./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/bench-exp1x3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f 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/bench-exp1x3.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 52eeb5cce5645e9dacc261319eae3d665b5cc432ff3ddd2ef39502a44996e68d --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 08:17:57,443 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 08:17:57,500 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-12 08:17:57,505 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 08:17:57,505 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 08:17:57,529 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 08:17:57,530 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 08:17:57,530 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 08:17:57,531 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 08:17:57,532 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 08:17:57,533 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 08:17:57,533 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 08:17:57,533 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 08:17:57,533 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 08:17:57,534 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 08:17:57,534 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 08:17:57,534 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 08:17:57,534 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 08:17:57,535 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 08:17:57,535 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 08:17:57,538 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 08:17:57,538 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 08:17:57,538 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 08:17:57,538 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 08:17:57,539 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 08:17:57,539 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 08:17:57,539 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 08:17:57,539 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 08:17:57,540 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 08:17:57,540 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 08:17:57,540 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 08:17:57,541 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 08:17:57,541 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 08:17:57,541 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 08:17:57,541 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 08:17:57,541 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 08:17:57,541 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 08:17:57,542 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 08:17:57,542 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 08:17:57,542 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 08:17:57,542 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 08:17:57,543 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 08:17:57,543 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52eeb5cce5645e9dacc261319eae3d665b5cc432ff3ddd2ef39502a44996e68d [2024-11-12 08:17:57,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 08:17:57,771 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 08:17:57,773 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 08:17:57,774 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 08:17:57,774 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 08:17:57,775 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/bench-exp1x3.wvr.c [2024-11-12 08:17:58,973 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 08:17:59,120 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 08:17:59,121 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp1x3.wvr.c [2024-11-12 08:17:59,129 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6cd1e251/baaeb0bc361d4b34a7c155f185afd98c/FLAGd3dd3a3eb [2024-11-12 08:17:59,143 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6cd1e251/baaeb0bc361d4b34a7c155f185afd98c [2024-11-12 08:17:59,145 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 08:17:59,147 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 08:17:59,148 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 08:17:59,149 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 08:17:59,153 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 08:17:59,154 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:17:59" (1/1) ... [2024-11-12 08:17:59,154 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1329594b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:17:59, skipping insertion in model container [2024-11-12 08:17:59,155 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:17:59" (1/1) ... [2024-11-12 08:17:59,174 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 08:17:59,318 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/bench-exp1x3.wvr.c[1875,1888] [2024-11-12 08:17:59,321 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 08:17:59,327 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 08:17:59,342 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/bench-exp1x3.wvr.c[1875,1888] [2024-11-12 08:17:59,342 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 08:17:59,354 INFO L204 MainTranslator]: Completed translation [2024-11-12 08:17:59,355 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:17:59 WrapperNode [2024-11-12 08:17:59,355 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 08:17:59,356 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 08:17:59,356 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 08:17:59,356 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 08:17:59,361 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:17:59" (1/1) ... [2024-11-12 08:17:59,366 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:17:59" (1/1) ... [2024-11-12 08:17:59,377 INFO L138 Inliner]: procedures = 17, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 47 [2024-11-12 08:17:59,377 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 08:17:59,378 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 08:17:59,378 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 08:17:59,378 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 08:17:59,387 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:17:59" (1/1) ... [2024-11-12 08:17:59,387 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:17:59" (1/1) ... [2024-11-12 08:17:59,388 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:17:59" (1/1) ... [2024-11-12 08:17:59,410 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]. [2024-11-12 08:17:59,410 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:17:59" (1/1) ... [2024-11-12 08:17:59,410 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:17:59" (1/1) ... [2024-11-12 08:17:59,412 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:17:59" (1/1) ... [2024-11-12 08:17:59,415 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:17:59" (1/1) ... [2024-11-12 08:17:59,415 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:17:59" (1/1) ... [2024-11-12 08:17:59,416 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:17:59" (1/1) ... [2024-11-12 08:17:59,417 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 08:17:59,418 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 08:17:59,418 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 08:17:59,418 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 08:17:59,419 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:17:59" (1/1) ... [2024-11-12 08:17:59,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 08:17:59,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:17:59,452 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) [2024-11-12 08:17:59,454 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 [2024-11-12 08:17:59,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 08:17:59,487 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-12 08:17:59,488 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-12 08:17:59,488 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-12 08:17:59,488 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-12 08:17:59,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 08:17:59,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 08:17:59,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 08:17:59,490 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 08:17:59,556 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 08:17:59,558 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 08:17:59,680 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 08:17:59,680 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 08:17:59,774 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 08:17:59,774 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-12 08:17:59,774 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:17:59 BoogieIcfgContainer [2024-11-12 08:17:59,774 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 08:17:59,777 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 08:17:59,777 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 08:17:59,779 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 08:17:59,779 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:17:59" (1/3) ... [2024-11-12 08:17:59,780 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59507512 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:17:59, skipping insertion in model container [2024-11-12 08:17:59,780 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:17:59" (2/3) ... [2024-11-12 08:17:59,780 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59507512 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:17:59, skipping insertion in model container [2024-11-12 08:17:59,781 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:17:59" (3/3) ... [2024-11-12 08:17:59,782 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp1x3.wvr.c [2024-11-12 08:17:59,793 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 08:17:59,794 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-12 08:17:59,794 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 08:17:59,837 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-12 08:17:59,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 23 places, 18 transitions, 50 flow [2024-11-12 08:17:59,886 INFO L124 PetriNetUnfolderBase]: 2/16 cut-off events. [2024-11-12 08:17:59,886 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-12 08:17:59,888 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. [2024-11-12 08:17:59,888 INFO L82 GeneralOperation]: Start removeDead. Operand has 23 places, 18 transitions, 50 flow [2024-11-12 08:17:59,890 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 20 places, 15 transitions, 42 flow [2024-11-12 08:17:59,896 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 08:17:59,902 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;@5b64d4cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 08:17:59,903 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-12 08:17:59,910 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 08:17:59,911 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2024-11-12 08:17:59,911 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-12 08:17:59,911 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:17:59,912 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:17:59,912 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:17:59,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:17:59,916 INFO L85 PathProgramCache]: Analyzing trace with hash -654319000, now seen corresponding path program 1 times [2024-11-12 08:17:59,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:17:59,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317449717] [2024-11-12 08:17:59,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:17:59,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:18:00,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:18:00,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:18:00,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:18:00,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317449717] [2024-11-12 08:18:00,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317449717] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:18:00,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:18:00,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 08:18:00,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315742057] [2024-11-12 08:18:00,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:18:00,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 08:18:00,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:18:00,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 08:18:00,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 08:18:00,200 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-12 08:18:00,202 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) [2024-11-12 08:18:00,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:18:00,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-12 08:18:00,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:18:00,256 INFO L124 PetriNetUnfolderBase]: 59/104 cut-off events. [2024-11-12 08:18:00,256 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-12 08:18:00,257 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 279 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. [2024-11-12 08:18:00,259 INFO L140 encePairwiseOnDemand]: 14/18 looper letters, 17 selfloop transitions, 3 changer transitions 1/24 dead transitions. [2024-11-12 08:18:00,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 24 transitions, 111 flow [2024-11-12 08:18:00,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 08:18:00,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 08:18:00,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2024-11-12 08:18:00,278 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6851851851851852 [2024-11-12 08:18:00,280 INFO L175 Difference]: Start difference. First operand has 20 places, 15 transitions, 42 flow. Second operand 3 states and 37 transitions. [2024-11-12 08:18:00,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 24 transitions, 111 flow [2024-11-12 08:18:00,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 24 transitions, 97 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-12 08:18:00,283 INFO L231 Difference]: Finished difference. Result has 19 places, 17 transitions, 53 flow [2024-11-12 08:18:00,285 INFO L262 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} [2024-11-12 08:18:00,287 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, -1 predicate places. [2024-11-12 08:18:00,287 INFO L471 AbstractCegarLoop]: Abstraction has has 19 places, 17 transitions, 53 flow [2024-11-12 08:18:00,288 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) [2024-11-12 08:18:00,288 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:18:00,288 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:18:00,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 08:18:00,288 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:18:00,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:18:00,289 INFO L85 PathProgramCache]: Analyzing trace with hash 892593983, now seen corresponding path program 1 times [2024-11-12 08:18:00,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:18:00,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879313729] [2024-11-12 08:18:00,290 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:18:00,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:18:00,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:18:00,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:18:00,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:18:00,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879313729] [2024-11-12 08:18:00,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879313729] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:18:00,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:18:00,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 08:18:00,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762944180] [2024-11-12 08:18:00,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:18:00,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 08:18:00,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:18:00,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 08:18:00,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 08:18:00,408 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-12 08:18:00,408 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) [2024-11-12 08:18:00,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:18:00,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-12 08:18:00,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:18:00,483 INFO L124 PetriNetUnfolderBase]: 57/101 cut-off events. [2024-11-12 08:18:00,483 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-11-12 08:18:00,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 101 events. 57/101 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 245 event pairs, 1 based on Foata normal form. 2/103 useless extension candidates. Maximal degree in co-relation 72. Up to 38 conditions per place. [2024-11-12 08:18:00,484 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 22 selfloop transitions, 6 changer transitions 4/35 dead transitions. [2024-11-12 08:18:00,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 35 transitions, 163 flow [2024-11-12 08:18:00,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 08:18:00,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 08:18:00,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 58 transitions. [2024-11-12 08:18:00,488 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6444444444444445 [2024-11-12 08:18:00,488 INFO L175 Difference]: Start difference. First operand has 19 places, 17 transitions, 53 flow. Second operand 5 states and 58 transitions. [2024-11-12 08:18:00,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 35 transitions, 163 flow [2024-11-12 08:18:00,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 35 transitions, 159 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 08:18:00,490 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 74 flow [2024-11-12 08:18:00,490 INFO L262 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=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=74, PETRI_PLACES=23, PETRI_TRANSITIONS=19} [2024-11-12 08:18:00,491 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 3 predicate places. [2024-11-12 08:18:00,491 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 74 flow [2024-11-12 08:18:00,492 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) [2024-11-12 08:18:00,492 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:18:00,492 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:18:00,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 08:18:00,492 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:18:00,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:18:00,494 INFO L85 PathProgramCache]: Analyzing trace with hash -2113678936, now seen corresponding path program 1 times [2024-11-12 08:18:00,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:18:00,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640909872] [2024-11-12 08:18:00,494 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:18:00,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:18:00,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:18:00,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:18:00,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:18:00,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640909872] [2024-11-12 08:18:00,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640909872] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:18:00,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:18:00,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 08:18:00,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634404961] [2024-11-12 08:18:00,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:18:00,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 08:18:00,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:18:00,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 08:18:00,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 08:18:00,570 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-12 08:18:00,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 74 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) [2024-11-12 08:18:00,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:18:00,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-12 08:18:00,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:18:00,646 INFO L124 PetriNetUnfolderBase]: 51/93 cut-off events. [2024-11-12 08:18:00,647 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2024-11-12 08:18:00,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 93 events. 51/93 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 222 event pairs, 1 based on Foata normal form. 3/96 useless extension candidates. Maximal degree in co-relation 79. Up to 46 conditions per place. [2024-11-12 08:18:00,649 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 17 selfloop transitions, 4 changer transitions 7/31 dead transitions. [2024-11-12 08:18:00,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 31 transitions, 161 flow [2024-11-12 08:18:00,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 08:18:00,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 08:18:00,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 54 transitions. [2024-11-12 08:18:00,651 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-12 08:18:00,651 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 74 flow. Second operand 5 states and 54 transitions. [2024-11-12 08:18:00,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 31 transitions, 161 flow [2024-11-12 08:18:00,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 31 transitions, 158 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 08:18:00,652 INFO L231 Difference]: Finished difference. Result has 26 places, 17 transitions, 68 flow [2024-11-12 08:18:00,652 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=68, PETRI_PLACES=26, PETRI_TRANSITIONS=17} [2024-11-12 08:18:00,653 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 6 predicate places. [2024-11-12 08:18:00,653 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 17 transitions, 68 flow [2024-11-12 08:18:00,653 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) [2024-11-12 08:18:00,653 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:18:00,653 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:18:00,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 08:18:00,653 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:18:00,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:18:00,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1919797381, now seen corresponding path program 2 times [2024-11-12 08:18:00,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:18:00,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659982815] [2024-11-12 08:18:00,655 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:18:00,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:18:00,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:18:00,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:18:00,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:18:00,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659982815] [2024-11-12 08:18:00,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659982815] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:18:00,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275804138] [2024-11-12 08:18:00,726 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 08:18:00,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:18:00,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:18:00,729 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) [2024-11-12 08:18:00,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 08:18:00,777 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 08:18:00,777 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:18:00,778 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-12 08:18:00,781 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:18:00,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:18:00,907 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:18:00,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:18:00,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275804138] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:18:00,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:18:00,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-11-12 08:18:00,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39125082] [2024-11-12 08:18:00,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:18:00,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 08:18:00,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:18:00,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 08:18:00,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-12 08:18:00,967 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-12 08:18:00,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 17 transitions, 68 flow. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:18:00,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:18:00,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-12 08:18:00,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:18:01,058 INFO L124 PetriNetUnfolderBase]: 41/74 cut-off events. [2024-11-12 08:18:01,060 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2024-11-12 08:18:01,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 74 events. 41/74 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 147 event pairs, 3 based on Foata normal form. 5/79 useless extension candidates. Maximal degree in co-relation 71. Up to 48 conditions per place. [2024-11-12 08:18:01,062 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 20 selfloop transitions, 6 changer transitions 0/29 dead transitions. [2024-11-12 08:18:01,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 29 transitions, 155 flow [2024-11-12 08:18:01,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 08:18:01,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 08:18:01,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 53 transitions. [2024-11-12 08:18:01,064 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5888888888888889 [2024-11-12 08:18:01,064 INFO L175 Difference]: Start difference. First operand has 26 places, 17 transitions, 68 flow. Second operand 5 states and 53 transitions. [2024-11-12 08:18:01,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 29 transitions, 155 flow [2024-11-12 08:18:01,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 29 transitions, 145 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-12 08:18:01,066 INFO L231 Difference]: Finished difference. Result has 28 places, 20 transitions, 95 flow [2024-11-12 08:18:01,066 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=95, PETRI_PLACES=28, PETRI_TRANSITIONS=20} [2024-11-12 08:18:01,067 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 8 predicate places. [2024-11-12 08:18:01,067 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 20 transitions, 95 flow [2024-11-12 08:18:01,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:18:01,067 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:18:01,067 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:18:01,080 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-12 08:18:01,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:18:01,268 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:18:01,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:18:01,269 INFO L85 PathProgramCache]: Analyzing trace with hash 722300088, now seen corresponding path program 2 times [2024-11-12 08:18:01,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:18:01,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283582934] [2024-11-12 08:18:01,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:18:01,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:18:01,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:18:01,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:18:01,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:18:01,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283582934] [2024-11-12 08:18:01,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283582934] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:18:01,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236233423] [2024-11-12 08:18:01,328 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 08:18:01,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:18:01,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:18:01,329 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) [2024-11-12 08:18:01,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 08:18:01,369 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 08:18:01,369 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:18:01,370 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-12 08:18:01,371 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:18:01,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:18:01,451 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:18:01,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:18:01,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236233423] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:18:01,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:18:01,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-11-12 08:18:01,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479718531] [2024-11-12 08:18:01,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:18:01,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 08:18:01,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:18:01,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 08:18:01,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-12 08:18:01,492 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-12 08:18:01,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 20 transitions, 95 flow. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) [2024-11-12 08:18:01,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:18:01,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-12 08:18:01,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:18:01,575 INFO L124 PetriNetUnfolderBase]: 37/70 cut-off events. [2024-11-12 08:18:01,575 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2024-11-12 08:18:01,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 70 events. 37/70 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 138 event pairs, 2 based on Foata normal form. 4/74 useless extension candidates. Maximal degree in co-relation 121. Up to 55 conditions per place. [2024-11-12 08:18:01,576 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 20 selfloop transitions, 6 changer transitions 0/29 dead transitions. [2024-11-12 08:18:01,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 180 flow [2024-11-12 08:18:01,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 08:18:01,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 08:18:01,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 50 transitions. [2024-11-12 08:18:01,580 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-11-12 08:18:01,580 INFO L175 Difference]: Start difference. First operand has 28 places, 20 transitions, 95 flow. Second operand 5 states and 50 transitions. [2024-11-12 08:18:01,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 180 flow [2024-11-12 08:18:01,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 29 transitions, 175 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-12 08:18:01,582 INFO L231 Difference]: Finished difference. Result has 33 places, 23 transitions, 131 flow [2024-11-12 08:18:01,582 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=131, PETRI_PLACES=33, PETRI_TRANSITIONS=23} [2024-11-12 08:18:01,583 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 13 predicate places. [2024-11-12 08:18:01,583 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 23 transitions, 131 flow [2024-11-12 08:18:01,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) [2024-11-12 08:18:01,585 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:18:01,585 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:18:01,598 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-12 08:18:01,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:18:01,786 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:18:01,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:18:01,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1268642375, now seen corresponding path program 1 times [2024-11-12 08:18:01,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:18:01,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672714452] [2024-11-12 08:18:01,786 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:18:01,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:18:01,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:18:02,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:18:02,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:18:02,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672714452] [2024-11-12 08:18:02,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672714452] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:18:02,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986292843] [2024-11-12 08:18:02,094 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:18:02,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:18:02,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:18:02,097 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) [2024-11-12 08:18:02,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 08:18:02,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:18:02,174 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-12 08:18:02,176 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:18:32,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:18:32,944 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:18:34,868 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:18:34,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986292843] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:18:34,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:18:34,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-12 08:18:34,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736334334] [2024-11-12 08:18:34,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:18:34,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-12 08:18:34,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:18:34,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-12 08:18:34,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=147, Unknown=4, NotChecked=0, Total=210 [2024-11-12 08:18:34,870 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-12 08:18:34,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 23 transitions, 131 flow. Second operand has 15 states, 15 states have (on average 6.933333333333334) internal successors, (104), 15 states have internal predecessors, (104), 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) [2024-11-12 08:18:34,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:18:34,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-12 08:18:34,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:18:42,583 WARN L286 SmtUtils]: Spent 6.10s on a formula simplification. DAG size of input: 41 DAG size of output: 26 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-12 08:18:44,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-12 08:18:45,221 INFO L124 PetriNetUnfolderBase]: 125/239 cut-off events. [2024-11-12 08:18:45,222 INFO L125 PetriNetUnfolderBase]: For 460/460 co-relation queries the response was YES. [2024-11-12 08:18:45,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 973 conditions, 239 events. 125/239 cut-off events. For 460/460 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 827 event pairs, 6 based on Foata normal form. 6/245 useless extension candidates. Maximal degree in co-relation 548. Up to 85 conditions per place. [2024-11-12 08:18:45,225 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 49 selfloop transitions, 25 changer transitions 14/91 dead transitions. [2024-11-12 08:18:45,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 91 transitions, 651 flow [2024-11-12 08:18:45,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-12 08:18:45,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-12 08:18:45,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 148 transitions. [2024-11-12 08:18:45,228 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6324786324786325 [2024-11-12 08:18:45,228 INFO L175 Difference]: Start difference. First operand has 33 places, 23 transitions, 131 flow. Second operand 13 states and 148 transitions. [2024-11-12 08:18:45,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 91 transitions, 651 flow [2024-11-12 08:18:45,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 91 transitions, 636 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-12 08:18:45,234 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 383 flow [2024-11-12 08:18:45,234 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=383, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2024-11-12 08:18:45,235 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 31 predicate places. [2024-11-12 08:18:45,235 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 383 flow [2024-11-12 08:18:45,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.933333333333334) internal successors, (104), 15 states have internal predecessors, (104), 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) [2024-11-12 08:18:45,235 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:18:45,235 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:18:45,248 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-12 08:18:45,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:18:45,436 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:18:45,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:18:45,436 INFO L85 PathProgramCache]: Analyzing trace with hash 21569361, now seen corresponding path program 2 times [2024-11-12 08:18:45,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:18:45,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282700494] [2024-11-12 08:18:45,437 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:18:45,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:18:45,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:18:45,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:18:45,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:18:45,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282700494] [2024-11-12 08:18:45,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282700494] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:18:45,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863022920] [2024-11-12 08:18:45,664 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 08:18:45,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:18:45,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:18:45,665 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) [2024-11-12 08:18:45,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-12 08:18:45,731 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 08:18:45,731 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:18:45,732 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-12 08:18:45,733 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:18:57,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:18:57,257 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:18:57,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:18:57,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863022920] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:18:57,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:18:57,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-12 08:18:57,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470203502] [2024-11-12 08:18:57,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:18:57,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-12 08:18:57,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:18:57,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-12 08:18:57,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=140, Unknown=1, NotChecked=0, Total=210 [2024-11-12 08:18:57,789 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-12 08:18:57,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 383 flow. Second operand has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 states have internal predecessors, (103), 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) [2024-11-12 08:18:57,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:18:57,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-12 08:18:57,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:19:02,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-12 08:19:06,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-12 08:19:10,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-12 08:19:12,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-12 08:19:15,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.21s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-12 08:19:19,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-12 08:19:24,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-12 08:19:28,111 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-12 08:19:29,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-12 08:19:29,989 INFO L124 PetriNetUnfolderBase]: 188/359 cut-off events. [2024-11-12 08:19:29,990 INFO L125 PetriNetUnfolderBase]: For 1715/1715 co-relation queries the response was YES. [2024-11-12 08:19:29,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1893 conditions, 359 events. 188/359 cut-off events. For 1715/1715 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1422 event pairs, 17 based on Foata normal form. 7/366 useless extension candidates. Maximal degree in co-relation 1832. Up to 210 conditions per place. [2024-11-12 08:19:29,995 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 65 selfloop transitions, 28 changer transitions 11/107 dead transitions. [2024-11-12 08:19:29,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 107 transitions, 1020 flow [2024-11-12 08:19:29,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-12 08:19:29,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-12 08:19:29,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 151 transitions. [2024-11-12 08:19:29,997 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5992063492063492 [2024-11-12 08:19:29,997 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 383 flow. Second operand 14 states and 151 transitions. [2024-11-12 08:19:29,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 107 transitions, 1020 flow [2024-11-12 08:19:30,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 107 transitions, 915 flow, removed 51 selfloop flow, removed 2 redundant places. [2024-11-12 08:19:30,006 INFO L231 Difference]: Finished difference. Result has 68 places, 64 transitions, 583 flow [2024-11-12 08:19:30,006 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=583, PETRI_PLACES=68, PETRI_TRANSITIONS=64} [2024-11-12 08:19:30,006 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 48 predicate places. [2024-11-12 08:19:30,007 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 64 transitions, 583 flow [2024-11-12 08:19:30,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 states have internal predecessors, (103), 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) [2024-11-12 08:19:30,007 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:19:30,007 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:19:30,021 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-12 08:19:30,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:19:30,208 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:19:30,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:19:30,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1610327901, now seen corresponding path program 3 times [2024-11-12 08:19:30,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:19:30,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669927160] [2024-11-12 08:19:30,209 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:19:30,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:19:30,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:19:30,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:19:30,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:19:30,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669927160] [2024-11-12 08:19:30,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669927160] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:19:30,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713129656] [2024-11-12 08:19:30,291 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 08:19:30,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:19:30,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:19:30,293 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) [2024-11-12 08:19:30,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-12 08:19:30,343 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-12 08:19:30,343 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:19:30,344 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-12 08:19:30,346 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:19:31,018 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:19:31,019 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:19:31,073 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:19:31,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713129656] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:19:31,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:19:31,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-12 08:19:31,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208226475] [2024-11-12 08:19:31,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:19:31,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-12 08:19:31,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:19:31,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-12 08:19:31,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-12 08:19:31,075 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-12 08:19:31,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 64 transitions, 583 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 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) [2024-11-12 08:19:31,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:19:31,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-12 08:19:31,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:19:33,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-12 08:19:33,998 INFO L124 PetriNetUnfolderBase]: 235/451 cut-off events. [2024-11-12 08:19:33,999 INFO L125 PetriNetUnfolderBase]: For 3429/3429 co-relation queries the response was YES. [2024-11-12 08:19:34,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2538 conditions, 451 events. 235/451 cut-off events. For 3429/3429 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1904 event pairs, 5 based on Foata normal form. 16/467 useless extension candidates. Maximal degree in co-relation 2462. Up to 169 conditions per place. [2024-11-12 08:19:34,003 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 75 selfloop transitions, 30 changer transitions 17/125 dead transitions. [2024-11-12 08:19:34,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 125 transitions, 1347 flow [2024-11-12 08:19:34,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-12 08:19:34,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-12 08:19:34,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-11-12 08:19:34,005 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.601010101010101 [2024-11-12 08:19:34,005 INFO L175 Difference]: Start difference. First operand has 68 places, 64 transitions, 583 flow. Second operand 11 states and 119 transitions. [2024-11-12 08:19:34,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 125 transitions, 1347 flow [2024-11-12 08:19:34,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 125 transitions, 1208 flow, removed 65 selfloop flow, removed 5 redundant places. [2024-11-12 08:19:34,014 INFO L231 Difference]: Finished difference. Result has 76 places, 81 transitions, 722 flow [2024-11-12 08:19:34,014 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=722, PETRI_PLACES=76, PETRI_TRANSITIONS=81} [2024-11-12 08:19:34,015 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 56 predicate places. [2024-11-12 08:19:34,016 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 81 transitions, 722 flow [2024-11-12 08:19:34,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 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) [2024-11-12 08:19:34,016 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:19:34,016 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:19:34,028 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-12 08:19:34,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:19:34,217 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:19:34,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:19:34,217 INFO L85 PathProgramCache]: Analyzing trace with hash -962421685, now seen corresponding path program 4 times [2024-11-12 08:19:34,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:19:34,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73314764] [2024-11-12 08:19:34,218 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:19:34,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:19:34,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:19:34,290 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:19:34,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:19:34,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73314764] [2024-11-12 08:19:34,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73314764] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:19:34,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094620218] [2024-11-12 08:19:34,291 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-12 08:19:34,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:19:34,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:19:34,292 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) [2024-11-12 08:19:34,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-12 08:19:34,336 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-12 08:19:34,336 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:19:34,337 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-12 08:19:34,338 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:19:35,499 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:19:35,499 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:19:35,571 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:19:35,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094620218] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:19:35,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:19:35,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-12 08:19:35,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880266663] [2024-11-12 08:19:35,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:19:35,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-12 08:19:35,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:19:35,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-12 08:19:35,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-12 08:19:35,572 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2024-11-12 08:19:35,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 81 transitions, 722 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 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) [2024-11-12 08:19:35,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:19:35,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2024-11-12 08:19:35,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:19:36,055 INFO L124 PetriNetUnfolderBase]: 216/413 cut-off events. [2024-11-12 08:19:36,055 INFO L125 PetriNetUnfolderBase]: For 3484/3484 co-relation queries the response was YES. [2024-11-12 08:19:36,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2321 conditions, 413 events. 216/413 cut-off events. For 3484/3484 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1645 event pairs, 18 based on Foata normal form. 12/425 useless extension candidates. Maximal degree in co-relation 2249. Up to 252 conditions per place. [2024-11-12 08:19:36,059 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 71 selfloop transitions, 36 changer transitions 0/110 dead transitions. [2024-11-12 08:19:36,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 110 transitions, 1109 flow [2024-11-12 08:19:36,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-12 08:19:36,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-12 08:19:36,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-11-12 08:19:36,060 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5656565656565656 [2024-11-12 08:19:36,060 INFO L175 Difference]: Start difference. First operand has 76 places, 81 transitions, 722 flow. Second operand 11 states and 112 transitions. [2024-11-12 08:19:36,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 110 transitions, 1109 flow [2024-11-12 08:19:36,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 110 transitions, 1045 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-11-12 08:19:36,070 INFO L231 Difference]: Finished difference. Result has 82 places, 86 transitions, 845 flow [2024-11-12 08:19:36,070 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=845, PETRI_PLACES=82, PETRI_TRANSITIONS=86} [2024-11-12 08:19:36,071 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 62 predicate places. [2024-11-12 08:19:36,071 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 86 transitions, 845 flow [2024-11-12 08:19:36,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 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) [2024-11-12 08:19:36,071 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:19:36,071 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:19:36,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-12 08:19:36,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:19:36,272 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:19:36,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:19:36,273 INFO L85 PathProgramCache]: Analyzing trace with hash 231500213, now seen corresponding path program 5 times [2024-11-12 08:19:36,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:19:36,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382825965] [2024-11-12 08:19:36,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:19:36,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:19:36,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:19:36,344 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:19:36,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:19:36,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382825965] [2024-11-12 08:19:36,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382825965] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:19:36,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909590735] [2024-11-12 08:19:36,345 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-12 08:19:36,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:19:36,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:19:36,346 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) [2024-11-12 08:19:36,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-12 08:19:40,668 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 08:19:40,668 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:19:40,669 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-12 08:19:40,670 INFO L279 TraceCheckSpWp]: Computing forward predicates...