./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/test-easy1.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/test-easy1.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 935a7b7fee114f90b65d69dd73b2635844dd9aedca06c4cbc37a4ce046611c9d --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 02:50:58,080 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 02:50:58,155 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 02:50:58,159 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 02:50:58,160 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 02:50:58,183 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 02:50:58,185 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 02:50:58,185 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 02:50:58,186 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 02:50:58,187 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 02:50:58,188 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 02:50:58,188 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 02:50:58,188 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 02:50:58,190 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 02:50:58,190 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 02:50:58,190 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 02:50:58,191 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 02:50:58,191 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 02:50:58,191 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 02:50:58,191 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 02:50:58,191 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 02:50:58,192 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 02:50:58,194 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 02:50:58,195 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 02:50:58,195 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 02:50:58,195 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 02:50:58,195 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 02:50:58,195 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 02:50:58,196 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 02:50:58,196 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 02:50:58,196 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 02:50:58,196 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 02:50:58,196 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:50:58,196 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 02:50:58,196 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 02:50:58,197 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 02:50:58,197 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 02:50:58,197 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 02:50:58,197 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 02:50:58,197 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 02:50:58,197 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 02:50:58,198 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 02:50:58,198 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 935a7b7fee114f90b65d69dd73b2635844dd9aedca06c4cbc37a4ce046611c9d [2024-11-09 02:50:58,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 02:50:58,433 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 02:50:58,435 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 02:50:58,436 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 02:50:58,436 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 02:50:58,437 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-easy1.wvr.c [2024-11-09 02:50:59,801 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 02:50:59,982 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 02:50:59,984 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy1.wvr.c [2024-11-09 02:50:59,992 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b83b231a/004fc0d2ac5940bc8db86ed04a145c0a/FLAGc29b2041f [2024-11-09 02:51:00,007 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b83b231a/004fc0d2ac5940bc8db86ed04a145c0a [2024-11-09 02:51:00,009 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 02:51:00,013 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 02:51:00,014 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 02:51:00,014 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 02:51:00,021 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 02:51:00,022 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:51:00" (1/1) ... [2024-11-09 02:51:00,023 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62d1474d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:51:00, skipping insertion in model container [2024-11-09 02:51:00,023 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:51:00" (1/1) ... [2024-11-09 02:51:00,039 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 02:51:00,215 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/test-easy1.wvr.c[1902,1915] [2024-11-09 02:51:00,221 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:51:00,229 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 02:51:00,244 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/test-easy1.wvr.c[1902,1915] [2024-11-09 02:51:00,246 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:51:00,261 INFO L204 MainTranslator]: Completed translation [2024-11-09 02:51:00,261 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:51:00 WrapperNode [2024-11-09 02:51:00,261 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 02:51:00,262 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 02:51:00,262 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 02:51:00,263 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 02:51:00,268 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:51:00" (1/1) ... [2024-11-09 02:51:00,274 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:51:00" (1/1) ... [2024-11-09 02:51:00,293 INFO L138 Inliner]: procedures = 20, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 45 [2024-11-09 02:51:00,294 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 02:51:00,295 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 02:51:00,295 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 02:51:00,295 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 02:51:00,306 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:51:00" (1/1) ... [2024-11-09 02:51:00,306 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:51:00" (1/1) ... [2024-11-09 02:51:00,308 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:51:00" (1/1) ... [2024-11-09 02:51:00,319 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-09 02:51:00,319 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:51:00" (1/1) ... [2024-11-09 02:51:00,320 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:51:00" (1/1) ... [2024-11-09 02:51:00,323 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:51:00" (1/1) ... [2024-11-09 02:51:00,326 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:51:00" (1/1) ... [2024-11-09 02:51:00,327 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:51:00" (1/1) ... [2024-11-09 02:51:00,328 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:51:00" (1/1) ... [2024-11-09 02:51:00,329 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 02:51:00,330 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 02:51:00,330 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 02:51:00,331 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 02:51:00,331 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:51:00" (1/1) ... [2024-11-09 02:51:00,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:51:00,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:51:00,363 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 02:51:00,370 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 02:51:00,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 02:51:00,409 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 02:51:00,409 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 02:51:00,409 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 02:51:00,409 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 02:51:00,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 02:51:00,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 02:51:00,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 02:51:00,411 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 02:51:00,480 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 02:51:00,482 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 02:51:00,581 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 02:51:00,581 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 02:51:00,678 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 02:51:00,678 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 02:51:00,679 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:51:00 BoogieIcfgContainer [2024-11-09 02:51:00,679 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 02:51:00,680 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 02:51:00,681 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 02:51:00,683 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 02:51:00,683 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:51:00" (1/3) ... [2024-11-09 02:51:00,684 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61ae2e61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:51:00, skipping insertion in model container [2024-11-09 02:51:00,684 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:51:00" (2/3) ... [2024-11-09 02:51:00,684 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61ae2e61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:51:00, skipping insertion in model container [2024-11-09 02:51:00,684 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:51:00" (3/3) ... [2024-11-09 02:51:00,685 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy1.wvr.c [2024-11-09 02:51:00,701 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 02:51:00,702 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 02:51:00,702 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 02:51:00,761 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 02:51:00,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 23 places, 18 transitions, 50 flow [2024-11-09 02:51:00,820 INFO L124 PetriNetUnfolderBase]: 2/16 cut-off events. [2024-11-09 02:51:00,821 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 02:51:00,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25 conditions, 16 events. 2/16 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 0 based on Foata normal form. 0/13 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2024-11-09 02:51:00,827 INFO L82 GeneralOperation]: Start removeDead. Operand has 23 places, 18 transitions, 50 flow [2024-11-09 02:51:00,830 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 20 places, 15 transitions, 42 flow [2024-11-09 02:51:00,844 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:51:00,851 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;@625c5909, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:51:00,852 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-09 02:51:00,860 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:51:00,864 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2024-11-09 02:51:00,864 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 02:51:00,865 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:00,865 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:00,866 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:51:00,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:00,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1354130280, now seen corresponding path program 1 times [2024-11-09 02:51:00,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:00,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071433245] [2024-11-09 02:51:00,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:00,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:00,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:01,067 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 02:51:01,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:01,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071433245] [2024-11-09 02:51:01,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071433245] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:51:01,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:51:01,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 02:51:01,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402451620] [2024-11-09 02:51:01,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:51:01,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:51:01,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:01,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:51:01,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:51:01,108 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-09 02:51:01,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 15 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 02:51:01,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:01,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-09 02:51:01,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:01,157 INFO L124 PetriNetUnfolderBase]: 59/104 cut-off events. [2024-11-09 02:51:01,157 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-09 02:51:01,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 104 events. 59/104 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 273 event pairs, 8 based on Foata normal form. 1/70 useless extension candidates. Maximal degree in co-relation 179. Up to 77 conditions per place. [2024-11-09 02:51:01,160 INFO L140 encePairwiseOnDemand]: 14/18 looper letters, 17 selfloop transitions, 3 changer transitions 1/24 dead transitions. [2024-11-09 02:51:01,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 24 transitions, 111 flow [2024-11-09 02:51:01,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:51:01,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:51:01,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2024-11-09 02:51:01,173 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6851851851851852 [2024-11-09 02:51:01,175 INFO L175 Difference]: Start difference. First operand has 20 places, 15 transitions, 42 flow. Second operand 3 states and 37 transitions. [2024-11-09 02:51:01,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 24 transitions, 111 flow [2024-11-09 02:51:01,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 24 transitions, 97 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 02:51:01,183 INFO L231 Difference]: Finished difference. Result has 19 places, 17 transitions, 53 flow [2024-11-09 02:51:01,184 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=19, PETRI_TRANSITIONS=17} [2024-11-09 02:51:01,187 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, -1 predicate places. [2024-11-09 02:51:01,187 INFO L471 AbstractCegarLoop]: Abstraction has has 19 places, 17 transitions, 53 flow [2024-11-09 02:51:01,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 02:51:01,188 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:01,188 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:01,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 02:51:01,188 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:51:01,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:01,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1417842389, now seen corresponding path program 1 times [2024-11-09 02:51:01,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:01,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596292685] [2024-11-09 02:51:01,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:01,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:01,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:01,265 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 02:51:01,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:01,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596292685] [2024-11-09 02:51:01,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596292685] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:51:01,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:51:01,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:51:01,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810562083] [2024-11-09 02:51:01,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:51:01,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:51:01,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:01,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:51:01,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:51:01,269 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-09 02:51:01,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 17 transitions, 53 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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 02:51:01,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:01,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-09 02:51:01,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:01,346 INFO L124 PetriNetUnfolderBase]: 62/118 cut-off events. [2024-11-09 02:51:01,348 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-11-09 02:51:01,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 118 events. 62/118 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 337 event pairs, 6 based on Foata normal form. 4/122 useless extension candidates. Maximal degree in co-relation 112. Up to 56 conditions per place. [2024-11-09 02:51:01,351 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 25 selfloop transitions, 7 changer transitions 0/35 dead transitions. [2024-11-09 02:51:01,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 35 transitions, 169 flow [2024-11-09 02:51:01,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:51:01,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:51:01,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 55 transitions. [2024-11-09 02:51:01,354 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-11-09 02:51:01,354 INFO L175 Difference]: Start difference. First operand has 19 places, 17 transitions, 53 flow. Second operand 5 states and 55 transitions. [2024-11-09 02:51:01,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 35 transitions, 169 flow [2024-11-09 02:51:01,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 35 transitions, 165 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:51:01,357 INFO L231 Difference]: Finished difference. Result has 25 places, 23 transitions, 106 flow [2024-11-09 02:51:01,358 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=106, PETRI_PLACES=25, PETRI_TRANSITIONS=23} [2024-11-09 02:51:01,358 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 5 predicate places. [2024-11-09 02:51:01,359 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 23 transitions, 106 flow [2024-11-09 02:51:01,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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 02:51:01,359 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:01,359 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:01,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 02:51:01,360 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:51:01,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:01,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1979750107, now seen corresponding path program 2 times [2024-11-09 02:51:01,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:01,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592776228] [2024-11-09 02:51:01,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:01,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:01,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:01,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:01,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:01,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592776228] [2024-11-09 02:51:01,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592776228] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:51:01,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682636758] [2024-11-09 02:51:01,431 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:51:01,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:01,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:51:01,433 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 02:51:01,434 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 02:51:01,507 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:51:01,507 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:51:01,509 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 02:51:01,512 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:51:01,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:01,609 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:51:01,693 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 02:51:01,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682636758] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 02:51:01,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 02:51:01,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 6 [2024-11-09 02:51:01,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085284694] [2024-11-09 02:51:01,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:51:01,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:51:01,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:01,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:51:01,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 02:51:01,695 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-09 02:51:01,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 23 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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 02:51:01,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:01,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-09 02:51:01,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:01,758 INFO L124 PetriNetUnfolderBase]: 56/110 cut-off events. [2024-11-09 02:51:01,759 INFO L125 PetriNetUnfolderBase]: For 118/118 co-relation queries the response was YES. [2024-11-09 02:51:01,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 363 conditions, 110 events. 56/110 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 311 event pairs, 8 based on Foata normal form. 5/115 useless extension candidates. Maximal degree in co-relation 244. Up to 46 conditions per place. [2024-11-09 02:51:01,761 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 22 selfloop transitions, 8 changer transitions 2/35 dead transitions. [2024-11-09 02:51:01,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 35 transitions, 216 flow [2024-11-09 02:51:01,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 02:51:01,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 02:51:01,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 48 transitions. [2024-11-09 02:51:01,763 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-09 02:51:01,764 INFO L175 Difference]: Start difference. First operand has 25 places, 23 transitions, 106 flow. Second operand 4 states and 48 transitions. [2024-11-09 02:51:01,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 35 transitions, 216 flow [2024-11-09 02:51:01,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 35 transitions, 216 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 02:51:01,767 INFO L231 Difference]: Finished difference. Result has 29 places, 22 transitions, 127 flow [2024-11-09 02:51:01,768 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=127, PETRI_PLACES=29, PETRI_TRANSITIONS=22} [2024-11-09 02:51:01,768 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 9 predicate places. [2024-11-09 02:51:01,769 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 22 transitions, 127 flow [2024-11-09 02:51:01,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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 02:51:01,769 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:01,770 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:01,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 02:51:01,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:01,976 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:51:01,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:01,976 INFO L85 PathProgramCache]: Analyzing trace with hash -972711790, now seen corresponding path program 1 times [2024-11-09 02:51:01,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:01,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124289413] [2024-11-09 02:51:01,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:01,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:01,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:02,068 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 02:51:02,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:02,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124289413] [2024-11-09 02:51:02,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124289413] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:51:02,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:51:02,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:51:02,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135088193] [2024-11-09 02:51:02,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:51:02,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:51:02,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:02,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:51:02,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:51:02,071 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-09 02:51:02,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 127 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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 02:51:02,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:02,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-09 02:51:02,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:02,145 INFO L124 PetriNetUnfolderBase]: 54/116 cut-off events. [2024-11-09 02:51:02,145 INFO L125 PetriNetUnfolderBase]: For 244/244 co-relation queries the response was YES. [2024-11-09 02:51:02,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 428 conditions, 116 events. 54/116 cut-off events. For 244/244 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 338 event pairs, 4 based on Foata normal form. 6/122 useless extension candidates. Maximal degree in co-relation 220. Up to 44 conditions per place. [2024-11-09 02:51:02,147 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 29 selfloop transitions, 7 changer transitions 3/42 dead transitions. [2024-11-09 02:51:02,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 42 transitions, 293 flow [2024-11-09 02:51:02,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:51:02,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:51:02,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 58 transitions. [2024-11-09 02:51:02,150 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6444444444444445 [2024-11-09 02:51:02,150 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 127 flow. Second operand 5 states and 58 transitions. [2024-11-09 02:51:02,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 42 transitions, 293 flow [2024-11-09 02:51:02,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 42 transitions, 261 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-11-09 02:51:02,152 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 161 flow [2024-11-09 02:51:02,154 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=161, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2024-11-09 02:51:02,155 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 13 predicate places. [2024-11-09 02:51:02,155 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 161 flow [2024-11-09 02:51:02,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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 02:51:02,155 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:02,156 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:02,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 02:51:02,157 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:51:02,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:02,157 INFO L85 PathProgramCache]: Analyzing trace with hash -733518492, now seen corresponding path program 2 times [2024-11-09 02:51:02,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:02,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47718257] [2024-11-09 02:51:02,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:02,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:02,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:02,213 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 02:51:02,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:02,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47718257] [2024-11-09 02:51:02,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47718257] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:51:02,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:51:02,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:51:02,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995796996] [2024-11-09 02:51:02,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:51:02,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:51:02,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:02,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:51:02,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:51:02,215 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-09 02:51:02,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 161 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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 02:51:02,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:02,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-09 02:51:02,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:02,268 INFO L124 PetriNetUnfolderBase]: 43/93 cut-off events. [2024-11-09 02:51:02,269 INFO L125 PetriNetUnfolderBase]: For 178/178 co-relation queries the response was YES. [2024-11-09 02:51:02,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 93 events. 43/93 cut-off events. For 178/178 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 214 event pairs, 5 based on Foata normal form. 4/97 useless extension candidates. Maximal degree in co-relation 286. Up to 76 conditions per place. [2024-11-09 02:51:02,271 INFO L140 encePairwiseOnDemand]: 14/18 looper letters, 22 selfloop transitions, 5 changer transitions 0/30 dead transitions. [2024-11-09 02:51:02,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 30 transitions, 225 flow [2024-11-09 02:51:02,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 02:51:02,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 02:51:02,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 42 transitions. [2024-11-09 02:51:02,272 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-09 02:51:02,272 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 161 flow. Second operand 4 states and 42 transitions. [2024-11-09 02:51:02,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 30 transitions, 225 flow [2024-11-09 02:51:02,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 30 transitions, 219 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-09 02:51:02,274 INFO L231 Difference]: Finished difference. Result has 36 places, 25 transitions, 163 flow [2024-11-09 02:51:02,274 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=163, PETRI_PLACES=36, PETRI_TRANSITIONS=25} [2024-11-09 02:51:02,275 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 16 predicate places. [2024-11-09 02:51:02,277 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 25 transitions, 163 flow [2024-11-09 02:51:02,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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 02:51:02,278 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:02,278 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:02,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 02:51:02,279 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:51:02,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:02,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1230592891, now seen corresponding path program 1 times [2024-11-09 02:51:02,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:02,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505142935] [2024-11-09 02:51:02,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:02,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:02,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:02,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:02,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:02,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505142935] [2024-11-09 02:51:02,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505142935] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:51:02,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694530861] [2024-11-09 02:51:02,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:02,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:02,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:51:02,395 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 02:51:02,397 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 02:51:02,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:02,436 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 02:51:02,437 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:51:02,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:02,581 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:51:02,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:02,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694530861] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:51:02,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:51:02,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-11-09 02:51:02,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356450827] [2024-11-09 02:51:02,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:51:02,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 02:51:02,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:02,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 02:51:02,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2024-11-09 02:51:02,695 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-09 02:51:02,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 25 transitions, 163 flow. Second operand has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 13 states have internal predecessors, (99), 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 02:51:02,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:02,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-09 02:51:02,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:02,909 INFO L124 PetriNetUnfolderBase]: 129/260 cut-off events. [2024-11-09 02:51:02,909 INFO L125 PetriNetUnfolderBase]: For 679/679 co-relation queries the response was YES. [2024-11-09 02:51:02,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1114 conditions, 260 events. 129/260 cut-off events. For 679/679 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 985 event pairs, 1 based on Foata normal form. 24/284 useless extension candidates. Maximal degree in co-relation 492. Up to 94 conditions per place. [2024-11-09 02:51:02,912 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 49 selfloop transitions, 32 changer transitions 21/105 dead transitions. [2024-11-09 02:51:02,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 105 transitions, 833 flow [2024-11-09 02:51:02,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 02:51:02,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-09 02:51:02,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 182 transitions. [2024-11-09 02:51:02,914 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5947712418300654 [2024-11-09 02:51:02,914 INFO L175 Difference]: Start difference. First operand has 36 places, 25 transitions, 163 flow. Second operand 17 states and 182 transitions. [2024-11-09 02:51:02,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 105 transitions, 833 flow [2024-11-09 02:51:02,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 105 transitions, 810 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-11-09 02:51:02,918 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 519 flow [2024-11-09 02:51:02,918 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=519, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2024-11-09 02:51:02,918 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 37 predicate places. [2024-11-09 02:51:02,919 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 519 flow [2024-11-09 02:51:02,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 13 states have internal predecessors, (99), 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 02:51:02,919 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:02,919 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:02,932 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 02:51:03,119 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,SelfDestructingSolverStorable5 [2024-11-09 02:51:03,120 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:51:03,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:03,121 INFO L85 PathProgramCache]: Analyzing trace with hash -18214447, now seen corresponding path program 2 times [2024-11-09 02:51:03,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:03,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897971195] [2024-11-09 02:51:03,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:03,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:03,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:03,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:03,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:03,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897971195] [2024-11-09 02:51:03,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897971195] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:51:03,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11766788] [2024-11-09 02:51:03,176 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:51:03,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:03,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:51:03,178 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 02:51:03,179 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 02:51:03,214 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:51:03,214 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:51:03,215 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 02:51:03,215 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:51:03,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:03,283 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:51:03,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:03,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11766788] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:51:03,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:51:03,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 11 [2024-11-09 02:51:03,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92071401] [2024-11-09 02:51:03,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:51:03,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 02:51:03,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:03,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 02:51:03,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2024-11-09 02:51:03,356 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-09 02:51:03,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 519 flow. Second operand has 12 states, 12 states have (on average 7.75) internal successors, (93), 12 states have internal predecessors, (93), 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 02:51:03,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:03,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-09 02:51:03,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:03,528 INFO L124 PetriNetUnfolderBase]: 218/445 cut-off events. [2024-11-09 02:51:03,528 INFO L125 PetriNetUnfolderBase]: For 1966/1966 co-relation queries the response was YES. [2024-11-09 02:51:03,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2352 conditions, 445 events. 218/445 cut-off events. For 1966/1966 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1959 event pairs, 3 based on Foata normal form. 17/462 useless extension candidates. Maximal degree in co-relation 2273. Up to 152 conditions per place. [2024-11-09 02:51:03,532 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 77 selfloop transitions, 51 changer transitions 14/145 dead transitions. [2024-11-09 02:51:03,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 145 transitions, 1592 flow [2024-11-09 02:51:03,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 02:51:03,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-09 02:51:03,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-11-09 02:51:03,535 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-09 02:51:03,535 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 519 flow. Second operand 12 states and 144 transitions. [2024-11-09 02:51:03,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 145 transitions, 1592 flow [2024-11-09 02:51:03,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 145 transitions, 1164 flow, removed 214 selfloop flow, removed 2 redundant places. [2024-11-09 02:51:03,565 INFO L231 Difference]: Finished difference. Result has 68 places, 85 transitions, 790 flow [2024-11-09 02:51:03,565 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=790, PETRI_PLACES=68, PETRI_TRANSITIONS=85} [2024-11-09 02:51:03,566 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 48 predicate places. [2024-11-09 02:51:03,567 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 85 transitions, 790 flow [2024-11-09 02:51:03,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.75) internal successors, (93), 12 states have internal predecessors, (93), 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 02:51:03,568 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:03,568 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:03,581 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 02:51:03,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:03,769 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:51:03,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:03,773 INFO L85 PathProgramCache]: Analyzing trace with hash -108793195, now seen corresponding path program 3 times [2024-11-09 02:51:03,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:03,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760450267] [2024-11-09 02:51:03,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:03,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:03,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:03,817 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:03,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:03,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760450267] [2024-11-09 02:51:03,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760450267] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:51:03,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229187004] [2024-11-09 02:51:03,818 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:51:03,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:03,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:51:03,820 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 02:51:03,825 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 02:51:03,863 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 02:51:03,863 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:51:03,864 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 02:51:03,865 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:51:03,907 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:03,907 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:51:03,959 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:03,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229187004] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:51:03,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:51:03,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 10 [2024-11-09 02:51:03,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637581904] [2024-11-09 02:51:03,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:51:03,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 02:51:03,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:03,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 02:51:03,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2024-11-09 02:51:03,961 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-09 02:51:03,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 85 transitions, 790 flow. Second operand has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 11 states have internal predecessors, (84), 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 02:51:03,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:03,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-09 02:51:03,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:04,111 INFO L124 PetriNetUnfolderBase]: 232/475 cut-off events. [2024-11-09 02:51:04,111 INFO L125 PetriNetUnfolderBase]: For 2529/2529 co-relation queries the response was YES. [2024-11-09 02:51:04,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2248 conditions, 475 events. 232/475 cut-off events. For 2529/2529 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2141 event pairs, 4 based on Foata normal form. 16/491 useless extension candidates. Maximal degree in co-relation 2150. Up to 141 conditions per place. [2024-11-09 02:51:04,114 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 81 selfloop transitions, 58 changer transitions 0/142 dead transitions. [2024-11-09 02:51:04,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 142 transitions, 1433 flow [2024-11-09 02:51:04,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 02:51:04,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 02:51:04,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-11-09 02:51:04,115 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6060606060606061 [2024-11-09 02:51:04,115 INFO L175 Difference]: Start difference. First operand has 68 places, 85 transitions, 790 flow. Second operand 11 states and 120 transitions. [2024-11-09 02:51:04,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 142 transitions, 1433 flow [2024-11-09 02:51:04,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 142 transitions, 1280 flow, removed 62 selfloop flow, removed 5 redundant places. [2024-11-09 02:51:04,123 INFO L231 Difference]: Finished difference. Result has 75 places, 104 transitions, 1076 flow [2024-11-09 02:51:04,123 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1076, PETRI_PLACES=75, PETRI_TRANSITIONS=104} [2024-11-09 02:51:04,124 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 55 predicate places. [2024-11-09 02:51:04,124 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 104 transitions, 1076 flow [2024-11-09 02:51:04,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 11 states have internal predecessors, (84), 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 02:51:04,124 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:04,124 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:04,136 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 02:51:04,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:04,328 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:51:04,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:04,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1001797831, now seen corresponding path program 4 times [2024-11-09 02:51:04,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:04,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094467996] [2024-11-09 02:51:04,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:04,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:04,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:04,364 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:04,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:04,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094467996] [2024-11-09 02:51:04,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094467996] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:51:04,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372027272] [2024-11-09 02:51:04,365 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 02:51:04,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:04,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:51:04,367 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 02:51:04,368 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 02:51:04,401 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 02:51:04,401 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:51:04,402 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 02:51:04,402 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:51:04,442 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:04,443 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:51:04,478 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:04,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372027272] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:51:04,479 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:51:04,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-09 02:51:04,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299100925] [2024-11-09 02:51:04,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:51:04,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 02:51:04,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:04,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 02:51:04,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-09 02:51:04,481 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-09 02:51:04,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 104 transitions, 1076 flow. Second operand has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 11 states have internal predecessors, (84), 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 02:51:04,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:04,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-09 02:51:04,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:04,667 INFO L124 PetriNetUnfolderBase]: 292/602 cut-off events. [2024-11-09 02:51:04,667 INFO L125 PetriNetUnfolderBase]: For 2472/2472 co-relation queries the response was YES. [2024-11-09 02:51:04,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3071 conditions, 602 events. 292/602 cut-off events. For 2472/2472 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2903 event pairs, 11 based on Foata normal form. 14/616 useless extension candidates. Maximal degree in co-relation 2504. Up to 294 conditions per place. [2024-11-09 02:51:04,689 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 97 selfloop transitions, 63 changer transitions 0/163 dead transitions. [2024-11-09 02:51:04,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 163 transitions, 1903 flow [2024-11-09 02:51:04,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 02:51:04,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-09 02:51:04,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2024-11-09 02:51:04,691 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5601851851851852 [2024-11-09 02:51:04,691 INFO L175 Difference]: Start difference. First operand has 75 places, 104 transitions, 1076 flow. Second operand 12 states and 121 transitions. [2024-11-09 02:51:04,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 163 transitions, 1903 flow [2024-11-09 02:51:04,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 163 transitions, 1842 flow, removed 29 selfloop flow, removed 1 redundant places. [2024-11-09 02:51:04,702 INFO L231 Difference]: Finished difference. Result has 91 places, 134 transitions, 1634 flow [2024-11-09 02:51:04,703 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1047, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1634, PETRI_PLACES=91, PETRI_TRANSITIONS=134} [2024-11-09 02:51:04,704 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 71 predicate places. [2024-11-09 02:51:04,704 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 134 transitions, 1634 flow [2024-11-09 02:51:04,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 11 states have internal predecessors, (84), 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 02:51:04,705 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:04,705 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:04,722 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 02:51:04,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:04,910 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:51:04,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:04,911 INFO L85 PathProgramCache]: Analyzing trace with hash -2045865696, now seen corresponding path program 5 times [2024-11-09 02:51:04,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:04,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469026889] [2024-11-09 02:51:04,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:04,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:04,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:04,952 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:04,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:04,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469026889] [2024-11-09 02:51:04,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469026889] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:51:04,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659883867] [2024-11-09 02:51:04,952 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 02:51:04,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:04,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:51:04,956 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 02:51:04,957 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 02:51:04,993 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:51:04,993 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:51:04,994 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 02:51:04,995 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:51:05,025 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:05,025 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:51:05,057 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:05,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659883867] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:51:05,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:51:05,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-09 02:51:05,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642739037] [2024-11-09 02:51:05,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:51:05,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 02:51:05,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:05,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 02:51:05,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-11-09 02:51:05,059 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-09 02:51:05,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 134 transitions, 1634 flow. Second operand has 10 states, 10 states have (on average 7.7) internal successors, (77), 10 states have internal predecessors, (77), 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 02:51:05,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:05,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-09 02:51:05,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:05,176 INFO L124 PetriNetUnfolderBase]: 286/588 cut-off events. [2024-11-09 02:51:05,177 INFO L125 PetriNetUnfolderBase]: For 2668/2668 co-relation queries the response was YES. [2024-11-09 02:51:05,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3316 conditions, 588 events. 286/588 cut-off events. For 2668/2668 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2797 event pairs, 15 based on Foata normal form. 4/592 useless extension candidates. Maximal degree in co-relation 2793. Up to 190 conditions per place. [2024-11-09 02:51:05,181 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 114 selfloop transitions, 44 changer transitions 5/166 dead transitions. [2024-11-09 02:51:05,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 166 transitions, 2175 flow [2024-11-09 02:51:05,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 02:51:05,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 02:51:05,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-11-09 02:51:05,182 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5740740740740741 [2024-11-09 02:51:05,182 INFO L175 Difference]: Start difference. First operand has 91 places, 134 transitions, 1634 flow. Second operand 9 states and 93 transitions. [2024-11-09 02:51:05,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 166 transitions, 2175 flow [2024-11-09 02:51:05,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 166 transitions, 2066 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-11-09 02:51:05,194 INFO L231 Difference]: Finished difference. Result has 96 places, 135 transitions, 1664 flow [2024-11-09 02:51:05,194 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1531, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1664, PETRI_PLACES=96, PETRI_TRANSITIONS=135} [2024-11-09 02:51:05,195 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 76 predicate places. [2024-11-09 02:51:05,195 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 135 transitions, 1664 flow [2024-11-09 02:51:05,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.7) internal successors, (77), 10 states have internal predecessors, (77), 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 02:51:05,195 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:05,195 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:05,209 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 02:51:05,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:05,400 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:51:05,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:05,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1087164560, now seen corresponding path program 6 times [2024-11-09 02:51:05,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:05,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411584196] [2024-11-09 02:51:05,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:05,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:05,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:05,476 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:05,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:05,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411584196] [2024-11-09 02:51:05,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411584196] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:51:05,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52681284] [2024-11-09 02:51:05,477 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 02:51:05,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:05,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:51:05,479 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 02:51:05,486 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 02:51:05,520 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-09 02:51:05,520 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:51:05,521 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 02:51:05,522 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:51:05,588 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:05,588 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:51:05,620 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:05,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52681284] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:51:05,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:51:05,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 4] total 14 [2024-11-09 02:51:05,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072710891] [2024-11-09 02:51:05,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:51:05,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 02:51:05,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:05,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 02:51:05,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2024-11-09 02:51:05,622 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-09 02:51:05,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 135 transitions, 1664 flow. Second operand has 15 states, 15 states have (on average 7.666666666666667) internal successors, (115), 15 states have internal predecessors, (115), 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 02:51:05,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:05,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-09 02:51:05,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:05,824 INFO L124 PetriNetUnfolderBase]: 388/792 cut-off events. [2024-11-09 02:51:05,824 INFO L125 PetriNetUnfolderBase]: For 4458/4458 co-relation queries the response was YES. [2024-11-09 02:51:05,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4453 conditions, 792 events. 388/792 cut-off events. For 4458/4458 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4136 event pairs, 24 based on Foata normal form. 29/821 useless extension candidates. Maximal degree in co-relation 3923. Up to 502 conditions per place. [2024-11-09 02:51:05,831 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 156 selfloop transitions, 49 changer transitions 1/209 dead transitions. [2024-11-09 02:51:05,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 209 transitions, 2754 flow [2024-11-09 02:51:05,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 02:51:05,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 02:51:05,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-11-09 02:51:05,833 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6555555555555556 [2024-11-09 02:51:05,833 INFO L175 Difference]: Start difference. First operand has 96 places, 135 transitions, 1664 flow. Second operand 10 states and 118 transitions. [2024-11-09 02:51:05,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 209 transitions, 2754 flow [2024-11-09 02:51:05,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 209 transitions, 2648 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-11-09 02:51:05,848 INFO L231 Difference]: Finished difference. Result has 107 places, 169 transitions, 2158 flow [2024-11-09 02:51:05,848 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1595, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2158, PETRI_PLACES=107, PETRI_TRANSITIONS=169} [2024-11-09 02:51:05,848 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 87 predicate places. [2024-11-09 02:51:05,849 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 169 transitions, 2158 flow [2024-11-09 02:51:05,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.666666666666667) internal successors, (115), 15 states have internal predecessors, (115), 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 02:51:05,849 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:05,849 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:05,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 02:51:06,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:06,050 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:51:06,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:06,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1559127082, now seen corresponding path program 7 times [2024-11-09 02:51:06,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:06,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602324916] [2024-11-09 02:51:06,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:06,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:06,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:06,106 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:51:06,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:06,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602324916] [2024-11-09 02:51:06,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602324916] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:51:06,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103093843] [2024-11-09 02:51:06,106 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 02:51:06,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:06,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:51:06,108 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:51:06,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 02:51:06,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:06,143 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 02:51:06,144 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:51:06,208 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:06,208 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:51:06,223 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 02:51:06,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103093843] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:51:06,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:51:06,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 10 [2024-11-09 02:51:06,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225048420] [2024-11-09 02:51:06,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:51:06,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 02:51:06,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:06,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 02:51:06,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-09 02:51:06,225 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-09 02:51:06,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 169 transitions, 2158 flow. Second operand has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 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 02:51:06,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:06,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-09 02:51:06,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:06,473 INFO L124 PetriNetUnfolderBase]: 576/1169 cut-off events. [2024-11-09 02:51:06,473 INFO L125 PetriNetUnfolderBase]: For 8650/8650 co-relation queries the response was YES. [2024-11-09 02:51:06,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7112 conditions, 1169 events. 576/1169 cut-off events. For 8650/8650 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 6812 event pairs, 41 based on Foata normal form. 19/1188 useless extension candidates. Maximal degree in co-relation 6398. Up to 719 conditions per place. [2024-11-09 02:51:06,481 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 188 selfloop transitions, 89 changer transitions 5/285 dead transitions. [2024-11-09 02:51:06,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 285 transitions, 4037 flow [2024-11-09 02:51:06,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 02:51:06,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 02:51:06,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-11-09 02:51:06,482 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6414141414141414 [2024-11-09 02:51:06,482 INFO L175 Difference]: Start difference. First operand has 107 places, 169 transitions, 2158 flow. Second operand 11 states and 127 transitions. [2024-11-09 02:51:06,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 285 transitions, 4037 flow [2024-11-09 02:51:06,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 285 transitions, 3940 flow, removed 30 selfloop flow, removed 3 redundant places. [2024-11-09 02:51:06,509 INFO L231 Difference]: Finished difference. Result has 122 places, 236 transitions, 3396 flow [2024-11-09 02:51:06,509 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=2068, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3396, PETRI_PLACES=122, PETRI_TRANSITIONS=236} [2024-11-09 02:51:06,509 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 102 predicate places. [2024-11-09 02:51:06,510 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 236 transitions, 3396 flow [2024-11-09 02:51:06,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 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 02:51:06,510 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:06,510 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:06,524 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 02:51:06,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-09 02:51:06,711 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:51:06,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:06,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1018235034, now seen corresponding path program 8 times [2024-11-09 02:51:06,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:06,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19726235] [2024-11-09 02:51:06,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:06,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:06,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:06,778 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:06,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:06,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19726235] [2024-11-09 02:51:06,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19726235] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:51:06,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57381233] [2024-11-09 02:51:06,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:51:06,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:06,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:51:06,781 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:51:06,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 02:51:06,822 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:51:06,822 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:51:06,823 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 02:51:06,824 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:51:06,894 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:06,895 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:51:06,926 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:06,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57381233] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:51:06,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:51:06,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 4] total 14 [2024-11-09 02:51:06,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301573783] [2024-11-09 02:51:06,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:51:06,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 02:51:06,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:06,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 02:51:06,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2024-11-09 02:51:06,928 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-09 02:51:06,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 236 transitions, 3396 flow. Second operand has 15 states, 15 states have (on average 7.6) internal successors, (114), 15 states have internal predecessors, (114), 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 02:51:06,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:06,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-09 02:51:06,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:07,254 INFO L124 PetriNetUnfolderBase]: 681/1349 cut-off events. [2024-11-09 02:51:07,254 INFO L125 PetriNetUnfolderBase]: For 15564/15564 co-relation queries the response was YES. [2024-11-09 02:51:07,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9293 conditions, 1349 events. 681/1349 cut-off events. For 15564/15564 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 8026 event pairs, 59 based on Foata normal form. 36/1385 useless extension candidates. Maximal degree in co-relation 8696. Up to 980 conditions per place. [2024-11-09 02:51:07,269 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 230 selfloop transitions, 81 changer transitions 5/319 dead transitions. [2024-11-09 02:51:07,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 319 transitions, 5070 flow [2024-11-09 02:51:07,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 02:51:07,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 02:51:07,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-11-09 02:51:07,270 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6222222222222222 [2024-11-09 02:51:07,270 INFO L175 Difference]: Start difference. First operand has 122 places, 236 transitions, 3396 flow. Second operand 10 states and 112 transitions. [2024-11-09 02:51:07,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 319 transitions, 5070 flow [2024-11-09 02:51:07,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 319 transitions, 4817 flow, removed 125 selfloop flow, removed 1 redundant places. [2024-11-09 02:51:07,319 INFO L231 Difference]: Finished difference. Result has 135 places, 278 transitions, 4076 flow [2024-11-09 02:51:07,320 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=3080, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4076, PETRI_PLACES=135, PETRI_TRANSITIONS=278} [2024-11-09 02:51:07,320 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 115 predicate places. [2024-11-09 02:51:07,320 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 278 transitions, 4076 flow [2024-11-09 02:51:07,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.6) internal successors, (114), 15 states have internal predecessors, (114), 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 02:51:07,320 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:07,321 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:07,337 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 02:51:07,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-09 02:51:07,521 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:51:07,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:07,522 INFO L85 PathProgramCache]: Analyzing trace with hash -602127284, now seen corresponding path program 9 times [2024-11-09 02:51:07,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:07,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722012569] [2024-11-09 02:51:07,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:07,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:07,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:07,568 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:07,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:07,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722012569] [2024-11-09 02:51:07,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722012569] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:51:07,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813329573] [2024-11-09 02:51:07,569 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:51:07,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:07,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:51:07,571 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:51:07,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 02:51:07,606 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 02:51:07,606 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:51:07,607 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 02:51:07,608 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:51:07,645 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 02:51:07,646 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 02:51:07,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813329573] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:51:07,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 02:51:07,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2024-11-09 02:51:07,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681775978] [2024-11-09 02:51:07,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:51:07,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 02:51:07,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:07,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 02:51:07,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-09 02:51:07,647 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-09 02:51:07,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 278 transitions, 4076 flow. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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 02:51:07,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:07,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-09 02:51:07,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:07,843 INFO L124 PetriNetUnfolderBase]: 676/1312 cut-off events. [2024-11-09 02:51:07,843 INFO L125 PetriNetUnfolderBase]: For 16219/16219 co-relation queries the response was YES. [2024-11-09 02:51:07,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9418 conditions, 1312 events. 676/1312 cut-off events. For 16219/16219 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 7686 event pairs, 8 based on Foata normal form. 14/1326 useless extension candidates. Maximal degree in co-relation 9185. Up to 625 conditions per place. [2024-11-09 02:51:07,853 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 212 selfloop transitions, 16 changer transitions 74/305 dead transitions. [2024-11-09 02:51:07,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 305 transitions, 4951 flow [2024-11-09 02:51:07,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:51:07,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:51:07,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 61 transitions. [2024-11-09 02:51:07,854 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5648148148148148 [2024-11-09 02:51:07,854 INFO L175 Difference]: Start difference. First operand has 135 places, 278 transitions, 4076 flow. Second operand 6 states and 61 transitions. [2024-11-09 02:51:07,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 305 transitions, 4951 flow [2024-11-09 02:51:07,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 305 transitions, 4767 flow, removed 81 selfloop flow, removed 3 redundant places. [2024-11-09 02:51:07,901 INFO L231 Difference]: Finished difference. Result has 139 places, 224 transitions, 3274 flow [2024-11-09 02:51:07,901 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=3896, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3274, PETRI_PLACES=139, PETRI_TRANSITIONS=224} [2024-11-09 02:51:07,902 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 119 predicate places. [2024-11-09 02:51:07,902 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 224 transitions, 3274 flow [2024-11-09 02:51:07,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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 02:51:07,902 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:07,902 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:07,915 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 02:51:08,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 02:51:08,103 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:51:08,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:08,103 INFO L85 PathProgramCache]: Analyzing trace with hash 685748318, now seen corresponding path program 10 times [2024-11-09 02:51:08,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:08,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431798462] [2024-11-09 02:51:08,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:08,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:08,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:08,169 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:08,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:08,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431798462] [2024-11-09 02:51:08,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431798462] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:51:08,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518773355] [2024-11-09 02:51:08,170 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 02:51:08,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:08,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:51:08,173 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:51:08,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 02:51:08,216 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 02:51:08,217 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:51:08,217 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 02:51:08,218 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:51:08,275 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:08,275 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:51:08,341 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:08,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518773355] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:51:08,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:51:08,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2024-11-09 02:51:08,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650008492] [2024-11-09 02:51:08,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:51:08,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 02:51:08,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:08,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 02:51:08,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2024-11-09 02:51:08,343 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-09 02:51:08,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 224 transitions, 3274 flow. Second operand has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 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 02:51:08,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:08,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-09 02:51:08,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:08,667 INFO L124 PetriNetUnfolderBase]: 519/1067 cut-off events. [2024-11-09 02:51:08,667 INFO L125 PetriNetUnfolderBase]: For 17071/17071 co-relation queries the response was YES. [2024-11-09 02:51:08,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8055 conditions, 1067 events. 519/1067 cut-off events. For 17071/17071 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6267 event pairs, 6 based on Foata normal form. 4/1071 useless extension candidates. Maximal degree in co-relation 7833. Up to 281 conditions per place. [2024-11-09 02:51:08,675 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 101 selfloop transitions, 207 changer transitions 2/313 dead transitions. [2024-11-09 02:51:08,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 313 transitions, 5015 flow [2024-11-09 02:51:08,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 02:51:08,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-09 02:51:08,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 189 transitions. [2024-11-09 02:51:08,676 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5526315789473685 [2024-11-09 02:51:08,676 INFO L175 Difference]: Start difference. First operand has 139 places, 224 transitions, 3274 flow. Second operand 19 states and 189 transitions. [2024-11-09 02:51:08,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 313 transitions, 5015 flow [2024-11-09 02:51:08,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 313 transitions, 4803 flow, removed 57 selfloop flow, removed 9 redundant places. [2024-11-09 02:51:08,717 INFO L231 Difference]: Finished difference. Result has 147 places, 261 transitions, 4608 flow [2024-11-09 02:51:08,717 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=3118, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=4608, PETRI_PLACES=147, PETRI_TRANSITIONS=261} [2024-11-09 02:51:08,718 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 127 predicate places. [2024-11-09 02:51:08,719 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 261 transitions, 4608 flow [2024-11-09 02:51:08,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 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 02:51:08,719 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:08,719 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:08,739 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 02:51:08,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 02:51:08,920 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:51:08,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:08,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1321107271, now seen corresponding path program 11 times [2024-11-09 02:51:08,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:08,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997330396] [2024-11-09 02:51:08,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:08,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:08,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:08,979 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:08,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:08,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997330396] [2024-11-09 02:51:08,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997330396] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:51:08,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347795436] [2024-11-09 02:51:08,980 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 02:51:08,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:08,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:51:08,982 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:51:08,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 02:51:09,022 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-09 02:51:09,022 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:51:09,022 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 02:51:09,023 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:51:09,090 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:09,091 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:51:09,146 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:09,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347795436] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:51:09,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:51:09,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2024-11-09 02:51:09,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189529635] [2024-11-09 02:51:09,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:51:09,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 02:51:09,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:09,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 02:51:09,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2024-11-09 02:51:09,148 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-09 02:51:09,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 261 transitions, 4608 flow. Second operand has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 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 02:51:09,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:09,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-09 02:51:09,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:09,405 INFO L124 PetriNetUnfolderBase]: 551/1079 cut-off events. [2024-11-09 02:51:09,406 INFO L125 PetriNetUnfolderBase]: For 17556/17556 co-relation queries the response was YES. [2024-11-09 02:51:09,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9150 conditions, 1079 events. 551/1079 cut-off events. For 17556/17556 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6095 event pairs, 6 based on Foata normal form. 4/1083 useless extension candidates. Maximal degree in co-relation 8780. Up to 610 conditions per place. [2024-11-09 02:51:09,445 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 228 selfloop transitions, 62 changer transitions 28/321 dead transitions. [2024-11-09 02:51:09,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 321 transitions, 6134 flow [2024-11-09 02:51:09,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 02:51:09,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-09 02:51:09,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 154 transitions. [2024-11-09 02:51:09,449 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5032679738562091 [2024-11-09 02:51:09,449 INFO L175 Difference]: Start difference. First operand has 147 places, 261 transitions, 4608 flow. Second operand 17 states and 154 transitions. [2024-11-09 02:51:09,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 321 transitions, 6134 flow [2024-11-09 02:51:09,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 321 transitions, 5664 flow, removed 232 selfloop flow, removed 2 redundant places. [2024-11-09 02:51:09,583 INFO L231 Difference]: Finished difference. Result has 163 places, 271 transitions, 4556 flow [2024-11-09 02:51:09,587 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=4204, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4556, PETRI_PLACES=163, PETRI_TRANSITIONS=271} [2024-11-09 02:51:09,588 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 143 predicate places. [2024-11-09 02:51:09,588 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 271 transitions, 4556 flow [2024-11-09 02:51:09,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 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 02:51:09,588 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:09,588 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:09,602 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-09 02:51:09,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-09 02:51:09,789 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:51:09,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:09,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1963286468, now seen corresponding path program 12 times [2024-11-09 02:51:09,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:09,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594909663] [2024-11-09 02:51:09,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:09,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:09,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:09,854 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:09,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:09,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594909663] [2024-11-09 02:51:09,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594909663] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:51:09,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208919752] [2024-11-09 02:51:09,855 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 02:51:09,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:09,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:51:09,857 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:51:09,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 02:51:09,896 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-09 02:51:09,896 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:51:09,897 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 02:51:09,898 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:51:09,990 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:09,991 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:51:10,101 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:10,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208919752] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:51:10,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:51:10,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2024-11-09 02:51:10,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913258269] [2024-11-09 02:51:10,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:51:10,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 02:51:10,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:10,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 02:51:10,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2024-11-09 02:51:10,102 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-09 02:51:10,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 271 transitions, 4556 flow. Second operand has 15 states, 15 states have (on average 7.2) internal successors, (108), 15 states have internal predecessors, (108), 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 02:51:10,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:10,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-09 02:51:10,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:10,497 INFO L124 PetriNetUnfolderBase]: 570/1141 cut-off events. [2024-11-09 02:51:10,497 INFO L125 PetriNetUnfolderBase]: For 12331/12331 co-relation queries the response was YES. [2024-11-09 02:51:10,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8741 conditions, 1141 events. 570/1141 cut-off events. For 12331/12331 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 6538 event pairs, 2 based on Foata normal form. 24/1165 useless extension candidates. Maximal degree in co-relation 8430. Up to 323 conditions per place. [2024-11-09 02:51:10,509 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 126 selfloop transitions, 221 changer transitions 2/352 dead transitions. [2024-11-09 02:51:10,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 352 transitions, 6265 flow [2024-11-09 02:51:10,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 02:51:10,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-09 02:51:10,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 157 transitions. [2024-11-09 02:51:10,511 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5451388888888888 [2024-11-09 02:51:10,511 INFO L175 Difference]: Start difference. First operand has 163 places, 271 transitions, 4556 flow. Second operand 16 states and 157 transitions. [2024-11-09 02:51:10,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 352 transitions, 6265 flow [2024-11-09 02:51:10,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 352 transitions, 6088 flow, removed 79 selfloop flow, removed 4 redundant places. [2024-11-09 02:51:10,564 INFO L231 Difference]: Finished difference. Result has 177 places, 312 transitions, 5966 flow [2024-11-09 02:51:10,565 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=4365, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=5966, PETRI_PLACES=177, PETRI_TRANSITIONS=312} [2024-11-09 02:51:10,565 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 157 predicate places. [2024-11-09 02:51:10,565 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 312 transitions, 5966 flow [2024-11-09 02:51:10,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.2) internal successors, (108), 15 states have internal predecessors, (108), 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 02:51:10,566 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:10,566 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:10,578 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-09 02:51:10,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-09 02:51:10,766 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:51:10,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:10,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1671206709, now seen corresponding path program 13 times [2024-11-09 02:51:10,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:10,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676198467] [2024-11-09 02:51:10,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:10,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:10,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:10,817 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:10,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:10,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676198467] [2024-11-09 02:51:10,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676198467] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:51:10,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479529726] [2024-11-09 02:51:10,818 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 02:51:10,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:10,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:51:10,821 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:51:10,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 02:51:10,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:10,864 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 02:51:10,865 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:51:10,919 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:10,919 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:51:10,982 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:10,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479529726] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:51:10,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:51:10,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2024-11-09 02:51:10,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559289294] [2024-11-09 02:51:10,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:51:10,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 02:51:10,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:10,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 02:51:10,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2024-11-09 02:51:10,984 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-09 02:51:10,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 312 transitions, 5966 flow. Second operand has 15 states, 15 states have (on average 7.2) internal successors, (108), 15 states have internal predecessors, (108), 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 02:51:10,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:10,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-09 02:51:10,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:11,282 INFO L124 PetriNetUnfolderBase]: 599/1191 cut-off events. [2024-11-09 02:51:11,283 INFO L125 PetriNetUnfolderBase]: For 17733/17733 co-relation queries the response was YES. [2024-11-09 02:51:11,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10337 conditions, 1191 events. 599/1191 cut-off events. For 17733/17733 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 6838 event pairs, 5 based on Foata normal form. 20/1211 useless extension candidates. Maximal degree in co-relation 9319. Up to 550 conditions per place. [2024-11-09 02:51:11,296 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 227 selfloop transitions, 129 changer transitions 19/378 dead transitions. [2024-11-09 02:51:11,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 378 transitions, 7825 flow [2024-11-09 02:51:11,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 02:51:11,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-09 02:51:11,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 156 transitions. [2024-11-09 02:51:11,297 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-11-09 02:51:11,297 INFO L175 Difference]: Start difference. First operand has 177 places, 312 transitions, 5966 flow. Second operand 16 states and 156 transitions. [2024-11-09 02:51:11,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 378 transitions, 7825 flow [2024-11-09 02:51:11,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 378 transitions, 7543 flow, removed 122 selfloop flow, removed 4 redundant places. [2024-11-09 02:51:11,420 INFO L231 Difference]: Finished difference. Result has 195 places, 331 transitions, 6788 flow [2024-11-09 02:51:11,421 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=5543, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=6788, PETRI_PLACES=195, PETRI_TRANSITIONS=331} [2024-11-09 02:51:11,421 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 175 predicate places. [2024-11-09 02:51:11,421 INFO L471 AbstractCegarLoop]: Abstraction has has 195 places, 331 transitions, 6788 flow [2024-11-09 02:51:11,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.2) internal successors, (108), 15 states have internal predecessors, (108), 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 02:51:11,421 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:11,421 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:11,436 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-09 02:51:11,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:11,625 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:51:11,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:11,626 INFO L85 PathProgramCache]: Analyzing trace with hash -969198971, now seen corresponding path program 14 times [2024-11-09 02:51:11,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:11,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463270285] [2024-11-09 02:51:11,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:11,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:11,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:11,746 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:51:11,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:11,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463270285] [2024-11-09 02:51:11,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463270285] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:51:11,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285169802] [2024-11-09 02:51:11,747 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:51:11,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:11,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:51:11,750 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:51:11,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 02:51:11,792 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:51:11,792 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:51:11,792 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 02:51:11,793 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:51:11,892 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:11,893 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:51:12,001 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:12,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285169802] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:51:12,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:51:12,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2024-11-09 02:51:12,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649644976] [2024-11-09 02:51:12,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:51:12,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 02:51:12,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:12,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 02:51:12,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2024-11-09 02:51:12,003 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-09 02:51:12,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 331 transitions, 6788 flow. Second operand has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 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 02:51:12,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:12,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-09 02:51:12,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:12,331 INFO L124 PetriNetUnfolderBase]: 558/1096 cut-off events. [2024-11-09 02:51:12,331 INFO L125 PetriNetUnfolderBase]: For 16730/16730 co-relation queries the response was YES. [2024-11-09 02:51:12,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9771 conditions, 1096 events. 558/1096 cut-off events. For 16730/16730 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 6050 event pairs, 4 based on Foata normal form. 14/1110 useless extension candidates. Maximal degree in co-relation 9678. Up to 550 conditions per place. [2024-11-09 02:51:12,341 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 222 selfloop transitions, 120 changer transitions 5/350 dead transitions. [2024-11-09 02:51:12,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 350 transitions, 7351 flow [2024-11-09 02:51:12,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 02:51:12,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-09 02:51:12,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 160 transitions. [2024-11-09 02:51:12,344 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5228758169934641 [2024-11-09 02:51:12,344 INFO L175 Difference]: Start difference. First operand has 195 places, 331 transitions, 6788 flow. Second operand 17 states and 160 transitions. [2024-11-09 02:51:12,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 350 transitions, 7351 flow [2024-11-09 02:51:12,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 350 transitions, 6883 flow, removed 222 selfloop flow, removed 5 redundant places. [2024-11-09 02:51:12,429 INFO L231 Difference]: Finished difference. Result has 205 places, 319 transitions, 6256 flow [2024-11-09 02:51:12,430 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=6095, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6256, PETRI_PLACES=205, PETRI_TRANSITIONS=319} [2024-11-09 02:51:12,430 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 185 predicate places. [2024-11-09 02:51:12,430 INFO L471 AbstractCegarLoop]: Abstraction has has 205 places, 319 transitions, 6256 flow [2024-11-09 02:51:12,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 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 02:51:12,431 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:12,431 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:12,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-09 02:51:12,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:12,632 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:51:12,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:12,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1536537335, now seen corresponding path program 15 times [2024-11-09 02:51:12,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:12,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150960459] [2024-11-09 02:51:12,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:12,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:12,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:12,689 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:12,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:12,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150960459] [2024-11-09 02:51:12,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150960459] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:51:12,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619689070] [2024-11-09 02:51:12,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:51:12,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:12,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:51:12,691 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:51:12,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 02:51:12,730 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 02:51:12,731 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:51:12,731 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 02:51:12,733 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:51:12,783 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 02:51:12,784 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 02:51:12,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619689070] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:51:12,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 02:51:12,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2024-11-09 02:51:12,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203144776] [2024-11-09 02:51:12,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:51:12,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 02:51:12,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:12,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 02:51:12,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-09 02:51:12,785 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-09 02:51:12,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 319 transitions, 6256 flow. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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 02:51:12,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:12,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-09 02:51:12,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:12,938 INFO L124 PetriNetUnfolderBase]: 552/1059 cut-off events. [2024-11-09 02:51:12,938 INFO L125 PetriNetUnfolderBase]: For 12770/12772 co-relation queries the response was YES. [2024-11-09 02:51:12,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9336 conditions, 1059 events. 552/1059 cut-off events. For 12770/12772 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5706 event pairs, 9 based on Foata normal form. 13/1072 useless extension candidates. Maximal degree in co-relation 9187. Up to 541 conditions per place. [2024-11-09 02:51:12,947 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 214 selfloop transitions, 24 changer transitions 99/340 dead transitions. [2024-11-09 02:51:12,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 340 transitions, 7236 flow [2024-11-09 02:51:12,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:51:12,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:51:12,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 56 transitions. [2024-11-09 02:51:12,948 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-11-09 02:51:12,948 INFO L175 Difference]: Start difference. First operand has 205 places, 319 transitions, 6256 flow. Second operand 6 states and 56 transitions. [2024-11-09 02:51:12,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 340 transitions, 7236 flow [2024-11-09 02:51:13,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 340 transitions, 7004 flow, removed 1 selfloop flow, removed 14 redundant places. [2024-11-09 02:51:13,011 INFO L231 Difference]: Finished difference. Result has 198 places, 235 transitions, 4433 flow [2024-11-09 02:51:13,012 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=6028, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4433, PETRI_PLACES=198, PETRI_TRANSITIONS=235} [2024-11-09 02:51:13,012 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 178 predicate places. [2024-11-09 02:51:13,012 INFO L471 AbstractCegarLoop]: Abstraction has has 198 places, 235 transitions, 4433 flow [2024-11-09 02:51:13,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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 02:51:13,012 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:13,012 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:13,025 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-09 02:51:13,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:13,213 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:51:13,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:13,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1782150499, now seen corresponding path program 16 times [2024-11-09 02:51:13,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:13,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217149009] [2024-11-09 02:51:13,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:13,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:13,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:13,255 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:13,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:13,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217149009] [2024-11-09 02:51:13,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217149009] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:51:13,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140936925] [2024-11-09 02:51:13,256 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 02:51:13,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:13,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:51:13,257 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:51:13,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-09 02:51:13,291 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 02:51:13,292 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:51:13,292 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 02:51:13,293 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:51:13,347 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:13,347 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:51:13,404 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:13,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140936925] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:51:13,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:51:13,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2024-11-09 02:51:13,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461286197] [2024-11-09 02:51:13,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:51:13,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 02:51:13,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:13,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 02:51:13,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2024-11-09 02:51:13,406 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-09 02:51:13,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 235 transitions, 4433 flow. Second operand has 15 states, 15 states have (on average 7.2) internal successors, (108), 15 states have internal predecessors, (108), 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 02:51:13,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:13,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-09 02:51:13,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:13,673 INFO L124 PetriNetUnfolderBase]: 444/822 cut-off events. [2024-11-09 02:51:13,673 INFO L125 PetriNetUnfolderBase]: For 9880/9880 co-relation queries the response was YES. [2024-11-09 02:51:13,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7094 conditions, 822 events. 444/822 cut-off events. For 9880/9880 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3925 event pairs, 3 based on Foata normal form. 12/830 useless extension candidates. Maximal degree in co-relation 6960. Up to 315 conditions per place. [2024-11-09 02:51:13,681 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 138 selfloop transitions, 147 changer transitions 4/292 dead transitions. [2024-11-09 02:51:13,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 292 transitions, 5581 flow [2024-11-09 02:51:13,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 02:51:13,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-09 02:51:13,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 130 transitions. [2024-11-09 02:51:13,682 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5158730158730159 [2024-11-09 02:51:13,682 INFO L175 Difference]: Start difference. First operand has 198 places, 235 transitions, 4433 flow. Second operand 14 states and 130 transitions. [2024-11-09 02:51:13,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 292 transitions, 5581 flow [2024-11-09 02:51:13,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 292 transitions, 5305 flow, removed 59 selfloop flow, removed 13 redundant places. [2024-11-09 02:51:13,724 INFO L231 Difference]: Finished difference. Result has 185 places, 267 transitions, 4956 flow [2024-11-09 02:51:13,724 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=4168, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4956, PETRI_PLACES=185, PETRI_TRANSITIONS=267} [2024-11-09 02:51:13,725 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 165 predicate places. [2024-11-09 02:51:13,725 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 267 transitions, 4956 flow [2024-11-09 02:51:13,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.2) internal successors, (108), 15 states have internal predecessors, (108), 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 02:51:13,725 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:13,725 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:13,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-09 02:51:13,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:13,928 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:51:13,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:13,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1776840379, now seen corresponding path program 17 times [2024-11-09 02:51:13,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:13,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492790915] [2024-11-09 02:51:13,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:13,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:13,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:13,963 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:13,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:13,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492790915] [2024-11-09 02:51:13,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492790915] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:51:13,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858190343] [2024-11-09 02:51:13,963 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 02:51:13,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:13,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:51:13,965 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:51:13,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-09 02:51:13,997 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-09 02:51:13,997 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:51:13,998 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 02:51:13,999 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:51:14,053 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:14,054 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:51:14,117 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:14,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858190343] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:51:14,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:51:14,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2024-11-09 02:51:14,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805148938] [2024-11-09 02:51:14,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:51:14,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 02:51:14,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:14,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 02:51:14,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2024-11-09 02:51:14,119 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-09 02:51:14,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 267 transitions, 4956 flow. Second operand has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 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 02:51:14,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:14,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-09 02:51:14,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:14,369 INFO L124 PetriNetUnfolderBase]: 474/892 cut-off events. [2024-11-09 02:51:14,369 INFO L125 PetriNetUnfolderBase]: For 10438/10438 co-relation queries the response was YES. [2024-11-09 02:51:14,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7814 conditions, 892 events. 474/892 cut-off events. For 10438/10438 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4428 event pairs, 4 based on Foata normal form. 5/895 useless extension candidates. Maximal degree in co-relation 7418. Up to 331 conditions per place. [2024-11-09 02:51:14,377 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 128 selfloop transitions, 184 changer transitions 6/321 dead transitions. [2024-11-09 02:51:14,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 321 transitions, 6332 flow [2024-11-09 02:51:14,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 02:51:14,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-09 02:51:14,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 143 transitions. [2024-11-09 02:51:14,378 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5296296296296297 [2024-11-09 02:51:14,378 INFO L175 Difference]: Start difference. First operand has 185 places, 267 transitions, 4956 flow. Second operand 15 states and 143 transitions. [2024-11-09 02:51:14,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 321 transitions, 6332 flow [2024-11-09 02:51:14,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 321 transitions, 6195 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-11-09 02:51:14,424 INFO L231 Difference]: Finished difference. Result has 197 places, 284 transitions, 5939 flow [2024-11-09 02:51:14,424 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=4826, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=5939, PETRI_PLACES=197, PETRI_TRANSITIONS=284} [2024-11-09 02:51:14,424 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 177 predicate places. [2024-11-09 02:51:14,425 INFO L471 AbstractCegarLoop]: Abstraction has has 197 places, 284 transitions, 5939 flow [2024-11-09 02:51:14,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 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 02:51:14,425 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:14,425 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:14,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-09 02:51:14,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:14,630 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:51:14,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:14,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1530199125, now seen corresponding path program 18 times [2024-11-09 02:51:14,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:14,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415763038] [2024-11-09 02:51:14,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:14,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:14,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:14,768 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:14,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:14,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415763038] [2024-11-09 02:51:14,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415763038] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:51:14,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766400384] [2024-11-09 02:51:14,769 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 02:51:14,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:14,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:51:14,771 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:51:14,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-09 02:51:14,817 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-09 02:51:14,817 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:51:14,818 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 02:51:14,819 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:51:14,909 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:14,909 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:51:14,955 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:51:14,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766400384] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:51:14,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:51:14,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 5] total 19 [2024-11-09 02:51:14,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876381778] [2024-11-09 02:51:14,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:51:14,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 02:51:14,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:14,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 02:51:14,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2024-11-09 02:51:14,956 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-09 02:51:14,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 284 transitions, 5939 flow. Second operand has 20 states, 20 states have (on average 7.2) internal successors, (144), 20 states have internal predecessors, (144), 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 02:51:14,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:14,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-09 02:51:14,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:15,245 INFO L124 PetriNetUnfolderBase]: 569/1065 cut-off events. [2024-11-09 02:51:15,245 INFO L125 PetriNetUnfolderBase]: For 15335/15335 co-relation queries the response was YES. [2024-11-09 02:51:15,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10026 conditions, 1065 events. 569/1065 cut-off events. For 15335/15335 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 5545 event pairs, 9 based on Foata normal form. 31/1096 useless extension candidates. Maximal degree in co-relation 9617. Up to 670 conditions per place. [2024-11-09 02:51:15,254 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 236 selfloop transitions, 113 changer transitions 21/373 dead transitions. [2024-11-09 02:51:15,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 373 transitions, 8086 flow [2024-11-09 02:51:15,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 02:51:15,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-09 02:51:15,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 144 transitions. [2024-11-09 02:51:15,255 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6153846153846154 [2024-11-09 02:51:15,255 INFO L175 Difference]: Start difference. First operand has 197 places, 284 transitions, 5939 flow. Second operand 13 states and 144 transitions. [2024-11-09 02:51:15,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 373 transitions, 8086 flow [2024-11-09 02:51:15,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 373 transitions, 7884 flow, removed 89 selfloop flow, removed 4 redundant places. [2024-11-09 02:51:15,336 INFO L231 Difference]: Finished difference. Result has 213 places, 333 transitions, 7068 flow [2024-11-09 02:51:15,336 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=5757, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7068, PETRI_PLACES=213, PETRI_TRANSITIONS=333} [2024-11-09 02:51:15,336 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 193 predicate places. [2024-11-09 02:51:15,337 INFO L471 AbstractCegarLoop]: Abstraction has has 213 places, 333 transitions, 7068 flow [2024-11-09 02:51:15,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.2) internal successors, (144), 20 states have internal predecessors, (144), 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 02:51:15,337 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:15,337 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:15,354 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-09 02:51:15,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:15,537 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:51:15,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:15,538 INFO L85 PathProgramCache]: Analyzing trace with hash 577034413, now seen corresponding path program 19 times [2024-11-09 02:51:15,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:15,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039940590] [2024-11-09 02:51:15,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:15,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:15,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:15,614 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:15,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:15,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039940590] [2024-11-09 02:51:15,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039940590] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:51:15,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023285767] [2024-11-09 02:51:15,615 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 02:51:15,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:15,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:51:15,619 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:51:15,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-09 02:51:15,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:15,659 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 02:51:15,660 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:51:15,755 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:15,756 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:51:15,777 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:51:15,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023285767] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:51:15,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:51:15,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 5] total 13 [2024-11-09 02:51:15,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456788241] [2024-11-09 02:51:15,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:51:15,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 02:51:15,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:15,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 02:51:15,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-11-09 02:51:15,779 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-09 02:51:15,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 333 transitions, 7068 flow. Second operand has 14 states, 14 states have (on average 7.5) internal successors, (105), 14 states have internal predecessors, (105), 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 02:51:15,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:15,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-09 02:51:15,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:16,179 INFO L124 PetriNetUnfolderBase]: 739/1383 cut-off events. [2024-11-09 02:51:16,179 INFO L125 PetriNetUnfolderBase]: For 23674/23674 co-relation queries the response was YES. [2024-11-09 02:51:16,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13664 conditions, 1383 events. 739/1383 cut-off events. For 23674/23674 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 7653 event pairs, 9 based on Foata normal form. 13/1396 useless extension candidates. Maximal degree in co-relation 13186. Up to 841 conditions per place. [2024-11-09 02:51:16,193 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 284 selfloop transitions, 154 changer transitions 25/466 dead transitions. [2024-11-09 02:51:16,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 466 transitions, 10579 flow [2024-11-09 02:51:16,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 02:51:16,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-09 02:51:16,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 153 transitions. [2024-11-09 02:51:16,194 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2024-11-09 02:51:16,194 INFO L175 Difference]: Start difference. First operand has 213 places, 333 transitions, 7068 flow. Second operand 14 states and 153 transitions. [2024-11-09 02:51:16,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 466 transitions, 10579 flow [2024-11-09 02:51:16,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 466 transitions, 10445 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-11-09 02:51:16,298 INFO L231 Difference]: Finished difference. Result has 231 places, 402 transitions, 9002 flow [2024-11-09 02:51:16,298 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=6938, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=9002, PETRI_PLACES=231, PETRI_TRANSITIONS=402} [2024-11-09 02:51:16,299 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 211 predicate places. [2024-11-09 02:51:16,299 INFO L471 AbstractCegarLoop]: Abstraction has has 231 places, 402 transitions, 9002 flow [2024-11-09 02:51:16,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.5) internal successors, (105), 14 states have internal predecessors, (105), 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 02:51:16,299 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:16,299 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:16,312 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-09 02:51:16,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-09 02:51:16,504 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:51:16,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:16,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1578356599, now seen corresponding path program 20 times [2024-11-09 02:51:16,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:16,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859596483] [2024-11-09 02:51:16,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:16,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:16,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:16,576 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:16,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:16,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859596483] [2024-11-09 02:51:16,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859596483] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:51:16,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472013490] [2024-11-09 02:51:16,577 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:51:16,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:16,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:51:16,578 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:51:16,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-09 02:51:16,615 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:51:16,615 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:51:16,616 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 02:51:16,617 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:51:16,708 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:16,708 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:51:16,755 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:51:16,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472013490] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:51:16,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:51:16,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 5] total 18 [2024-11-09 02:51:16,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651194171] [2024-11-09 02:51:16,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:51:16,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 02:51:16,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:16,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 02:51:16,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2024-11-09 02:51:16,756 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-09 02:51:16,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 402 transitions, 9002 flow. Second operand has 19 states, 19 states have (on average 7.368421052631579) internal successors, (140), 19 states have internal predecessors, (140), 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 02:51:16,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:16,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-09 02:51:16,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:17,187 INFO L124 PetriNetUnfolderBase]: 880/1636 cut-off events. [2024-11-09 02:51:17,187 INFO L125 PetriNetUnfolderBase]: For 50743/50743 co-relation queries the response was YES. [2024-11-09 02:51:17,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17795 conditions, 1636 events. 880/1636 cut-off events. For 50743/50743 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 9288 event pairs, 9 based on Foata normal form. 47/1683 useless extension candidates. Maximal degree in co-relation 17434. Up to 944 conditions per place. [2024-11-09 02:51:17,203 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 307 selfloop transitions, 189 changer transitions 35/534 dead transitions. [2024-11-09 02:51:17,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 534 transitions, 13044 flow [2024-11-09 02:51:17,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 02:51:17,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-09 02:51:17,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 183 transitions. [2024-11-09 02:51:17,205 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5980392156862745 [2024-11-09 02:51:17,205 INFO L175 Difference]: Start difference. First operand has 231 places, 402 transitions, 9002 flow. Second operand 17 states and 183 transitions. [2024-11-09 02:51:17,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 534 transitions, 13044 flow [2024-11-09 02:51:17,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 534 transitions, 12478 flow, removed 239 selfloop flow, removed 5 redundant places. [2024-11-09 02:51:17,398 INFO L231 Difference]: Finished difference. Result has 252 places, 466 transitions, 10573 flow [2024-11-09 02:51:17,398 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=8374, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=10573, PETRI_PLACES=252, PETRI_TRANSITIONS=466} [2024-11-09 02:51:17,399 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 232 predicate places. [2024-11-09 02:51:17,399 INFO L471 AbstractCegarLoop]: Abstraction has has 252 places, 466 transitions, 10573 flow [2024-11-09 02:51:17,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.368421052631579) internal successors, (140), 19 states have internal predecessors, (140), 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 02:51:17,405 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:17,405 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:17,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-09 02:51:17,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-09 02:51:17,606 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:51:17,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:17,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1669566385, now seen corresponding path program 21 times [2024-11-09 02:51:17,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:17,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337552001] [2024-11-09 02:51:17,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:17,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:17,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:17,717 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:17,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:17,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337552001] [2024-11-09 02:51:17,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337552001] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:51:17,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885007973] [2024-11-09 02:51:17,717 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:51:17,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:17,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:51:17,721 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:51:17,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-09 02:51:17,754 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 02:51:17,754 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:51:17,755 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 02:51:17,755 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:51:17,795 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 02:51:17,796 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 02:51:17,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885007973] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:51:17,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 02:51:17,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 14 [2024-11-09 02:51:17,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278366125] [2024-11-09 02:51:17,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:51:17,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 02:51:17,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:17,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 02:51:17,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2024-11-09 02:51:17,797 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-09 02:51:17,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 466 transitions, 10573 flow. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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 02:51:17,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:17,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-09 02:51:17,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:18,121 INFO L124 PetriNetUnfolderBase]: 860/1714 cut-off events. [2024-11-09 02:51:18,122 INFO L125 PetriNetUnfolderBase]: For 64280/64282 co-relation queries the response was YES. [2024-11-09 02:51:18,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18928 conditions, 1714 events. 860/1714 cut-off events. For 64280/64282 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 10540 event pairs, 12 based on Foata normal form. 18/1732 useless extension candidates. Maximal degree in co-relation 18116. Up to 1194 conditions per place. [2024-11-09 02:51:18,140 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 452 selfloop transitions, 29 changer transitions 26/510 dead transitions. [2024-11-09 02:51:18,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 510 transitions, 12455 flow [2024-11-09 02:51:18,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:51:18,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:51:18,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 60 transitions. [2024-11-09 02:51:18,141 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-11-09 02:51:18,141 INFO L175 Difference]: Start difference. First operand has 252 places, 466 transitions, 10573 flow. Second operand 6 states and 60 transitions. [2024-11-09 02:51:18,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 510 transitions, 12455 flow [2024-11-09 02:51:18,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 510 transitions, 11727 flow, removed 264 selfloop flow, removed 5 redundant places. [2024-11-09 02:51:18,383 INFO L231 Difference]: Finished difference. Result has 252 places, 460 transitions, 9896 flow [2024-11-09 02:51:18,383 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=9876, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=9896, PETRI_PLACES=252, PETRI_TRANSITIONS=460} [2024-11-09 02:51:18,384 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 232 predicate places. [2024-11-09 02:51:18,384 INFO L471 AbstractCegarLoop]: Abstraction has has 252 places, 460 transitions, 9896 flow [2024-11-09 02:51:18,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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 02:51:18,384 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:18,384 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:18,396 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-09 02:51:18,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-09 02:51:18,585 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:51:18,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:18,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1590918145, now seen corresponding path program 22 times [2024-11-09 02:51:18,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:18,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814140461] [2024-11-09 02:51:18,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:18,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:18,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:18,703 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:18,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:18,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814140461] [2024-11-09 02:51:18,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814140461] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:51:18,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122039444] [2024-11-09 02:51:18,703 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 02:51:18,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:18,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:51:18,705 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:51:18,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-09 02:51:18,741 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 02:51:18,741 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:51:18,742 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 02:51:18,742 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:51:18,828 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:18,828 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:51:18,872 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:51:18,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122039444] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:51:18,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:51:18,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 5] total 19 [2024-11-09 02:51:18,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621400910] [2024-11-09 02:51:18,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:51:18,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 02:51:18,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:18,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 02:51:18,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2024-11-09 02:51:18,874 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-09 02:51:18,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 460 transitions, 9896 flow. Second operand has 20 states, 20 states have (on average 7.2) internal successors, (144), 20 states have internal predecessors, (144), 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 02:51:18,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:18,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-09 02:51:18,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:19,251 INFO L124 PetriNetUnfolderBase]: 872/1634 cut-off events. [2024-11-09 02:51:19,251 INFO L125 PetriNetUnfolderBase]: For 40543/40543 co-relation queries the response was YES. [2024-11-09 02:51:19,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16614 conditions, 1634 events. 872/1634 cut-off events. For 40543/40543 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 9317 event pairs, 26 based on Foata normal form. 1/1635 useless extension candidates. Maximal degree in co-relation 16371. Up to 1335 conditions per place. [2024-11-09 02:51:19,268 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 417 selfloop transitions, 99 changer transitions 5/524 dead transitions. [2024-11-09 02:51:19,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 524 transitions, 12045 flow [2024-11-09 02:51:19,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 02:51:19,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-09 02:51:19,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 118 transitions. [2024-11-09 02:51:19,269 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5042735042735043 [2024-11-09 02:51:19,269 INFO L175 Difference]: Start difference. First operand has 252 places, 460 transitions, 9896 flow. Second operand 13 states and 118 transitions. [2024-11-09 02:51:19,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 524 transitions, 12045 flow [2024-11-09 02:51:19,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 524 transitions, 11644 flow, removed 62 selfloop flow, removed 9 redundant places. [2024-11-09 02:51:19,479 INFO L231 Difference]: Finished difference. Result has 253 places, 503 transitions, 10625 flow [2024-11-09 02:51:19,480 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=9564, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10625, PETRI_PLACES=253, PETRI_TRANSITIONS=503} [2024-11-09 02:51:19,480 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 233 predicate places. [2024-11-09 02:51:19,480 INFO L471 AbstractCegarLoop]: Abstraction has has 253 places, 503 transitions, 10625 flow [2024-11-09 02:51:19,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.2) internal successors, (144), 20 states have internal predecessors, (144), 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 02:51:19,480 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:19,481 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:19,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-09 02:51:19,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:19,682 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:51:19,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:19,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1402585103, now seen corresponding path program 23 times [2024-11-09 02:51:19,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:19,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462129880] [2024-11-09 02:51:19,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:19,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:19,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:19,729 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:19,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:19,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462129880] [2024-11-09 02:51:19,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462129880] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:51:19,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041569686] [2024-11-09 02:51:19,730 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 02:51:19,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:19,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:51:19,731 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:51:19,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-09 02:51:19,764 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-09 02:51:19,764 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:51:19,765 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 02:51:19,765 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:51:19,844 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:19,845 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:51:19,958 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:19,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041569686] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:51:19,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:51:19,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 20 [2024-11-09 02:51:19,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761633481] [2024-11-09 02:51:19,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:51:19,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 02:51:19,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:19,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 02:51:19,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=276, Unknown=0, NotChecked=0, Total=420 [2024-11-09 02:51:19,961 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-09 02:51:19,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 503 transitions, 10625 flow. Second operand has 21 states, 21 states have (on average 6.9523809523809526) internal successors, (146), 21 states have internal predecessors, (146), 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 02:51:19,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:19,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-09 02:51:19,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:20,540 INFO L124 PetriNetUnfolderBase]: 913/1733 cut-off events. [2024-11-09 02:51:20,541 INFO L125 PetriNetUnfolderBase]: For 47294/47294 co-relation queries the response was YES. [2024-11-09 02:51:20,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17695 conditions, 1733 events. 913/1733 cut-off events. For 47294/47294 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 10145 event pairs, 3 based on Foata normal form. 6/1739 useless extension candidates. Maximal degree in co-relation 17102. Up to 661 conditions per place. [2024-11-09 02:51:20,558 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 170 selfloop transitions, 406 changer transitions 3/582 dead transitions. [2024-11-09 02:51:20,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 582 transitions, 13153 flow [2024-11-09 02:51:20,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-09 02:51:20,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-09 02:51:20,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 203 transitions. [2024-11-09 02:51:20,562 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5126262626262627 [2024-11-09 02:51:20,562 INFO L175 Difference]: Start difference. First operand has 253 places, 503 transitions, 10625 flow. Second operand 22 states and 203 transitions. [2024-11-09 02:51:20,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 582 transitions, 13153 flow [2024-11-09 02:51:20,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 582 transitions, 13057 flow, removed 28 selfloop flow, removed 2 redundant places. [2024-11-09 02:51:20,754 INFO L231 Difference]: Finished difference. Result has 278 places, 532 transitions, 12997 flow [2024-11-09 02:51:20,755 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=10529, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=381, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=12997, PETRI_PLACES=278, PETRI_TRANSITIONS=532} [2024-11-09 02:51:20,755 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 258 predicate places. [2024-11-09 02:51:20,755 INFO L471 AbstractCegarLoop]: Abstraction has has 278 places, 532 transitions, 12997 flow [2024-11-09 02:51:20,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.9523809523809526) internal successors, (146), 21 states have internal predecessors, (146), 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 02:51:20,756 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:20,756 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:20,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-09 02:51:20,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-09 02:51:20,956 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:51:20,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:20,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1132830418, now seen corresponding path program 24 times [2024-11-09 02:51:20,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:20,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645470567] [2024-11-09 02:51:20,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:20,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:20,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:21,021 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:51:21,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:21,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645470567] [2024-11-09 02:51:21,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645470567] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:51:21,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226066674] [2024-11-09 02:51:21,022 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 02:51:21,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:21,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:51:21,024 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:51:21,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-09 02:51:21,057 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-09 02:51:21,058 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:51:21,058 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 02:51:21,059 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:51:21,138 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:21,139 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:51:21,228 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:21,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226066674] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:51:21,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:51:21,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 20 [2024-11-09 02:51:21,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286492267] [2024-11-09 02:51:21,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:51:21,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 02:51:21,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:21,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 02:51:21,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2024-11-09 02:51:21,231 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-09 02:51:21,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 532 transitions, 12997 flow. Second operand has 21 states, 21 states have (on average 6.9523809523809526) internal successors, (146), 21 states have internal predecessors, (146), 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 02:51:21,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:21,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-09 02:51:21,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:22,010 INFO L124 PetriNetUnfolderBase]: 1104/2042 cut-off events. [2024-11-09 02:51:22,010 INFO L125 PetriNetUnfolderBase]: For 82063/82063 co-relation queries the response was YES. [2024-11-09 02:51:22,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24146 conditions, 2042 events. 1104/2042 cut-off events. For 82063/82063 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 11925 event pairs, 22 based on Foata normal form. 21/2063 useless extension candidates. Maximal degree in co-relation 23394. Up to 793 conditions per place. [2024-11-09 02:51:22,036 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 329 selfloop transitions, 349 changer transitions 30/711 dead transitions. [2024-11-09 02:51:22,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 711 transitions, 18725 flow [2024-11-09 02:51:22,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-09 02:51:22,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-09 02:51:22,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 236 transitions. [2024-11-09 02:51:22,037 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5042735042735043 [2024-11-09 02:51:22,037 INFO L175 Difference]: Start difference. First operand has 278 places, 532 transitions, 12997 flow. Second operand 26 states and 236 transitions. [2024-11-09 02:51:22,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 711 transitions, 18725 flow [2024-11-09 02:51:22,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 711 transitions, 17801 flow, removed 456 selfloop flow, removed 4 redundant places. [2024-11-09 02:51:22,606 INFO L231 Difference]: Finished difference. Result has 305 places, 629 transitions, 15920 flow [2024-11-09 02:51:22,607 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=12571, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=255, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=15920, PETRI_PLACES=305, PETRI_TRANSITIONS=629} [2024-11-09 02:51:22,608 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 285 predicate places. [2024-11-09 02:51:22,608 INFO L471 AbstractCegarLoop]: Abstraction has has 305 places, 629 transitions, 15920 flow [2024-11-09 02:51:22,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.9523809523809526) internal successors, (146), 21 states have internal predecessors, (146), 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 02:51:22,608 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:22,608 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:22,620 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-09 02:51:22,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-09 02:51:22,809 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:51:22,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:22,809 INFO L85 PathProgramCache]: Analyzing trace with hash -949132521, now seen corresponding path program 25 times [2024-11-09 02:51:22,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:22,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469680032] [2024-11-09 02:51:22,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:22,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:22,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:22,860 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:22,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:22,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469680032] [2024-11-09 02:51:22,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469680032] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:51:22,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214457940] [2024-11-09 02:51:22,860 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 02:51:22,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:22,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:51:22,863 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:51:22,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-09 02:51:22,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:22,905 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 02:51:22,905 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:51:23,044 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:23,044 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:51:23,200 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:23,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214457940] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:51:23,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:51:23,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 19 [2024-11-09 02:51:23,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044842661] [2024-11-09 02:51:23,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:51:23,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 02:51:23,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:23,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 02:51:23,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2024-11-09 02:51:23,202 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-09 02:51:23,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 629 transitions, 15920 flow. Second operand has 20 states, 20 states have (on average 6.95) internal successors, (139), 20 states have internal predecessors, (139), 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 02:51:23,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:23,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-09 02:51:23,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:24,033 INFO L124 PetriNetUnfolderBase]: 1084/2006 cut-off events. [2024-11-09 02:51:24,033 INFO L125 PetriNetUnfolderBase]: For 49872/49872 co-relation queries the response was YES. [2024-11-09 02:51:24,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22420 conditions, 2006 events. 1084/2006 cut-off events. For 49872/49872 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 11610 event pairs, 2 based on Foata normal form. 8/2014 useless extension candidates. Maximal degree in co-relation 21705. Up to 829 conditions per place. [2024-11-09 02:51:24,057 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 277 selfloop transitions, 410 changer transitions 3/693 dead transitions. [2024-11-09 02:51:24,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 693 transitions, 18165 flow [2024-11-09 02:51:24,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 02:51:24,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-09 02:51:24,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 187 transitions. [2024-11-09 02:51:24,058 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4947089947089947 [2024-11-09 02:51:24,058 INFO L175 Difference]: Start difference. First operand has 305 places, 629 transitions, 15920 flow. Second operand 21 states and 187 transitions. [2024-11-09 02:51:24,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 693 transitions, 18165 flow [2024-11-09 02:51:24,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 693 transitions, 16947 flow, removed 557 selfloop flow, removed 9 redundant places. [2024-11-09 02:51:24,452 INFO L231 Difference]: Finished difference. Result has 322 places, 652 transitions, 16907 flow [2024-11-09 02:51:24,452 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=14750, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=388, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=16907, PETRI_PLACES=322, PETRI_TRANSITIONS=652} [2024-11-09 02:51:24,453 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 302 predicate places. [2024-11-09 02:51:24,453 INFO L471 AbstractCegarLoop]: Abstraction has has 322 places, 652 transitions, 16907 flow [2024-11-09 02:51:24,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.95) internal successors, (139), 20 states have internal predecessors, (139), 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 02:51:24,453 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:24,453 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:24,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-09 02:51:24,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:24,654 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:51:24,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:24,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1249310868, now seen corresponding path program 26 times [2024-11-09 02:51:24,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:24,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751153122] [2024-11-09 02:51:24,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:24,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:24,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:24,714 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:51:24,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:24,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751153122] [2024-11-09 02:51:24,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751153122] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:51:24,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700553302] [2024-11-09 02:51:24,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:51:24,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:24,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:51:24,716 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:51:24,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-09 02:51:24,752 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:51:24,752 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:51:24,753 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 02:51:24,753 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:51:24,830 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:24,830 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:51:24,913 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:24,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700553302] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:51:24,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:51:24,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 20 [2024-11-09 02:51:24,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908005351] [2024-11-09 02:51:24,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:51:24,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 02:51:24,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:24,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 02:51:24,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=283, Unknown=0, NotChecked=0, Total=420 [2024-11-09 02:51:24,915 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-09 02:51:24,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 652 transitions, 16907 flow. Second operand has 21 states, 21 states have (on average 6.9523809523809526) internal successors, (146), 21 states have internal predecessors, (146), 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 02:51:24,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:24,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-09 02:51:24,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:25,603 INFO L124 PetriNetUnfolderBase]: 1157/2124 cut-off events. [2024-11-09 02:51:25,604 INFO L125 PetriNetUnfolderBase]: For 39342/39342 co-relation queries the response was YES. [2024-11-09 02:51:25,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24208 conditions, 2124 events. 1157/2124 cut-off events. For 39342/39342 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 12304 event pairs, 28 based on Foata normal form. 12/2132 useless extension candidates. Maximal degree in co-relation 23730. Up to 795 conditions per place. [2024-11-09 02:51:25,631 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 261 selfloop transitions, 473 changer transitions 10/747 dead transitions. [2024-11-09 02:51:25,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 747 transitions, 20557 flow [2024-11-09 02:51:25,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-09 02:51:25,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-09 02:51:25,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 208 transitions. [2024-11-09 02:51:25,632 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5024154589371981 [2024-11-09 02:51:25,633 INFO L175 Difference]: Start difference. First operand has 322 places, 652 transitions, 16907 flow. Second operand 23 states and 208 transitions. [2024-11-09 02:51:25,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 747 transitions, 20557 flow [2024-11-09 02:51:26,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 747 transitions, 19992 flow, removed 95 selfloop flow, removed 13 redundant places. [2024-11-09 02:51:26,065 INFO L231 Difference]: Finished difference. Result has 333 places, 696 transitions, 18978 flow [2024-11-09 02:51:26,066 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=16388, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=430, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=18978, PETRI_PLACES=333, PETRI_TRANSITIONS=696} [2024-11-09 02:51:26,066 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 313 predicate places. [2024-11-09 02:51:26,067 INFO L471 AbstractCegarLoop]: Abstraction has has 333 places, 696 transitions, 18978 flow [2024-11-09 02:51:26,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.9523809523809526) internal successors, (146), 21 states have internal predecessors, (146), 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 02:51:26,067 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:26,067 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:26,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-09 02:51:26,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:26,271 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:51:26,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:26,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1306509124, now seen corresponding path program 27 times [2024-11-09 02:51:26,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:26,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235703096] [2024-11-09 02:51:26,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:26,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:26,353 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:26,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:26,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235703096] [2024-11-09 02:51:26,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235703096] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:51:26,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169426702] [2024-11-09 02:51:26,356 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:51:26,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:26,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:51:26,358 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:51:26,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-09 02:51:26,425 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 02:51:26,425 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:51:26,426 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 02:51:26,426 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:51:26,485 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 02:51:26,485 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 02:51:26,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169426702] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:51:26,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 02:51:26,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2024-11-09 02:51:26,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948262781] [2024-11-09 02:51:26,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:51:26,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 02:51:26,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:26,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 02:51:26,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-11-09 02:51:26,486 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-09 02:51:26,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 696 transitions, 18978 flow. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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 02:51:26,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:26,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-09 02:51:26,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:27,344 INFO L124 PetriNetUnfolderBase]: 1184/2124 cut-off events. [2024-11-09 02:51:27,345 INFO L125 PetriNetUnfolderBase]: For 36560/36560 co-relation queries the response was YES. [2024-11-09 02:51:27,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24878 conditions, 2124 events. 1184/2124 cut-off events. For 36560/36560 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 12227 event pairs, 6 based on Foata normal form. 26/2148 useless extension candidates. Maximal degree in co-relation 24566. Up to 1651 conditions per place. [2024-11-09 02:51:27,366 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 39 selfloop transitions, 5 changer transitions 685/732 dead transitions. [2024-11-09 02:51:27,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 732 transitions, 21141 flow [2024-11-09 02:51:27,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:51:27,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:51:27,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 61 transitions. [2024-11-09 02:51:27,368 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5648148148148148 [2024-11-09 02:51:27,368 INFO L175 Difference]: Start difference. First operand has 333 places, 696 transitions, 18978 flow. Second operand 6 states and 61 transitions. [2024-11-09 02:51:27,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 732 transitions, 21141 flow [2024-11-09 02:51:27,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 732 transitions, 20524 flow, removed 265 selfloop flow, removed 11 redundant places. [2024-11-09 02:51:27,794 INFO L231 Difference]: Finished difference. Result has 326 places, 39 transitions, 884 flow [2024-11-09 02:51:27,795 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=18337, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=692, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=687, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=884, PETRI_PLACES=326, PETRI_TRANSITIONS=39} [2024-11-09 02:51:27,796 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 306 predicate places. [2024-11-09 02:51:27,796 INFO L471 AbstractCegarLoop]: Abstraction has has 326 places, 39 transitions, 884 flow [2024-11-09 02:51:27,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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 02:51:27,796 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:27,796 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:27,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-09 02:51:27,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:27,997 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:51:27,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:27,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1725715314, now seen corresponding path program 28 times [2024-11-09 02:51:27,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:27,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057123381] [2024-11-09 02:51:27,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:27,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:28,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:28,047 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:28,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:28,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057123381] [2024-11-09 02:51:28,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057123381] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:51:28,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340262561] [2024-11-09 02:51:28,047 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 02:51:28,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:28,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:51:28,049 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:51:28,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-09 02:51:28,086 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 02:51:28,086 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:51:28,087 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 02:51:28,087 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:51:28,157 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:28,157 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:51:28,255 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:28,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340262561] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:51:28,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:51:28,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 20 [2024-11-09 02:51:28,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650623513] [2024-11-09 02:51:28,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:51:28,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 02:51:28,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:28,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 02:51:28,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=276, Unknown=0, NotChecked=0, Total=420 [2024-11-09 02:51:28,257 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-09 02:51:28,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 39 transitions, 884 flow. Second operand has 21 states, 21 states have (on average 6.9523809523809526) internal successors, (146), 21 states have internal predecessors, (146), 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 02:51:28,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:28,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-09 02:51:28,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:28,385 INFO L124 PetriNetUnfolderBase]: 47/125 cut-off events. [2024-11-09 02:51:28,385 INFO L125 PetriNetUnfolderBase]: For 8169/8169 co-relation queries the response was YES. [2024-11-09 02:51:28,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1489 conditions, 125 events. 47/125 cut-off events. For 8169/8169 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 323 event pairs, 1 based on Foata normal form. 3/128 useless extension candidates. Maximal degree in co-relation 1389. Up to 28 conditions per place. [2024-11-09 02:51:28,387 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 34 selfloop transitions, 14 changer transitions 8/59 dead transitions. [2024-11-09 02:51:28,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 59 transitions, 1147 flow [2024-11-09 02:51:28,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 02:51:28,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-09 02:51:28,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 113 transitions. [2024-11-09 02:51:28,388 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4829059829059829 [2024-11-09 02:51:28,388 INFO L175 Difference]: Start difference. First operand has 326 places, 39 transitions, 884 flow. Second operand 13 states and 113 transitions. [2024-11-09 02:51:28,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 59 transitions, 1147 flow [2024-11-09 02:51:28,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 59 transitions, 491 flow, removed 138 selfloop flow, removed 138 redundant places. [2024-11-09 02:51:28,399 INFO L231 Difference]: Finished difference. Result has 104 places, 35 transitions, 303 flow [2024-11-09 02:51:28,399 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=303, PETRI_PLACES=104, PETRI_TRANSITIONS=35} [2024-11-09 02:51:28,399 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 84 predicate places. [2024-11-09 02:51:28,399 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 35 transitions, 303 flow [2024-11-09 02:51:28,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.9523809523809526) internal successors, (146), 21 states have internal predecessors, (146), 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 02:51:28,400 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:28,400 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:28,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-11-09 02:51:28,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:28,600 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:51:28,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:28,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1385787660, now seen corresponding path program 29 times [2024-11-09 02:51:28,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:28,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109340056] [2024-11-09 02:51:28,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:28,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:28,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:28,721 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:28,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:28,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109340056] [2024-11-09 02:51:28,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109340056] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:51:28,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92299416] [2024-11-09 02:51:28,722 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 02:51:28,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:28,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:51:28,724 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:51:28,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-09 02:51:28,770 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-09 02:51:28,770 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:51:28,771 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 02:51:28,772 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:51:28,817 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 02:51:28,817 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 02:51:28,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92299416] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:51:28,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 02:51:28,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 16 [2024-11-09 02:51:28,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245035883] [2024-11-09 02:51:28,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:51:28,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 02:51:28,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:28,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 02:51:28,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2024-11-09 02:51:28,820 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-09 02:51:28,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 35 transitions, 303 flow. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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 02:51:28,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:28,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-09 02:51:28,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:28,862 INFO L124 PetriNetUnfolderBase]: 40/105 cut-off events. [2024-11-09 02:51:28,862 INFO L125 PetriNetUnfolderBase]: For 567/567 co-relation queries the response was YES. [2024-11-09 02:51:28,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 574 conditions, 105 events. 40/105 cut-off events. For 567/567 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 233 event pairs, 5 based on Foata normal form. 1/106 useless extension candidates. Maximal degree in co-relation 539. Up to 57 conditions per place. [2024-11-09 02:51:28,863 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 20 selfloop transitions, 1 changer transitions 21/45 dead transitions. [2024-11-09 02:51:28,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 45 transitions, 435 flow [2024-11-09 02:51:28,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:51:28,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:51:28,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 58 transitions. [2024-11-09 02:51:28,864 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5370370370370371 [2024-11-09 02:51:28,864 INFO L175 Difference]: Start difference. First operand has 104 places, 35 transitions, 303 flow. Second operand 6 states and 58 transitions. [2024-11-09 02:51:28,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 45 transitions, 435 flow [2024-11-09 02:51:28,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 45 transitions, 400 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-11-09 02:51:28,867 INFO L231 Difference]: Finished difference. Result has 95 places, 23 transitions, 155 flow [2024-11-09 02:51:28,867 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=155, PETRI_PLACES=95, PETRI_TRANSITIONS=23} [2024-11-09 02:51:28,867 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 75 predicate places. [2024-11-09 02:51:28,867 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 23 transitions, 155 flow [2024-11-09 02:51:28,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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 02:51:28,868 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:28,868 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:28,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-09 02:51:29,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-09 02:51:29,073 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:51:29,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:29,073 INFO L85 PathProgramCache]: Analyzing trace with hash -760826870, now seen corresponding path program 30 times [2024-11-09 02:51:29,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:29,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362356205] [2024-11-09 02:51:29,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:29,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:29,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:29,175 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:29,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:29,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362356205] [2024-11-09 02:51:29,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362356205] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:51:29,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558906769] [2024-11-09 02:51:29,175 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 02:51:29,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:29,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:51:29,177 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:51:29,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-09 02:51:29,217 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-09 02:51:29,217 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:51:29,217 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 02:51:29,218 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:51:29,353 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:29,354 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:51:29,425 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:51:29,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558906769] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:51:29,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:51:29,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 6] total 24 [2024-11-09 02:51:29,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765133239] [2024-11-09 02:51:29,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:51:29,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 02:51:29,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:29,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 02:51:29,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2024-11-09 02:51:29,432 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-09 02:51:29,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 23 transitions, 155 flow. Second operand has 25 states, 25 states have (on average 7.0) internal successors, (175), 25 states have internal predecessors, (175), 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 02:51:29,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:29,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-09 02:51:29,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:29,628 INFO L124 PetriNetUnfolderBase]: 28/79 cut-off events. [2024-11-09 02:51:29,628 INFO L125 PetriNetUnfolderBase]: For 438/438 co-relation queries the response was YES. [2024-11-09 02:51:29,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466 conditions, 79 events. 28/79 cut-off events. For 438/438 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 145 event pairs, 2 based on Foata normal form. 1/80 useless extension candidates. Maximal degree in co-relation 431. Up to 19 conditions per place. [2024-11-09 02:51:29,629 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 25 selfloop transitions, 16 changer transitions 5/49 dead transitions. [2024-11-09 02:51:29,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 49 transitions, 417 flow [2024-11-09 02:51:29,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 02:51:29,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-09 02:51:29,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 127 transitions. [2024-11-09 02:51:29,630 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4409722222222222 [2024-11-09 02:51:29,630 INFO L175 Difference]: Start difference. First operand has 95 places, 23 transitions, 155 flow. Second operand 16 states and 127 transitions. [2024-11-09 02:51:29,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 49 transitions, 417 flow [2024-11-09 02:51:29,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 49 transitions, 341 flow, removed 19 selfloop flow, removed 13 redundant places. [2024-11-09 02:51:29,631 INFO L231 Difference]: Finished difference. Result has 87 places, 30 transitions, 205 flow [2024-11-09 02:51:29,632 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=205, PETRI_PLACES=87, PETRI_TRANSITIONS=30} [2024-11-09 02:51:29,632 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 67 predicate places. [2024-11-09 02:51:29,632 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 30 transitions, 205 flow [2024-11-09 02:51:29,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.0) internal successors, (175), 25 states have internal predecessors, (175), 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 02:51:29,632 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:29,632 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:29,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-11-09 02:51:29,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:29,837 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:51:29,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:29,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1222305153, now seen corresponding path program 31 times [2024-11-09 02:51:29,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:29,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411150689] [2024-11-09 02:51:29,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:29,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:29,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:29,973 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:29,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:29,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411150689] [2024-11-09 02:51:29,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411150689] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:51:29,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486301226] [2024-11-09 02:51:29,974 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 02:51:29,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:29,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:51:29,977 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:51:29,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-09 02:51:30,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:30,013 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 02:51:30,014 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:51:30,095 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:30,095 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:51:30,212 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:30,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486301226] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:51:30,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:51:30,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 11] total 25 [2024-11-09 02:51:30,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875804183] [2024-11-09 02:51:30,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:51:30,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 02:51:30,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:30,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 02:51:30,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=434, Unknown=0, NotChecked=0, Total=650 [2024-11-09 02:51:30,215 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-09 02:51:30,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 30 transitions, 205 flow. Second operand has 26 states, 26 states have (on average 6.8076923076923075) internal successors, (177), 26 states have internal predecessors, (177), 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 02:51:30,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:30,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-09 02:51:30,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:30,295 INFO L124 PetriNetUnfolderBase]: 28/84 cut-off events. [2024-11-09 02:51:30,296 INFO L125 PetriNetUnfolderBase]: For 134/134 co-relation queries the response was YES. [2024-11-09 02:51:30,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 461 conditions, 84 events. 28/84 cut-off events. For 134/134 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 165 event pairs, 2 based on Foata normal form. 3/87 useless extension candidates. Maximal degree in co-relation 434. Up to 23 conditions per place. [2024-11-09 02:51:30,296 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 21 selfloop transitions, 7 changer transitions 17/48 dead transitions. [2024-11-09 02:51:30,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 48 transitions, 395 flow [2024-11-09 02:51:30,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 02:51:30,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-09 02:51:30,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 106 transitions. [2024-11-09 02:51:30,297 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.452991452991453 [2024-11-09 02:51:30,297 INFO L175 Difference]: Start difference. First operand has 87 places, 30 transitions, 205 flow. Second operand 13 states and 106 transitions. [2024-11-09 02:51:30,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 48 transitions, 395 flow [2024-11-09 02:51:30,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 48 transitions, 358 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-11-09 02:51:30,299 INFO L231 Difference]: Finished difference. Result has 92 places, 25 transitions, 151 flow [2024-11-09 02:51:30,300 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=151, PETRI_PLACES=92, PETRI_TRANSITIONS=25} [2024-11-09 02:51:30,300 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 72 predicate places. [2024-11-09 02:51:30,300 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 25 transitions, 151 flow [2024-11-09 02:51:30,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.8076923076923075) internal successors, (177), 26 states have internal predecessors, (177), 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 02:51:30,300 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:30,300 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:30,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-11-09 02:51:30,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:30,501 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:51:30,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:30,502 INFO L85 PathProgramCache]: Analyzing trace with hash -2091602513, now seen corresponding path program 32 times [2024-11-09 02:51:30,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:30,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857476562] [2024-11-09 02:51:30,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:30,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:30,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:30,659 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:30,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:30,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857476562] [2024-11-09 02:51:30,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857476562] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:51:30,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878683948] [2024-11-09 02:51:30,659 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:51:30,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:30,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:51:30,661 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:51:30,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-09 02:51:30,697 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:51:30,698 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:51:30,698 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 02:51:30,699 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:51:30,854 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:30,854 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:51:30,934 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:51:30,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878683948] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:51:30,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:51:30,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 7] total 29 [2024-11-09 02:51:30,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46747476] [2024-11-09 02:51:30,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:51:30,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-09 02:51:30,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:30,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-09 02:51:30,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=694, Unknown=0, NotChecked=0, Total=870 [2024-11-09 02:51:30,936 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-09 02:51:30,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 25 transitions, 151 flow. Second operand has 30 states, 30 states have (on average 6.866666666666666) internal successors, (206), 30 states have internal predecessors, (206), 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 02:51:30,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:30,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-09 02:51:30,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:31,097 INFO L124 PetriNetUnfolderBase]: 31/88 cut-off events. [2024-11-09 02:51:31,097 INFO L125 PetriNetUnfolderBase]: For 208/208 co-relation queries the response was YES. [2024-11-09 02:51:31,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 465 conditions, 88 events. 31/88 cut-off events. For 208/208 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 160 event pairs, 2 based on Foata normal form. 1/89 useless extension candidates. Maximal degree in co-relation 436. Up to 22 conditions per place. [2024-11-09 02:51:31,098 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 28 selfloop transitions, 19 changer transitions 5/55 dead transitions. [2024-11-09 02:51:31,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 55 transitions, 414 flow [2024-11-09 02:51:31,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 02:51:31,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-09 02:51:31,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 148 transitions. [2024-11-09 02:51:31,099 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4327485380116959 [2024-11-09 02:51:31,099 INFO L175 Difference]: Start difference. First operand has 92 places, 25 transitions, 151 flow. Second operand 19 states and 148 transitions. [2024-11-09 02:51:31,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 55 transitions, 414 flow [2024-11-09 02:51:31,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 55 transitions, 393 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-11-09 02:51:31,100 INFO L231 Difference]: Finished difference. Result has 96 places, 33 transitions, 239 flow [2024-11-09 02:51:31,100 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=239, PETRI_PLACES=96, PETRI_TRANSITIONS=33} [2024-11-09 02:51:31,100 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 76 predicate places. [2024-11-09 02:51:31,101 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 33 transitions, 239 flow [2024-11-09 02:51:31,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.866666666666666) internal successors, (206), 30 states have internal predecessors, (206), 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 02:51:31,101 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:51:31,101 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:51:31,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-11-09 02:51:31,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-09 02:51:31,302 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-09 02:51:31,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:51:31,302 INFO L85 PathProgramCache]: Analyzing trace with hash -238720932, now seen corresponding path program 33 times [2024-11-09 02:51:31,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:51:31,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736369998] [2024-11-09 02:51:31,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:51:31,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:51:31,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:51:31,364 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:51:31,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:51:31,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736369998] [2024-11-09 02:51:31,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736369998] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:51:31,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454649222] [2024-11-09 02:51:31,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:51:31,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:51:31,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:51:31,367 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:51:31,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-09 02:51:31,401 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 02:51:31,401 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:51:31,401 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 02:51:31,402 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:51:31,438 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-09 02:51:31,438 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 02:51:31,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454649222] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:51:31,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 02:51:31,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 13 [2024-11-09 02:51:31,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540631579] [2024-11-09 02:51:31,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:51:31,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 02:51:31,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:51:31,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 02:51:31,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2024-11-09 02:51:31,440 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-09 02:51:31,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 33 transitions, 239 flow. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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 02:51:31,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:51:31,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-09 02:51:31,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:51:31,468 INFO L124 PetriNetUnfolderBase]: 29/84 cut-off events. [2024-11-09 02:51:31,468 INFO L125 PetriNetUnfolderBase]: For 146/146 co-relation queries the response was YES. [2024-11-09 02:51:31,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 84 events. 29/84 cut-off events. For 146/146 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 164 event pairs, 0 based on Foata normal form. 1/85 useless extension candidates. Maximal degree in co-relation 432. Up to 37 conditions per place. [2024-11-09 02:51:31,469 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 0 selfloop transitions, 0 changer transitions 36/36 dead transitions. [2024-11-09 02:51:31,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 36 transitions, 312 flow [2024-11-09 02:51:31,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:51:31,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:51:31,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 49 transitions. [2024-11-09 02:51:31,470 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4537037037037037 [2024-11-09 02:51:31,470 INFO L175 Difference]: Start difference. First operand has 96 places, 33 transitions, 239 flow. Second operand 6 states and 49 transitions. [2024-11-09 02:51:31,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 36 transitions, 312 flow [2024-11-09 02:51:31,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 36 transitions, 256 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-11-09 02:51:31,471 INFO L231 Difference]: Finished difference. Result has 87 places, 0 transitions, 0 flow [2024-11-09 02:51:31,471 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=87, PETRI_TRANSITIONS=0} [2024-11-09 02:51:31,471 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 67 predicate places. [2024-11-09 02:51:31,471 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 0 transitions, 0 flow [2024-11-09 02:51:31,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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 02:51:31,474 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2024-11-09 02:51:31,474 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2024-11-09 02:51:31,474 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-11-09 02:51:31,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-11-09 02:51:31,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-09 02:51:31,675 INFO L407 BasicCegarLoop]: Path program histogram: [33, 2, 2, 1] [2024-11-09 02:51:31,679 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-09 02:51:31,682 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 02:51:31,686 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 02:51:31 BasicIcfg [2024-11-09 02:51:31,687 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 02:51:31,687 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 02:51:31,687 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 02:51:31,687 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 02:51:31,688 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:51:00" (3/4) ... [2024-11-09 02:51:31,689 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-09 02:51:31,692 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-09 02:51:31,692 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-09 02:51:31,695 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 44 nodes and edges [2024-11-09 02:51:31,697 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2024-11-09 02:51:31,697 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-09 02:51:31,697 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-09 02:51:31,771 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-09 02:51:31,771 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-09 02:51:31,771 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 02:51:31,772 INFO L158 Benchmark]: Toolchain (without parser) took 31759.51ms. Allocated memory was 178.3MB in the beginning and 906.0MB in the end (delta: 727.7MB). Free memory was 150.5MB in the beginning and 564.1MB in the end (delta: -413.7MB). Peak memory consumption was 315.1MB. Max. memory is 16.1GB. [2024-11-09 02:51:31,772 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 115.3MB. Free memory is still 77.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 02:51:31,772 INFO L158 Benchmark]: CACSL2BoogieTranslator took 247.60ms. Allocated memory is still 178.3MB. Free memory was 150.5MB in the beginning and 137.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-09 02:51:31,773 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.95ms. Allocated memory is still 178.3MB. Free memory was 137.9MB in the beginning and 135.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 02:51:31,773 INFO L158 Benchmark]: Boogie Preprocessor took 34.73ms. Allocated memory is still 178.3MB. Free memory was 135.8MB in the beginning and 134.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 02:51:31,773 INFO L158 Benchmark]: RCFGBuilder took 348.55ms. Allocated memory is still 178.3MB. Free memory was 134.7MB in the beginning and 113.7MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-09 02:51:31,774 INFO L158 Benchmark]: TraceAbstraction took 31006.32ms. Allocated memory was 178.3MB in the beginning and 906.0MB in the end (delta: 727.7MB). Free memory was 112.7MB in the beginning and 569.4MB in the end (delta: -456.7MB). Peak memory consumption was 273.1MB. Max. memory is 16.1GB. [2024-11-09 02:51:31,774 INFO L158 Benchmark]: Witness Printer took 84.40ms. Allocated memory is still 906.0MB. Free memory was 569.4MB in the beginning and 564.1MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-09 02:51:31,775 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 115.3MB. Free memory is still 77.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 247.60ms. Allocated memory is still 178.3MB. Free memory was 150.5MB in the beginning and 137.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.95ms. Allocated memory is still 178.3MB. Free memory was 137.9MB in the beginning and 135.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.73ms. Allocated memory is still 178.3MB. Free memory was 135.8MB in the beginning and 134.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 348.55ms. Allocated memory is still 178.3MB. Free memory was 134.7MB in the beginning and 113.7MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 31006.32ms. Allocated memory was 178.3MB in the beginning and 906.0MB in the end (delta: 727.7MB). Free memory was 112.7MB in the beginning and 569.4MB in the end (delta: -456.7MB). Peak memory consumption was 273.1MB. Max. memory is 16.1GB. * Witness Printer took 84.40ms. Allocated memory is still 906.0MB. Free memory was 569.4MB in the beginning and 564.1MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 70]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 25 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 30.9s, OverallIterations: 38, TraceHistogramMax: 6, PathProgramHistogramMax: 33, EmptinessCheckTime: 0.0s, AutomataDifference: 14.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1779 SdHoareTripleChecker+Valid, 3.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1779 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 2.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 431 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6399 IncrementalHoareTripleChecker+Invalid, 6830 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 431 mSolverCounterUnsat, 0 mSDtfsCounter, 6399 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1547 GetRequests, 851 SyntacticMatches, 20 SemanticMatches, 676 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4345 ImplicationChecksByTransitivity, 4.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18978occurred in iteration=31, InterpolantAutomatonStates: 473, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 7.1s InterpolantComputationTime, 1317 NumberOfCodeBlocks, 1304 NumberOfCodeBlocksAsserted, 118 NumberOfCheckSat, 1728 ConstructedInterpolants, 0 QuantifiedInterpolants, 7925 SizeOfPredicates, 7 NumberOfNonLiveVariables, 3350 ConjunctsInSsa, 305 ConjunctsInUnsatCore, 100 InterpolantComputations, 11 PerfectInterpolantSequences, 456/1110 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-09 02:51:31,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE