./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-lamport.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-lamport.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 a4f33aa2cc1f38311ba2397f8e50d98656063732fb966533fd95353a255f95b1 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 07:09:01,936 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 07:09:02,016 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-13 07:09:02,020 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 07:09:02,021 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 07:09:02,050 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 07:09:02,051 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 07:09:02,052 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 07:09:02,052 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 07:09:02,056 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 07:09:02,056 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 07:09:02,056 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 07:09:02,057 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 07:09:02,057 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 07:09:02,057 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 07:09:02,058 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 07:09:02,058 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 07:09:02,058 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 07:09:02,058 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 07:09:02,058 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 07:09:02,059 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 07:09:02,060 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 07:09:02,061 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 07:09:02,061 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 07:09:02,061 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 07:09:02,061 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 07:09:02,062 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 07:09:02,062 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 07:09:02,062 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 07:09:02,062 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 07:09:02,063 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 07:09:02,063 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 07:09:02,063 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 07:09:02,063 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 07:09:02,064 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 07:09:02,064 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 07:09:02,064 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 07:09:02,064 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 07:09:02,065 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 07:09:02,065 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 07:09:02,065 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 07:09:02,066 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 07:09:02,066 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a4f33aa2cc1f38311ba2397f8e50d98656063732fb966533fd95353a255f95b1 [2024-10-13 07:09:02,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 07:09:02,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 07:09:02,370 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 07:09:02,372 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 07:09:02,373 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 07:09:02,374 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-lamport.wvr.c [2024-10-13 07:09:03,846 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 07:09:04,072 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 07:09:04,073 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-lamport.wvr.c [2024-10-13 07:09:04,086 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b93e76c8/ae85d28f503d4633bfba704bf0de282d/FLAG5bc95bfc2 [2024-10-13 07:09:04,104 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b93e76c8/ae85d28f503d4633bfba704bf0de282d [2024-10-13 07:09:04,107 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 07:09:04,108 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 07:09:04,112 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 07:09:04,113 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 07:09:04,118 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 07:09:04,118 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:09:04" (1/1) ... [2024-10-13 07:09:04,119 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26b86e98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:04, skipping insertion in model container [2024-10-13 07:09:04,120 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:09:04" (1/1) ... [2024-10-13 07:09:04,148 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 07:09:04,356 WARN L248 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/parallel-lamport.wvr.c[4249,4262] [2024-10-13 07:09:04,375 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 07:09:04,388 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 07:09:04,419 WARN L248 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/parallel-lamport.wvr.c[4249,4262] [2024-10-13 07:09:04,422 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 07:09:04,441 INFO L204 MainTranslator]: Completed translation [2024-10-13 07:09:04,442 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:04 WrapperNode [2024-10-13 07:09:04,442 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 07:09:04,443 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 07:09:04,444 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 07:09:04,444 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 07:09:04,451 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:04" (1/1) ... [2024-10-13 07:09:04,460 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:04" (1/1) ... [2024-10-13 07:09:04,490 INFO L138 Inliner]: procedures = 24, calls = 74, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 228 [2024-10-13 07:09:04,490 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 07:09:04,491 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 07:09:04,491 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 07:09:04,492 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 07:09:04,503 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:04" (1/1) ... [2024-10-13 07:09:04,503 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:04" (1/1) ... [2024-10-13 07:09:04,507 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:04" (1/1) ... [2024-10-13 07:09:04,524 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-13 07:09:04,528 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:04" (1/1) ... [2024-10-13 07:09:04,529 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:04" (1/1) ... [2024-10-13 07:09:04,540 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:04" (1/1) ... [2024-10-13 07:09:04,547 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:04" (1/1) ... [2024-10-13 07:09:04,549 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:04" (1/1) ... [2024-10-13 07:09:04,551 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:04" (1/1) ... [2024-10-13 07:09:04,554 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 07:09:04,555 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 07:09:04,555 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 07:09:04,555 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 07:09:04,556 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:04" (1/1) ... [2024-10-13 07:09:04,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 07:09:04,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:09:04,590 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) [2024-10-13 07:09:04,592 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 [2024-10-13 07:09:04,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 07:09:04,634 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 07:09:04,635 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 07:09:04,635 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 07:09:04,635 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 07:09:04,635 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-13 07:09:04,635 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-13 07:09:04,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 07:09:04,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 07:09:04,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 07:09:04,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 07:09:04,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-13 07:09:04,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-13 07:09:04,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-13 07:09:04,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 07:09:04,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 07:09:04,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 07:09:04,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 07:09:04,640 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 07:09:04,745 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 07:09:04,747 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 07:09:05,048 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 07:09:05,048 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 07:09:05,380 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 07:09:05,380 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-13 07:09:05,381 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:09:05 BoogieIcfgContainer [2024-10-13 07:09:05,381 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 07:09:05,384 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 07:09:05,384 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 07:09:05,387 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 07:09:05,388 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:09:04" (1/3) ... [2024-10-13 07:09:05,389 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@740c16f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:09:05, skipping insertion in model container [2024-10-13 07:09:05,389 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:04" (2/3) ... [2024-10-13 07:09:05,390 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@740c16f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:09:05, skipping insertion in model container [2024-10-13 07:09:05,390 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:09:05" (3/3) ... [2024-10-13 07:09:05,394 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-lamport.wvr.c [2024-10-13 07:09:05,409 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 07:09:05,409 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-13 07:09:05,409 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 07:09:05,456 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-13 07:09:05,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 47 transitions, 115 flow [2024-10-13 07:09:05,534 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-10-13 07:09:05,534 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-13 07:09:05,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 44 events. 1/44 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 60 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2024-10-13 07:09:05,537 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 47 transitions, 115 flow [2024-10-13 07:09:05,541 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 43 transitions, 104 flow [2024-10-13 07:09:05,551 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 07:09:05,559 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;@583a694d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 07:09:05,559 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-13 07:09:05,581 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 07:09:05,581 INFO L124 PetriNetUnfolderBase]: 1/42 cut-off events. [2024-10-13 07:09:05,581 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-13 07:09:05,581 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:05,582 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] [2024-10-13 07:09:05,583 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)] === [2024-10-13 07:09:05,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:05,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1033759554, now seen corresponding path program 1 times [2024-10-13 07:09:05,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:05,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220480390] [2024-10-13 07:09:05,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:05,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:05,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:06,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:06,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:06,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220480390] [2024-10-13 07:09:06,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220480390] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:09:06,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:09:06,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 07:09:06,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510152831] [2024-10-13 07:09:06,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:09:06,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 07:09:06,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:06,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 07:09:06,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 07:09:06,192 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2024-10-13 07:09:06,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:06,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:06,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2024-10-13 07:09:06,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:06,510 INFO L124 PetriNetUnfolderBase]: 893/1581 cut-off events. [2024-10-13 07:09:06,511 INFO L125 PetriNetUnfolderBase]: For 92/92 co-relation queries the response was YES. [2024-10-13 07:09:06,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3085 conditions, 1581 events. 893/1581 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 9098 event pairs, 892 based on Foata normal form. 0/1538 useless extension candidates. Maximal degree in co-relation 2851. Up to 1377 conditions per place. [2024-10-13 07:09:06,534 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 26 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2024-10-13 07:09:06,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 44 transitions, 162 flow [2024-10-13 07:09:06,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 07:09:06,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 07:09:06,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2024-10-13 07:09:06,549 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6099290780141844 [2024-10-13 07:09:06,552 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 104 flow. Second operand 3 states and 86 transitions. [2024-10-13 07:09:06,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 44 transitions, 162 flow [2024-10-13 07:09:06,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 44 transitions, 150 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-13 07:09:06,560 INFO L231 Difference]: Finished difference. Result has 49 places, 44 transitions, 104 flow [2024-10-13 07:09:06,563 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=49, PETRI_TRANSITIONS=44} [2024-10-13 07:09:06,566 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -3 predicate places. [2024-10-13 07:09:06,568 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 44 transitions, 104 flow [2024-10-13 07:09:06,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:06,569 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:06,569 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, 1] [2024-10-13 07:09:06,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 07:09:06,570 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)] === [2024-10-13 07:09:06,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:06,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1217611630, now seen corresponding path program 1 times [2024-10-13 07:09:06,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:06,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592035471] [2024-10-13 07:09:06,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:06,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:06,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:06,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:09:06,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:06,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592035471] [2024-10-13 07:09:06,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592035471] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:09:06,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:09:06,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-13 07:09:06,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450954800] [2024-10-13 07:09:06,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:09:06,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 07:09:06,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:06,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 07:09:06,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-13 07:09:06,875 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-10-13 07:09:06,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 44 transitions, 104 flow. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 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) [2024-10-13 07:09:06,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:06,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-10-13 07:09:06,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:07,655 INFO L124 PetriNetUnfolderBase]: 3808/6261 cut-off events. [2024-10-13 07:09:07,655 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2024-10-13 07:09:07,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12179 conditions, 6261 events. 3808/6261 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 39268 event pairs, 705 based on Foata normal form. 60/6305 useless extension candidates. Maximal degree in co-relation 12168. Up to 1665 conditions per place. [2024-10-13 07:09:07,750 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 127 selfloop transitions, 16 changer transitions 0/153 dead transitions. [2024-10-13 07:09:07,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 153 transitions, 622 flow [2024-10-13 07:09:07,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 07:09:07,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 07:09:07,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 260 transitions. [2024-10-13 07:09:07,754 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6146572104018913 [2024-10-13 07:09:07,754 INFO L175 Difference]: Start difference. First operand has 49 places, 44 transitions, 104 flow. Second operand 9 states and 260 transitions. [2024-10-13 07:09:07,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 153 transitions, 622 flow [2024-10-13 07:09:07,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 153 transitions, 618 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-13 07:09:07,757 INFO L231 Difference]: Finished difference. Result has 61 places, 58 transitions, 196 flow [2024-10-13 07:09:07,758 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=196, PETRI_PLACES=61, PETRI_TRANSITIONS=58} [2024-10-13 07:09:07,759 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 9 predicate places. [2024-10-13 07:09:07,759 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 196 flow [2024-10-13 07:09:07,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 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) [2024-10-13 07:09:07,759 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:07,759 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, 1] [2024-10-13 07:09:07,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 07:09:07,760 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)] === [2024-10-13 07:09:07,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:07,760 INFO L85 PathProgramCache]: Analyzing trace with hash -151464718, now seen corresponding path program 2 times [2024-10-13 07:09:07,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:07,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030823302] [2024-10-13 07:09:07,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:07,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:07,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:08,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:08,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:08,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030823302] [2024-10-13 07:09:08,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030823302] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:09:08,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836323629] [2024-10-13 07:09:08,501 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 07:09:08,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:08,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:09:08,504 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) [2024-10-13 07:09:08,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 07:09:08,624 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 07:09:08,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:09:08,629 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-13 07:09:08,637 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:09:09,018 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 07:09:09,019 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-10-13 07:09:09,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:09:09,033 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 07:09:09,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836323629] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:09:09,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 07:09:09,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2024-10-13 07:09:09,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860926006] [2024-10-13 07:09:09,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:09:09,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 07:09:09,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:09,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 07:09:09,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2024-10-13 07:09:09,044 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-13 07:09:09,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 196 flow. Second operand has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 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) [2024-10-13 07:09:09,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:09,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-13 07:09:09,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:09,975 INFO L124 PetriNetUnfolderBase]: 4271/7048 cut-off events. [2024-10-13 07:09:09,976 INFO L125 PetriNetUnfolderBase]: For 735/735 co-relation queries the response was YES. [2024-10-13 07:09:09,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14583 conditions, 7048 events. 4271/7048 cut-off events. For 735/735 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 46664 event pairs, 767 based on Foata normal form. 2/6893 useless extension candidates. Maximal degree in co-relation 14562. Up to 3666 conditions per place. [2024-10-13 07:09:10,031 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 82 selfloop transitions, 16 changer transitions 16/142 dead transitions. [2024-10-13 07:09:10,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 142 transitions, 608 flow [2024-10-13 07:09:10,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 07:09:10,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 07:09:10,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 284 transitions. [2024-10-13 07:09:10,034 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6042553191489362 [2024-10-13 07:09:10,034 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 196 flow. Second operand 10 states and 284 transitions. [2024-10-13 07:09:10,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 142 transitions, 608 flow [2024-10-13 07:09:10,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 142 transitions, 608 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 07:09:10,051 INFO L231 Difference]: Finished difference. Result has 74 places, 73 transitions, 283 flow [2024-10-13 07:09:10,052 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=283, PETRI_PLACES=74, PETRI_TRANSITIONS=73} [2024-10-13 07:09:10,052 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 22 predicate places. [2024-10-13 07:09:10,053 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 73 transitions, 283 flow [2024-10-13 07:09:10,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 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) [2024-10-13 07:09:10,053 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:10,053 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, 1] [2024-10-13 07:09:10,072 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 07:09:10,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:10,255 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)] === [2024-10-13 07:09:10,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:10,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1872739512, now seen corresponding path program 3 times [2024-10-13 07:09:10,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:10,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400463958] [2024-10-13 07:09:10,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:10,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:10,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:10,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:10,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:10,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400463958] [2024-10-13 07:09:10,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400463958] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:09:10,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9789400] [2024-10-13 07:09:10,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 07:09:10,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:10,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:09:10,743 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) [2024-10-13 07:09:10,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 07:09:10,836 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-10-13 07:09:10,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:09:10,839 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-13 07:09:10,841 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:09:11,072 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 07:09:11,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-10-13 07:09:11,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:09:11,089 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 07:09:11,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9789400] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:09:11,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 07:09:11,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2024-10-13 07:09:11,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025639891] [2024-10-13 07:09:11,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:09:11,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 07:09:11,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:11,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 07:09:11,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2024-10-13 07:09:11,103 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-13 07:09:11,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 73 transitions, 283 flow. Second operand has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 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) [2024-10-13 07:09:11,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:11,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-13 07:09:11,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:12,707 INFO L124 PetriNetUnfolderBase]: 7013/11619 cut-off events. [2024-10-13 07:09:12,708 INFO L125 PetriNetUnfolderBase]: For 3192/3192 co-relation queries the response was YES. [2024-10-13 07:09:12,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27125 conditions, 11619 events. 7013/11619 cut-off events. For 3192/3192 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 84633 event pairs, 1950 based on Foata normal form. 2/11408 useless extension candidates. Maximal degree in co-relation 27098. Up to 5193 conditions per place. [2024-10-13 07:09:12,807 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 132 selfloop transitions, 25 changer transitions 7/192 dead transitions. [2024-10-13 07:09:12,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 192 transitions, 965 flow [2024-10-13 07:09:12,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 07:09:12,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-13 07:09:12,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 327 transitions. [2024-10-13 07:09:12,810 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.632495164410058 [2024-10-13 07:09:12,810 INFO L175 Difference]: Start difference. First operand has 74 places, 73 transitions, 283 flow. Second operand 11 states and 327 transitions. [2024-10-13 07:09:12,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 192 transitions, 965 flow [2024-10-13 07:09:12,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 192 transitions, 959 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-10-13 07:09:12,837 INFO L231 Difference]: Finished difference. Result has 89 places, 94 transitions, 503 flow [2024-10-13 07:09:12,838 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=503, PETRI_PLACES=89, PETRI_TRANSITIONS=94} [2024-10-13 07:09:12,838 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 37 predicate places. [2024-10-13 07:09:12,839 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 94 transitions, 503 flow [2024-10-13 07:09:12,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 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) [2024-10-13 07:09:12,839 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:12,839 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, 1] [2024-10-13 07:09:12,857 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 07:09:13,043 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,SelfDestructingSolverStorable3 [2024-10-13 07:09:13,044 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)] === [2024-10-13 07:09:13,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:13,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1977101006, now seen corresponding path program 4 times [2024-10-13 07:09:13,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:13,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044136835] [2024-10-13 07:09:13,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:13,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:13,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:13,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:13,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:13,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044136835] [2024-10-13 07:09:13,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044136835] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:09:13,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453575328] [2024-10-13 07:09:13,591 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 07:09:13,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:13,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:09:13,594 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) [2024-10-13 07:09:13,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 07:09:13,757 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 07:09:13,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:09:13,762 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-13 07:09:13,765 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:09:13,971 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 07:09:13,971 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-10-13 07:09:13,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:09:13,984 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 07:09:13,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453575328] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:09:13,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 07:09:13,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2024-10-13 07:09:13,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136443328] [2024-10-13 07:09:13,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:09:13,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 07:09:13,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:13,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 07:09:13,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2024-10-13 07:09:14,001 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-13 07:09:14,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 94 transitions, 503 flow. Second operand has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 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) [2024-10-13 07:09:14,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:14,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-13 07:09:14,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:15,601 INFO L124 PetriNetUnfolderBase]: 7832/13192 cut-off events. [2024-10-13 07:09:15,602 INFO L125 PetriNetUnfolderBase]: For 11745/11745 co-relation queries the response was YES. [2024-10-13 07:09:15,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35044 conditions, 13192 events. 7832/13192 cut-off events. For 11745/11745 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 99559 event pairs, 1925 based on Foata normal form. 2/12933 useless extension candidates. Maximal degree in co-relation 35008. Up to 8983 conditions per place. [2024-10-13 07:09:15,718 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 99 selfloop transitions, 24 changer transitions 18/169 dead transitions. [2024-10-13 07:09:15,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 169 transitions, 1041 flow [2024-10-13 07:09:15,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 07:09:15,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 07:09:15,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 282 transitions. [2024-10-13 07:09:15,720 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-10-13 07:09:15,721 INFO L175 Difference]: Start difference. First operand has 89 places, 94 transitions, 503 flow. Second operand 10 states and 282 transitions. [2024-10-13 07:09:15,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 169 transitions, 1041 flow [2024-10-13 07:09:15,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 169 transitions, 1025 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-10-13 07:09:15,967 INFO L231 Difference]: Finished difference. Result has 100 places, 102 transitions, 626 flow [2024-10-13 07:09:15,967 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=626, PETRI_PLACES=100, PETRI_TRANSITIONS=102} [2024-10-13 07:09:15,967 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 48 predicate places. [2024-10-13 07:09:15,968 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 102 transitions, 626 flow [2024-10-13 07:09:15,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 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) [2024-10-13 07:09:15,968 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:15,968 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, 1] [2024-10-13 07:09:15,991 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 07:09:16,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:16,169 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)] === [2024-10-13 07:09:16,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:16,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1027043792, now seen corresponding path program 5 times [2024-10-13 07:09:16,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:16,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341243129] [2024-10-13 07:09:16,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:16,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:16,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:16,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:16,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:16,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341243129] [2024-10-13 07:09:16,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341243129] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:09:16,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694216512] [2024-10-13 07:09:16,705 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 07:09:16,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:16,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:09:16,707 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) [2024-10-13 07:09:16,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 07:09:16,805 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 07:09:16,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:09:16,811 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-13 07:09:16,813 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:09:17,119 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-10-13 07:09:17,120 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 20 [2024-10-13 07:09:17,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:17,223 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:09:17,542 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 07:09:17,543 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 38 [2024-10-13 07:09:17,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:17,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694216512] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:09:17,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:09:17,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 7] total 22 [2024-10-13 07:09:17,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047931838] [2024-10-13 07:09:17,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:09:17,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-13 07:09:17,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:17,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-13 07:09:17,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2024-10-13 07:09:17,815 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-10-13 07:09:17,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 102 transitions, 626 flow. Second operand has 23 states, 23 states have (on average 21.434782608695652) internal successors, (493), 23 states have internal predecessors, (493), 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) [2024-10-13 07:09:17,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:17,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-10-13 07:09:17,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:21,058 INFO L124 PetriNetUnfolderBase]: 16947/28740 cut-off events. [2024-10-13 07:09:21,059 INFO L125 PetriNetUnfolderBase]: For 32708/32768 co-relation queries the response was YES. [2024-10-13 07:09:21,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77881 conditions, 28740 events. 16947/28740 cut-off events. For 32708/32768 co-relation queries the response was YES. Maximal size of possible extension queue 1473. Compared 247718 event pairs, 5807 based on Foata normal form. 74/28132 useless extension candidates. Maximal degree in co-relation 77785. Up to 10762 conditions per place. [2024-10-13 07:09:21,414 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 73 selfloop transitions, 9 changer transitions 235/348 dead transitions. [2024-10-13 07:09:21,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 348 transitions, 2598 flow [2024-10-13 07:09:21,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-13 07:09:21,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-13 07:09:21,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 482 transitions. [2024-10-13 07:09:21,417 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6409574468085106 [2024-10-13 07:09:21,417 INFO L175 Difference]: Start difference. First operand has 100 places, 102 transitions, 626 flow. Second operand 16 states and 482 transitions. [2024-10-13 07:09:21,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 348 transitions, 2598 flow [2024-10-13 07:09:21,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 348 transitions, 2414 flow, removed 71 selfloop flow, removed 3 redundant places. [2024-10-13 07:09:21,988 INFO L231 Difference]: Finished difference. Result has 122 places, 103 transitions, 754 flow [2024-10-13 07:09:21,988 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=754, PETRI_PLACES=122, PETRI_TRANSITIONS=103} [2024-10-13 07:09:21,989 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 70 predicate places. [2024-10-13 07:09:21,989 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 103 transitions, 754 flow [2024-10-13 07:09:21,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 21.434782608695652) internal successors, (493), 23 states have internal predecessors, (493), 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) [2024-10-13 07:09:21,989 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:21,990 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] [2024-10-13 07:09:22,002 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-13 07:09:22,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:22,190 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)] === [2024-10-13 07:09:22,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:22,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1088648126, now seen corresponding path program 6 times [2024-10-13 07:09:22,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:22,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426131988] [2024-10-13 07:09:22,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:22,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:22,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:24,429 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:24,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:24,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426131988] [2024-10-13 07:09:24,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426131988] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:09:24,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424522309] [2024-10-13 07:09:24,431 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 07:09:24,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:24,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:09:24,433 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) [2024-10-13 07:09:24,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 07:09:24,537 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-10-13 07:09:24,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:09:24,539 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-13 07:09:24,541 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:09:24,783 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 07:09:24,784 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-10-13 07:09:24,792 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 07:09:24,792 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 07:09:24,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424522309] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:09:24,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 07:09:24,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 19 [2024-10-13 07:09:24,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328178140] [2024-10-13 07:09:24,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:09:24,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 07:09:24,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:24,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 07:09:24,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2024-10-13 07:09:24,804 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-13 07:09:24,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 103 transitions, 754 flow. Second operand has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 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) [2024-10-13 07:09:24,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:24,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-13 07:09:24,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:26,780 INFO L124 PetriNetUnfolderBase]: 8742/14751 cut-off events. [2024-10-13 07:09:26,781 INFO L125 PetriNetUnfolderBase]: For 66440/66440 co-relation queries the response was YES. [2024-10-13 07:09:26,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59776 conditions, 14751 events. 8742/14751 cut-off events. For 66440/66440 co-relation queries the response was YES. Maximal size of possible extension queue 748. Compared 114327 event pairs, 2439 based on Foata normal form. 2/14478 useless extension candidates. Maximal degree in co-relation 59721. Up to 8940 conditions per place. [2024-10-13 07:09:26,876 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 130 selfloop transitions, 35 changer transitions 7/200 dead transitions. [2024-10-13 07:09:26,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 200 transitions, 1714 flow [2024-10-13 07:09:26,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 07:09:26,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-13 07:09:26,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 317 transitions. [2024-10-13 07:09:26,878 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6131528046421664 [2024-10-13 07:09:26,878 INFO L175 Difference]: Start difference. First operand has 122 places, 103 transitions, 754 flow. Second operand 11 states and 317 transitions. [2024-10-13 07:09:26,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 200 transitions, 1714 flow [2024-10-13 07:09:27,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 200 transitions, 1582 flow, removed 62 selfloop flow, removed 5 redundant places. [2024-10-13 07:09:27,157 INFO L231 Difference]: Finished difference. Result has 122 places, 120 transitions, 1017 flow [2024-10-13 07:09:27,157 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=694, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1017, PETRI_PLACES=122, PETRI_TRANSITIONS=120} [2024-10-13 07:09:27,158 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 70 predicate places. [2024-10-13 07:09:27,158 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 120 transitions, 1017 flow [2024-10-13 07:09:27,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 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) [2024-10-13 07:09:27,158 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:27,158 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] [2024-10-13 07:09:27,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-13 07:09:27,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:27,359 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)] === [2024-10-13 07:09:27,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:27,360 INFO L85 PathProgramCache]: Analyzing trace with hash -2117586246, now seen corresponding path program 7 times [2024-10-13 07:09:27,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:27,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968008473] [2024-10-13 07:09:27,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:27,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:27,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:30,174 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:30,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:30,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968008473] [2024-10-13 07:09:30,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968008473] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:09:30,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083870598] [2024-10-13 07:09:30,175 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-13 07:09:30,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:30,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:09:30,177 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) [2024-10-13 07:09:30,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 07:09:30,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:30,268 INFO L255 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-13 07:09:30,274 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:09:30,518 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 07:09:30,519 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-10-13 07:09:30,528 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:09:30,528 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:09:30,760 INFO L349 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2024-10-13 07:09:30,760 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 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 74 [2024-10-13 07:09:30,815 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 07:09:30,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083870598] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-13 07:09:30,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-13 07:09:30,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13, 9] total 25 [2024-10-13 07:09:30,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812520287] [2024-10-13 07:09:30,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:09:30,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 07:09:30,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:30,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 07:09:30,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2024-10-13 07:09:30,829 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-13 07:09:30,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 120 transitions, 1017 flow. Second operand has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 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) [2024-10-13 07:09:30,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:30,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-13 07:09:30,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:33,656 INFO L124 PetriNetUnfolderBase]: 11460/19508 cut-off events. [2024-10-13 07:09:33,656 INFO L125 PetriNetUnfolderBase]: For 76454/76454 co-relation queries the response was YES. [2024-10-13 07:09:33,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75620 conditions, 19508 events. 11460/19508 cut-off events. For 76454/76454 co-relation queries the response was YES. Maximal size of possible extension queue 1049. Compared 159189 event pairs, 3189 based on Foata normal form. 2/19196 useless extension candidates. Maximal degree in co-relation 75564. Up to 9374 conditions per place. [2024-10-13 07:09:33,805 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 197 selfloop transitions, 63 changer transitions 5/293 dead transitions. [2024-10-13 07:09:33,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 293 transitions, 2701 flow [2024-10-13 07:09:33,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-13 07:09:33,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-13 07:09:33,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 498 transitions. [2024-10-13 07:09:33,808 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.623279098873592 [2024-10-13 07:09:33,808 INFO L175 Difference]: Start difference. First operand has 122 places, 120 transitions, 1017 flow. Second operand 17 states and 498 transitions. [2024-10-13 07:09:33,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 293 transitions, 2701 flow [2024-10-13 07:09:34,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 293 transitions, 2490 flow, removed 101 selfloop flow, removed 1 redundant places. [2024-10-13 07:09:34,294 INFO L231 Difference]: Finished difference. Result has 142 places, 151 transitions, 1480 flow [2024-10-13 07:09:34,294 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=903, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1480, PETRI_PLACES=142, PETRI_TRANSITIONS=151} [2024-10-13 07:09:34,295 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 90 predicate places. [2024-10-13 07:09:34,295 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 151 transitions, 1480 flow [2024-10-13 07:09:34,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 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) [2024-10-13 07:09:34,296 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:34,296 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] [2024-10-13 07:09:34,312 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-13 07:09:34,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:34,497 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)] === [2024-10-13 07:09:34,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:34,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1096708916, now seen corresponding path program 8 times [2024-10-13 07:09:34,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:34,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112202149] [2024-10-13 07:09:34,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:34,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:34,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:36,402 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:36,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:36,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112202149] [2024-10-13 07:09:36,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112202149] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:09:36,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213573732] [2024-10-13 07:09:36,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 07:09:36,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:36,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:09:36,405 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) [2024-10-13 07:09:36,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-13 07:09:36,503 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 07:09:36,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:09:36,505 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-13 07:09:36,506 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:09:36,693 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 07:09:36,693 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-10-13 07:09:36,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 07:09:36,701 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 07:09:36,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213573732] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:09:36,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 07:09:36,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 19 [2024-10-13 07:09:36,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437148559] [2024-10-13 07:09:36,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:09:36,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 07:09:36,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:36,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 07:09:36,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2024-10-13 07:09:36,724 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-13 07:09:36,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 151 transitions, 1480 flow. Second operand has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 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) [2024-10-13 07:09:36,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:36,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-13 07:09:36,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:38,890 INFO L124 PetriNetUnfolderBase]: 11426/19428 cut-off events. [2024-10-13 07:09:38,890 INFO L125 PetriNetUnfolderBase]: For 78537/78537 co-relation queries the response was YES. [2024-10-13 07:09:39,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76653 conditions, 19428 events. 11426/19428 cut-off events. For 78537/78537 co-relation queries the response was YES. Maximal size of possible extension queue 1058. Compared 158795 event pairs, 3954 based on Foata normal form. 2/19077 useless extension candidates. Maximal degree in co-relation 76591. Up to 13668 conditions per place. [2024-10-13 07:09:39,164 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 121 selfloop transitions, 38 changer transitions 34/221 dead transitions. [2024-10-13 07:09:39,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 221 transitions, 2179 flow [2024-10-13 07:09:39,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 07:09:39,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 07:09:39,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 290 transitions. [2024-10-13 07:09:39,166 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6170212765957447 [2024-10-13 07:09:39,166 INFO L175 Difference]: Start difference. First operand has 142 places, 151 transitions, 1480 flow. Second operand 10 states and 290 transitions. [2024-10-13 07:09:39,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 221 transitions, 2179 flow [2024-10-13 07:09:39,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 221 transitions, 2048 flow, removed 47 selfloop flow, removed 3 redundant places. [2024-10-13 07:09:39,751 INFO L231 Difference]: Finished difference. Result has 149 places, 142 transitions, 1343 flow [2024-10-13 07:09:39,752 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1350, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1343, PETRI_PLACES=149, PETRI_TRANSITIONS=142} [2024-10-13 07:09:39,753 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 97 predicate places. [2024-10-13 07:09:39,754 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 142 transitions, 1343 flow [2024-10-13 07:09:39,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 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) [2024-10-13 07:09:39,754 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:39,754 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] [2024-10-13 07:09:39,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-13 07:09:39,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:39,959 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)] === [2024-10-13 07:09:39,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:39,959 INFO L85 PathProgramCache]: Analyzing trace with hash -782318092, now seen corresponding path program 9 times [2024-10-13 07:09:39,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:39,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873944162] [2024-10-13 07:09:39,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:39,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:39,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:40,083 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 07:09:40,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:40,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873944162] [2024-10-13 07:09:40,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873944162] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:09:40,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:09:40,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-13 07:09:40,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341305779] [2024-10-13 07:09:40,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:09:40,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 07:09:40,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:40,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 07:09:40,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-13 07:09:40,096 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-10-13 07:09:40,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 142 transitions, 1343 flow. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 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) [2024-10-13 07:09:40,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:40,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-10-13 07:09:40,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:44,204 INFO L124 PetriNetUnfolderBase]: 23191/37129 cut-off events. [2024-10-13 07:09:44,204 INFO L125 PetriNetUnfolderBase]: For 158091/158497 co-relation queries the response was YES. [2024-10-13 07:09:44,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145590 conditions, 37129 events. 23191/37129 cut-off events. For 158091/158497 co-relation queries the response was YES. Maximal size of possible extension queue 1365. Compared 290181 event pairs, 9178 based on Foata normal form. 126/36959 useless extension candidates. Maximal degree in co-relation 145528. Up to 22863 conditions per place. [2024-10-13 07:09:44,688 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 410 selfloop transitions, 19 changer transitions 28/474 dead transitions. [2024-10-13 07:09:44,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 474 transitions, 5559 flow [2024-10-13 07:09:44,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 07:09:44,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-13 07:09:44,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 302 transitions. [2024-10-13 07:09:44,691 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5841392649903289 [2024-10-13 07:09:44,691 INFO L175 Difference]: Start difference. First operand has 149 places, 142 transitions, 1343 flow. Second operand 11 states and 302 transitions. [2024-10-13 07:09:44,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 474 transitions, 5559 flow [2024-10-13 07:09:45,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 474 transitions, 5342 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-10-13 07:09:45,839 INFO L231 Difference]: Finished difference. Result has 150 places, 156 transitions, 1431 flow [2024-10-13 07:09:45,840 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1277, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1431, PETRI_PLACES=150, PETRI_TRANSITIONS=156} [2024-10-13 07:09:45,840 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 98 predicate places. [2024-10-13 07:09:45,840 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 156 transitions, 1431 flow [2024-10-13 07:09:45,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 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) [2024-10-13 07:09:45,841 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:45,841 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] [2024-10-13 07:09:45,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-13 07:09:45,841 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)] === [2024-10-13 07:09:45,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:45,842 INFO L85 PathProgramCache]: Analyzing trace with hash 772484988, now seen corresponding path program 10 times [2024-10-13 07:09:45,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:45,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843827674] [2024-10-13 07:09:45,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:45,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:45,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:45,916 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 07:09:45,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:45,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843827674] [2024-10-13 07:09:45,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843827674] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:09:45,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:09:45,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 07:09:45,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840129101] [2024-10-13 07:09:45,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:09:45,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 07:09:45,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:45,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 07:09:45,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 07:09:45,921 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-13 07:09:45,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 156 transitions, 1431 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2024-10-13 07:09:45,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:45,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-13 07:09:45,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:49,025 INFO L124 PetriNetUnfolderBase]: 15057/26260 cut-off events. [2024-10-13 07:09:49,025 INFO L125 PetriNetUnfolderBase]: For 108261/108658 co-relation queries the response was YES. [2024-10-13 07:09:49,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102936 conditions, 26260 events. 15057/26260 cut-off events. For 108261/108658 co-relation queries the response was YES. Maximal size of possible extension queue 1355. Compared 226483 event pairs, 12798 based on Foata normal form. 152/25739 useless extension candidates. Maximal degree in co-relation 102870. Up to 22705 conditions per place. [2024-10-13 07:09:49,275 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 120 selfloop transitions, 2 changer transitions 5/177 dead transitions. [2024-10-13 07:09:49,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 177 transitions, 1872 flow [2024-10-13 07:09:49,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 07:09:49,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 07:09:49,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-10-13 07:09:49,276 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6595744680851063 [2024-10-13 07:09:49,276 INFO L175 Difference]: Start difference. First operand has 150 places, 156 transitions, 1431 flow. Second operand 3 states and 93 transitions. [2024-10-13 07:09:49,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 177 transitions, 1872 flow [2024-10-13 07:09:49,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 177 transitions, 1866 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-13 07:09:49,914 INFO L231 Difference]: Finished difference. Result has 149 places, 155 transitions, 1424 flow [2024-10-13 07:09:49,914 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1416, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1424, PETRI_PLACES=149, PETRI_TRANSITIONS=155} [2024-10-13 07:09:49,914 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 97 predicate places. [2024-10-13 07:09:49,915 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 155 transitions, 1424 flow [2024-10-13 07:09:49,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2024-10-13 07:09:49,915 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:49,915 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] [2024-10-13 07:09:49,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-13 07:09:49,916 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)] === [2024-10-13 07:09:49,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:49,916 INFO L85 PathProgramCache]: Analyzing trace with hash -493662504, now seen corresponding path program 11 times [2024-10-13 07:09:49,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:49,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030066055] [2024-10-13 07:09:49,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:49,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:49,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:51,604 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:51,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:51,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030066055] [2024-10-13 07:09:51,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030066055] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:09:51,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454523521] [2024-10-13 07:09:51,605 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 07:09:51,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:51,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:09:51,608 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:09:51,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-13 07:09:51,702 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 07:09:51,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:09:51,703 INFO L255 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-13 07:09:51,705 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:09:51,871 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 07:09:51,871 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-10-13 07:09:51,880 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:09:51,881 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:09:52,057 INFO L349 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2024-10-13 07:09:52,058 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 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 74 [2024-10-13 07:09:52,118 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 07:09:52,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454523521] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-13 07:09:52,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-13 07:09:52,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13, 9] total 24 [2024-10-13 07:09:52,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500027129] [2024-10-13 07:09:52,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:09:52,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 07:09:52,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:52,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 07:09:52,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2024-10-13 07:09:52,133 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-13 07:09:52,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 155 transitions, 1424 flow. Second operand has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 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) [2024-10-13 07:09:52,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:52,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-13 07:09:52,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:55,611 INFO L124 PetriNetUnfolderBase]: 17054/29410 cut-off events. [2024-10-13 07:09:55,611 INFO L125 PetriNetUnfolderBase]: For 115419/115527 co-relation queries the response was YES. [2024-10-13 07:09:55,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116412 conditions, 29410 events. 17054/29410 cut-off events. For 115419/115527 co-relation queries the response was YES. Maximal size of possible extension queue 1552. Compared 255928 event pairs, 6471 based on Foata normal form. 97/29063 useless extension candidates. Maximal degree in co-relation 116346. Up to 16942 conditions per place. [2024-10-13 07:09:55,981 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 218 selfloop transitions, 51 changer transitions 1/313 dead transitions. [2024-10-13 07:09:55,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 313 transitions, 2876 flow [2024-10-13 07:09:55,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-13 07:09:55,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-13 07:09:55,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 513 transitions. [2024-10-13 07:09:55,983 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6063829787234043 [2024-10-13 07:09:55,983 INFO L175 Difference]: Start difference. First operand has 149 places, 155 transitions, 1424 flow. Second operand 18 states and 513 transitions. [2024-10-13 07:09:55,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 313 transitions, 2876 flow [2024-10-13 07:09:57,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 313 transitions, 2872 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 07:09:57,105 INFO L231 Difference]: Finished difference. Result has 168 places, 174 transitions, 1855 flow [2024-10-13 07:09:57,105 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1420, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1855, PETRI_PLACES=168, PETRI_TRANSITIONS=174} [2024-10-13 07:09:57,106 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 116 predicate places. [2024-10-13 07:09:57,106 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 174 transitions, 1855 flow [2024-10-13 07:09:57,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 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) [2024-10-13 07:09:57,106 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:57,106 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] [2024-10-13 07:09:57,119 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-13 07:09:57,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-13 07:09:57,307 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)] === [2024-10-13 07:09:57,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:57,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1905502782, now seen corresponding path program 12 times [2024-10-13 07:09:57,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:57,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568862537] [2024-10-13 07:09:57,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:57,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:57,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:59,129 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:59,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:59,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568862537] [2024-10-13 07:09:59,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568862537] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:09:59,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915802613] [2024-10-13 07:09:59,130 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 07:09:59,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:59,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:09:59,132 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:09:59,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-13 07:09:59,212 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-10-13 07:09:59,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:09:59,214 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-13 07:09:59,216 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:09:59,389 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 07:09:59,389 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-10-13 07:09:59,403 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 07:09:59,404 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 07:09:59,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915802613] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:09:59,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 07:09:59,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 19 [2024-10-13 07:09:59,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085845163] [2024-10-13 07:09:59,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:09:59,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 07:09:59,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:59,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 07:09:59,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2024-10-13 07:09:59,417 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-13 07:09:59,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 174 transitions, 1855 flow. Second operand has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 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) [2024-10-13 07:09:59,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:59,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-13 07:09:59,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:10:03,281 INFO L124 PetriNetUnfolderBase]: 17883/30945 cut-off events. [2024-10-13 07:10:03,281 INFO L125 PetriNetUnfolderBase]: For 137900/138012 co-relation queries the response was YES. [2024-10-13 07:10:03,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126259 conditions, 30945 events. 17883/30945 cut-off events. For 137900/138012 co-relation queries the response was YES. Maximal size of possible extension queue 1681. Compared 272415 event pairs, 6165 based on Foata normal form. 101/30633 useless extension candidates. Maximal degree in co-relation 126189. Up to 19681 conditions per place. [2024-10-13 07:10:03,631 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 174 selfloop transitions, 40 changer transitions 5/262 dead transitions. [2024-10-13 07:10:03,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 262 transitions, 2758 flow [2024-10-13 07:10:03,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 07:10:03,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-13 07:10:03,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 319 transitions. [2024-10-13 07:10:03,632 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6170212765957447 [2024-10-13 07:10:03,633 INFO L175 Difference]: Start difference. First operand has 168 places, 174 transitions, 1855 flow. Second operand 11 states and 319 transitions. [2024-10-13 07:10:03,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 262 transitions, 2758 flow [2024-10-13 07:10:05,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 262 transitions, 2542 flow, removed 86 selfloop flow, removed 7 redundant places. [2024-10-13 07:10:05,280 INFO L231 Difference]: Finished difference. Result has 174 places, 178 transitions, 1787 flow [2024-10-13 07:10:05,281 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1639, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1787, PETRI_PLACES=174, PETRI_TRANSITIONS=178} [2024-10-13 07:10:05,281 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 122 predicate places. [2024-10-13 07:10:05,282 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 178 transitions, 1787 flow [2024-10-13 07:10:05,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 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) [2024-10-13 07:10:05,282 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:10:05,282 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] [2024-10-13 07:10:05,307 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-13 07:10:05,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-13 07:10:05,482 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)] === [2024-10-13 07:10:05,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:10:05,483 INFO L85 PathProgramCache]: Analyzing trace with hash -380715410, now seen corresponding path program 13 times [2024-10-13 07:10:05,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:10:05,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341721197] [2024-10-13 07:10:05,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:10:05,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:10:05,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:10:07,205 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:10:07,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:10:07,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341721197] [2024-10-13 07:10:07,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341721197] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:10:07,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407657872] [2024-10-13 07:10:07,205 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-13 07:10:07,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:10:07,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:10:07,206 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:10:07,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-13 07:10:07,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:10:07,283 INFO L255 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-13 07:10:07,285 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:10:07,444 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 07:10:07,444 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-10-13 07:10:07,451 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:10:07,451 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:10:07,581 INFO L349 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2024-10-13 07:10:07,581 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 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 74 [2024-10-13 07:10:07,620 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 07:10:07,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407657872] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-13 07:10:07,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-13 07:10:07,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [14, 9] total 25 [2024-10-13 07:10:07,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662423787] [2024-10-13 07:10:07,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:10:07,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 07:10:07,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:10:07,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 07:10:07,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2024-10-13 07:10:07,629 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-13 07:10:07,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 178 transitions, 1787 flow. Second operand has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 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) [2024-10-13 07:10:07,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:10:07,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-13 07:10:07,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:10:11,882 INFO L124 PetriNetUnfolderBase]: 19122/33210 cut-off events. [2024-10-13 07:10:11,882 INFO L125 PetriNetUnfolderBase]: For 133774/133898 co-relation queries the response was YES. [2024-10-13 07:10:12,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132258 conditions, 33210 events. 19122/33210 cut-off events. For 133774/133898 co-relation queries the response was YES. Maximal size of possible extension queue 1870. Compared 297856 event pairs, 5450 based on Foata normal form. 113/32793 useless extension candidates. Maximal degree in co-relation 132186. Up to 19264 conditions per place. [2024-10-13 07:10:12,418 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 182 selfloop transitions, 63 changer transitions 3/291 dead transitions. [2024-10-13 07:10:12,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 291 transitions, 2888 flow [2024-10-13 07:10:12,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-13 07:10:12,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-13 07:10:12,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 388 transitions. [2024-10-13 07:10:12,419 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6350245499181669 [2024-10-13 07:10:12,420 INFO L175 Difference]: Start difference. First operand has 174 places, 178 transitions, 1787 flow. Second operand 13 states and 388 transitions. [2024-10-13 07:10:12,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 291 transitions, 2888 flow [2024-10-13 07:10:13,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 291 transitions, 2776 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-10-13 07:10:13,508 INFO L231 Difference]: Finished difference. Result has 184 places, 185 transitions, 1991 flow [2024-10-13 07:10:13,508 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1679, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1991, PETRI_PLACES=184, PETRI_TRANSITIONS=185} [2024-10-13 07:10:13,508 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 132 predicate places. [2024-10-13 07:10:13,508 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 185 transitions, 1991 flow [2024-10-13 07:10:13,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 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) [2024-10-13 07:10:13,509 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:10:13,509 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] [2024-10-13 07:10:13,523 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-13 07:10:13,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-13 07:10:13,710 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)] === [2024-10-13 07:10:13,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:10:13,710 INFO L85 PathProgramCache]: Analyzing trace with hash -257905010, now seen corresponding path program 14 times [2024-10-13 07:10:13,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:10:13,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995554656] [2024-10-13 07:10:13,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:10:13,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:10:13,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat