:34,050 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 10:31:34,051 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 10:31:34,053 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 10:31:34,053 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 10:31:34,053 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 10:31:34,053 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 10:31:34,054 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 10:31:34,054 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 10:31:34,055 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 10:31:34,055 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 10:31:34,055 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 10:31:34,055 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 10:31:34,056 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 10:31:34,056 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 10:31:34,056 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 10:31:34,056 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 10:31:34,057 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 10:31:34,057 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:31:34,057 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 10:31:34,057 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 10:31:34,058 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 10:31:34,058 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 10:31:34,059 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 10:31:34,059 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 10:31:34,060 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 10:31:34,061 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 10:31:34,061 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 10:31:34,061 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be394a9cdc866c1e1426a3fe296e99873bcf37ee5e7e1c9e487b239a3e0a8fbe [2024-11-10 10:31:34,329 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 10:31:34,352 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 10:31:34,354 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 10:31:34,356 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 10:31:34,356 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 10:31:34,357 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c [2024-11-10 10:31:35,798 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 10:31:36,034 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 10:31:36,036 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c [2024-11-10 10:31:36,049 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc7017be6/0d1aca47fd9b484ca30880a4966dbf83/FLAGf3ffd06d1 [2024-11-10 10:31:36,388 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc7017be6/0d1aca47fd9b484ca30880a4966dbf83 [2024-11-10 10:31:36,391 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 10:31:36,392 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 10:31:36,394 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 10:31:36,394 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 10:31:36,399 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 10:31:36,400 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:31:36" (1/1) ... [2024-11-10 10:31:36,401 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ff67de6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:36, skipping insertion in model container [2024-11-10 10:31:36,401 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:31:36" (1/1) ... [2024-11-10 10:31:36,431 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 10:31:36,638 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-bad-ring.wvr.c[3986,3999] [2024-11-10 10:31:36,651 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:31:36,662 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 10:31:36,711 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-bad-ring.wvr.c[3986,3999] [2024-11-10 10:31:36,717 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:31:36,743 INFO L204 MainTranslator]: Completed translation [2024-11-10 10:31:36,744 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:36 WrapperNode [2024-11-10 10:31:36,744 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 10:31:36,745 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 10:31:36,745 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 10:31:36,746 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 10:31:36,752 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:36" (1/1) ... [2024-11-10 10:31:36,761 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:36" (1/1) ... [2024-11-10 10:31:36,789 INFO L138 Inliner]: procedures = 24, calls = 46, calls flagged for inlining = 16, calls inlined = 20, statements flattened = 306 [2024-11-10 10:31:36,789 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 10:31:36,790 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 10:31:36,790 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 10:31:36,790 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 10:31:36,801 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:36" (1/1) ... [2024-11-10 10:31:36,803 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:36" (1/1) ... [2024-11-10 10:31:36,808 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:36" (1/1) ... [2024-11-10 10:31:36,830 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-10 10:31:36,831 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:36" (1/1) ... [2024-11-10 10:31:36,831 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:36" (1/1) ... [2024-11-10 10:31:36,843 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:36" (1/1) ... [2024-11-10 10:31:36,848 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:36" (1/1) ... [2024-11-10 10:31:36,850 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:36" (1/1) ... [2024-11-10 10:31:36,854 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:36" (1/1) ... [2024-11-10 10:31:36,858 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 10:31:36,861 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 10:31:36,861 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 10:31:36,862 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 10:31:36,863 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:36" (1/1) ... [2024-11-10 10:31:36,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:31:36,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:31:36,898 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 10:31:36,901 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 10:31:36,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 10:31:36,970 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 10:31:36,970 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 10:31:36,970 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 10:31:36,971 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 10:31:36,971 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-10 10:31:36,971 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-10 10:31:36,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 10:31:36,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 10:31:36,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 10:31:36,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 10:31:36,971 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-10 10:31:36,972 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-10 10:31:36,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 10:31:36,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 10:31:36,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 10:31:36,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 10:31:36,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 10:31:36,974 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 10:31:37,097 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 10:31:37,098 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 10:31:37,580 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 10:31:37,580 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 10:31:37,933 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 10:31:37,934 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 10:31:37,935 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:31:37 BoogieIcfgContainer [2024-11-10 10:31:37,935 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 10:31:37,938 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 10:31:37,938 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 10:31:37,943 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 10:31:37,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:31:36" (1/3) ... [2024-11-10 10:31:37,944 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72a9f94d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:31:37, skipping insertion in model container [2024-11-10 10:31:37,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:31:36" (2/3) ... [2024-11-10 10:31:37,946 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72a9f94d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:31:37, skipping insertion in model container [2024-11-10 10:31:37,946 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:31:37" (3/3) ... [2024-11-10 10:31:37,947 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring.wvr.c [2024-11-10 10:31:37,965 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 10:31:37,965 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-10 10:31:37,966 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 10:31:38,048 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-10 10:31:38,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 63 transitions, 147 flow [2024-11-10 10:31:38,133 INFO L124 PetriNetUnfolderBase]: 14/60 cut-off events. [2024-11-10 10:31:38,133 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 10:31:38,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 60 events. 14/60 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 100 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 45. Up to 3 conditions per place. [2024-11-10 10:31:38,138 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 63 transitions, 147 flow [2024-11-10 10:31:38,143 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 59 transitions, 136 flow [2024-11-10 10:31:38,152 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:31:38,158 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;@4a9a2aa9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:31:38,158 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-10 10:31:38,174 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:31:38,174 INFO L124 PetriNetUnfolderBase]: 14/58 cut-off events. [2024-11-10 10:31:38,174 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 10:31:38,174 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:38,175 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:31:38,176 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 10:31:38,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:38,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1333961179, now seen corresponding path program 1 times [2024-11-10 10:31:38,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:38,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142148065] [2024-11-10 10:31:38,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:38,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:38,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:38,478 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 10:31:38,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:38,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142148065] [2024-11-10 10:31:38,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142148065] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:31:38,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:31:38,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:31:38,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124152559] [2024-11-10 10:31:38,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:31:38,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 10:31:38,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:38,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 10:31:38,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 10:31:38,600 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 63 [2024-11-10 10:31:38,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 59 transitions, 136 flow. Second operand has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 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 10:31:38,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:38,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 63 [2024-11-10 10:31:38,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:38,905 INFO L124 PetriNetUnfolderBase]: 906/1583 cut-off events. [2024-11-10 10:31:38,905 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2024-11-10 10:31:38,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2899 conditions, 1583 events. 906/1583 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 8564 event pairs, 733 based on Foata normal form. 329/1724 useless extension candidates. Maximal degree in co-relation 2686. Up to 1207 conditions per place. [2024-11-10 10:31:38,931 INFO L140 encePairwiseOnDemand]: 55/63 looper letters, 31 selfloop transitions, 0 changer transitions 0/51 dead transitions. [2024-11-10 10:31:38,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 51 transitions, 182 flow [2024-11-10 10:31:38,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 10:31:38,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 10:31:38,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 85 transitions. [2024-11-10 10:31:38,945 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6746031746031746 [2024-11-10 10:31:38,947 INFO L175 Difference]: Start difference. First operand has 55 places, 59 transitions, 136 flow. Second operand 2 states and 85 transitions. [2024-11-10 10:31:38,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 51 transitions, 182 flow [2024-11-10 10:31:38,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 51 transitions, 170 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-10 10:31:38,958 INFO L231 Difference]: Finished difference. Result has 50 places, 51 transitions, 108 flow [2024-11-10 10:31:38,960 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=108, PETRI_PLACES=50, PETRI_TRANSITIONS=51} [2024-11-10 10:31:38,965 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, -5 predicate places. [2024-11-10 10:31:38,966 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 51 transitions, 108 flow [2024-11-10 10:31:38,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 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 10:31:38,966 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:38,967 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:31:38,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 10:31:38,967 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 10:31:38,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:38,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1347845485, now seen corresponding path program 1 times [2024-11-10 10:31:38,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:38,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767126129] [2024-11-10 10:31:38,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:38,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:39,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:39,260 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 10:31:39,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:39,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767126129] [2024-11-10 10:31:39,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767126129] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:31:39,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:31:39,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 10:31:39,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569067282] [2024-11-10 10:31:39,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:31:39,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:31:39,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:39,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:31:39,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 10:31:39,266 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 63 [2024-11-10 10:31:39,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 51 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:31:39,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:39,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 63 [2024-11-10 10:31:39,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:39,503 INFO L124 PetriNetUnfolderBase]: 797/1486 cut-off events. [2024-11-10 10:31:39,503 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-11-10 10:31:39,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2658 conditions, 1486 events. 797/1486 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 8182 event pairs, 261 based on Foata normal form. 15/1378 useless extension candidates. Maximal degree in co-relation 2655. Up to 794 conditions per place. [2024-11-10 10:31:39,513 INFO L140 encePairwiseOnDemand]: 60/63 looper letters, 42 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2024-11-10 10:31:39,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 64 transitions, 224 flow [2024-11-10 10:31:39,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 10:31:39,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 10:31:39,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2024-11-10 10:31:39,516 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6031746031746031 [2024-11-10 10:31:39,516 INFO L175 Difference]: Start difference. First operand has 50 places, 51 transitions, 108 flow. Second operand 3 states and 114 transitions. [2024-11-10 10:31:39,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 64 transitions, 224 flow [2024-11-10 10:31:39,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 64 transitions, 224 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 10:31:39,522 INFO L231 Difference]: Finished difference. Result has 53 places, 52 transitions, 120 flow [2024-11-10 10:31:39,522 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=53, PETRI_TRANSITIONS=52} [2024-11-10 10:31:39,523 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, -2 predicate places. [2024-11-10 10:31:39,523 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 52 transitions, 120 flow [2024-11-10 10:31:39,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:31:39,523 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:39,524 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:31:39,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 10:31:39,524 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 10:31:39,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:39,525 INFO L85 PathProgramCache]: Analyzing trace with hash 937923431, now seen corresponding path program 2 times [2024-11-10 10:31:39,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:39,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113189208] [2024-11-10 10:31:39,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:39,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:39,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:39,660 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 10:31:39,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:39,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113189208] [2024-11-10 10:31:39,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113189208] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:31:39,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:31:39,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 10:31:39,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923815508] [2024-11-10 10:31:39,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:31:39,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:31:39,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:39,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:31:39,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 10:31:39,665 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 63 [2024-11-10 10:31:39,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 52 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:31:39,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:39,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 63 [2024-11-10 10:31:39,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:40,038 INFO L124 PetriNetUnfolderBase]: 1432/2586 cut-off events. [2024-11-10 10:31:40,039 INFO L125 PetriNetUnfolderBase]: For 245/296 co-relation queries the response was YES. [2024-11-10 10:31:40,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5094 conditions, 2586 events. 1432/2586 cut-off events. For 245/296 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 16038 event pairs, 622 based on Foata normal form. 2/2396 useless extension candidates. Maximal degree in co-relation 5089. Up to 1069 conditions per place. [2024-11-10 10:31:40,055 INFO L140 encePairwiseOnDemand]: 60/63 looper letters, 48 selfloop transitions, 2 changer transitions 4/74 dead transitions. [2024-11-10 10:31:40,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 74 transitions, 284 flow [2024-11-10 10:31:40,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 10:31:40,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 10:31:40,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2024-11-10 10:31:40,057 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6455026455026455 [2024-11-10 10:31:40,058 INFO L175 Difference]: Start difference. First operand has 53 places, 52 transitions, 120 flow. Second operand 3 states and 122 transitions. [2024-11-10 10:31:40,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 74 transitions, 284 flow [2024-11-10 10:31:40,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 74 transitions, 281 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 10:31:40,060 INFO L231 Difference]: Finished difference. Result has 55 places, 53 transitions, 130 flow [2024-11-10 10:31:40,060 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=55, PETRI_TRANSITIONS=53} [2024-11-10 10:31:40,061 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 0 predicate places. [2024-11-10 10:31:40,061 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 53 transitions, 130 flow [2024-11-10 10:31:40,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:31:40,061 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:40,062 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:31:40,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 10:31:40,062 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 10:31:40,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:40,063 INFO L85 PathProgramCache]: Analyzing trace with hash -152417577, now seen corresponding path program 1 times [2024-11-10 10:31:40,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:40,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250503128] [2024-11-10 10:31:40,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:40,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:40,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:40,193 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 10:31:40,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:40,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250503128] [2024-11-10 10:31:40,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250503128] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:31:40,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:31:40,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 10:31:40,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488889670] [2024-11-10 10:31:40,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:31:40,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:31:40,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:40,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:31:40,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 10:31:40,200 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 63 [2024-11-10 10:31:40,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 53 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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 10:31:40,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:40,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 63 [2024-11-10 10:31:40,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:40,476 INFO L124 PetriNetUnfolderBase]: 1002/1896 cut-off events. [2024-11-10 10:31:40,476 INFO L125 PetriNetUnfolderBase]: For 216/252 co-relation queries the response was YES. [2024-11-10 10:31:40,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3719 conditions, 1896 events. 1002/1896 cut-off events. For 216/252 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 11517 event pairs, 465 based on Foata normal form. 44/1798 useless extension candidates. Maximal degree in co-relation 3713. Up to 797 conditions per place. [2024-11-10 10:31:40,488 INFO L140 encePairwiseOnDemand]: 60/63 looper letters, 39 selfloop transitions, 2 changer transitions 4/65 dead transitions. [2024-11-10 10:31:40,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 65 transitions, 250 flow [2024-11-10 10:31:40,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 10:31:40,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 10:31:40,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2024-11-10 10:31:40,490 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5978835978835979 [2024-11-10 10:31:40,490 INFO L175 Difference]: Start difference. First operand has 55 places, 53 transitions, 130 flow. Second operand 3 states and 113 transitions. [2024-11-10 10:31:40,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 65 transitions, 250 flow [2024-11-10 10:31:40,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 65 transitions, 248 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 10:31:40,493 INFO L231 Difference]: Finished difference. Result has 57 places, 54 transitions, 140 flow [2024-11-10 10:31:40,493 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=57, PETRI_TRANSITIONS=54} [2024-11-10 10:31:40,494 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 2 predicate places. [2024-11-10 10:31:40,494 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 54 transitions, 140 flow [2024-11-10 10:31:40,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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 10:31:40,494 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:40,495 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:31:40,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 10:31:40,495 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 10:31:40,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:40,496 INFO L85 PathProgramCache]: Analyzing trace with hash 397326135, now seen corresponding path program 2 times [2024-11-10 10:31:40,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:40,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704491061] [2024-11-10 10:31:40,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:40,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:40,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:40,699 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 10:31:40,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:40,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704491061] [2024-11-10 10:31:40,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704491061] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:31:40,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:31:40,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 10:31:40,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068660393] [2024-11-10 10:31:40,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:31:40,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:31:40,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:40,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:31:40,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 10:31:40,708 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 63 [2024-11-10 10:31:40,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 54 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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 10:31:40,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:40,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 63 [2024-11-10 10:31:40,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:41,054 INFO L124 PetriNetUnfolderBase]: 1031/1986 cut-off events. [2024-11-10 10:31:41,054 INFO L125 PetriNetUnfolderBase]: For 254/264 co-relation queries the response was YES. [2024-11-10 10:31:41,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4045 conditions, 1986 events. 1031/1986 cut-off events. For 254/264 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 11917 event pairs, 819 based on Foata normal form. 28/1881 useless extension candidates. Maximal degree in co-relation 4038. Up to 1473 conditions per place. [2024-11-10 10:31:41,067 INFO L140 encePairwiseOnDemand]: 56/63 looper letters, 36 selfloop transitions, 2 changer transitions 17/72 dead transitions. [2024-11-10 10:31:41,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 72 transitions, 289 flow [2024-11-10 10:31:41,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 10:31:41,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 10:31:41,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 155 transitions. [2024-11-10 10:31:41,070 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2024-11-10 10:31:41,072 INFO L175 Difference]: Start difference. First operand has 57 places, 54 transitions, 140 flow. Second operand 5 states and 155 transitions. [2024-11-10 10:31:41,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 72 transitions, 289 flow [2024-11-10 10:31:41,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 72 transitions, 287 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 10:31:41,074 INFO L231 Difference]: Finished difference. Result has 63 places, 55 transitions, 158 flow [2024-11-10 10:31:41,076 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=158, PETRI_PLACES=63, PETRI_TRANSITIONS=55} [2024-11-10 10:31:41,077 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 8 predicate places. [2024-11-10 10:31:41,078 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 55 transitions, 158 flow [2024-11-10 10:31:41,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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 10:31:41,079 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:41,079 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:31:41,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 10:31:41,079 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 10:31:41,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:41,080 INFO L85 PathProgramCache]: Analyzing trace with hash -317359745, now seen corresponding path program 1 times [2024-11-10 10:31:41,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:41,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212469942] [2024-11-10 10:31:41,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:41,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:41,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:41,300 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 10:31:41,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:41,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212469942] [2024-11-10 10:31:41,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212469942] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:31:41,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:31:41,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:31:41,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028597657] [2024-11-10 10:31:41,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:31:41,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:31:41,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:41,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:31:41,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 10:31:41,311 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 63 [2024-11-10 10:31:41,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 55 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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 10:31:41,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:41,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 63 [2024-11-10 10:31:41,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:41,647 INFO L124 PetriNetUnfolderBase]: 1152/2211 cut-off events. [2024-11-10 10:31:41,647 INFO L125 PetriNetUnfolderBase]: For 627/637 co-relation queries the response was YES. [2024-11-10 10:31:41,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4838 conditions, 2211 events. 1152/2211 cut-off events. For 627/637 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 13570 event pairs, 940 based on Foata normal form. 32/2089 useless extension candidates. Maximal degree in co-relation 4828. Up to 1474 conditions per place. [2024-11-10 10:31:41,656 INFO L140 encePairwiseOnDemand]: 57/63 looper letters, 37 selfloop transitions, 2 changer transitions 22/78 dead transitions. [2024-11-10 10:31:41,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 78 transitions, 336 flow [2024-11-10 10:31:41,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 10:31:41,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 10:31:41,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 158 transitions. [2024-11-10 10:31:41,658 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5015873015873016 [2024-11-10 10:31:41,658 INFO L175 Difference]: Start difference. First operand has 63 places, 55 transitions, 158 flow. Second operand 5 states and 158 transitions. [2024-11-10 10:31:41,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 78 transitions, 336 flow [2024-11-10 10:31:41,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 78 transitions, 332 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-10 10:31:41,661 INFO L231 Difference]: Finished difference. Result has 66 places, 56 transitions, 172 flow [2024-11-10 10:31:41,662 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=172, PETRI_PLACES=66, PETRI_TRANSITIONS=56} [2024-11-10 10:31:41,662 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 11 predicate places. [2024-11-10 10:31:41,662 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 56 transitions, 172 flow [2024-11-10 10:31:41,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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 10:31:41,663 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:41,663 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:31:41,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 10:31:41,664 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 10:31:41,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:41,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1372890359, now seen corresponding path program 1 times [2024-11-10 10:31:41,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:41,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770321452] [2024-11-10 10:31:41,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:41,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:41,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:41,828 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:31:41,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:41,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770321452] [2024-11-10 10:31:41,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770321452] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:31:41,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:31:41,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:31:41,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048812712] [2024-11-10 10:31:41,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:31:41,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:31:41,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:41,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:31:41,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 10:31:41,836 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 63 [2024-11-10 10:31:41,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 56 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 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 10:31:41,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:41,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 63 [2024-11-10 10:31:41,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:42,191 INFO L124 PetriNetUnfolderBase]: 1430/2767 cut-off events. [2024-11-10 10:31:42,192 INFO L125 PetriNetUnfolderBase]: For 869/915 co-relation queries the response was YES. [2024-11-10 10:31:42,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6089 conditions, 2767 events. 1430/2767 cut-off events. For 869/915 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 18162 event pairs, 1177 based on Foata normal form. 34/2602 useless extension candidates. Maximal degree in co-relation 6077. Up to 1475 conditions per place. [2024-11-10 10:31:42,205 INFO L140 encePairwiseOnDemand]: 58/63 looper letters, 38 selfloop transitions, 2 changer transitions 21/78 dead transitions. [2024-11-10 10:31:42,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 78 transitions, 361 flow [2024-11-10 10:31:42,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 10:31:42,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 10:31:42,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 156 transitions. [2024-11-10 10:31:42,207 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49523809523809526 [2024-11-10 10:31:42,207 INFO L175 Difference]: Start difference. First operand has 66 places, 56 transitions, 172 flow. Second operand 5 states and 156 transitions. [2024-11-10 10:31:42,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 78 transitions, 361 flow [2024-11-10 10:31:42,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 78 transitions, 347 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-11-10 10:31:42,211 INFO L231 Difference]: Finished difference. Result has 68 places, 57 transitions, 180 flow [2024-11-10 10:31:42,212 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=180, PETRI_PLACES=68, PETRI_TRANSITIONS=57} [2024-11-10 10:31:42,212 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 13 predicate places. [2024-11-10 10:31:42,213 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 57 transitions, 180 flow [2024-11-10 10:31:42,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 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 10:31:42,213 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:42,213 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:31:42,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 10:31:42,213 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 10:31:42,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:42,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1484184300, now seen corresponding path program 1 times [2024-11-10 10:31:42,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:42,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127428573] [2024-11-10 10:31:42,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:42,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:42,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:42,610 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:31:42,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:42,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127428573] [2024-11-10 10:31:42,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127428573] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:31:42,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116338580] [2024-11-10 10:31:42,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:42,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:31:42,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:31:42,615 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 10:31:42,616 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 10:31:42,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:42,781 INFO L255 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-10 10:31:42,789 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:31:43,084 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:31:43,084 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:31:43,133 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 12 treesize of output 4 [2024-11-10 10:31:43,416 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:31:43,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116338580] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:31:43,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:31:43,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2024-11-10 10:31:43,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553385301] [2024-11-10 10:31:43,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:31:43,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-10 10:31:43,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:43,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-10 10:31:43,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2024-11-10 10:31:43,451 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 63 [2024-11-10 10:31:43,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 57 transitions, 180 flow. Second operand has 16 states, 16 states have (on average 25.0) internal successors, (400), 16 states have internal predecessors, (400), 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 10:31:43,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:43,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 63 [2024-11-10 10:31:43,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:44,101 INFO L124 PetriNetUnfolderBase]: 1592/3255 cut-off events. [2024-11-10 10:31:44,102 INFO L125 PetriNetUnfolderBase]: For 964/964 co-relation queries the response was YES. [2024-11-10 10:31:44,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6999 conditions, 3255 events. 1592/3255 cut-off events. For 964/964 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 22702 event pairs, 512 based on Foata normal form. 228/3228 useless extension candidates. Maximal degree in co-relation 6986. Up to 1024 conditions per place. [2024-11-10 10:31:44,118 INFO L140 encePairwiseOnDemand]: 55/63 looper letters, 45 selfloop transitions, 4 changer transitions 66/132 dead transitions. [2024-11-10 10:31:44,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 132 transitions, 643 flow [2024-11-10 10:31:44,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 10:31:44,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-10 10:31:44,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 328 transitions. [2024-11-10 10:31:44,122 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4733044733044733 [2024-11-10 10:31:44,122 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 180 flow. Second operand 11 states and 328 transitions. [2024-11-10 10:31:44,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 132 transitions, 643 flow [2024-11-10 10:31:44,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 132 transitions, 629 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-11-10 10:31:44,131 INFO L231 Difference]: Finished difference. Result has 81 places, 59 transitions, 224 flow [2024-11-10 10:31:44,132 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=224, PETRI_PLACES=81, PETRI_TRANSITIONS=59} [2024-11-10 10:31:44,132 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 26 predicate places. [2024-11-10 10:31:44,132 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 59 transitions, 224 flow [2024-11-10 10:31:44,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 25.0) internal successors, (400), 16 states have internal predecessors, (400), 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 10:31:44,133 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:44,133 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:31:44,155 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 10:31:44,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:31:44,334 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 10:31:44,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:44,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1728407672, now seen corresponding path program 2 times [2024-11-10 10:31:44,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:44,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381815808] [2024-11-10 10:31:44,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:44,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:44,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:45,084 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:31:45,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:45,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381815808] [2024-11-10 10:31:45,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381815808] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:31:45,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91278536] [2024-11-10 10:31:45,086 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:31:45,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:31:45,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:31:45,088 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 10:31:45,092 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 10:31:45,224 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:31:45,224 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:31:45,227 INFO L255 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-10 10:31:45,230 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:31:45,380 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:31:45,380 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:31:45,642 INFO L349 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2024-11-10 10:31:45,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 15 [2024-11-10 10:31:45,727 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-10 10:31:45,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91278536] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:31:45,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:31:45,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 6] total 19 [2024-11-10 10:31:45,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167037761] [2024-11-10 10:31:45,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:31:45,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-10 10:31:45,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:45,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-10 10:31:45,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2024-11-10 10:31:45,772 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 63 [2024-11-10 10:31:45,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 59 transitions, 224 flow. Second operand has 19 states, 19 states have (on average 22.68421052631579) internal successors, (431), 19 states have internal predecessors, (431), 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 10:31:45,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:45,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 63 [2024-11-10 10:31:45,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:47,479 INFO L124 PetriNetUnfolderBase]: 2239/4007 cut-off events. [2024-11-10 10:31:47,479 INFO L125 PetriNetUnfolderBase]: For 8063/8063 co-relation queries the response was YES. [2024-11-10 10:31:47,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10799 conditions, 4007 events. 2239/4007 cut-off events. For 8063/8063 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 25428 event pairs, 196 based on Foata normal form. 154/3878 useless extension candidates. Maximal degree in co-relation 10780. Up to 627 conditions per place. [2024-11-10 10:31:47,519 INFO L140 encePairwiseOnDemand]: 50/63 looper letters, 168 selfloop transitions, 37 changer transitions 17/237 dead transitions. [2024-11-10 10:31:47,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 237 transitions, 1397 flow [2024-11-10 10:31:47,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-10 10:31:47,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-10 10:31:47,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 701 transitions. [2024-11-10 10:31:47,523 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42796092796092794 [2024-11-10 10:31:47,523 INFO L175 Difference]: Start difference. First operand has 81 places, 59 transitions, 224 flow. Second operand 26 states and 701 transitions. [2024-11-10 10:31:47,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 237 transitions, 1397 flow [2024-11-10 10:31:47,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 237 transitions, 1184 flow, removed 104 selfloop flow, removed 9 redundant places. [2024-11-10 10:31:47,536 INFO L231 Difference]: Finished difference. Result has 103 places, 91 transitions, 466 flow [2024-11-10 10:31:47,537 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=466, PETRI_PLACES=103, PETRI_TRANSITIONS=91} [2024-11-10 10:31:47,538 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 48 predicate places. [2024-11-10 10:31:47,538 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 91 transitions, 466 flow [2024-11-10 10:31:47,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 22.68421052631579) internal successors, (431), 19 states have internal predecessors, (431), 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 10:31:47,539 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:47,539 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:31:47,556 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 10:31:47,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-10 10:31:47,740 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 10:31:47,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:47,741 INFO L85 PathProgramCache]: Analyzing trace with hash -979160818, now seen corresponding path program 3 times [2024-11-10 10:31:47,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:47,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856148700] [2024-11-10 10:31:47,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:47,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:47,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:48,479 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:31:48,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:48,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856148700] [2024-11-10 10:31:48,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856148700] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:31:48,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246664874] [2024-11-10 10:31:48,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 10:31:48,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:31:48,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:31:48,482 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 10:31:48,484 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 10:31:48,614 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-10 10:31:48,615 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:31:48,619 INFO L255 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-10 10:31:48,623 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:31:48,729 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-10 10:31:48,729 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:31:48,837 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-10 10:31:48,838 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 24 treesize of output 11 [2024-11-10 10:31:48,936 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-10 10:31:48,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246664874] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:31:48,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:31:48,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 17 [2024-11-10 10:31:48,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198090883] [2024-11-10 10:31:48,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:31:48,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-10 10:31:48,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:48,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-10 10:31:48,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2024-11-10 10:31:49,033 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 63 [2024-11-10 10:31:49,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 91 transitions, 466 flow. Second operand has 17 states, 17 states have (on average 23.11764705882353) internal successors, (393), 17 states have internal predecessors, (393), 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 10:31:49,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:49,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 63 [2024-11-10 10:31:49,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:50,234 INFO L124 PetriNetUnfolderBase]: 2449/4370 cut-off events. [2024-11-10 10:31:50,234 INFO L125 PetriNetUnfolderBase]: For 6969/6969 co-relation queries the response was YES. [2024-11-10 10:31:50,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11835 conditions, 4370 events. 2449/4370 cut-off events. For 6969/6969 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 27799 event pairs, 438 based on Foata normal form. 45/4267 useless extension candidates. Maximal degree in co-relation 11812. Up to 1640 conditions per place. [2024-11-10 10:31:50,268 INFO L140 encePairwiseOnDemand]: 54/63 looper letters, 154 selfloop transitions, 28 changer transitions 0/197 dead transitions. [2024-11-10 10:31:50,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 197 transitions, 1268 flow [2024-11-10 10:31:50,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-10 10:31:50,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-10 10:31:50,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 444 transitions. [2024-11-10 10:31:50,270 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41456582633053224 [2024-11-10 10:31:50,270 INFO L175 Difference]: Start difference. First operand has 103 places, 91 transitions, 466 flow. Second operand 17 states and 444 transitions. [2024-11-10 10:31:50,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 197 transitions, 1268 flow [2024-11-10 10:31:50,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 197 transitions, 1144 flow, removed 57 selfloop flow, removed 6 redundant places. [2024-11-10 10:31:50,287 INFO L231 Difference]: Finished difference. Result has 115 places, 98 transitions, 525 flow [2024-11-10 10:31:50,287 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=525, PETRI_PLACES=115, PETRI_TRANSITIONS=98} [2024-11-10 10:31:50,287 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 60 predicate places. [2024-11-10 10:31:50,288 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 98 transitions, 525 flow [2024-11-10 10:31:50,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 23.11764705882353) internal successors, (393), 17 states have internal predecessors, (393), 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 10:31:50,288 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:50,288 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:31:50,306 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 10:31:50,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:31:50,489 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 10:31:50,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:50,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1372455430, now seen corresponding path program 1 times [2024-11-10 10:31:50,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:50,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616341829] [2024-11-10 10:31:50,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:50,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:50,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:50,792 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 10:31:50,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:50,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616341829] [2024-11-10 10:31:50,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616341829] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:31:50,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19088650] [2024-11-10 10:31:50,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:50,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:31:50,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:31:50,798 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 10:31:50,800 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 10:31:50,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:50,938 INFO L255 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-10 10:31:50,941 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:31:51,120 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 10:31:51,121 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:31:51,424 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 10:31:51,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19088650] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:31:51,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:31:51,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-11-10 10:31:51,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292994898] [2024-11-10 10:31:51,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:31:51,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-10 10:31:51,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:51,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-10 10:31:51,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2024-11-10 10:31:51,431 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 63 [2024-11-10 10:31:51,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 98 transitions, 525 flow. Second operand has 18 states, 18 states have (on average 24.88888888888889) internal successors, (448), 18 states have internal predecessors, (448), 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 10:31:51,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:51,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 63 [2024-11-10 10:31:51,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:52,252 INFO L124 PetriNetUnfolderBase]: 2256/4732 cut-off events. [2024-11-10 10:31:52,252 INFO L125 PetriNetUnfolderBase]: For 6824/7104 co-relation queries the response was YES. [2024-11-10 10:31:52,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12499 conditions, 4732 events. 2256/4732 cut-off events. For 6824/7104 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 34363 event pairs, 1073 based on Foata normal form. 172/4650 useless extension candidates. Maximal degree in co-relation 12475. Up to 2027 conditions per place. [2024-11-10 10:31:52,293 INFO L140 encePairwiseOnDemand]: 55/63 looper letters, 74 selfloop transitions, 7 changer transitions 57/160 dead transitions. [2024-11-10 10:31:52,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 160 transitions, 1089 flow [2024-11-10 10:31:52,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 10:31:52,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 10:31:52,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 277 transitions. [2024-11-10 10:31:52,295 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4396825396825397 [2024-11-10 10:31:52,295 INFO L175 Difference]: Start difference. First operand has 115 places, 98 transitions, 525 flow. Second operand 10 states and 277 transitions. [2024-11-10 10:31:52,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 160 transitions, 1089 flow [2024-11-10 10:31:52,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 160 transitions, 1044 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-11-10 10:31:52,319 INFO L231 Difference]: Finished difference. Result has 116 places, 99 transitions, 530 flow [2024-11-10 10:31:52,319 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=530, PETRI_PLACES=116, PETRI_TRANSITIONS=99} [2024-11-10 10:31:52,320 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 61 predicate places. [2024-11-10 10:31:52,320 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 99 transitions, 530 flow [2024-11-10 10:31:52,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 24.88888888888889) internal successors, (448), 18 states have internal predecessors, (448), 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 10:31:52,321 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:52,321 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:31:52,339 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 10:31:52,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:31:52,526 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 10:31:52,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:52,526 INFO L85 PathProgramCache]: Analyzing trace with hash -572871534, now seen corresponding path program 2 times [2024-11-10 10:31:52,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:52,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192476772] [2024-11-10 10:31:52,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:52,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:52,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:54,048 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:31:54,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:54,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192476772] [2024-11-10 10:31:54,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192476772] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:31:54,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795518505] [2024-11-10 10:31:54,049 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:31:54,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:31:54,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:31:54,050 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 10:31:54,052 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 10:31:54,197 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:31:54,197 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:31:54,206 INFO L255 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-10 10:31:54,209 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:31:54,689 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:31:54,689 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 35 treesize of output 31 [2024-11-10 10:31:54,760 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:31:54,761 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:31:55,311 INFO L349 Elim1Store]: treesize reduction 4, result has 95.7 percent of original size [2024-11-10 10:31:55,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 101 [2024-11-10 10:31:55,596 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-10 10:31:55,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795518505] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 10:31:55,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 10:31:55,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [18, 11] total 35 [2024-11-10 10:31:55,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46645858] [2024-11-10 10:31:55,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:31:55,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 10:31:55,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:55,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 10:31:55,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1069, Unknown=0, NotChecked=0, Total=1190 [2024-11-10 10:31:55,645 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 63 [2024-11-10 10:31:55,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 99 transitions, 530 flow. Second operand has 8 states, 8 states have (on average 25.25) internal successors, (202), 8 states have internal predecessors, (202), 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 10:31:55,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:55,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 63 [2024-11-10 10:31:55,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:56,442 INFO L124 PetriNetUnfolderBase]: 3858/6584 cut-off events. [2024-11-10 10:31:56,442 INFO L125 PetriNetUnfolderBase]: For 10613/11028 co-relation queries the response was YES. [2024-11-10 10:31:56,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17825 conditions, 6584 events. 3858/6584 cut-off events. For 10613/11028 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 41451 event pairs, 450 based on Foata normal form. 142/6197 useless extension candidates. Maximal degree in co-relation 17796. Up to 2796 conditions per place. [2024-11-10 10:31:56,573 INFO L140 encePairwiseOnDemand]: 54/63 looper letters, 141 selfloop transitions, 13 changer transitions 2/180 dead transitions. [2024-11-10 10:31:56,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 180 transitions, 1214 flow [2024-11-10 10:31:56,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 10:31:56,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 10:31:56,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 271 transitions. [2024-11-10 10:31:56,578 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47795414462081126 [2024-11-10 10:31:56,578 INFO L175 Difference]: Start difference. First operand has 116 places, 99 transitions, 530 flow. Second operand 9 states and 271 transitions. [2024-11-10 10:31:56,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 180 transitions, 1214 flow [2024-11-10 10:31:56,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 180 transitions, 1186 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-11-10 10:31:56,605 INFO L231 Difference]: Finished difference. Result has 115 places, 102 transitions, 580 flow [2024-11-10 10:31:56,605 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=580, PETRI_PLACES=115, PETRI_TRANSITIONS=102} [2024-11-10 10:31:56,607 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 60 predicate places. [2024-11-10 10:31:56,608 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 102 transitions, 580 flow [2024-11-10 10:31:56,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 25.25) internal successors, (202), 8 states have internal predecessors, (202), 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 10:31:56,608 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:56,608 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:31:56,626 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 10:31:56,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-10 10:31:56,809 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 10:31:56,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:56,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1805823674, now seen corresponding path program 3 times [2024-11-10 10:31:56,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:56,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056254651] [2024-11-10 10:31:56,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:56,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:56,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:58,426 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:31:58,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:58,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056254651] [2024-11-10 10:31:58,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056254651] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:31:58,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430984694] [2024-11-10 10:31:58,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 10:31:58,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:31:58,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:31:58,429 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 10:31:58,431 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 10:31:58,640 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-10 10:31:58,640 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:31:58,643 INFO L255 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-10 10:31:58,647 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:31:59,356 INFO L349 Elim1Store]: treesize reduction 11, result has 77.6 percent of original size [2024-11-10 10:31:59,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 50 [2024-11-10 10:31:59,406 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:31:59,406 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:31:59,898 INFO L349 Elim1Store]: treesize reduction 20, result has 86.4 percent of original size [2024-11-10 10:31:59,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 57 treesize of output 143 [2024-11-10 10:32:00,371 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-10 10:32:00,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430984694] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:32:00,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:32:00,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 12, 8] total 35 [2024-11-10 10:32:00,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635473696] [2024-11-10 10:32:00,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:32:00,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-10 10:32:00,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:32:00,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-10 10:32:00,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1076, Unknown=0, NotChecked=0, Total=1190 [2024-11-10 10:32:00,711 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 63 [2024-11-10 10:32:00,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 102 transitions, 580 flow. Second operand has 35 states, 35 states have (on average 18.942857142857143) internal successors, (663), 35 states have internal predecessors, (663), 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 10:32:00,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:32:00,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 63 [2024-11-10 10:32:00,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:32:07,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-10 10:32:11,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-10 10:32:16,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-10 10:32:20,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-10 10:32:24,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-10 10:32:30,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-10 10:32:35,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-10 10:32:40,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-10 10:32:45,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-10 10:32:50,960 INFO L124 PetriNetUnfolderBase]: 10097/17925 cut-off events. [2024-11-10 10:32:50,960 INFO L125 PetriNetUnfolderBase]: For 39962/39972 co-relation queries the response was YES. [2024-11-10 10:32:51,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52569 conditions, 17925 events. 10097/17925 cut-off events. For 39962/39972 co-relation queries the response was YES. Maximal size of possible extension queue 663. Compared 138955 event pairs, 1542 based on Foata normal form. 142/17686 useless extension candidates. Maximal degree in co-relation 52542. Up to 6066 conditions per place. [2024-11-10 10:32:51,071 INFO L140 encePairwiseOnDemand]: 45/63 looper letters, 698 selfloop transitions, 206 changer transitions 13/930 dead transitions. [2024-11-10 10:32:51,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 930 transitions, 5952 flow [2024-11-10 10:32:51,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2024-11-10 10:32:51,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2024-11-10 10:32:51,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 2635 transitions. [2024-11-10 10:32:51,082 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3768053768053768 [2024-11-10 10:32:51,082 INFO L175 Difference]: Start difference. First operand has 115 places, 102 transitions, 580 flow. Second operand 111 states and 2635 transitions. [2024-11-10 10:32:51,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 930 transitions, 5952 flow [2024-11-10 10:32:51,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 930 transitions, 5832 flow, removed 51 selfloop flow, removed 3 redundant places. [2024-11-10 10:32:51,197 INFO L231 Difference]: Finished difference. Result has 256 places, 306 transitions, 2709 flow [2024-11-10 10:32:51,197 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=111, PETRI_FLOW=2709, PETRI_PLACES=256, PETRI_TRANSITIONS=306} [2024-11-10 10:32:51,197 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 201 predicate places. [2024-11-10 10:32:51,198 INFO L471 AbstractCegarLoop]: Abstraction has has 256 places, 306 transitions, 2709 flow [2024-11-10 10:32:51,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 18.942857142857143) internal successors, (663), 35 states have internal predecessors, (663), 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 10:32:51,198 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:32:51,198 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2024-11-10 10:32:51,212 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 10:32:51,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:32:51,401 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 10:32:51,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:32:51,402 INFO L85 PathProgramCache]: Analyzing trace with hash 2046189486, now seen corresponding path program 1 times [2024-11-10 10:32:51,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:32:51,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928115366] [2024-11-10 10:32:51,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:32:51,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:32:51,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:32:51,786 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-10 10:32:51,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:32:51,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928115366] [2024-11-10 10:32:51,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928115366] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:32:51,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790588239] [2024-11-10 10:32:51,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:32:51,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:32:51,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:32:51,789 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 10:32:51,790 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 10:32:51,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:32:51,949 INFO L255 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-10 10:32:51,952 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:32:52,184 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-10 10:32:52,185 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:32:52,557 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-10 10:32:52,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790588239] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:32:52,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:32:52,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-11-10 10:32:52,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187179958] [2024-11-10 10:32:52,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:32:52,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-10 10:32:52,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:32:52,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-10 10:32:52,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2024-11-10 10:32:52,582 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 63 [2024-11-10 10:32:52,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 306 transitions, 2709 flow. Second operand has 18 states, 18 states have (on average 25.333333333333332) internal successors, (456), 18 states have internal predecessors, (456), 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 10:32:52,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:32:52,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 63 [2024-11-10 10:32:52,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:32:55,206 INFO L124 PetriNetUnfolderBase]: 6925/14951 cut-off events. [2024-11-10 10:32:55,206 INFO L125 PetriNetUnfolderBase]: For 79317/80353 co-relation queries the response was YES. [2024-11-10 10:32:55,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50384 conditions, 14951 events. 6925/14951 cut-off events. For 79317/80353 co-relation queries the response was YES. Maximal size of possible extension queue 697. Compared 138228 event pairs, 3148 based on Foata normal form. 411/14620 useless extension candidates. Maximal degree in co-relation 50323. Up to 6601 conditions per place. [2024-11-10 10:32:55,353 INFO L140 encePairwiseOnDemand]: 56/63 looper letters, 242 selfloop transitions, 13 changer transitions 55/421 dead transitions. [2024-11-10 10:32:55,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 421 transitions, 4178 flow [2024-11-10 10:32:55,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 10:32:55,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 10:32:55,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 258 transitions. [2024-11-10 10:32:55,355 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.455026455026455 [2024-11-10 10:32:55,355 INFO L175 Difference]: Start difference. First operand has 256 places, 306 transitions, 2709 flow. Second operand 9 states and 258 transitions. [2024-11-10 10:32:55,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 421 transitions, 4178 flow [2024-11-10 10:32:55,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 421 transitions, 3400 flow, removed 339 selfloop flow, removed 16 redundant places. [2024-11-10 10:32:55,848 INFO L231 Difference]: Finished difference. Result has 250 places, 311 transitions, 2100 flow [2024-11-10 10:32:55,848 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=2028, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2100, PETRI_PLACES=250, PETRI_TRANSITIONS=311} [2024-11-10 10:32:55,848 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 195 predicate places. [2024-11-10 10:32:55,848 INFO L471 AbstractCegarLoop]: Abstraction has has 250 places, 311 transitions, 2100 flow [2024-11-10 10:32:55,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 25.333333333333332) internal successors, (456), 18 states have internal predecessors, (456), 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 10:32:55,849 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:32:55,849 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2024-11-10 10:32:55,866 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 10:32:56,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:32:56,050 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 10:32:56,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:32:56,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1862595724, now seen corresponding path program 4 times [2024-11-10 10:32:56,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:32:56,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964808312] [2024-11-10 10:32:56,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:32:56,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:32:56,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:32:56,316 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-10 10:32:56,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:32:56,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964808312] [2024-11-10 10:32:56,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964808312] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:32:56,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:32:56,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:32:56,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812977850] [2024-11-10 10:32:56,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:32:56,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:32:56,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:32:56,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:32:56,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 10:32:56,323 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 63 [2024-11-10 10:32:56,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 311 transitions, 2100 flow. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 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 10:32:56,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:32:56,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 63 [2024-11-10 10:32:56,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand