./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash be394a9cdc866c1e1426a3fe296e99873bcf37ee5e7e1c9e487b239a3e0a8fbe --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 02:45:00,850 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 02:45:00,906 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 02:45:00,912 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 02:45:00,913 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 02:45:00,936 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 02:45:00,937 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 02:45:00,937 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 02:45:00,938 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 02:45:00,941 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 02:45:00,941 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 02:45:00,941 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 02:45:00,942 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 02:45:00,942 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 02:45:00,942 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 02:45:00,942 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 02:45:00,942 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 02:45:00,943 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 02:45:00,943 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 02:45:00,943 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 02:45:00,943 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 02:45:00,945 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 02:45:00,945 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 02:45:00,945 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 02:45:00,945 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 02:45:00,945 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 02:45:00,946 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 02:45:00,946 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 02:45:00,946 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 02:45:00,946 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 02:45:00,947 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 02:45:00,947 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 02:45:00,948 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:45:00,948 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 02:45:00,948 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 02:45:00,948 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 02:45:00,949 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 02:45:00,949 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 02:45:00,949 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 02:45:00,949 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 02:45:00,949 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 02:45:00,950 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 02:45:00,950 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be394a9cdc866c1e1426a3fe296e99873bcf37ee5e7e1c9e487b239a3e0a8fbe [2024-11-09 02:45:01,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 02:45:01,226 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 02:45:01,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 02:45:01,229 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 02:45:01,230 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 02:45:01,231 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c [2024-11-09 02:45:02,553 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 02:45:02,772 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 02:45:02,772 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c [2024-11-09 02:45:02,779 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfd5f62c1/f3618eb39de24fd5966de71f3f1e9531/FLAG5995d26a4 [2024-11-09 02:45:03,156 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfd5f62c1/f3618eb39de24fd5966de71f3f1e9531 [2024-11-09 02:45:03,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 02:45:03,160 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 02:45:03,161 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 02:45:03,161 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 02:45:03,170 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 02:45:03,174 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:45:03" (1/1) ... [2024-11-09 02:45:03,175 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cc4f7e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:45:03, skipping insertion in model container [2024-11-09 02:45:03,175 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:45:03" (1/1) ... [2024-11-09 02:45:03,199 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 02:45:03,373 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c[3986,3999] [2024-11-09 02:45:03,382 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:45:03,390 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 02:45:03,411 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c[3986,3999] [2024-11-09 02:45:03,418 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:45:03,433 INFO L204 MainTranslator]: Completed translation [2024-11-09 02:45:03,433 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:45:03 WrapperNode [2024-11-09 02:45:03,433 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 02:45:03,434 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 02:45:03,435 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 02:45:03,435 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 02:45:03,440 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:45:03" (1/1) ... [2024-11-09 02:45:03,448 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:45:03" (1/1) ... [2024-11-09 02:45:03,490 INFO L138 Inliner]: procedures = 24, calls = 46, calls flagged for inlining = 16, calls inlined = 20, statements flattened = 312 [2024-11-09 02:45:03,490 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 02:45:03,491 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 02:45:03,492 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 02:45:03,492 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 02:45:03,504 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:45:03" (1/1) ... [2024-11-09 02:45:03,504 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:45:03" (1/1) ... [2024-11-09 02:45:03,507 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:45:03" (1/1) ... [2024-11-09 02:45:03,522 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-09 02:45:03,522 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:45:03" (1/1) ... [2024-11-09 02:45:03,522 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:45:03" (1/1) ... [2024-11-09 02:45:03,532 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:45:03" (1/1) ... [2024-11-09 02:45:03,539 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:45:03" (1/1) ... [2024-11-09 02:45:03,545 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:45:03" (1/1) ... [2024-11-09 02:45:03,546 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:45:03" (1/1) ... [2024-11-09 02:45:03,552 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 02:45:03,553 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 02:45:03,553 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 02:45:03,553 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 02:45:03,554 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:45:03" (1/1) ... [2024-11-09 02:45:03,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:45:03,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:45:03,594 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 02:45:03,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 02:45:03,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 02:45:03,653 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 02:45:03,653 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 02:45:03,653 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 02:45:03,653 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 02:45:03,653 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-09 02:45:03,653 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-09 02:45:03,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 02:45:03,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 02:45:03,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 02:45:03,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 02:45:03,654 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-09 02:45:03,654 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-09 02:45:03,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 02:45:03,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 02:45:03,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 02:45:03,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 02:45:03,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 02:45:03,680 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 02:45:03,779 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 02:45:03,781 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 02:45:04,166 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 02:45:04,166 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 02:45:04,378 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 02:45:04,378 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-09 02:45:04,379 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:45:04 BoogieIcfgContainer [2024-11-09 02:45:04,379 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 02:45:04,381 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 02:45:04,381 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 02:45:04,383 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 02:45:04,383 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:45:03" (1/3) ... [2024-11-09 02:45:04,384 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2784c28a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:45:04, skipping insertion in model container [2024-11-09 02:45:04,384 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:45:03" (2/3) ... [2024-11-09 02:45:04,384 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2784c28a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:45:04, skipping insertion in model container [2024-11-09 02:45:04,384 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:45:04" (3/3) ... [2024-11-09 02:45:04,385 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring.wvr.c [2024-11-09 02:45:04,400 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 02:45:04,400 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 02:45:04,400 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 02:45:04,454 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-09 02:45:04,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 48 transitions, 117 flow [2024-11-09 02:45:04,575 INFO L124 PetriNetUnfolderBase]: 8/45 cut-off events. [2024-11-09 02:45:04,575 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 02:45:04,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 45 events. 8/45 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 71 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2024-11-09 02:45:04,578 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 48 transitions, 117 flow [2024-11-09 02:45:04,581 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 44 transitions, 106 flow [2024-11-09 02:45:04,591 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:45:04,599 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;@2c74661a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:45:04,600 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-09 02:45:04,613 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:45:04,613 INFO L124 PetriNetUnfolderBase]: 8/43 cut-off events. [2024-11-09 02:45:04,614 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 02:45:04,614 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:45:04,615 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] [2024-11-09 02:45:04,615 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:45:04,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:45:04,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1548629740, now seen corresponding path program 1 times [2024-11-09 02:45:04,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:45:04,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921030770] [2024-11-09 02:45:04,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:45:04,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:45:04,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:04,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:45:04,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:45:04,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921030770] [2024-11-09 02:45:04,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921030770] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:45:04,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:45:04,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 02:45:04,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492400315] [2024-11-09 02:45:04,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:45:04,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 02:45:04,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:45:04,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 02:45:04,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 02:45:04,908 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-09 02:45:04,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 106 flow. Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:04,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:45:04,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-09 02:45:04,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:45:05,271 INFO L124 PetriNetUnfolderBase]: 1049/1799 cut-off events. [2024-11-09 02:45:05,272 INFO L125 PetriNetUnfolderBase]: For 92/92 co-relation queries the response was YES. [2024-11-09 02:45:05,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3314 conditions, 1799 events. 1049/1799 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 9508 event pairs, 858 based on Foata normal form. 165/1779 useless extension candidates. Maximal degree in co-relation 3107. Up to 1394 conditions per place. [2024-11-09 02:45:05,289 INFO L140 encePairwiseOnDemand]: 46/48 looper letters, 32 selfloop transitions, 0 changer transitions 0/42 dead transitions. [2024-11-09 02:45:05,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 42 transitions, 166 flow [2024-11-09 02:45:05,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 02:45:05,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-09 02:45:05,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 60 transitions. [2024-11-09 02:45:05,301 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-09 02:45:05,303 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 106 flow. Second operand 2 states and 60 transitions. [2024-11-09 02:45:05,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 42 transitions, 166 flow [2024-11-09 02:45:05,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 42 transitions, 154 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-09 02:45:05,312 INFO L231 Difference]: Finished difference. Result has 41 places, 42 transitions, 90 flow [2024-11-09 02:45:05,313 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=90, PETRI_PLACES=41, PETRI_TRANSITIONS=42} [2024-11-09 02:45:05,318 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, -5 predicate places. [2024-11-09 02:45:05,319 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 42 transitions, 90 flow [2024-11-09 02:45:05,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:05,319 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:45:05,319 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] [2024-11-09 02:45:05,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 02:45:05,320 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:45:05,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:45:05,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1379772624, now seen corresponding path program 1 times [2024-11-09 02:45:05,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:45:05,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647268733] [2024-11-09 02:45:05,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:45:05,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:45:05,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:05,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:45:05,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:45:05,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647268733] [2024-11-09 02:45:05,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647268733] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:45:05,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:45:05,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:45:05,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071326964] [2024-11-09 02:45:05,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:45:05,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:45:05,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:45:05,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:45:05,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:45:05,529 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-09 02:45:05,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 42 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:05,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:45:05,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-09 02:45:05,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:45:05,719 INFO L124 PetriNetUnfolderBase]: 1040/1732 cut-off events. [2024-11-09 02:45:05,719 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-09 02:45:05,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3223 conditions, 1732 events. 1040/1732 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 8672 event pairs, 266 based on Foata normal form. 33/1662 useless extension candidates. Maximal degree in co-relation 3220. Up to 1251 conditions per place. [2024-11-09 02:45:05,729 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 42 selfloop transitions, 3 changer transitions 0/55 dead transitions. [2024-11-09 02:45:05,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 55 transitions, 208 flow [2024-11-09 02:45:05,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:45:05,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:45:05,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2024-11-09 02:45:05,732 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5902777777777778 [2024-11-09 02:45:05,732 INFO L175 Difference]: Start difference. First operand has 41 places, 42 transitions, 90 flow. Second operand 3 states and 85 transitions. [2024-11-09 02:45:05,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 55 transitions, 208 flow [2024-11-09 02:45:05,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 55 transitions, 208 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 02:45:05,735 INFO L231 Difference]: Finished difference. Result has 44 places, 44 transitions, 109 flow [2024-11-09 02:45:05,735 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=109, PETRI_PLACES=44, PETRI_TRANSITIONS=44} [2024-11-09 02:45:05,736 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, -2 predicate places. [2024-11-09 02:45:05,736 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 44 transitions, 109 flow [2024-11-09 02:45:05,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:05,737 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:45:05,737 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] [2024-11-09 02:45:05,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 02:45:05,737 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:45:05,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:45:05,738 INFO L85 PathProgramCache]: Analyzing trace with hash 58375550, now seen corresponding path program 2 times [2024-11-09 02:45:05,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:45:05,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757227954] [2024-11-09 02:45:05,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:45:05,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:45:05,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:05,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:45:05,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:45:05,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757227954] [2024-11-09 02:45:05,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757227954] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:45:05,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:45:05,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:45:05,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044656272] [2024-11-09 02:45:05,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:45:05,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:45:05,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:45:05,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:45:05,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:45:05,871 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-09 02:45:05,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 44 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:05,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:45:05,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-09 02:45:05,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:45:06,178 INFO L124 PetriNetUnfolderBase]: 871/1554 cut-off events. [2024-11-09 02:45:06,178 INFO L125 PetriNetUnfolderBase]: For 239/241 co-relation queries the response was YES. [2024-11-09 02:45:06,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3137 conditions, 1554 events. 871/1554 cut-off events. For 239/241 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 7971 event pairs, 315 based on Foata normal form. 32/1477 useless extension candidates. Maximal degree in co-relation 3132. Up to 794 conditions per place. [2024-11-09 02:45:06,194 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 45 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2024-11-09 02:45:06,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 57 transitions, 237 flow [2024-11-09 02:45:06,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:45:06,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:45:06,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2024-11-09 02:45:06,195 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5902777777777778 [2024-11-09 02:45:06,195 INFO L175 Difference]: Start difference. First operand has 44 places, 44 transitions, 109 flow. Second operand 3 states and 85 transitions. [2024-11-09 02:45:06,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 57 transitions, 237 flow [2024-11-09 02:45:06,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 57 transitions, 234 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:45:06,197 INFO L231 Difference]: Finished difference. Result has 46 places, 45 transitions, 118 flow [2024-11-09 02:45:06,197 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=46, PETRI_TRANSITIONS=45} [2024-11-09 02:45:06,197 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 0 predicate places. [2024-11-09 02:45:06,197 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 45 transitions, 118 flow [2024-11-09 02:45:06,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:06,198 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:45:06,198 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] [2024-11-09 02:45:06,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 02:45:06,202 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:45:06,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:45:06,203 INFO L85 PathProgramCache]: Analyzing trace with hash -2118938302, now seen corresponding path program 3 times [2024-11-09 02:45:06,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:45:06,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983299327] [2024-11-09 02:45:06,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:45:06,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:45:06,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:06,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:45:06,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:45:06,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983299327] [2024-11-09 02:45:06,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983299327] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:45:06,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:45:06,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:45:06,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490951030] [2024-11-09 02:45:06,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:45:06,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:45:06,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:45:06,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:45:06,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:45:06,291 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-09 02:45:06,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 45 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:06,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:45:06,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-09 02:45:06,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:45:06,514 INFO L124 PetriNetUnfolderBase]: 1319/2209 cut-off events. [2024-11-09 02:45:06,515 INFO L125 PetriNetUnfolderBase]: For 472/500 co-relation queries the response was YES. [2024-11-09 02:45:06,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4910 conditions, 2209 events. 1319/2209 cut-off events. For 472/500 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 12431 event pairs, 426 based on Foata normal form. 1/2109 useless extension candidates. Maximal degree in co-relation 4904. Up to 1175 conditions per place. [2024-11-09 02:45:06,528 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 48 selfloop transitions, 2 changer transitions 6/66 dead transitions. [2024-11-09 02:45:06,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 66 transitions, 286 flow [2024-11-09 02:45:06,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:45:06,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:45:06,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2024-11-09 02:45:06,532 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6527777777777778 [2024-11-09 02:45:06,532 INFO L175 Difference]: Start difference. First operand has 46 places, 45 transitions, 118 flow. Second operand 3 states and 94 transitions. [2024-11-09 02:45:06,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 66 transitions, 286 flow [2024-11-09 02:45:06,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 66 transitions, 283 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:45:06,536 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 124 flow [2024-11-09 02:45:06,536 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2024-11-09 02:45:06,538 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2024-11-09 02:45:06,538 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 124 flow [2024-11-09 02:45:06,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:06,539 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:45:06,539 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] [2024-11-09 02:45:06,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 02:45:06,539 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:45:06,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:45:06,540 INFO L85 PathProgramCache]: Analyzing trace with hash 2126932116, now seen corresponding path program 1 times [2024-11-09 02:45:06,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:45:06,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878280545] [2024-11-09 02:45:06,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:45:06,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:45:06,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:06,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:45:06,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:45:06,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878280545] [2024-11-09 02:45:06,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878280545] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:45:06,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:45:06,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:45:06,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18480904] [2024-11-09 02:45:06,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:45:06,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:45:06,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:45:06,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:45:06,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:45:06,647 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-09 02:45:06,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:06,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:45:06,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-09 02:45:06,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:45:06,772 INFO L124 PetriNetUnfolderBase]: 496/826 cut-off events. [2024-11-09 02:45:06,773 INFO L125 PetriNetUnfolderBase]: For 195/195 co-relation queries the response was YES. [2024-11-09 02:45:06,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1890 conditions, 826 events. 496/826 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3791 event pairs, 190 based on Foata normal form. 44/825 useless extension candidates. Maximal degree in co-relation 1883. Up to 546 conditions per place. [2024-11-09 02:45:06,780 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 39 selfloop transitions, 2 changer transitions 1/52 dead transitions. [2024-11-09 02:45:06,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 52 transitions, 228 flow [2024-11-09 02:45:06,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:45:06,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:45:06,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-11-09 02:45:06,782 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-11-09 02:45:06,784 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 124 flow. Second operand 3 states and 80 transitions. [2024-11-09 02:45:06,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 52 transitions, 228 flow [2024-11-09 02:45:06,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 52 transitions, 224 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-09 02:45:06,785 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 132 flow [2024-11-09 02:45:06,786 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2024-11-09 02:45:06,786 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2024-11-09 02:45:06,786 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 132 flow [2024-11-09 02:45:06,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:06,786 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:45:06,786 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] [2024-11-09 02:45:06,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 02:45:06,787 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:45:06,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:45:06,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1398072178, now seen corresponding path program 2 times [2024-11-09 02:45:06,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:45:06,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368052094] [2024-11-09 02:45:06,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:45:06,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:45:06,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:06,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:45:06,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:45:06,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368052094] [2024-11-09 02:45:06,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368052094] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:45:06,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:45:06,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:45:06,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230255051] [2024-11-09 02:45:06,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:45:06,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:45:06,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:45:06,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:45:06,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:45:06,955 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-09 02:45:06,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 132 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:06,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:45:06,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-09 02:45:06,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:45:07,153 INFO L124 PetriNetUnfolderBase]: 545/932 cut-off events. [2024-11-09 02:45:07,153 INFO L125 PetriNetUnfolderBase]: For 255/255 co-relation queries the response was YES. [2024-11-09 02:45:07,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2184 conditions, 932 events. 545/932 cut-off events. For 255/255 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4388 event pairs, 411 based on Foata normal form. 13/898 useless extension candidates. Maximal degree in co-relation 2176. Up to 745 conditions per place. [2024-11-09 02:45:07,158 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 35 selfloop transitions, 2 changer transitions 15/62 dead transitions. [2024-11-09 02:45:07,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 62 transitions, 271 flow [2024-11-09 02:45:07,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:45:07,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:45:07,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2024-11-09 02:45:07,160 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-11-09 02:45:07,160 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 132 flow. Second operand 5 states and 114 transitions. [2024-11-09 02:45:07,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 62 transitions, 271 flow [2024-11-09 02:45:07,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 62 transitions, 269 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:45:07,163 INFO L231 Difference]: Finished difference. Result has 56 places, 47 transitions, 146 flow [2024-11-09 02:45:07,164 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=146, PETRI_PLACES=56, PETRI_TRANSITIONS=47} [2024-11-09 02:45:07,164 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 10 predicate places. [2024-11-09 02:45:07,165 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 47 transitions, 146 flow [2024-11-09 02:45:07,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:07,165 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:45:07,166 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] [2024-11-09 02:45:07,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 02:45:07,166 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:45:07,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:45:07,167 INFO L85 PathProgramCache]: Analyzing trace with hash 437576286, now seen corresponding path program 1 times [2024-11-09 02:45:07,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:45:07,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357010892] [2024-11-09 02:45:07,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:45:07,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:45:07,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:07,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:45:07,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:45:07,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357010892] [2024-11-09 02:45:07,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357010892] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:45:07,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:45:07,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:45:07,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139295101] [2024-11-09 02:45:07,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:45:07,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:45:07,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:45:07,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:45:07,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:45:07,342 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-09 02:45:07,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:07,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:45:07,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-09 02:45:07,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:45:07,471 INFO L124 PetriNetUnfolderBase]: 570/981 cut-off events. [2024-11-09 02:45:07,471 INFO L125 PetriNetUnfolderBase]: For 322/322 co-relation queries the response was YES. [2024-11-09 02:45:07,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2334 conditions, 981 events. 570/981 cut-off events. For 322/322 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4716 event pairs, 437 based on Foata normal form. 6/941 useless extension candidates. Maximal degree in co-relation 2323. Up to 746 conditions per place. [2024-11-09 02:45:07,476 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 36 selfloop transitions, 2 changer transitions 15/63 dead transitions. [2024-11-09 02:45:07,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 63 transitions, 295 flow [2024-11-09 02:45:07,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 02:45:07,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 02:45:07,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2024-11-09 02:45:07,477 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5260416666666666 [2024-11-09 02:45:07,477 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 146 flow. Second operand 4 states and 101 transitions. [2024-11-09 02:45:07,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 63 transitions, 295 flow [2024-11-09 02:45:07,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 63 transitions, 283 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-11-09 02:45:07,479 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 152 flow [2024-11-09 02:45:07,480 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=152, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2024-11-09 02:45:07,481 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 10 predicate places. [2024-11-09 02:45:07,481 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 152 flow [2024-11-09 02:45:07,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:07,482 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:45:07,482 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] [2024-11-09 02:45:07,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 02:45:07,482 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:45:07,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:45:07,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1816335908, now seen corresponding path program 1 times [2024-11-09 02:45:07,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:45:07,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665199358] [2024-11-09 02:45:07,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:45:07,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:45:07,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:07,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:45:07,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:45:07,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665199358] [2024-11-09 02:45:07,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665199358] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:45:07,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:45:07,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:45:07,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305131680] [2024-11-09 02:45:07,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:45:07,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:45:07,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:45:07,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:45:07,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:45:07,624 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-09 02:45:07,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:07,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:45:07,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-09 02:45:07,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:45:07,760 INFO L124 PetriNetUnfolderBase]: 602/1061 cut-off events. [2024-11-09 02:45:07,760 INFO L125 PetriNetUnfolderBase]: For 303/303 co-relation queries the response was YES. [2024-11-09 02:45:07,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2486 conditions, 1061 events. 602/1061 cut-off events. For 303/303 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 5196 event pairs, 462 based on Foata normal form. 6/1012 useless extension candidates. Maximal degree in co-relation 2475. Up to 747 conditions per place. [2024-11-09 02:45:07,765 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 37 selfloop transitions, 2 changer transitions 17/66 dead transitions. [2024-11-09 02:45:07,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 66 transitions, 315 flow [2024-11-09 02:45:07,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 02:45:07,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 02:45:07,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-11-09 02:45:07,767 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-11-09 02:45:07,768 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 152 flow. Second operand 4 states and 102 transitions. [2024-11-09 02:45:07,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 66 transitions, 315 flow [2024-11-09 02:45:07,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 66 transitions, 307 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-09 02:45:07,770 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 160 flow [2024-11-09 02:45:07,770 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2024-11-09 02:45:07,770 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 12 predicate places. [2024-11-09 02:45:07,770 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 160 flow [2024-11-09 02:45:07,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:07,770 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:45:07,771 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] [2024-11-09 02:45:07,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 02:45:07,771 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:45:07,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:45:07,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1361437026, now seen corresponding path program 1 times [2024-11-09 02:45:07,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:45:07,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83227210] [2024-11-09 02:45:07,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:45:07,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:45:07,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:08,017 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:45:08,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:45:08,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83227210] [2024-11-09 02:45:08,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83227210] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:45:08,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709744441] [2024-11-09 02:45:08,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:45:08,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:45:08,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:45:08,023 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:45:08,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 02:45:08,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:08,129 INFO L255 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 02:45:08,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:45:08,283 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:45:08,284 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:45:08,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 4 [2024-11-09 02:45:08,486 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:45:08,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709744441] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:45:08,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:45:08,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2024-11-09 02:45:08,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514043291] [2024-11-09 02:45:08,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:45:08,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 02:45:08,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:45:08,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 02:45:08,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2024-11-09 02:45:08,489 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-09 02:45:08,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 160 flow. Second operand has 16 states, 16 states have (on average 18.0) internal successors, (288), 16 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:08,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:45:08,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-09 02:45:08,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:45:08,810 INFO L124 PetriNetUnfolderBase]: 772/1342 cut-off events. [2024-11-09 02:45:08,810 INFO L125 PetriNetUnfolderBase]: For 387/387 co-relation queries the response was YES. [2024-11-09 02:45:08,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3166 conditions, 1342 events. 772/1342 cut-off events. For 387/387 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 6989 event pairs, 380 based on Foata normal form. 36/1307 useless extension candidates. Maximal degree in co-relation 3154. Up to 649 conditions per place. [2024-11-09 02:45:08,817 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 43 selfloop transitions, 4 changer transitions 42/99 dead transitions. [2024-11-09 02:45:08,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 99 transitions, 488 flow [2024-11-09 02:45:08,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 02:45:08,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 02:45:08,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 199 transitions. [2024-11-09 02:45:08,819 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46064814814814814 [2024-11-09 02:45:08,819 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 160 flow. Second operand 9 states and 199 transitions. [2024-11-09 02:45:08,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 99 transitions, 488 flow [2024-11-09 02:45:08,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 99 transitions, 476 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-09 02:45:08,823 INFO L231 Difference]: Finished difference. Result has 67 places, 50 transitions, 180 flow [2024-11-09 02:45:08,823 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=180, PETRI_PLACES=67, PETRI_TRANSITIONS=50} [2024-11-09 02:45:08,825 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 21 predicate places. [2024-11-09 02:45:08,825 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 50 transitions, 180 flow [2024-11-09 02:45:08,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 18.0) internal successors, (288), 16 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:08,825 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:45:08,825 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] [2024-11-09 02:45:08,842 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 02:45:09,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:45:09,027 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:45:09,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:45:09,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1083772964, now seen corresponding path program 2 times [2024-11-09 02:45:09,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:45:09,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112050529] [2024-11-09 02:45:09,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:45:09,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:45:09,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:09,602 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:45:09,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:45:09,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112050529] [2024-11-09 02:45:09,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112050529] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:45:09,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299107814] [2024-11-09 02:45:09,603 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:45:09,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:45:09,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:45:09,606 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:45:09,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 02:45:09,712 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:45:09,713 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:45:09,714 INFO L255 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 02:45:09,717 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:45:09,812 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:45:09,812 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:45:09,854 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-09 02:45:09,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 11 [2024-11-09 02:45:09,867 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 02:45:09,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299107814] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 02:45:09,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 02:45:09,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 6] total 16 [2024-11-09 02:45:09,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094255148] [2024-11-09 02:45:09,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:45:09,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:45:09,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:45:09,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:45:09,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2024-11-09 02:45:09,873 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-11-09 02:45:09,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 50 transitions, 180 flow. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:09,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:45:09,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-11-09 02:45:09,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:45:10,094 INFO L124 PetriNetUnfolderBase]: 907/1447 cut-off events. [2024-11-09 02:45:10,095 INFO L125 PetriNetUnfolderBase]: For 682/694 co-relation queries the response was YES. [2024-11-09 02:45:10,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3580 conditions, 1447 events. 907/1447 cut-off events. For 682/694 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 7108 event pairs, 160 based on Foata normal form. 0/1367 useless extension candidates. Maximal degree in co-relation 3565. Up to 793 conditions per place. [2024-11-09 02:45:10,102 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 66 selfloop transitions, 5 changer transitions 1/80 dead transitions. [2024-11-09 02:45:10,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 80 transitions, 413 flow [2024-11-09 02:45:10,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:45:10,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:45:10,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-11-09 02:45:10,104 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-09 02:45:10,104 INFO L175 Difference]: Start difference. First operand has 67 places, 50 transitions, 180 flow. Second operand 5 states and 120 transitions. [2024-11-09 02:45:10,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 80 transitions, 413 flow [2024-11-09 02:45:10,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 80 transitions, 389 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-11-09 02:45:10,111 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 188 flow [2024-11-09 02:45:10,111 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=188, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2024-11-09 02:45:10,112 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 17 predicate places. [2024-11-09 02:45:10,113 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 188 flow [2024-11-09 02:45:10,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:10,114 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:45:10,114 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:45:10,129 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 02:45:10,314 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,SelfDestructingSolverStorable9 [2024-11-09 02:45:10,315 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:45:10,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:45:10,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1769912796, now seen corresponding path program 1 times [2024-11-09 02:45:10,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:45:10,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762327178] [2024-11-09 02:45:10,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:45:10,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:45:10,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:10,560 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 02:45:10,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:45:10,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762327178] [2024-11-09 02:45:10,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762327178] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:45:10,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818534460] [2024-11-09 02:45:10,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:45:10,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:45:10,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:45:10,562 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:45:10,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 02:45:10,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:10,678 INFO L255 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 02:45:10,680 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:45:10,803 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 02:45:10,803 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:45:10,987 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 02:45:10,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818534460] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:45:10,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:45:10,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-11-09 02:45:10,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105008761] [2024-11-09 02:45:10,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:45:10,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 02:45:10,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:45:10,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 02:45:10,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2024-11-09 02:45:10,990 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-09 02:45:10,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 188 flow. Second operand has 18 states, 18 states have (on average 17.88888888888889) internal successors, (322), 18 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:10,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:45:10,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-09 02:45:10,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:45:11,398 INFO L124 PetriNetUnfolderBase]: 928/1594 cut-off events. [2024-11-09 02:45:11,398 INFO L125 PetriNetUnfolderBase]: For 1435/1537 co-relation queries the response was YES. [2024-11-09 02:45:11,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4227 conditions, 1594 events. 928/1594 cut-off events. For 1435/1537 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 8422 event pairs, 487 based on Foata normal form. 59/1593 useless extension candidates. Maximal degree in co-relation 4214. Up to 793 conditions per place. [2024-11-09 02:45:11,405 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 41 selfloop transitions, 5 changer transitions 38/95 dead transitions. [2024-11-09 02:45:11,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 95 transitions, 499 flow [2024-11-09 02:45:11,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 02:45:11,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 02:45:11,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 195 transitions. [2024-11-09 02:45:11,407 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4513888888888889 [2024-11-09 02:45:11,407 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 188 flow. Second operand 9 states and 195 transitions. [2024-11-09 02:45:11,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 95 transitions, 499 flow [2024-11-09 02:45:11,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 95 transitions, 492 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-09 02:45:11,409 INFO L231 Difference]: Finished difference. Result has 74 places, 53 transitions, 212 flow [2024-11-09 02:45:11,409 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=212, PETRI_PLACES=74, PETRI_TRANSITIONS=53} [2024-11-09 02:45:11,410 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 28 predicate places. [2024-11-09 02:45:11,410 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 53 transitions, 212 flow [2024-11-09 02:45:11,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 17.88888888888889) internal successors, (322), 18 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:11,410 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:45:11,411 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:45:11,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 02:45:11,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:45:11,615 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:45:11,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:45:11,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1781446640, now seen corresponding path program 2 times [2024-11-09 02:45:11,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:45:11,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640255152] [2024-11-09 02:45:11,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:45:11,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:45:11,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:11,690 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 02:45:11,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:45:11,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640255152] [2024-11-09 02:45:11,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640255152] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:45:11,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:45:11,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:45:11,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095916349] [2024-11-09 02:45:11,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:45:11,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:45:11,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:45:11,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:45:11,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:45:11,693 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-09 02:45:11,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 53 transitions, 212 flow. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:11,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:45:11,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-09 02:45:11,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:45:11,906 INFO L124 PetriNetUnfolderBase]: 1153/2065 cut-off events. [2024-11-09 02:45:11,906 INFO L125 PetriNetUnfolderBase]: For 2698/2860 co-relation queries the response was YES. [2024-11-09 02:45:11,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5649 conditions, 2065 events. 1153/2065 cut-off events. For 2698/2860 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 12909 event pairs, 335 based on Foata normal form. 57/2093 useless extension candidates. Maximal degree in co-relation 5631. Up to 600 conditions per place. [2024-11-09 02:45:11,919 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 73 selfloop transitions, 8 changer transitions 0/92 dead transitions. [2024-11-09 02:45:11,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 92 transitions, 506 flow [2024-11-09 02:45:11,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 02:45:11,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 02:45:11,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2024-11-09 02:45:11,921 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6458333333333334 [2024-11-09 02:45:11,921 INFO L175 Difference]: Start difference. First operand has 74 places, 53 transitions, 212 flow. Second operand 4 states and 124 transitions. [2024-11-09 02:45:11,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 92 transitions, 506 flow [2024-11-09 02:45:11,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 92 transitions, 476 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-11-09 02:45:11,925 INFO L231 Difference]: Finished difference. Result has 69 places, 58 transitions, 255 flow [2024-11-09 02:45:11,925 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=255, PETRI_PLACES=69, PETRI_TRANSITIONS=58} [2024-11-09 02:45:11,925 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 23 predicate places. [2024-11-09 02:45:11,925 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 58 transitions, 255 flow [2024-11-09 02:45:11,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:11,926 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:45:11,926 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:45:11,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 02:45:11,926 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:45:11,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:45:11,926 INFO L85 PathProgramCache]: Analyzing trace with hash -841575620, now seen corresponding path program 3 times [2024-11-09 02:45:11,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:45:11,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485661550] [2024-11-09 02:45:11,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:45:11,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:45:11,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:13,102 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:45:13,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:45:13,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485661550] [2024-11-09 02:45:13,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485661550] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:45:13,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033986538] [2024-11-09 02:45:13,103 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:45:13,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:45:13,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:45:13,107 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:45:13,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 02:45:13,271 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 02:45:13,271 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:45:13,275 INFO L255 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-09 02:45:13,281 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:45:13,529 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:45:13,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 31 [2024-11-09 02:45:13,570 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 02:45:13,571 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:45:13,820 INFO L349 Elim1Store]: treesize reduction 4, result has 95.7 percent of original size [2024-11-09 02:45:13,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 101 [2024-11-09 02:45:13,999 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 02:45:14,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033986538] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 02:45:14,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 02:45:14,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [17, 8] total 27 [2024-11-09 02:45:14,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529092381] [2024-11-09 02:45:14,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:45:14,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 02:45:14,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:45:14,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 02:45:14,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2024-11-09 02:45:14,058 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-11-09 02:45:14,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 58 transitions, 255 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:14,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:45:14,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-11-09 02:45:14,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:45:15,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 02:45:16,287 INFO L124 PetriNetUnfolderBase]: 2221/3752 cut-off events. [2024-11-09 02:45:16,287 INFO L125 PetriNetUnfolderBase]: For 6355/6511 co-relation queries the response was YES. [2024-11-09 02:45:16,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10518 conditions, 3752 events. 2221/3752 cut-off events. For 6355/6511 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 22974 event pairs, 359 based on Foata normal form. 0/3596 useless extension candidates. Maximal degree in co-relation 10501. Up to 2047 conditions per place. [2024-11-09 02:45:16,309 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 78 selfloop transitions, 7 changer transitions 1/95 dead transitions. [2024-11-09 02:45:16,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 95 transitions, 567 flow [2024-11-09 02:45:16,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 02:45:16,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 02:45:16,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2024-11-09 02:45:16,312 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-11-09 02:45:16,312 INFO L175 Difference]: Start difference. First operand has 69 places, 58 transitions, 255 flow. Second operand 7 states and 147 transitions. [2024-11-09 02:45:16,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 95 transitions, 567 flow [2024-11-09 02:45:16,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 95 transitions, 555 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-11-09 02:45:16,316 INFO L231 Difference]: Finished difference. Result has 77 places, 60 transitions, 279 flow [2024-11-09 02:45:16,317 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=279, PETRI_PLACES=77, PETRI_TRANSITIONS=60} [2024-11-09 02:45:16,318 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 31 predicate places. [2024-11-09 02:45:16,318 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 60 transitions, 279 flow [2024-11-09 02:45:16,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:16,318 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:45:16,318 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:45:16,335 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 02:45:16,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:45:16,523 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:45:16,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:45:16,524 INFO L85 PathProgramCache]: Analyzing trace with hash -18317673, now seen corresponding path program 1 times [2024-11-09 02:45:16,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:45:16,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090937604] [2024-11-09 02:45:16,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:45:16,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:45:16,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:16,758 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 02:45:16,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:45:16,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090937604] [2024-11-09 02:45:16,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090937604] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:45:16,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132118809] [2024-11-09 02:45:16,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:45:16,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:45:16,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:45:16,761 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:45:16,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 02:45:16,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:16,898 INFO L255 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 02:45:16,901 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:45:17,039 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 02:45:17,040 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:45:17,250 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 02:45:17,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132118809] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:45:17,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:45:17,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 16 [2024-11-09 02:45:17,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566326234] [2024-11-09 02:45:17,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:45:17,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 02:45:17,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:45:17,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 02:45:17,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-11-09 02:45:17,253 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-09 02:45:17,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 60 transitions, 279 flow. Second operand has 16 states, 16 states have (on average 18.875) internal successors, (302), 16 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:17,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:45:17,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-09 02:45:17,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:45:17,832 INFO L124 PetriNetUnfolderBase]: 2149/4379 cut-off events. [2024-11-09 02:45:17,833 INFO L125 PetriNetUnfolderBase]: For 8556/9054 co-relation queries the response was YES. [2024-11-09 02:45:17,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12816 conditions, 4379 events. 2149/4379 cut-off events. For 8556/9054 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 33334 event pairs, 1246 based on Foata normal form. 154/4480 useless extension candidates. Maximal degree in co-relation 12797. Up to 2047 conditions per place. [2024-11-09 02:45:17,859 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 45 selfloop transitions, 5 changer transitions 39/101 dead transitions. [2024-11-09 02:45:17,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 101 transitions, 643 flow [2024-11-09 02:45:17,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 02:45:17,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 02:45:17,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 179 transitions. [2024-11-09 02:45:17,860 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4661458333333333 [2024-11-09 02:45:17,860 INFO L175 Difference]: Start difference. First operand has 77 places, 60 transitions, 279 flow. Second operand 8 states and 179 transitions. [2024-11-09 02:45:17,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 101 transitions, 643 flow [2024-11-09 02:45:17,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 101 transitions, 627 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-09 02:45:17,866 INFO L231 Difference]: Finished difference. Result has 84 places, 61 transitions, 295 flow [2024-11-09 02:45:17,866 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=295, PETRI_PLACES=84, PETRI_TRANSITIONS=61} [2024-11-09 02:45:17,867 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 38 predicate places. [2024-11-09 02:45:17,867 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 61 transitions, 295 flow [2024-11-09 02:45:17,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 18.875) internal successors, (302), 16 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:17,867 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:45:17,867 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:45:17,882 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 02:45:18,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 02:45:18,068 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:45:18,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:45:18,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1745556583, now seen corresponding path program 2 times [2024-11-09 02:45:18,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:45:18,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670285522] [2024-11-09 02:45:18,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:45:18,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:45:18,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:18,148 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 02:45:18,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:45:18,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670285522] [2024-11-09 02:45:18,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670285522] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:45:18,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:45:18,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:45:18,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889531642] [2024-11-09 02:45:18,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:45:18,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:45:18,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:45:18,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:45:18,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:45:18,151 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-09 02:45:18,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 61 transitions, 295 flow. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:18,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:45:18,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-09 02:45:18,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:45:18,729 INFO L124 PetriNetUnfolderBase]: 3124/6415 cut-off events. [2024-11-09 02:45:18,729 INFO L125 PetriNetUnfolderBase]: For 12288/12697 co-relation queries the response was YES. [2024-11-09 02:45:18,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18501 conditions, 6415 events. 3124/6415 cut-off events. For 12288/12697 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 50719 event pairs, 849 based on Foata normal form. 187/6593 useless extension candidates. Maximal degree in co-relation 18478. Up to 1755 conditions per place. [2024-11-09 02:45:18,774 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 89 selfloop transitions, 6 changer transitions 0/107 dead transitions. [2024-11-09 02:45:18,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 107 transitions, 706 flow [2024-11-09 02:45:18,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 02:45:18,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 02:45:18,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 121 transitions. [2024-11-09 02:45:18,775 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6302083333333334 [2024-11-09 02:45:18,776 INFO L175 Difference]: Start difference. First operand has 84 places, 61 transitions, 295 flow. Second operand 4 states and 121 transitions. [2024-11-09 02:45:18,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 107 transitions, 706 flow [2024-11-09 02:45:18,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 107 transitions, 678 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-11-09 02:45:18,796 INFO L231 Difference]: Finished difference. Result has 81 places, 64 transitions, 323 flow [2024-11-09 02:45:18,796 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=323, PETRI_PLACES=81, PETRI_TRANSITIONS=64} [2024-11-09 02:45:18,796 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 35 predicate places. [2024-11-09 02:45:18,796 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 64 transitions, 323 flow [2024-11-09 02:45:18,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:18,797 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:45:18,797 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:45:18,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 02:45:18,797 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:45:18,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:45:18,797 INFO L85 PathProgramCache]: Analyzing trace with hash 529099809, now seen corresponding path program 3 times [2024-11-09 02:45:18,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:45:18,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655516660] [2024-11-09 02:45:18,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:45:18,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:45:18,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:21,373 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:45:21,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:45:21,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655516660] [2024-11-09 02:45:21,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655516660] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:45:21,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918846791] [2024-11-09 02:45:21,374 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:45:21,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:45:21,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:45:21,375 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:45:21,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 02:45:21,542 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 02:45:21,542 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:45:21,545 INFO L255 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-09 02:45:21,548 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:45:22,111 INFO L349 Elim1Store]: treesize reduction 9, result has 85.7 percent of original size [2024-11-09 02:45:22,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 71 [2024-11-09 02:45:22,179 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 02:45:22,179 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:45:22,924 INFO L349 Elim1Store]: treesize reduction 8, result has 96.8 percent of original size [2024-11-09 02:45:22,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 79 treesize of output 267 [2024-11-09 02:45:34,182 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 02:45:34,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918846791] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:45:34,182 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:45:34,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 13, 12] total 43 [2024-11-09 02:45:34,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705100787] [2024-11-09 02:45:34,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:45:34,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-09 02:45:34,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:45:34,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-09 02:45:34,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1685, Unknown=0, NotChecked=0, Total=1806 [2024-11-09 02:45:34,753 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-11-09 02:45:34,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 64 transitions, 323 flow. Second operand has 43 states, 43 states have (on average 12.232558139534884) internal successors, (526), 43 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:34,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:45:34,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-11-09 02:45:34,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:45:55,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 02:45:56,979 INFO L124 PetriNetUnfolderBase]: 9065/15197 cut-off events. [2024-11-09 02:45:56,980 INFO L125 PetriNetUnfolderBase]: For 24386/24456 co-relation queries the response was YES. [2024-11-09 02:45:57,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44655 conditions, 15197 events. 9065/15197 cut-off events. For 24386/24456 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 107245 event pairs, 2916 based on Foata normal form. 2/15116 useless extension candidates. Maximal degree in co-relation 44632. Up to 9055 conditions per place. [2024-11-09 02:45:57,081 INFO L140 encePairwiseOnDemand]: 30/48 looper letters, 198 selfloop transitions, 68 changer transitions 23/297 dead transitions. [2024-11-09 02:45:57,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 297 transitions, 1830 flow [2024-11-09 02:45:57,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-09 02:45:57,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2024-11-09 02:45:57,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 748 transitions. [2024-11-09 02:45:57,084 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3246527777777778 [2024-11-09 02:45:57,084 INFO L175 Difference]: Start difference. First operand has 81 places, 64 transitions, 323 flow. Second operand 48 states and 748 transitions. [2024-11-09 02:45:57,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 297 transitions, 1830 flow [2024-11-09 02:45:57,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 297 transitions, 1816 flow, removed 7 selfloop flow, removed 0 redundant places. [2024-11-09 02:45:57,100 INFO L231 Difference]: Finished difference. Result has 142 places, 118 transitions, 835 flow [2024-11-09 02:45:57,100 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=835, PETRI_PLACES=142, PETRI_TRANSITIONS=118} [2024-11-09 02:45:57,101 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 96 predicate places. [2024-11-09 02:45:57,101 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 118 transitions, 835 flow [2024-11-09 02:45:57,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 12.232558139534884) internal successors, (526), 43 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:45:57,101 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:45:57,101 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:45:57,122 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 02:45:57,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-09 02:45:57,306 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:45:57,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:45:57,307 INFO L85 PathProgramCache]: Analyzing trace with hash 939236107, now seen corresponding path program 4 times [2024-11-09 02:45:57,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:45:57,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439242648] [2024-11-09 02:45:57,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:45:57,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:45:57,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:45:59,647 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:45:59,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:45:59,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439242648] [2024-11-09 02:45:59,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439242648] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:45:59,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46433542] [2024-11-09 02:45:59,648 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 02:45:59,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:45:59,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:45:59,650 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:45:59,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 02:45:59,789 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 02:45:59,790 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:45:59,792 INFO L255 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-09 02:45:59,795 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:46:00,813 INFO L349 Elim1Store]: treesize reduction 32, result has 68.9 percent of original size [2024-11-09 02:46:00,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 78 treesize of output 91 [2024-11-09 02:46:00,830 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 02:46:00,830 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:46:01,769 INFO L349 Elim1Store]: treesize reduction 22, result has 93.6 percent of original size [2024-11-09 02:46:01,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 92 treesize of output 347 [2024-11-09 02:46:32,733 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 02:46:32,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46433542] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:46:32,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:46:32,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 14, 13] total 47 [2024-11-09 02:46:32,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484814061] [2024-11-09 02:46:32,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:46:32,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-09 02:46:32,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:46:32,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-09 02:46:32,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1980, Unknown=0, NotChecked=0, Total=2162 [2024-11-09 02:46:33,364 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-11-09 02:46:33,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 118 transitions, 835 flow. Second operand has 47 states, 47 states have (on average 12.106382978723405) internal successors, (569), 47 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:46:33,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:46:33,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-11-09 02:46:33,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand