./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/test-easy11.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/test-easy11.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 dd59a2dab1e1a10d8308eb629ebc6f779430a45291e09beb1ad6d6fe62d16e94 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 08:29:45,205 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 08:29:45,261 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-12 08:29:45,266 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 08:29:45,267 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 08:29:45,292 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 08:29:45,293 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 08:29:45,294 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 08:29:45,294 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 08:29:45,297 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 08:29:45,297 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 08:29:45,297 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 08:29:45,298 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 08:29:45,298 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 08:29:45,298 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 08:29:45,298 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 08:29:45,299 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 08:29:45,299 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 08:29:45,300 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 08:29:45,300 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 08:29:45,300 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 08:29:45,300 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 08:29:45,300 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 08:29:45,301 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 08:29:45,301 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 08:29:45,301 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 08:29:45,301 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 08:29:45,301 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 08:29:45,301 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 08:29:45,302 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 08:29:45,302 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 08:29:45,302 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 08:29:45,302 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 08:29:45,303 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 08:29:45,303 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 08:29:45,303 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 08:29:45,303 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 08:29:45,303 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 08:29:45,304 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 08:29:45,304 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 08:29:45,304 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 08:29:45,304 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 08:29:45,305 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dd59a2dab1e1a10d8308eb629ebc6f779430a45291e09beb1ad6d6fe62d16e94 [2024-11-12 08:29:45,512 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 08:29:45,532 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 08:29:45,534 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 08:29:45,535 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 08:29:45,535 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 08:29:45,536 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-easy11.wvr.c [2024-11-12 08:29:46,786 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 08:29:46,938 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 08:29:46,939 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy11.wvr.c [2024-11-12 08:29:46,947 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05b165dd3/7b8a2bac7813455e9331721b68aab3ab/FLAG36c7c5c30 [2024-11-12 08:29:46,960 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05b165dd3/7b8a2bac7813455e9331721b68aab3ab [2024-11-12 08:29:46,962 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 08:29:46,964 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 08:29:46,965 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 08:29:46,966 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 08:29:46,970 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 08:29:46,971 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:29:46" (1/1) ... [2024-11-12 08:29:46,972 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b04e712 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:29:46, skipping insertion in model container [2024-11-12 08:29:46,973 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:29:46" (1/1) ... [2024-11-12 08:29:46,990 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 08:29:47,184 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy11.wvr.c[1841,1854] [2024-11-12 08:29:47,188 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 08:29:47,195 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 08:29:47,210 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy11.wvr.c[1841,1854] [2024-11-12 08:29:47,211 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 08:29:47,224 INFO L204 MainTranslator]: Completed translation [2024-11-12 08:29:47,224 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:29:47 WrapperNode [2024-11-12 08:29:47,224 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 08:29:47,225 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 08:29:47,225 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 08:29:47,225 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 08:29:47,230 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:29:47" (1/1) ... [2024-11-12 08:29:47,235 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:29:47" (1/1) ... [2024-11-12 08:29:47,246 INFO L138 Inliner]: procedures = 18, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 41 [2024-11-12 08:29:47,247 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 08:29:47,247 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 08:29:47,247 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 08:29:47,247 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 08:29:47,255 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:29:47" (1/1) ... [2024-11-12 08:29:47,255 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:29:47" (1/1) ... [2024-11-12 08:29:47,256 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:29:47" (1/1) ... [2024-11-12 08:29:47,265 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 08:29:47,265 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:29:47" (1/1) ... [2024-11-12 08:29:47,265 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:29:47" (1/1) ... [2024-11-12 08:29:47,268 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:29:47" (1/1) ... [2024-11-12 08:29:47,270 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:29:47" (1/1) ... [2024-11-12 08:29:47,271 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:29:47" (1/1) ... [2024-11-12 08:29:47,272 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:29:47" (1/1) ... [2024-11-12 08:29:47,273 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 08:29:47,274 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 08:29:47,274 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 08:29:47,274 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 08:29:47,274 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:29:47" (1/1) ... [2024-11-12 08:29:47,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 08:29:47,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:29:47,306 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 08:29:47,307 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 08:29:47,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 08:29:47,340 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-12 08:29:47,340 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-12 08:29:47,341 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-12 08:29:47,341 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-12 08:29:47,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 08:29:47,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 08:29:47,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 08:29:47,343 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 08:29:47,419 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 08:29:47,420 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 08:29:47,517 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 08:29:47,518 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 08:29:47,618 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 08:29:47,618 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-12 08:29:47,619 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:29:47 BoogieIcfgContainer [2024-11-12 08:29:47,619 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 08:29:47,621 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 08:29:47,621 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 08:29:47,624 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 08:29:47,624 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:29:46" (1/3) ... [2024-11-12 08:29:47,625 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7718aa7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:29:47, skipping insertion in model container [2024-11-12 08:29:47,625 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:29:47" (2/3) ... [2024-11-12 08:29:47,625 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7718aa7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:29:47, skipping insertion in model container [2024-11-12 08:29:47,625 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:29:47" (3/3) ... [2024-11-12 08:29:47,626 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy11.wvr.c [2024-11-12 08:29:47,639 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 08:29:47,639 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-12 08:29:47,640 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 08:29:47,685 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-12 08:29:47,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 27 places, 22 transitions, 58 flow [2024-11-12 08:29:47,748 INFO L124 PetriNetUnfolderBase]: 2/20 cut-off events. [2024-11-12 08:29:47,748 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-12 08:29:47,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 20 events. 2/20 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 16 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 15. Up to 2 conditions per place. [2024-11-12 08:29:47,750 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 22 transitions, 58 flow [2024-11-12 08:29:47,753 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 19 transitions, 50 flow [2024-11-12 08:29:47,759 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 08:29:47,764 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;@3a12a604, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 08:29:47,764 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-12 08:29:47,771 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 08:29:47,771 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2024-11-12 08:29:47,771 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-12 08:29:47,772 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:29:47,773 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:29:47,776 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 08:29:47,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:29:47,782 INFO L85 PathProgramCache]: Analyzing trace with hash -414190158, now seen corresponding path program 1 times [2024-11-12 08:29:47,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:29:47,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107574619] [2024-11-12 08:29:47,789 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:29:47,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:29:47,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:29:48,235 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 08:29:48,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:29:48,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107574619] [2024-11-12 08:29:48,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107574619] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:29:48,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:29:48,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-12 08:29:48,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978195354] [2024-11-12 08:29:48,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:29:48,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 08:29:48,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:29:48,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 08:29:48,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-12 08:29:48,271 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-12 08:29:48,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 19 transitions, 50 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 08:29:48,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:29:48,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-12 08:29:48,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:29:48,591 INFO L124 PetriNetUnfolderBase]: 111/201 cut-off events. [2024-11-12 08:29:48,591 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-11-12 08:29:48,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 428 conditions, 201 events. 111/201 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 609 event pairs, 2 based on Foata normal form. 1/174 useless extension candidates. Maximal degree in co-relation 364. Up to 57 conditions per place. [2024-11-12 08:29:48,594 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 40 selfloop transitions, 10 changer transitions 10/61 dead transitions. [2024-11-12 08:29:48,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 61 transitions, 278 flow [2024-11-12 08:29:48,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 08:29:48,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-12 08:29:48,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-11-12 08:29:48,604 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-11-12 08:29:48,605 INFO L175 Difference]: Start difference. First operand has 24 places, 19 transitions, 50 flow. Second operand 9 states and 88 transitions. [2024-11-12 08:29:48,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 61 transitions, 278 flow [2024-11-12 08:29:48,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 61 transitions, 254 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-12 08:29:48,611 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 107 flow [2024-11-12 08:29:48,612 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=107, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2024-11-12 08:29:48,616 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 10 predicate places. [2024-11-12 08:29:48,616 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 107 flow [2024-11-12 08:29:48,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 08:29:48,617 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:29:48,617 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:29:48,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 08:29:48,618 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 08:29:48,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:29:48,619 INFO L85 PathProgramCache]: Analyzing trace with hash -349033444, now seen corresponding path program 2 times [2024-11-12 08:29:48,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:29:48,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104085800] [2024-11-12 08:29:48,620 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:29:48,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:29:48,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:29:48,781 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 08:29:48,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:29:48,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104085800] [2024-11-12 08:29:48,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104085800] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:29:48,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:29:48,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-12 08:29:48,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444035285] [2024-11-12 08:29:48,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:29:48,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 08:29:48,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:29:48,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 08:29:48,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-12 08:29:48,792 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-12 08:29:48,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 107 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 08:29:48,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:29:48,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-12 08:29:48,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:29:49,021 INFO L124 PetriNetUnfolderBase]: 114/208 cut-off events. [2024-11-12 08:29:49,021 INFO L125 PetriNetUnfolderBase]: For 96/96 co-relation queries the response was YES. [2024-11-12 08:29:49,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 588 conditions, 208 events. 114/208 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 600 event pairs, 15 based on Foata normal form. 1/198 useless extension candidates. Maximal degree in co-relation 575. Up to 115 conditions per place. [2024-11-12 08:29:49,023 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 34 selfloop transitions, 14 changer transitions 10/59 dead transitions. [2024-11-12 08:29:49,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 59 transitions, 336 flow [2024-11-12 08:29:49,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 08:29:49,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-12 08:29:49,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 83 transitions. [2024-11-12 08:29:49,025 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41919191919191917 [2024-11-12 08:29:49,025 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 107 flow. Second operand 9 states and 83 transitions. [2024-11-12 08:29:49,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 59 transitions, 336 flow [2024-11-12 08:29:49,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 59 transitions, 324 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-12 08:29:49,030 INFO L231 Difference]: Finished difference. Result has 43 places, 35 transitions, 190 flow [2024-11-12 08:29:49,030 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=190, PETRI_PLACES=43, PETRI_TRANSITIONS=35} [2024-11-12 08:29:49,030 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 19 predicate places. [2024-11-12 08:29:49,030 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 35 transitions, 190 flow [2024-11-12 08:29:49,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 08:29:49,031 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:29:49,031 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:29:49,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 08:29:49,031 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 08:29:49,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:29:49,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1600878094, now seen corresponding path program 3 times [2024-11-12 08:29:49,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:29:49,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822821018] [2024-11-12 08:29:49,033 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:29:49,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:29:49,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:29:49,152 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 08:29:49,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:29:49,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822821018] [2024-11-12 08:29:49,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822821018] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:29:49,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:29:49,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-12 08:29:49,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039582182] [2024-11-12 08:29:49,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:29:49,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 08:29:49,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:29:49,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 08:29:49,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-12 08:29:49,156 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-12 08:29:49,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 190 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 08:29:49,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:29:49,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-12 08:29:49,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:29:49,367 INFO L124 PetriNetUnfolderBase]: 120/218 cut-off events. [2024-11-12 08:29:49,367 INFO L125 PetriNetUnfolderBase]: For 205/205 co-relation queries the response was YES. [2024-11-12 08:29:49,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 715 conditions, 218 events. 120/218 cut-off events. For 205/205 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 676 event pairs, 10 based on Foata normal form. 1/219 useless extension candidates. Maximal degree in co-relation 698. Up to 119 conditions per place. [2024-11-12 08:29:49,369 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 39 selfloop transitions, 18 changer transitions 10/68 dead transitions. [2024-11-12 08:29:49,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 68 transitions, 457 flow [2024-11-12 08:29:49,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 08:29:49,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-12 08:29:49,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2024-11-12 08:29:49,371 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-11-12 08:29:49,371 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 190 flow. Second operand 9 states and 87 transitions. [2024-11-12 08:29:49,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 68 transitions, 457 flow [2024-11-12 08:29:49,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 68 transitions, 422 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-11-12 08:29:49,374 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 256 flow [2024-11-12 08:29:49,374 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=256, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2024-11-12 08:29:49,374 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 25 predicate places. [2024-11-12 08:29:49,375 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 256 flow [2024-11-12 08:29:49,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 08:29:49,375 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:29:49,375 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:29:49,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 08:29:49,375 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 08:29:49,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:29:49,376 INFO L85 PathProgramCache]: Analyzing trace with hash -2082667952, now seen corresponding path program 4 times [2024-11-12 08:29:49,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:29:49,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128700543] [2024-11-12 08:29:49,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:29:49,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:29:49,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:29:49,470 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 08:29:49,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:29:49,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128700543] [2024-11-12 08:29:49,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128700543] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:29:49,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:29:49,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-12 08:29:49,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52619002] [2024-11-12 08:29:49,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:29:49,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 08:29:49,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:29:49,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 08:29:49,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-12 08:29:49,480 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-12 08:29:49,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 256 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 08:29:49,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:29:49,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-12 08:29:49,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:29:49,668 INFO L124 PetriNetUnfolderBase]: 140/247 cut-off events. [2024-11-12 08:29:49,669 INFO L125 PetriNetUnfolderBase]: For 431/431 co-relation queries the response was YES. [2024-11-12 08:29:49,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 904 conditions, 247 events. 140/247 cut-off events. For 431/431 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 735 event pairs, 20 based on Foata normal form. 1/248 useless extension candidates. Maximal degree in co-relation 886. Up to 129 conditions per place. [2024-11-12 08:29:49,671 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 36 selfloop transitions, 26 changer transitions 9/72 dead transitions. [2024-11-12 08:29:49,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 72 transitions, 570 flow [2024-11-12 08:29:49,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 08:29:49,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-12 08:29:49,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 85 transitions. [2024-11-12 08:29:49,676 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4292929292929293 [2024-11-12 08:29:49,677 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 256 flow. Second operand 9 states and 85 transitions. [2024-11-12 08:29:49,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 72 transitions, 570 flow [2024-11-12 08:29:49,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 72 transitions, 510 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-11-12 08:29:49,681 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 392 flow [2024-11-12 08:29:49,682 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=392, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2024-11-12 08:29:49,683 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 30 predicate places. [2024-11-12 08:29:49,684 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 392 flow [2024-11-12 08:29:49,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 08:29:49,684 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:29:49,684 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:29:49,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 08:29:49,685 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 08:29:49,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:29:49,686 INFO L85 PathProgramCache]: Analyzing trace with hash 351115436, now seen corresponding path program 5 times [2024-11-12 08:29:49,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:29:49,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209521777] [2024-11-12 08:29:49,687 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:29:49,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:29:49,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:29:49,810 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 08:29:49,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:29:49,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209521777] [2024-11-12 08:29:49,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209521777] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:29:49,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:29:49,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-12 08:29:49,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400211289] [2024-11-12 08:29:49,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:29:49,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 08:29:49,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:29:49,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 08:29:49,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-12 08:29:49,814 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-12 08:29:49,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 392 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 08:29:49,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:29:49,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-12 08:29:49,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:29:50,011 INFO L124 PetriNetUnfolderBase]: 149/262 cut-off events. [2024-11-12 08:29:50,012 INFO L125 PetriNetUnfolderBase]: For 605/605 co-relation queries the response was YES. [2024-11-12 08:29:50,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1048 conditions, 262 events. 149/262 cut-off events. For 605/605 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 844 event pairs, 11 based on Foata normal form. 1/263 useless extension candidates. Maximal degree in co-relation 1027. Up to 132 conditions per place. [2024-11-12 08:29:50,015 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 48 selfloop transitions, 25 changer transitions 10/84 dead transitions. [2024-11-12 08:29:50,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 84 transitions, 714 flow [2024-11-12 08:29:50,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 08:29:50,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-12 08:29:50,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-11-12 08:29:50,017 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-11-12 08:29:50,017 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 392 flow. Second operand 9 states and 90 transitions. [2024-11-12 08:29:50,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 84 transitions, 714 flow [2024-11-12 08:29:50,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 84 transitions, 669 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-11-12 08:29:50,023 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 424 flow [2024-11-12 08:29:50,023 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=424, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2024-11-12 08:29:50,025 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 35 predicate places. [2024-11-12 08:29:50,025 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 424 flow [2024-11-12 08:29:50,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 08:29:50,026 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:29:50,026 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:29:50,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-12 08:29:50,027 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 08:29:50,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:29:50,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1223861144, now seen corresponding path program 6 times [2024-11-12 08:29:50,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:29:50,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028992733] [2024-11-12 08:29:50,028 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:29:50,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:29:50,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:29:50,152 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 08:29:50,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:29:50,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028992733] [2024-11-12 08:29:50,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028992733] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:29:50,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:29:50,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-12 08:29:50,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94549630] [2024-11-12 08:29:50,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:29:50,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 08:29:50,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:29:50,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 08:29:50,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-12 08:29:50,168 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-12 08:29:50,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 52 transitions, 424 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 08:29:50,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:29:50,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-12 08:29:50,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:29:50,354 INFO L124 PetriNetUnfolderBase]: 167/290 cut-off events. [2024-11-12 08:29:50,354 INFO L125 PetriNetUnfolderBase]: For 874/874 co-relation queries the response was YES. [2024-11-12 08:29:50,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1265 conditions, 290 events. 167/290 cut-off events. For 874/874 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 957 event pairs, 12 based on Foata normal form. 1/291 useless extension candidates. Maximal degree in co-relation 1243. Up to 149 conditions per place. [2024-11-12 08:29:50,356 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 43 selfloop transitions, 33 changer transitions 10/87 dead transitions. [2024-11-12 08:29:50,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 87 transitions, 821 flow [2024-11-12 08:29:50,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 08:29:50,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-12 08:29:50,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2024-11-12 08:29:50,357 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-11-12 08:29:50,357 INFO L175 Difference]: Start difference. First operand has 59 places, 52 transitions, 424 flow. Second operand 9 states and 87 transitions. [2024-11-12 08:29:50,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 87 transitions, 821 flow [2024-11-12 08:29:50,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 87 transitions, 743 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-11-12 08:29:50,361 INFO L231 Difference]: Finished difference. Result has 63 places, 63 transitions, 588 flow [2024-11-12 08:29:50,361 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=588, PETRI_PLACES=63, PETRI_TRANSITIONS=63} [2024-11-12 08:29:50,361 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 39 predicate places. [2024-11-12 08:29:50,361 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 63 transitions, 588 flow [2024-11-12 08:29:50,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 08:29:50,362 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:29:50,362 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:29:50,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 08:29:50,362 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 08:29:50,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:29:50,363 INFO L85 PathProgramCache]: Analyzing trace with hash -2081327682, now seen corresponding path program 7 times [2024-11-12 08:29:50,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:29:50,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705350400] [2024-11-12 08:29:50,363 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:29:50,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:29:50,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:29:50,446 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 08:29:50,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:29:50,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705350400] [2024-11-12 08:29:50,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705350400] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:29:50,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:29:50,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-12 08:29:50,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160244575] [2024-11-12 08:29:50,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:29:50,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 08:29:50,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:29:50,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 08:29:50,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-12 08:29:50,450 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-12 08:29:50,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 63 transitions, 588 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 08:29:50,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:29:50,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-12 08:29:50,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:29:50,615 INFO L124 PetriNetUnfolderBase]: 164/286 cut-off events. [2024-11-12 08:29:50,615 INFO L125 PetriNetUnfolderBase]: For 1075/1075 co-relation queries the response was YES. [2024-11-12 08:29:50,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1339 conditions, 286 events. 164/286 cut-off events. For 1075/1075 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 952 event pairs, 14 based on Foata normal form. 1/287 useless extension candidates. Maximal degree in co-relation 1314. Up to 147 conditions per place. [2024-11-12 08:29:50,617 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 51 selfloop transitions, 29 changer transitions 11/92 dead transitions. [2024-11-12 08:29:50,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 92 transitions, 937 flow [2024-11-12 08:29:50,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 08:29:50,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-12 08:29:50,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 85 transitions. [2024-11-12 08:29:50,618 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4292929292929293 [2024-11-12 08:29:50,618 INFO L175 Difference]: Start difference. First operand has 63 places, 63 transitions, 588 flow. Second operand 9 states and 85 transitions. [2024-11-12 08:29:50,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 92 transitions, 937 flow [2024-11-12 08:29:50,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 92 transitions, 857 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-11-12 08:29:50,623 INFO L231 Difference]: Finished difference. Result has 67 places, 61 transitions, 569 flow [2024-11-12 08:29:50,623 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=569, PETRI_PLACES=67, PETRI_TRANSITIONS=61} [2024-11-12 08:29:50,623 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 43 predicate places. [2024-11-12 08:29:50,624 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 61 transitions, 569 flow [2024-11-12 08:29:50,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 08:29:50,624 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:29:50,624 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:29:50,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-12 08:29:50,624 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 08:29:50,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:29:50,625 INFO L85 PathProgramCache]: Analyzing trace with hash 509328288, now seen corresponding path program 8 times [2024-11-12 08:29:50,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:29:50,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497038742] [2024-11-12 08:29:50,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:29:50,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:29:50,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:29:50,731 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 08:29:50,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:29:50,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497038742] [2024-11-12 08:29:50,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497038742] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:29:50,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:29:50,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-12 08:29:50,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349263939] [2024-11-12 08:29:50,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:29:50,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 08:29:50,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:29:50,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 08:29:50,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-12 08:29:50,737 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-12 08:29:50,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 61 transitions, 569 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 08:29:50,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:29:50,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-12 08:29:50,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:29:50,910 INFO L124 PetriNetUnfolderBase]: 177/308 cut-off events. [2024-11-12 08:29:50,911 INFO L125 PetriNetUnfolderBase]: For 1061/1061 co-relation queries the response was YES. [2024-11-12 08:29:50,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1368 conditions, 308 events. 177/308 cut-off events. For 1061/1061 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1060 event pairs, 10 based on Foata normal form. 1/309 useless extension candidates. Maximal degree in co-relation 1343. Up to 153 conditions per place. [2024-11-12 08:29:50,913 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 46 selfloop transitions, 34 changer transitions 10/91 dead transitions. [2024-11-12 08:29:50,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 91 transitions, 894 flow [2024-11-12 08:29:50,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 08:29:50,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-12 08:29:50,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 91 transitions. [2024-11-12 08:29:50,914 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4595959595959596 [2024-11-12 08:29:50,914 INFO L175 Difference]: Start difference. First operand has 67 places, 61 transitions, 569 flow. Second operand 9 states and 91 transitions. [2024-11-12 08:29:50,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 91 transitions, 894 flow [2024-11-12 08:29:50,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 91 transitions, 830 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-11-12 08:29:50,918 INFO L231 Difference]: Finished difference. Result has 68 places, 65 transitions, 633 flow [2024-11-12 08:29:50,918 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=633, PETRI_PLACES=68, PETRI_TRANSITIONS=65} [2024-11-12 08:29:50,920 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 44 predicate places. [2024-11-12 08:29:50,920 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 65 transitions, 633 flow [2024-11-12 08:29:50,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 08:29:50,921 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:29:50,921 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:29:50,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-12 08:29:50,922 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 08:29:50,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:29:50,923 INFO L85 PathProgramCache]: Analyzing trace with hash 728919340, now seen corresponding path program 9 times [2024-11-12 08:29:50,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:29:50,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453262733] [2024-11-12 08:29:50,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:29:50,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:29:50,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:29:51,022 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 08:29:51,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:29:51,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453262733] [2024-11-12 08:29:51,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453262733] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:29:51,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:29:51,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-12 08:29:51,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988754670] [2024-11-12 08:29:51,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:29:51,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 08:29:51,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:29:51,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 08:29:51,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-12 08:29:51,028 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-12 08:29:51,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 633 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 08:29:51,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:29:51,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-12 08:29:51,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:29:51,189 INFO L124 PetriNetUnfolderBase]: 167/293 cut-off events. [2024-11-12 08:29:51,189 INFO L125 PetriNetUnfolderBase]: For 1213/1213 co-relation queries the response was YES. [2024-11-12 08:29:51,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1389 conditions, 293 events. 167/293 cut-off events. For 1213/1213 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 989 event pairs, 12 based on Foata normal form. 1/294 useless extension candidates. Maximal degree in co-relation 1362. Up to 155 conditions per place. [2024-11-12 08:29:51,191 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 44 selfloop transitions, 32 changer transitions 10/87 dead transitions. [2024-11-12 08:29:51,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 87 transitions, 904 flow [2024-11-12 08:29:51,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 08:29:51,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-12 08:29:51,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-11-12 08:29:51,192 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-11-12 08:29:51,192 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 633 flow. Second operand 9 states and 88 transitions. [2024-11-12 08:29:51,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 87 transitions, 904 flow [2024-11-12 08:29:51,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 87 transitions, 837 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-11-12 08:29:51,196 INFO L231 Difference]: Finished difference. Result has 71 places, 64 transitions, 632 flow [2024-11-12 08:29:51,197 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=632, PETRI_PLACES=71, PETRI_TRANSITIONS=64} [2024-11-12 08:29:51,197 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 47 predicate places. [2024-11-12 08:29:51,197 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 64 transitions, 632 flow [2024-11-12 08:29:51,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 08:29:51,197 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:29:51,198 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:29:51,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-12 08:29:51,198 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 08:29:51,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:29:51,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1707293348, now seen corresponding path program 10 times [2024-11-12 08:29:51,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:29:51,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048904892] [2024-11-12 08:29:51,199 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:29:51,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:29:51,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:29:51,292 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 08:29:51,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:29:51,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048904892] [2024-11-12 08:29:51,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048904892] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:29:51,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:29:51,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-12 08:29:51,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911650557] [2024-11-12 08:29:51,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:29:51,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 08:29:51,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:29:51,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 08:29:51,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-12 08:29:51,298 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-12 08:29:51,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 64 transitions, 632 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 08:29:51,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:29:51,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-12 08:29:51,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:29:51,464 INFO L124 PetriNetUnfolderBase]: 164/289 cut-off events. [2024-11-12 08:29:51,464 INFO L125 PetriNetUnfolderBase]: For 1177/1177 co-relation queries the response was YES. [2024-11-12 08:29:51,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1345 conditions, 289 events. 164/289 cut-off events. For 1177/1177 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 974 event pairs, 12 based on Foata normal form. 1/290 useless extension candidates. Maximal degree in co-relation 1318. Up to 153 conditions per place. [2024-11-12 08:29:51,466 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 43 selfloop transitions, 30 changer transitions 11/85 dead transitions. [2024-11-12 08:29:51,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 85 transitions, 888 flow [2024-11-12 08:29:51,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 08:29:51,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-12 08:29:51,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2024-11-12 08:29:51,467 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2024-11-12 08:29:51,467 INFO L175 Difference]: Start difference. First operand has 71 places, 64 transitions, 632 flow. Second operand 9 states and 86 transitions. [2024-11-12 08:29:51,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 85 transitions, 888 flow [2024-11-12 08:29:51,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 85 transitions, 816 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-11-12 08:29:51,471 INFO L231 Difference]: Finished difference. Result has 73 places, 62 transitions, 599 flow [2024-11-12 08:29:51,471 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=599, PETRI_PLACES=73, PETRI_TRANSITIONS=62} [2024-11-12 08:29:51,472 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 49 predicate places. [2024-11-12 08:29:51,472 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 62 transitions, 599 flow [2024-11-12 08:29:51,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 08:29:51,472 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:29:51,472 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:29:51,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-12 08:29:51,473 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:29:51,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:29:51,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1172063546, now seen corresponding path program 11 times [2024-11-12 08:29:51,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:29:51,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339523250] [2024-11-12 08:29:51,473 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:29:51,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:29:51,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:29:51,560 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 08:29:51,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:29:51,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339523250] [2024-11-12 08:29:51,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339523250] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:29:51,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:29:51,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-12 08:29:51,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130881118] [2024-11-12 08:29:51,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:29:51,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 08:29:51,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:29:51,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 08:29:51,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-12 08:29:51,564 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-12 08:29:51,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 62 transitions, 599 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 08:29:51,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:29:51,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-12 08:29:51,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:29:51,729 INFO L124 PetriNetUnfolderBase]: 161/284 cut-off events. [2024-11-12 08:29:51,729 INFO L125 PetriNetUnfolderBase]: For 1144/1144 co-relation queries the response was YES. [2024-11-12 08:29:51,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1306 conditions, 284 events. 161/284 cut-off events. For 1144/1144 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 944 event pairs, 14 based on Foata normal form. 1/285 useless extension candidates. Maximal degree in co-relation 1278. Up to 151 conditions per place. [2024-11-12 08:29:51,731 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 43 selfloop transitions, 28 changer transitions 11/83 dead transitions. [2024-11-12 08:29:51,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 83 transitions, 853 flow [2024-11-12 08:29:51,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 08:29:51,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-12 08:29:51,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 84 transitions. [2024-11-12 08:29:51,732 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-11-12 08:29:51,732 INFO L175 Difference]: Start difference. First operand has 73 places, 62 transitions, 599 flow. Second operand 9 states and 84 transitions. [2024-11-12 08:29:51,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 83 transitions, 853 flow [2024-11-12 08:29:51,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 83 transitions, 785 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-11-12 08:29:51,737 INFO L231 Difference]: Finished difference. Result has 72 places, 60 transitions, 567 flow [2024-11-12 08:29:51,738 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=567, PETRI_PLACES=72, PETRI_TRANSITIONS=60} [2024-11-12 08:29:51,739 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 48 predicate places. [2024-11-12 08:29:51,739 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 60 transitions, 567 flow [2024-11-12 08:29:51,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 08:29:51,739 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:29:51,739 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:29:51,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-12 08:29:51,739 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:29:51,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:29:51,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1257476776, now seen corresponding path program 12 times [2024-11-12 08:29:51,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:29:51,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930743251] [2024-11-12 08:29:51,740 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:29:51,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:29:51,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:29:51,836 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 08:29:51,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:29:51,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930743251] [2024-11-12 08:29:51,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930743251] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:29:51,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:29:51,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-12 08:29:51,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924907460] [2024-11-12 08:29:51,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:29:51,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 08:29:51,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:29:51,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 08:29:51,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-12 08:29:51,840 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-12 08:29:51,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 60 transitions, 567 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 08:29:51,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:29:51,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-12 08:29:51,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:29:51,996 INFO L124 PetriNetUnfolderBase]: 166/291 cut-off events. [2024-11-12 08:29:51,997 INFO L125 PetriNetUnfolderBase]: For 1148/1148 co-relation queries the response was YES. [2024-11-12 08:29:51,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1316 conditions, 291 events. 166/291 cut-off events. For 1148/1148 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 969 event pairs, 12 based on Foata normal form. 1/292 useless extension candidates. Maximal degree in co-relation 1288. Up to 153 conditions per place. [2024-11-12 08:29:51,998 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 45 selfloop transitions, 29 changer transitions 9/84 dead transitions. [2024-11-12 08:29:51,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 84 transitions, 841 flow [2024-11-12 08:29:51,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 08:29:51,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-12 08:29:52,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 85 transitions. [2024-11-12 08:29:52,000 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4292929292929293 [2024-11-12 08:29:52,000 INFO L175 Difference]: Start difference. First operand has 72 places, 60 transitions, 567 flow. Second operand 9 states and 85 transitions. [2024-11-12 08:29:52,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 84 transitions, 841 flow [2024-11-12 08:29:52,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 84 transitions, 779 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-11-12 08:29:52,004 INFO L231 Difference]: Finished difference. Result has 72 places, 61 transitions, 587 flow [2024-11-12 08:29:52,005 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=587, PETRI_PLACES=72, PETRI_TRANSITIONS=61} [2024-11-12 08:29:52,005 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 48 predicate places. [2024-11-12 08:29:52,005 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 61 transitions, 587 flow [2024-11-12 08:29:52,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 08:29:52,006 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:29:52,006 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:29:52,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-12 08:29:52,006 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:29:52,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:29:52,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1620292040, now seen corresponding path program 13 times [2024-11-12 08:29:52,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:29:52,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302402597] [2024-11-12 08:29:52,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:29:52,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:29:52,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:29:52,090 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 08:29:52,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:29:52,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302402597] [2024-11-12 08:29:52,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302402597] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:29:52,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:29:52,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-12 08:29:52,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258103219] [2024-11-12 08:29:52,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:29:52,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 08:29:52,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:29:52,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 08:29:52,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-12 08:29:52,094 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-12 08:29:52,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 61 transitions, 587 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 08:29:52,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:29:52,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-12 08:29:52,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:29:52,252 INFO L124 PetriNetUnfolderBase]: 162/287 cut-off events. [2024-11-12 08:29:52,252 INFO L125 PetriNetUnfolderBase]: For 1275/1275 co-relation queries the response was YES. [2024-11-12 08:29:52,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1329 conditions, 287 events. 162/287 cut-off events. For 1275/1275 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 934 event pairs, 14 based on Foata normal form. 1/288 useless extension candidates. Maximal degree in co-relation 1300. Up to 157 conditions per place. [2024-11-12 08:29:52,254 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 43 selfloop transitions, 30 changer transitions 9/83 dead transitions. [2024-11-12 08:29:52,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 83 transitions, 874 flow [2024-11-12 08:29:52,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 08:29:52,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-12 08:29:52,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 84 transitions. [2024-11-12 08:29:52,255 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-11-12 08:29:52,255 INFO L175 Difference]: Start difference. First operand has 72 places, 61 transitions, 587 flow. Second operand 9 states and 84 transitions. [2024-11-12 08:29:52,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 83 transitions, 874 flow [2024-11-12 08:29:52,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 83 transitions, 800 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-11-12 08:29:52,260 INFO L231 Difference]: Finished difference. Result has 75 places, 63 transitions, 622 flow [2024-11-12 08:29:52,260 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=515, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=622, PETRI_PLACES=75, PETRI_TRANSITIONS=63} [2024-11-12 08:29:52,261 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 51 predicate places. [2024-11-12 08:29:52,261 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 63 transitions, 622 flow [2024-11-12 08:29:52,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 08:29:52,261 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:29:52,261 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:29:52,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-12 08:29:52,262 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:29:52,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:29:52,262 INFO L85 PathProgramCache]: Analyzing trace with hash -400831042, now seen corresponding path program 14 times [2024-11-12 08:29:52,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:29:52,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585011337] [2024-11-12 08:29:52,263 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:29:52,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:29:52,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:29:52,343 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 08:29:52,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:29:52,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585011337] [2024-11-12 08:29:52,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585011337] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:29:52,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:29:52,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-12 08:29:52,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892173034] [2024-11-12 08:29:52,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:29:52,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 08:29:52,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:29:52,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 08:29:52,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-12 08:29:52,351 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-12 08:29:52,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 63 transitions, 622 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 08:29:52,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:29:52,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-12 08:29:52,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:29:52,509 INFO L124 PetriNetUnfolderBase]: 160/285 cut-off events. [2024-11-12 08:29:52,509 INFO L125 PetriNetUnfolderBase]: For 1291/1291 co-relation queries the response was YES. [2024-11-12 08:29:52,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1331 conditions, 285 events. 160/285 cut-off events. For 1291/1291 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 936 event pairs, 18 based on Foata normal form. 1/286 useless extension candidates. Maximal degree in co-relation 1300. Up to 155 conditions per place. [2024-11-12 08:29:52,511 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 48 selfloop transitions, 24 changer transitions 11/84 dead transitions. [2024-11-12 08:29:52,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 84 transitions, 913 flow [2024-11-12 08:29:52,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 08:29:52,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-12 08:29:52,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 81 transitions. [2024-11-12 08:29:52,512 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-11-12 08:29:52,512 INFO L175 Difference]: Start difference. First operand has 75 places, 63 transitions, 622 flow. Second operand 9 states and 81 transitions. [2024-11-12 08:29:52,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 84 transitions, 913 flow [2024-11-12 08:29:52,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 84 transitions, 860 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-11-12 08:29:52,516 INFO L231 Difference]: Finished difference. Result has 78 places, 61 transitions, 597 flow [2024-11-12 08:29:52,516 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=597, PETRI_PLACES=78, PETRI_TRANSITIONS=61} [2024-11-12 08:29:52,517 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 54 predicate places. [2024-11-12 08:29:52,517 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 61 transitions, 597 flow [2024-11-12 08:29:52,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 08:29:52,517 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:29:52,517 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:29:52,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-12 08:29:52,517 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:29:52,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:29:52,518 INFO L85 PathProgramCache]: Analyzing trace with hash -420390402, now seen corresponding path program 15 times [2024-11-12 08:29:52,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:29:52,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864589362] [2024-11-12 08:29:52,518 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:29:52,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:29:52,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:29:52,606 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 08:29:52,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:29:52,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864589362] [2024-11-12 08:29:52,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864589362] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:29:52,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:29:52,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-12 08:29:52,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537670611] [2024-11-12 08:29:52,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:29:52,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 08:29:52,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:29:52,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 08:29:52,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-12 08:29:52,610 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-12 08:29:52,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 61 transitions, 597 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 08:29:52,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:29:52,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-12 08:29:52,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:29:52,758 INFO L124 PetriNetUnfolderBase]: 165/292 cut-off events. [2024-11-12 08:29:52,759 INFO L125 PetriNetUnfolderBase]: For 1319/1319 co-relation queries the response was YES. [2024-11-12 08:29:52,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1351 conditions, 292 events. 165/292 cut-off events. For 1319/1319 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 958 event pairs, 11 based on Foata normal form. 1/293 useless extension candidates. Maximal degree in co-relation 1320. Up to 111 conditions per place. [2024-11-12 08:29:52,761 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 51 selfloop transitions, 25 changer transitions 9/86 dead transitions. [2024-11-12 08:29:52,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 86 transitions, 916 flow [2024-11-12 08:29:52,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 08:29:52,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-12 08:29:52,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 81 transitions. [2024-11-12 08:29:52,762 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-11-12 08:29:52,762 INFO L175 Difference]: Start difference. First operand has 78 places, 61 transitions, 597 flow. Second operand 9 states and 81 transitions. [2024-11-12 08:29:52,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 86 transitions, 916 flow [2024-11-12 08:29:52,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 86 transitions, 862 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-11-12 08:29:52,766 INFO L231 Difference]: Finished difference. Result has 77 places, 62 transitions, 617 flow [2024-11-12 08:29:52,767 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=545, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=617, PETRI_PLACES=77, PETRI_TRANSITIONS=62} [2024-11-12 08:29:52,767 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 53 predicate places. [2024-11-12 08:29:52,767 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 62 transitions, 617 flow [2024-11-12 08:29:52,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 08:29:52,767 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:29:52,768 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:29:52,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-12 08:29:52,771 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:29:52,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:29:52,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1464595932, now seen corresponding path program 16 times [2024-11-12 08:29:52,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:29:52,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852534727] [2024-11-12 08:29:52,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:29:52,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:29:52,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:29:52,844 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 08:29:52,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:29:52,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852534727] [2024-11-12 08:29:52,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852534727] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:29:52,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:29:52,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-12 08:29:52,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286230130] [2024-11-12 08:29:52,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:29:52,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 08:29:52,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:29:52,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 08:29:52,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-12 08:29:52,848 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-12 08:29:52,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 62 transitions, 617 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 08:29:52,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:29:52,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-12 08:29:52,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:29:53,009 INFO L124 PetriNetUnfolderBase]: 169/300 cut-off events. [2024-11-12 08:29:53,010 INFO L125 PetriNetUnfolderBase]: For 1528/1528 co-relation queries the response was YES. [2024-11-12 08:29:53,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1423 conditions, 300 events. 169/300 cut-off events. For 1528/1528 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1003 event pairs, 19 based on Foata normal form. 1/301 useless extension candidates. Maximal degree in co-relation 1392. Up to 165 conditions per place. [2024-11-12 08:29:53,012 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 51 selfloop transitions, 25 changer transitions 9/86 dead transitions. [2024-11-12 08:29:53,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 86 transitions, 944 flow [2024-11-12 08:29:53,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 08:29:53,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-12 08:29:53,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 82 transitions. [2024-11-12 08:29:53,013 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41414141414141414 [2024-11-12 08:29:53,013 INFO L175 Difference]: Start difference. First operand has 77 places, 62 transitions, 617 flow. Second operand 9 states and 82 transitions. [2024-11-12 08:29:53,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 86 transitions, 944 flow [2024-11-12 08:29:53,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 86 transitions, 862 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-11-12 08:29:53,018 INFO L231 Difference]: Finished difference. Result has 79 places, 63 transitions, 616 flow [2024-11-12 08:29:53,018 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=616, PETRI_PLACES=79, PETRI_TRANSITIONS=63} [2024-11-12 08:29:53,018 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 55 predicate places. [2024-11-12 08:29:53,018 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 63 transitions, 616 flow [2024-11-12 08:29:53,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 08:29:53,019 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:29:53,019 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:29:53,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-12 08:29:53,019 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:29:53,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:29:53,019 INFO L85 PathProgramCache]: Analyzing trace with hash -2030870354, now seen corresponding path program 17 times [2024-11-12 08:29:53,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:29:53,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098366040] [2024-11-12 08:29:53,020 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:29:53,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:29:53,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:29:53,098 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 08:29:53,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:29:53,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098366040] [2024-11-12 08:29:53,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098366040] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:29:53,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:29:53,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-12 08:29:53,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908091016] [2024-11-12 08:29:53,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:29:53,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 08:29:53,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:29:53,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 08:29:53,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-12 08:29:53,101 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-12 08:29:53,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 63 transitions, 616 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 08:29:53,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:29:53,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-12 08:29:53,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:29:53,261 INFO L124 PetriNetUnfolderBase]: 166/298 cut-off events. [2024-11-12 08:29:53,261 INFO L125 PetriNetUnfolderBase]: For 1475/1475 co-relation queries the response was YES. [2024-11-12 08:29:53,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1373 conditions, 298 events. 166/298 cut-off events. For 1475/1475 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1020 event pairs, 21 based on Foata normal form. 1/299 useless extension candidates. Maximal degree in co-relation 1342. Up to 169 conditions per place. [2024-11-12 08:29:53,263 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 44 selfloop transitions, 26 changer transitions 12/83 dead transitions. [2024-11-12 08:29:53,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 83 transitions, 881 flow [2024-11-12 08:29:53,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 08:29:53,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-12 08:29:53,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 85 transitions. [2024-11-12 08:29:53,264 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4292929292929293 [2024-11-12 08:29:53,264 INFO L175 Difference]: Start difference. First operand has 79 places, 63 transitions, 616 flow. Second operand 9 states and 85 transitions. [2024-11-12 08:29:53,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 83 transitions, 881 flow [2024-11-12 08:29:53,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 83 transitions, 813 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-11-12 08:29:53,268 INFO L231 Difference]: Finished difference. Result has 80 places, 61 transitions, 579 flow [2024-11-12 08:29:53,268 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=579, PETRI_PLACES=80, PETRI_TRANSITIONS=61} [2024-11-12 08:29:53,268 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 56 predicate places. [2024-11-12 08:29:53,268 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 61 transitions, 579 flow [2024-11-12 08:29:53,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 08:29:53,269 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:29:53,269 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:29:53,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-12 08:29:53,269 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:29:53,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:29:53,269 INFO L85 PathProgramCache]: Analyzing trace with hash -217240978, now seen corresponding path program 18 times [2024-11-12 08:29:53,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:29:53,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450921636] [2024-11-12 08:29:53,270 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:29:53,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:29:53,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:29:53,358 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 08:29:53,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:29:53,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450921636] [2024-11-12 08:29:53,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450921636] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:29:53,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:29:53,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-12 08:29:53,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901120759] [2024-11-12 08:29:53,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:29:53,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 08:29:53,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:29:53,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 08:29:53,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-12 08:29:53,361 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-12 08:29:53,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 61 transitions, 579 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 08:29:53,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:29:53,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-12 08:29:53,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:29:53,526 INFO L124 PetriNetUnfolderBase]: 170/303 cut-off events. [2024-11-12 08:29:53,526 INFO L125 PetriNetUnfolderBase]: For 1559/1559 co-relation queries the response was YES. [2024-11-12 08:29:53,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1376 conditions, 303 events. 170/303 cut-off events. For 1559/1559 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1022 event pairs, 17 based on Foata normal form. 1/304 useless extension candidates. Maximal degree in co-relation 1345. Up to 171 conditions per place. [2024-11-12 08:29:53,528 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 46 selfloop transitions, 27 changer transitions 9/83 dead transitions. [2024-11-12 08:29:53,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 83 transitions, 871 flow [2024-11-12 08:29:53,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 08:29:53,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-12 08:29:53,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 85 transitions. [2024-11-12 08:29:53,529 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4292929292929293 [2024-11-12 08:29:53,529 INFO L175 Difference]: Start difference. First operand has 80 places, 61 transitions, 579 flow. Second operand 9 states and 85 transitions. [2024-11-12 08:29:53,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 83 transitions, 871 flow [2024-11-12 08:29:53,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 83 transitions, 813 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-11-12 08:29:53,533 INFO L231 Difference]: Finished difference. Result has 80 places, 62 transitions, 603 flow [2024-11-12 08:29:53,534 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=603, PETRI_PLACES=80, PETRI_TRANSITIONS=62} [2024-11-12 08:29:53,534 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 56 predicate places. [2024-11-12 08:29:53,534 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 62 transitions, 603 flow [2024-11-12 08:29:53,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 08:29:53,534 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:29:53,534 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:29:53,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-12 08:29:53,535 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:29:53,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:29:53,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1495640552, now seen corresponding path program 19 times [2024-11-12 08:29:53,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:29:53,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895637781] [2024-11-12 08:29:53,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:29:53,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:29:53,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:29:53,607 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 08:29:53,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:29:53,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895637781] [2024-11-12 08:29:53,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895637781] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:29:53,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:29:53,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-12 08:29:53,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692581881] [2024-11-12 08:29:53,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:29:53,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 08:29:53,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:29:53,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 08:29:53,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-12 08:29:53,611 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-12 08:29:53,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 62 transitions, 603 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 08:29:53,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:29:53,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-12 08:29:53,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:29:53,804 INFO L124 PetriNetUnfolderBase]: 167/301 cut-off events. [2024-11-12 08:29:53,804 INFO L125 PetriNetUnfolderBase]: For 1664/1664 co-relation queries the response was YES. [2024-11-12 08:29:53,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1378 conditions, 301 events. 167/301 cut-off events. For 1664/1664 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1027 event pairs, 20 based on Foata normal form. 1/302 useless extension candidates. Maximal degree in co-relation 1346. Up to 175 conditions per place. [2024-11-12 08:29:53,806 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 45 selfloop transitions, 24 changer transitions 12/82 dead transitions. [2024-11-12 08:29:53,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 82 transitions, 870 flow [2024-11-12 08:29:53,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 08:29:53,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-12 08:29:53,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 83 transitions. [2024-11-12 08:29:53,807 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41919191919191917 [2024-11-12 08:29:53,807 INFO L175 Difference]: Start difference. First operand has 80 places, 62 transitions, 603 flow. Second operand 9 states and 83 transitions. [2024-11-12 08:29:53,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 82 transitions, 870 flow [2024-11-12 08:29:53,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 82 transitions, 796 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-11-12 08:29:53,811 INFO L231 Difference]: Finished difference. Result has 81 places, 60 transitions, 556 flow [2024-11-12 08:29:53,812 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=556, PETRI_PLACES=81, PETRI_TRANSITIONS=60} [2024-11-12 08:29:53,812 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 57 predicate places. [2024-11-12 08:29:53,812 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 60 transitions, 556 flow [2024-11-12 08:29:53,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 08:29:53,812 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:29:53,812 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:29:53,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-12 08:29:53,813 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:29:53,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:29:53,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1549564086, now seen corresponding path program 20 times [2024-11-12 08:29:53,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:29:53,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226076685] [2024-11-12 08:29:53,813 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:29:53,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:29:53,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:29:53,890 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 08:29:53,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:29:53,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226076685] [2024-11-12 08:29:53,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226076685] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:29:53,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:29:53,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-12 08:29:53,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193250161] [2024-11-12 08:29:53,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:29:53,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 08:29:53,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:29:53,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 08:29:53,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-12 08:29:53,894 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-12 08:29:53,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 60 transitions, 556 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 08:29:53,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:29:53,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-12 08:29:53,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:29:54,062 INFO L124 PetriNetUnfolderBase]: 174/311 cut-off events. [2024-11-12 08:29:54,062 INFO L125 PetriNetUnfolderBase]: For 1585/1585 co-relation queries the response was YES. [2024-11-12 08:29:54,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1385 conditions, 311 events. 174/311 cut-off events. For 1585/1585 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1057 event pairs, 23 based on Foata normal form. 1/312 useless extension candidates. Maximal degree in co-relation 1353. Up to 178 conditions per place. [2024-11-12 08:29:54,064 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 48 selfloop transitions, 25 changer transitions 10/84 dead transitions. [2024-11-12 08:29:54,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 84 transitions, 856 flow [2024-11-12 08:29:54,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 08:29:54,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-12 08:29:54,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 85 transitions. [2024-11-12 08:29:54,065 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4292929292929293 [2024-11-12 08:29:54,065 INFO L175 Difference]: Start difference. First operand has 81 places, 60 transitions, 556 flow. Second operand 9 states and 85 transitions. [2024-11-12 08:29:54,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 84 transitions, 856 flow [2024-11-12 08:29:54,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 84 transitions, 802 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-11-12 08:29:54,069 INFO L231 Difference]: Finished difference. Result has 81 places, 61 transitions, 576 flow [2024-11-12 08:29:54,070 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=576, PETRI_PLACES=81, PETRI_TRANSITIONS=61} [2024-11-12 08:29:54,070 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 57 predicate places. [2024-11-12 08:29:54,070 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 61 transitions, 576 flow [2024-11-12 08:29:54,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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 08:29:54,070 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:29:54,070 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:29:54,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-12 08:29:54,070 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:29:54,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:29:54,071 INFO L85 PathProgramCache]: Analyzing trace with hash 2112064056, now seen corresponding path program 1 times [2024-11-12 08:29:54,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:29:54,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717110101] [2024-11-12 08:29:54,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:29:54,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:29:54,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:29:54,093 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 08:29:54,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:29:54,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717110101] [2024-11-12 08:29:54,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717110101] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:29:54,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:29:54,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 08:29:54,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273475433] [2024-11-12 08:29:54,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:29:54,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 08:29:54,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:29:54,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 08:29:54,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 08:29:54,100 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-12 08:29:54,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 61 transitions, 576 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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 08:29:54,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:29:54,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-12 08:29:54,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:29:54,190 INFO L124 PetriNetUnfolderBase]: 211/411 cut-off events. [2024-11-12 08:29:54,191 INFO L125 PetriNetUnfolderBase]: For 2696/2698 co-relation queries the response was YES. [2024-11-12 08:29:54,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1951 conditions, 411 events. 211/411 cut-off events. For 2696/2698 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1776 event pairs, 26 based on Foata normal form. 14/423 useless extension candidates. Maximal degree in co-relation 1914. Up to 112 conditions per place. [2024-11-12 08:29:54,193 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 56 selfloop transitions, 28 changer transitions 4/103 dead transitions. [2024-11-12 08:29:54,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 103 transitions, 1081 flow [2024-11-12 08:29:54,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 08:29:54,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-12 08:29:54,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 84 transitions. [2024-11-12 08:29:54,194 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-11-12 08:29:54,194 INFO L175 Difference]: Start difference. First operand has 81 places, 61 transitions, 576 flow. Second operand 7 states and 84 transitions. [2024-11-12 08:29:54,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 103 transitions, 1081 flow [2024-11-12 08:29:54,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 103 transitions, 1011 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-11-12 08:29:54,200 INFO L231 Difference]: Finished difference. Result has 82 places, 74 transitions, 793 flow [2024-11-12 08:29:54,200 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=793, PETRI_PLACES=82, PETRI_TRANSITIONS=74} [2024-11-12 08:29:54,200 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 58 predicate places. [2024-11-12 08:29:54,200 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 74 transitions, 793 flow [2024-11-12 08:29:54,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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 08:29:54,201 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:29:54,201 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:29:54,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-12 08:29:54,201 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:29:54,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:29:54,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1052236876, now seen corresponding path program 2 times [2024-11-12 08:29:54,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:29:54,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712139020] [2024-11-12 08:29:54,202 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:29:54,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:29:54,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:29:54,236 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 08:29:54,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:29:54,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712139020] [2024-11-12 08:29:54,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712139020] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:29:54,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390434754] [2024-11-12 08:29:54,237 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 08:29:54,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:29:54,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:29:54,239 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 08:29:54,240 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 08:29:54,283 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 08:29:54,283 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:29:54,285 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-12 08:29:54,287 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:29:54,309 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 08:29:54,309 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:29:54,335 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 08:29:54,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390434754] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-12 08:29:54,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-12 08:29:54,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2024-11-12 08:29:54,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435407017] [2024-11-12 08:29:54,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:29:54,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 08:29:54,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:29:54,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 08:29:54,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-12 08:29:54,341 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-12 08:29:54,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 74 transitions, 793 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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 08:29:54,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:29:54,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-12 08:29:54,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:29:54,442 INFO L124 PetriNetUnfolderBase]: 259/514 cut-off events. [2024-11-12 08:29:54,443 INFO L125 PetriNetUnfolderBase]: For 4531/4533 co-relation queries the response was YES. [2024-11-12 08:29:54,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2560 conditions, 514 events. 259/514 cut-off events. For 4531/4533 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2400 event pairs, 36 based on Foata normal form. 10/516 useless extension candidates. Maximal degree in co-relation 2395. Up to 196 conditions per place. [2024-11-12 08:29:54,447 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 66 selfloop transitions, 31 changer transitions 0/112 dead transitions. [2024-11-12 08:29:54,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 112 transitions, 1254 flow [2024-11-12 08:29:54,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 08:29:54,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 08:29:54,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2024-11-12 08:29:54,448 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6515151515151515 [2024-11-12 08:29:54,448 INFO L175 Difference]: Start difference. First operand has 82 places, 74 transitions, 793 flow. Second operand 6 states and 86 transitions. [2024-11-12 08:29:54,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 112 transitions, 1254 flow [2024-11-12 08:29:54,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 112 transitions, 1159 flow, removed 35 selfloop flow, removed 3 redundant places. [2024-11-12 08:29:54,456 INFO L231 Difference]: Finished difference. Result has 88 places, 84 transitions, 972 flow [2024-11-12 08:29:54,456 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=722, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=972, PETRI_PLACES=88, PETRI_TRANSITIONS=84} [2024-11-12 08:29:54,457 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 64 predicate places. [2024-11-12 08:29:54,457 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 84 transitions, 972 flow [2024-11-12 08:29:54,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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 08:29:54,457 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:29:54,457 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:29:54,471 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 08:29:54,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-12 08:29:54,658 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:29:54,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:29:54,659 INFO L85 PathProgramCache]: Analyzing trace with hash -272123961, now seen corresponding path program 1 times [2024-11-12 08:29:54,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:29:54,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737695070] [2024-11-12 08:29:54,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:29:54,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:29:54,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:29:54,688 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 08:29:54,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:29:54,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737695070] [2024-11-12 08:29:54,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737695070] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:29:54,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153489230] [2024-11-12 08:29:54,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:29:54,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:29:54,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:29:54,691 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 08:29:54,692 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 08:29:54,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:29:54,730 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-12 08:29:54,731 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:29:54,741 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 08:29:54,741 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:29:54,766 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 08:29:54,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153489230] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-12 08:29:54,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-12 08:29:54,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2024-11-12 08:29:54,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584605905] [2024-11-12 08:29:54,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:29:54,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 08:29:54,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:29:54,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 08:29:54,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-12 08:29:54,780 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-12 08:29:54,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 84 transitions, 972 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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 08:29:54,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:29:54,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-12 08:29:54,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:29:54,890 INFO L124 PetriNetUnfolderBase]: 343/706 cut-off events. [2024-11-12 08:29:54,890 INFO L125 PetriNetUnfolderBase]: For 5821/5829 co-relation queries the response was YES. [2024-11-12 08:29:54,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3476 conditions, 706 events. 343/706 cut-off events. For 5821/5829 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3718 event pairs, 23 based on Foata normal form. 17/717 useless extension candidates. Maximal degree in co-relation 3006. Up to 308 conditions per place. [2024-11-12 08:29:54,895 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 66 selfloop transitions, 34 changer transitions 0/115 dead transitions. [2024-11-12 08:29:54,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 115 transitions, 1428 flow [2024-11-12 08:29:54,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 08:29:54,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 08:29:54,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 71 transitions. [2024-11-12 08:29:54,896 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6454545454545455 [2024-11-12 08:29:54,896 INFO L175 Difference]: Start difference. First operand has 88 places, 84 transitions, 972 flow. Second operand 5 states and 71 transitions. [2024-11-12 08:29:54,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 115 transitions, 1428 flow [2024-11-12 08:29:54,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 115 transitions, 1317 flow, removed 35 selfloop flow, removed 2 redundant places. [2024-11-12 08:29:54,909 INFO L231 Difference]: Finished difference. Result has 93 places, 91 transitions, 1118 flow [2024-11-12 08:29:54,909 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=887, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1118, PETRI_PLACES=93, PETRI_TRANSITIONS=91} [2024-11-12 08:29:54,909 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 69 predicate places. [2024-11-12 08:29:54,909 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 91 transitions, 1118 flow [2024-11-12 08:29:54,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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 08:29:54,910 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:29:54,910 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:29:54,924 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 08:29:55,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-12 08:29:55,113 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:29:55,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:29:55,114 INFO L85 PathProgramCache]: Analyzing trace with hash -615720938, now seen corresponding path program 3 times [2024-11-12 08:29:55,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:29:55,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584945938] [2024-11-12 08:29:55,114 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:29:55,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:29:55,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:29:55,155 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 08:29:55,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:29:55,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584945938] [2024-11-12 08:29:55,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584945938] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:29:55,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:29:55,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 08:29:55,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863595171] [2024-11-12 08:29:55,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:29:55,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 08:29:55,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:29:55,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 08:29:55,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 08:29:55,166 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-12 08:29:55,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 91 transitions, 1118 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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 08:29:55,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:29:55,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-12 08:29:55,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:29:55,309 INFO L124 PetriNetUnfolderBase]: 314/651 cut-off events. [2024-11-12 08:29:55,309 INFO L125 PetriNetUnfolderBase]: For 5280/5289 co-relation queries the response was YES. [2024-11-12 08:29:55,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3221 conditions, 651 events. 314/651 cut-off events. For 5280/5289 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3332 event pairs, 40 based on Foata normal form. 16/667 useless extension candidates. Maximal degree in co-relation 3061. Up to 154 conditions per place. [2024-11-12 08:29:55,316 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 72 selfloop transitions, 30 changer transitions 4/121 dead transitions. [2024-11-12 08:29:55,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 121 transitions, 1480 flow [2024-11-12 08:29:55,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 08:29:55,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-12 08:29:55,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-11-12 08:29:55,317 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-11-12 08:29:55,317 INFO L175 Difference]: Start difference. First operand has 93 places, 91 transitions, 1118 flow. Second operand 8 states and 99 transitions. [2024-11-12 08:29:55,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 121 transitions, 1480 flow [2024-11-12 08:29:55,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 121 transitions, 1454 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-11-12 08:29:55,330 INFO L231 Difference]: Finished difference. Result has 99 places, 86 transitions, 1087 flow [2024-11-12 08:29:55,330 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1041, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1087, PETRI_PLACES=99, PETRI_TRANSITIONS=86} [2024-11-12 08:29:55,331 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 75 predicate places. [2024-11-12 08:29:55,331 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 86 transitions, 1087 flow [2024-11-12 08:29:55,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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 08:29:55,331 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:29:55,331 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:29:55,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-12 08:29:55,331 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:29:55,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:29:55,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1299711871, now seen corresponding path program 2 times [2024-11-12 08:29:55,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:29:55,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021897798] [2024-11-12 08:29:55,332 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:29:55,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:29:55,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:29:55,355 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 08:29:55,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:29:55,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021897798] [2024-11-12 08:29:55,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021897798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:29:55,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:29:55,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 08:29:55,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323118672] [2024-11-12 08:29:55,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:29:55,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 08:29:55,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:29:55,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 08:29:55,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 08:29:55,362 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-12 08:29:55,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 86 transitions, 1087 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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 08:29:55,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:29:55,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-12 08:29:55,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:29:55,463 INFO L124 PetriNetUnfolderBase]: 277/575 cut-off events. [2024-11-12 08:29:55,463 INFO L125 PetriNetUnfolderBase]: For 4862/4870 co-relation queries the response was YES. [2024-11-12 08:29:55,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2956 conditions, 575 events. 277/575 cut-off events. For 4862/4870 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2883 event pairs, 19 based on Foata normal form. 20/591 useless extension candidates. Maximal degree in co-relation 2797. Up to 173 conditions per place. [2024-11-12 08:29:55,467 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 64 selfloop transitions, 24 changer transitions 3/105 dead transitions. [2024-11-12 08:29:55,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 105 transitions, 1410 flow [2024-11-12 08:29:55,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 08:29:55,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 08:29:55,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 74 transitions. [2024-11-12 08:29:55,468 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5606060606060606 [2024-11-12 08:29:55,468 INFO L175 Difference]: Start difference. First operand has 99 places, 86 transitions, 1087 flow. Second operand 6 states and 74 transitions. [2024-11-12 08:29:55,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 105 transitions, 1410 flow [2024-11-12 08:29:55,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 105 transitions, 1369 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-12 08:29:55,478 INFO L231 Difference]: Finished difference. Result has 103 places, 79 transitions, 1005 flow [2024-11-12 08:29:55,478 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=988, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1005, PETRI_PLACES=103, PETRI_TRANSITIONS=79} [2024-11-12 08:29:55,479 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 79 predicate places. [2024-11-12 08:29:55,479 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 79 transitions, 1005 flow [2024-11-12 08:29:55,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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 08:29:55,479 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:29:55,479 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:29:55,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-12 08:29:55,480 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:29:55,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:29:55,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1060191754, now seen corresponding path program 4 times [2024-11-12 08:29:55,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:29:55,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839507051] [2024-11-12 08:29:55,480 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:29:55,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:29:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:29:55,502 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 08:29:55,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:29:55,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839507051] [2024-11-12 08:29:55,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839507051] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:29:55,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690036749] [2024-11-12 08:29:55,502 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-12 08:29:55,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:29:55,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:29:55,504 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 08:29:55,505 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 08:29:55,539 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-12 08:29:55,540 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:29:55,540 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-12 08:29:55,541 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:29:55,546 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 08:29:55,546 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:29:55,567 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 08:29:55,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690036749] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-12 08:29:55,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-12 08:29:55,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2024-11-12 08:29:55,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139446524] [2024-11-12 08:29:55,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:29:55,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 08:29:55,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:29:55,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 08:29:55,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-12 08:29:55,574 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-12 08:29:55,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 79 transitions, 1005 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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 08:29:55,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:29:55,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-12 08:29:55,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:29:55,675 INFO L124 PetriNetUnfolderBase]: 245/501 cut-off events. [2024-11-12 08:29:55,675 INFO L125 PetriNetUnfolderBase]: For 4590/4596 co-relation queries the response was YES. [2024-11-12 08:29:55,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2598 conditions, 501 events. 245/501 cut-off events. For 4590/4596 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2342 event pairs, 23 based on Foata normal form. 14/513 useless extension candidates. Maximal degree in co-relation 2483. Up to 192 conditions per place. [2024-11-12 08:29:55,679 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 59 selfloop transitions, 24 changer transitions 1/98 dead transitions. [2024-11-12 08:29:55,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 98 transitions, 1257 flow [2024-11-12 08:29:55,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 08:29:55,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 08:29:55,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 68 transitions. [2024-11-12 08:29:55,680 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6181818181818182 [2024-11-12 08:29:55,680 INFO L175 Difference]: Start difference. First operand has 103 places, 79 transitions, 1005 flow. Second operand 5 states and 68 transitions. [2024-11-12 08:29:55,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 98 transitions, 1257 flow [2024-11-12 08:29:55,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 98 transitions, 1195 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-11-12 08:29:55,689 INFO L231 Difference]: Finished difference. Result has 98 places, 77 transitions, 943 flow [2024-11-12 08:29:55,689 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=899, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=943, PETRI_PLACES=98, PETRI_TRANSITIONS=77} [2024-11-12 08:29:55,689 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 74 predicate places. [2024-11-12 08:29:55,689 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 77 transitions, 943 flow [2024-11-12 08:29:55,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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 08:29:55,690 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:29:55,690 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:29:55,702 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 08:29:55,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:29:55,890 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:29:55,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:29:55,891 INFO L85 PathProgramCache]: Analyzing trace with hash -2024404763, now seen corresponding path program 3 times [2024-11-12 08:29:55,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:29:55,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036695091] [2024-11-12 08:29:55,891 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:29:55,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:29:55,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:29:55,912 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 08:29:55,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:29:55,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036695091] [2024-11-12 08:29:55,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036695091] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:29:55,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704812743] [2024-11-12 08:29:55,913 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 08:29:55,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:29:55,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:29:55,914 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 08:29:55,916 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 08:29:55,956 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-12 08:29:55,956 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:29:55,957 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-12 08:29:55,958 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:29:55,967 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 08:29:55,967 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:29:55,997 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 08:29:55,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704812743] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-12 08:29:55,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-12 08:29:55,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2024-11-12 08:29:55,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940694515] [2024-11-12 08:29:55,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:29:55,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 08:29:55,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:29:55,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 08:29:55,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-12 08:29:56,005 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-12 08:29:56,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 77 transitions, 943 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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 08:29:56,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:29:56,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-12 08:29:56,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:29:56,110 INFO L124 PetriNetUnfolderBase]: 312/620 cut-off events. [2024-11-12 08:29:56,111 INFO L125 PetriNetUnfolderBase]: For 5437/5441 co-relation queries the response was YES. [2024-11-12 08:29:56,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3267 conditions, 620 events. 312/620 cut-off events. For 5437/5441 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3059 event pairs, 62 based on Foata normal form. 11/624 useless extension candidates. Maximal degree in co-relation 3115. Up to 283 conditions per place. [2024-11-12 08:29:56,116 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 68 selfloop transitions, 40 changer transitions 0/122 dead transitions. [2024-11-12 08:29:56,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 122 transitions, 1585 flow [2024-11-12 08:29:56,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 08:29:56,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 08:29:56,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 84 transitions. [2024-11-12 08:29:56,116 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2024-11-12 08:29:56,116 INFO L175 Difference]: Start difference. First operand has 98 places, 77 transitions, 943 flow. Second operand 6 states and 84 transitions. [2024-11-12 08:29:56,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 122 transitions, 1585 flow [2024-11-12 08:29:56,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 122 transitions, 1509 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-11-12 08:29:56,125 INFO L231 Difference]: Finished difference. Result has 100 places, 95 transitions, 1332 flow [2024-11-12 08:29:56,126 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=890, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1332, PETRI_PLACES=100, PETRI_TRANSITIONS=95} [2024-11-12 08:29:56,126 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 76 predicate places. [2024-11-12 08:29:56,126 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 95 transitions, 1332 flow [2024-11-12 08:29:56,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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 08:29:56,126 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:29:56,126 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:29:56,139 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 08:29:56,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-12 08:29:56,331 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:29:56,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:29:56,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1479585689, now seen corresponding path program 4 times [2024-11-12 08:29:56,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:29:56,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691042667] [2024-11-12 08:29:56,331 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:29:56,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:29:56,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:29:56,365 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 08:29:56,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:29:56,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691042667] [2024-11-12 08:29:56,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691042667] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:29:56,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:29:56,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 08:29:56,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570101348] [2024-11-12 08:29:56,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:29:56,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 08:29:56,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:29:56,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 08:29:56,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 08:29:56,372 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-12 08:29:56,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 95 transitions, 1332 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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 08:29:56,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:29:56,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-12 08:29:56,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:29:56,476 INFO L124 PetriNetUnfolderBase]: 297/605 cut-off events. [2024-11-12 08:29:56,476 INFO L125 PetriNetUnfolderBase]: For 5750/5752 co-relation queries the response was YES. [2024-11-12 08:29:56,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3357 conditions, 605 events. 297/605 cut-off events. For 5750/5752 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3041 event pairs, 55 based on Foata normal form. 12/612 useless extension candidates. Maximal degree in co-relation 2408. Up to 222 conditions per place. [2024-11-12 08:29:56,483 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 65 selfloop transitions, 32 changer transitions 3/114 dead transitions. [2024-11-12 08:29:56,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 114 transitions, 1645 flow [2024-11-12 08:29:56,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 08:29:56,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-12 08:29:56,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-11-12 08:29:56,484 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5194805194805194 [2024-11-12 08:29:56,484 INFO L175 Difference]: Start difference. First operand has 100 places, 95 transitions, 1332 flow. Second operand 7 states and 80 transitions. [2024-11-12 08:29:56,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 114 transitions, 1645 flow [2024-11-12 08:29:56,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 114 transitions, 1610 flow, removed 14 selfloop flow, removed 1 redundant places. [2024-11-12 08:29:56,495 INFO L231 Difference]: Finished difference. Result has 106 places, 92 transitions, 1328 flow [2024-11-12 08:29:56,496 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1256, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1328, PETRI_PLACES=106, PETRI_TRANSITIONS=92} [2024-11-12 08:29:56,498 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 82 predicate places. [2024-11-12 08:29:56,498 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 92 transitions, 1328 flow [2024-11-12 08:29:56,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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 08:29:56,498 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:29:56,499 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:29:56,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-12 08:29:56,499 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:29:56,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:29:56,499 INFO L85 PathProgramCache]: Analyzing trace with hash -841264478, now seen corresponding path program 5 times [2024-11-12 08:29:56,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:29:56,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575468239] [2024-11-12 08:29:56,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:29:56,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:29:56,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:29:56,521 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 08:29:56,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:29:56,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575468239] [2024-11-12 08:29:56,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575468239] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:29:56,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:29:56,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 08:29:56,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416515573] [2024-11-12 08:29:56,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:29:56,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 08:29:56,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:29:56,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 08:29:56,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 08:29:56,529 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-12 08:29:56,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 92 transitions, 1328 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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 08:29:56,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:29:56,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-12 08:29:56,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:29:56,634 INFO L124 PetriNetUnfolderBase]: 255/519 cut-off events. [2024-11-12 08:29:56,634 INFO L125 PetriNetUnfolderBase]: For 5301/5301 co-relation queries the response was YES. [2024-11-12 08:29:56,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2967 conditions, 519 events. 255/519 cut-off events. For 5301/5301 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2434 event pairs, 20 based on Foata normal form. 14/531 useless extension candidates. Maximal degree in co-relation 2517. Up to 159 conditions per place. [2024-11-12 08:29:56,638 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 68 selfloop transitions, 22 changer transitions 3/106 dead transitions. [2024-11-12 08:29:56,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 106 transitions, 1571 flow [2024-11-12 08:29:56,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 08:29:56,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 08:29:56,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 72 transitions. [2024-11-12 08:29:56,639 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-11-12 08:29:56,639 INFO L175 Difference]: Start difference. First operand has 106 places, 92 transitions, 1328 flow. Second operand 6 states and 72 transitions. [2024-11-12 08:29:56,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 106 transitions, 1571 flow [2024-11-12 08:29:56,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 106 transitions, 1446 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-11-12 08:29:56,648 INFO L231 Difference]: Finished difference. Result has 106 places, 83 transitions, 1105 flow [2024-11-12 08:29:56,649 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1113, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1105, PETRI_PLACES=106, PETRI_TRANSITIONS=83} [2024-11-12 08:29:56,649 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 82 predicate places. [2024-11-12 08:29:56,649 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 83 transitions, 1105 flow [2024-11-12 08:29:56,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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 08:29:56,650 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:29:56,650 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:29:56,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-12 08:29:56,650 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:29:56,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:29:56,650 INFO L85 PathProgramCache]: Analyzing trace with hash -867054265, now seen corresponding path program 5 times [2024-11-12 08:29:56,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:29:56,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825820481] [2024-11-12 08:29:56,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:29:56,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:29:56,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:29:56,670 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 08:29:56,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:29:56,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825820481] [2024-11-12 08:29:56,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825820481] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:29:56,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:29:56,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 08:29:56,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200448743] [2024-11-12 08:29:56,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:29:56,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 08:29:56,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:29:56,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 08:29:56,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 08:29:56,677 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-12 08:29:56,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 83 transitions, 1105 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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 08:29:56,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:29:56,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-12 08:29:56,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:29:56,784 INFO L124 PetriNetUnfolderBase]: 225/443 cut-off events. [2024-11-12 08:29:56,784 INFO L125 PetriNetUnfolderBase]: For 4459/4459 co-relation queries the response was YES. [2024-11-12 08:29:56,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2562 conditions, 443 events. 225/443 cut-off events. For 4459/4459 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1938 event pairs, 40 based on Foata normal form. 6/445 useless extension candidates. Maximal degree in co-relation 2147. Up to 146 conditions per place. [2024-11-12 08:29:56,787 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 61 selfloop transitions, 27 changer transitions 2/103 dead transitions. [2024-11-12 08:29:56,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 103 transitions, 1383 flow [2024-11-12 08:29:56,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 08:29:56,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-12 08:29:56,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-11-12 08:29:56,788 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5170454545454546 [2024-11-12 08:29:56,788 INFO L175 Difference]: Start difference. First operand has 106 places, 83 transitions, 1105 flow. Second operand 8 states and 91 transitions. [2024-11-12 08:29:56,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 103 transitions, 1383 flow [2024-11-12 08:29:56,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 103 transitions, 1302 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-11-12 08:29:56,796 INFO L231 Difference]: Finished difference. Result has 103 places, 78 transitions, 1011 flow [2024-11-12 08:29:56,796 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=977, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1011, PETRI_PLACES=103, PETRI_TRANSITIONS=78} [2024-11-12 08:29:56,797 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 79 predicate places. [2024-11-12 08:29:56,797 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 78 transitions, 1011 flow [2024-11-12 08:29:56,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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 08:29:56,797 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:29:56,797 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:29:56,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-12 08:29:56,798 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:29:56,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:29:56,799 INFO L85 PathProgramCache]: Analyzing trace with hash -529516801, now seen corresponding path program 1 times [2024-11-12 08:29:56,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:29:56,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931731141] [2024-11-12 08:29:56,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:29:56,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:29:56,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:29:56,887 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 08:29:56,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:29:56,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931731141] [2024-11-12 08:29:56,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931731141] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:29:56,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057027669] [2024-11-12 08:29:56,887 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:29:56,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:29:56,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:29:56,890 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 08:29:56,891 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 08:29:56,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:29:56,927 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-12 08:29:56,927 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:29:57,024 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 08:29:57,024 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:29:57,282 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 08:29:57,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057027669] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:29:57,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:29:57,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-11-12 08:29:57,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927547715] [2024-11-12 08:29:57,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:29:57,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-12 08:29:57,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:29:57,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-12 08:29:57,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2024-11-12 08:29:57,286 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-12 08:29:57,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 78 transitions, 1011 flow. Second operand has 23 states, 23 states have (on average 4.695652173913044) internal successors, (108), 23 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:29:57,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:29:57,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-12 08:29:57,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:29:58,454 INFO L124 PetriNetUnfolderBase]: 677/1270 cut-off events. [2024-11-12 08:29:58,454 INFO L125 PetriNetUnfolderBase]: For 9583/9583 co-relation queries the response was YES. [2024-11-12 08:29:58,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6357 conditions, 1270 events. 677/1270 cut-off events. For 9583/9583 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6772 event pairs, 39 based on Foata normal form. 2/1272 useless extension candidates. Maximal degree in co-relation 5114. Up to 236 conditions per place. [2024-11-12 08:29:58,463 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 128 selfloop transitions, 85 changer transitions 64/278 dead transitions. [2024-11-12 08:29:58,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 278 transitions, 3322 flow [2024-11-12 08:29:58,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-12 08:29:58,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2024-11-12 08:29:58,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 310 transitions. [2024-11-12 08:29:58,467 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39141414141414144 [2024-11-12 08:29:58,467 INFO L175 Difference]: Start difference. First operand has 103 places, 78 transitions, 1011 flow. Second operand 36 states and 310 transitions. [2024-11-12 08:29:58,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 278 transitions, 3322 flow [2024-11-12 08:29:58,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 278 transitions, 3064 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-11-12 08:29:58,481 INFO L231 Difference]: Finished difference. Result has 149 places, 126 transitions, 1895 flow [2024-11-12 08:29:58,481 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=908, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=1895, PETRI_PLACES=149, PETRI_TRANSITIONS=126} [2024-11-12 08:29:58,482 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 125 predicate places. [2024-11-12 08:29:58,482 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 126 transitions, 1895 flow [2024-11-12 08:29:58,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.695652173913044) internal successors, (108), 23 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:29:58,482 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:29:58,482 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:29:58,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-12 08:29:58,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:29:58,687 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:29:58,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:29:58,687 INFO L85 PathProgramCache]: Analyzing trace with hash -947737611, now seen corresponding path program 2 times [2024-11-12 08:29:58,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:29:58,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936600317] [2024-11-12 08:29:58,687 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:29:58,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:29:58,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:29:58,786 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 08:29:58,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:29:58,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936600317] [2024-11-12 08:29:58,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936600317] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:29:58,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800884290] [2024-11-12 08:29:58,787 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 08:29:58,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:29:58,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:29:58,789 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 08:29:58,790 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 08:29:58,824 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 08:29:58,824 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:29:58,825 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-12 08:29:58,826 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:29:58,923 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 08:29:58,923 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:29:59,104 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 08:29:59,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800884290] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:29:59,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:29:59,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-11-12 08:29:59,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412297593] [2024-11-12 08:29:59,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:29:59,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-12 08:29:59,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:29:59,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-12 08:29:59,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2024-11-12 08:29:59,108 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-12 08:29:59,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 126 transitions, 1895 flow. Second operand has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 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 08:29:59,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:29:59,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-12 08:29:59,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:29:59,594 INFO L124 PetriNetUnfolderBase]: 749/1478 cut-off events. [2024-11-12 08:29:59,594 INFO L125 PetriNetUnfolderBase]: For 12445/12445 co-relation queries the response was YES. [2024-11-12 08:29:59,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7577 conditions, 1478 events. 749/1478 cut-off events. For 12445/12445 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 8649 event pairs, 98 based on Foata normal form. 3/1481 useless extension candidates. Maximal degree in co-relation 7481. Up to 612 conditions per place. [2024-11-12 08:29:59,602 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 101 selfloop transitions, 97 changer transitions 16/215 dead transitions. [2024-11-12 08:29:59,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 215 transitions, 3273 flow [2024-11-12 08:29:59,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-12 08:29:59,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-12 08:29:59,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 128 transitions. [2024-11-12 08:29:59,603 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4155844155844156 [2024-11-12 08:29:59,604 INFO L175 Difference]: Start difference. First operand has 149 places, 126 transitions, 1895 flow. Second operand 14 states and 128 transitions. [2024-11-12 08:29:59,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 215 transitions, 3273 flow [2024-11-12 08:29:59,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 215 transitions, 2743 flow, removed 181 selfloop flow, removed 17 redundant places. [2024-11-12 08:29:59,632 INFO L231 Difference]: Finished difference. Result has 139 places, 158 transitions, 2183 flow [2024-11-12 08:29:59,632 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1540, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2183, PETRI_PLACES=139, PETRI_TRANSITIONS=158} [2024-11-12 08:29:59,632 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 115 predicate places. [2024-11-12 08:29:59,632 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 158 transitions, 2183 flow [2024-11-12 08:29:59,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 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 08:29:59,633 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:29:59,633 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:29:59,645 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-12 08:29:59,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:29:59,833 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:29:59,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:29:59,834 INFO L85 PathProgramCache]: Analyzing trace with hash -698936109, now seen corresponding path program 3 times [2024-11-12 08:29:59,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:29:59,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708238992] [2024-11-12 08:29:59,834 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:29:59,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:29:59,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:29:59,922 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 08:29:59,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:29:59,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708238992] [2024-11-12 08:29:59,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708238992] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:29:59,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140313972] [2024-11-12 08:29:59,922 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 08:29:59,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:29:59,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:29:59,924 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 08:29:59,925 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 08:29:59,962 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-12 08:29:59,962 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:29:59,963 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-12 08:29:59,963 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:30:00,063 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 08:30:00,063 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:30:00,225 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 08:30:00,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140313972] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:30:00,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:30:00,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-11-12 08:30:00,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586757334] [2024-11-12 08:30:00,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:30:00,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-12 08:30:00,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:30:00,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-12 08:30:00,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2024-11-12 08:30:00,228 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-12 08:30:00,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 158 transitions, 2183 flow. Second operand has 23 states, 23 states have (on average 4.391304347826087) internal successors, (101), 23 states have internal predecessors, (101), 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 08:30:00,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:30:00,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-12 08:30:00,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:30:00,792 INFO L124 PetriNetUnfolderBase]: 893/1746 cut-off events. [2024-11-12 08:30:00,792 INFO L125 PetriNetUnfolderBase]: For 13744/13744 co-relation queries the response was YES. [2024-11-12 08:30:00,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8621 conditions, 1746 events. 893/1746 cut-off events. For 13744/13744 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 10480 event pairs, 89 based on Foata normal form. 6/1752 useless extension candidates. Maximal degree in co-relation 8499. Up to 438 conditions per place. [2024-11-12 08:30:00,800 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 88 selfloop transitions, 142 changer transitions 27/258 dead transitions. [2024-11-12 08:30:00,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 258 transitions, 3782 flow [2024-11-12 08:30:00,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-12 08:30:00,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-12 08:30:00,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 154 transitions. [2024-11-12 08:30:00,803 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-11-12 08:30:00,803 INFO L175 Difference]: Start difference. First operand has 139 places, 158 transitions, 2183 flow. Second operand 18 states and 154 transitions. [2024-11-12 08:30:00,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 258 transitions, 3782 flow [2024-11-12 08:30:00,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 258 transitions, 3643 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-11-12 08:30:00,833 INFO L231 Difference]: Finished difference. Result has 154 places, 193 transitions, 3073 flow [2024-11-12 08:30:00,833 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2089, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3073, PETRI_PLACES=154, PETRI_TRANSITIONS=193} [2024-11-12 08:30:00,833 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 130 predicate places. [2024-11-12 08:30:00,833 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 193 transitions, 3073 flow [2024-11-12 08:30:00,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.391304347826087) internal successors, (101), 23 states have internal predecessors, (101), 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 08:30:00,834 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:30:00,834 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:30:00,847 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-12 08:30:01,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:30:01,039 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:30:01,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:30:01,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1038621285, now seen corresponding path program 4 times [2024-11-12 08:30:01,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:30:01,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909643992] [2024-11-12 08:30:01,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:30:01,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:30:01,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:30:01,124 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 08:30:01,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:30:01,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909643992] [2024-11-12 08:30:01,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909643992] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:30:01,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495347465] [2024-11-12 08:30:01,125 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-12 08:30:01,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:30:01,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:30:01,126 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:30:01,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-12 08:30:01,164 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-12 08:30:01,164 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:30:01,165 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-12 08:30:01,166 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:30:01,262 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 08:30:01,263 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:30:01,419 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 08:30:01,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495347465] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:30:01,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:30:01,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-11-12 08:30:01,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972710491] [2024-11-12 08:30:01,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:30:01,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-12 08:30:01,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:30:01,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-12 08:30:01,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2024-11-12 08:30:01,424 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-12 08:30:01,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 193 transitions, 3073 flow. Second operand has 23 states, 23 states have (on average 4.521739130434782) internal successors, (104), 23 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 08:30:01,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:30:01,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-12 08:30:01,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:30:01,933 INFO L124 PetriNetUnfolderBase]: 860/1711 cut-off events. [2024-11-12 08:30:01,933 INFO L125 PetriNetUnfolderBase]: For 15914/15914 co-relation queries the response was YES. [2024-11-12 08:30:01,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9181 conditions, 1711 events. 860/1711 cut-off events. For 15914/15914 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 10468 event pairs, 96 based on Foata normal form. 4/1715 useless extension candidates. Maximal degree in co-relation 9047. Up to 520 conditions per place. [2024-11-12 08:30:01,943 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 88 selfloop transitions, 137 changer transitions 14/240 dead transitions. [2024-11-12 08:30:01,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 240 transitions, 3888 flow [2024-11-12 08:30:01,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-12 08:30:01,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-12 08:30:01,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 141 transitions. [2024-11-12 08:30:01,946 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-11-12 08:30:01,946 INFO L175 Difference]: Start difference. First operand has 154 places, 193 transitions, 3073 flow. Second operand 16 states and 141 transitions. [2024-11-12 08:30:01,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 240 transitions, 3888 flow [2024-11-12 08:30:01,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 240 transitions, 3675 flow, removed 76 selfloop flow, removed 5 redundant places. [2024-11-12 08:30:01,993 INFO L231 Difference]: Finished difference. Result has 165 places, 192 transitions, 3115 flow [2024-11-12 08:30:01,993 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2866, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3115, PETRI_PLACES=165, PETRI_TRANSITIONS=192} [2024-11-12 08:30:01,993 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 141 predicate places. [2024-11-12 08:30:01,993 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 192 transitions, 3115 flow [2024-11-12 08:30:01,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.521739130434782) internal successors, (104), 23 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 08:30:01,994 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:30:01,994 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:30:02,015 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-12 08:30:02,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-12 08:30:02,194 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:30:02,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:30:02,195 INFO L85 PathProgramCache]: Analyzing trace with hash -819030233, now seen corresponding path program 5 times [2024-11-12 08:30:02,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:30:02,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662148669] [2024-11-12 08:30:02,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:30:02,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:30:02,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:30:02,288 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 08:30:02,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:30:02,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662148669] [2024-11-12 08:30:02,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662148669] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:30:02,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400328812] [2024-11-12 08:30:02,288 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-12 08:30:02,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:30:02,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:30:02,290 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:30:02,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-12 08:30:02,326 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 08:30:02,326 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:30:02,327 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-12 08:30:02,327 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:30:02,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:02,405 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 08:30:02,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400328812] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:30:02,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 08:30:02,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 15 [2024-11-12 08:30:02,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756332036] [2024-11-12 08:30:02,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:30:02,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 08:30:02,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:30:02,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 08:30:02,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2024-11-12 08:30:02,408 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-12 08:30:02,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 192 transitions, 3115 flow. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 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 08:30:02,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:30:02,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-12 08:30:02,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:30:02,621 INFO L124 PetriNetUnfolderBase]: 788/1551 cut-off events. [2024-11-12 08:30:02,621 INFO L125 PetriNetUnfolderBase]: For 16027/16027 co-relation queries the response was YES. [2024-11-12 08:30:02,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8831 conditions, 1551 events. 788/1551 cut-off events. For 16027/16027 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 9060 event pairs, 179 based on Foata normal form. 2/1553 useless extension candidates. Maximal degree in co-relation 8703. Up to 1069 conditions per place. [2024-11-12 08:30:02,630 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 121 selfloop transitions, 53 changer transitions 46/221 dead transitions. [2024-11-12 08:30:02,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 221 transitions, 3867 flow [2024-11-12 08:30:02,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 08:30:02,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-12 08:30:02,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 82 transitions. [2024-11-12 08:30:02,631 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41414141414141414 [2024-11-12 08:30:02,631 INFO L175 Difference]: Start difference. First operand has 165 places, 192 transitions, 3115 flow. Second operand 9 states and 82 transitions. [2024-11-12 08:30:02,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 221 transitions, 3867 flow [2024-11-12 08:30:02,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 221 transitions, 3636 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-11-12 08:30:02,672 INFO L231 Difference]: Finished difference. Result has 161 places, 165 transitions, 2510 flow [2024-11-12 08:30:02,672 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2896, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2510, PETRI_PLACES=161, PETRI_TRANSITIONS=165} [2024-11-12 08:30:02,672 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 137 predicate places. [2024-11-12 08:30:02,672 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 165 transitions, 2510 flow [2024-11-12 08:30:02,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 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 08:30:02,673 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:30:02,673 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:30:02,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-12 08:30:02,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-12 08:30:02,873 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:30:02,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:30:02,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1611874253, now seen corresponding path program 6 times [2024-11-12 08:30:02,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:30:02,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242054439] [2024-11-12 08:30:02,874 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:30:02,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:30:02,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:30:02,955 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 08:30:02,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:30:02,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242054439] [2024-11-12 08:30:02,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242054439] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:30:02,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775574248] [2024-11-12 08:30:02,956 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-12 08:30:02,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:30:02,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:30:02,957 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:30:02,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-12 08:30:02,995 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-12 08:30:02,995 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:30:02,996 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-12 08:30:02,998 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:30:03,102 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 08:30:03,102 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:30:03,293 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 08:30:03,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775574248] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:30:03,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:30:03,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-11-12 08:30:03,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659831034] [2024-11-12 08:30:03,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:30:03,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-12 08:30:03,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:30:03,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-12 08:30:03,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2024-11-12 08:30:03,297 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-12 08:30:03,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 165 transitions, 2510 flow. Second operand has 23 states, 23 states have (on average 4.565217391304348) internal successors, (105), 23 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:30:03,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:30:03,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-12 08:30:03,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:30:03,677 INFO L124 PetriNetUnfolderBase]: 748/1497 cut-off events. [2024-11-12 08:30:03,677 INFO L125 PetriNetUnfolderBase]: For 13553/13553 co-relation queries the response was YES. [2024-11-12 08:30:03,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7668 conditions, 1497 events. 748/1497 cut-off events. For 13553/13553 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 8868 event pairs, 130 based on Foata normal form. 4/1501 useless extension candidates. Maximal degree in co-relation 7539. Up to 771 conditions per place. [2024-11-12 08:30:03,685 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 92 selfloop transitions, 93 changer transitions 22/208 dead transitions. [2024-11-12 08:30:03,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 208 transitions, 3292 flow [2024-11-12 08:30:03,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-12 08:30:03,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-12 08:30:03,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 113 transitions. [2024-11-12 08:30:03,686 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42803030303030304 [2024-11-12 08:30:03,686 INFO L175 Difference]: Start difference. First operand has 161 places, 165 transitions, 2510 flow. Second operand 12 states and 113 transitions. [2024-11-12 08:30:03,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 208 transitions, 3292 flow [2024-11-12 08:30:03,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 208 transitions, 2985 flow, removed 23 selfloop flow, removed 15 redundant places. [2024-11-12 08:30:03,716 INFO L231 Difference]: Finished difference. Result has 149 places, 157 transitions, 2405 flow [2024-11-12 08:30:03,717 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2231, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2405, PETRI_PLACES=149, PETRI_TRANSITIONS=157} [2024-11-12 08:30:03,717 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 125 predicate places. [2024-11-12 08:30:03,717 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 157 transitions, 2405 flow [2024-11-12 08:30:03,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.565217391304348) internal successors, (105), 23 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:30:03,717 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:30:03,717 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:30:03,733 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-12 08:30:03,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-12 08:30:03,918 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:30:03,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:30:03,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1633032449, now seen corresponding path program 7 times [2024-11-12 08:30:03,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:30:03,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319315301] [2024-11-12 08:30:03,919 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:30:03,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:30:03,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:30:04,006 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 08:30:04,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:30:04,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319315301] [2024-11-12 08:30:04,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319315301] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:30:04,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352920788] [2024-11-12 08:30:04,007 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-12 08:30:04,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:30:04,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:30:04,009 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:30:04,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-12 08:30:04,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:30:04,043 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-12 08:30:04,044 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:30:04,103 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 08:30:04,104 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:30:04,268 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 08:30:04,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352920788] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:30:04,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:30:04,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2024-11-12 08:30:04,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460570654] [2024-11-12 08:30:04,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:30:04,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-12 08:30:04,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:30:04,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-12 08:30:04,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2024-11-12 08:30:04,272 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-12 08:30:04,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 157 transitions, 2405 flow. Second operand has 20 states, 20 states have (on average 4.5) internal successors, (90), 20 states have internal predecessors, (90), 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 08:30:04,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:30:04,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-12 08:30:04,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:30:04,966 INFO L124 PetriNetUnfolderBase]: 956/1876 cut-off events. [2024-11-12 08:30:04,966 INFO L125 PetriNetUnfolderBase]: For 17833/17833 co-relation queries the response was YES. [2024-11-12 08:30:04,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10387 conditions, 1876 events. 956/1876 cut-off events. For 17833/17833 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 11454 event pairs, 60 based on Foata normal form. 30/1906 useless extension candidates. Maximal degree in co-relation 10245. Up to 466 conditions per place. [2024-11-12 08:30:04,976 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 93 selfloop transitions, 179 changer transitions 38/311 dead transitions. [2024-11-12 08:30:04,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 311 transitions, 5105 flow [2024-11-12 08:30:04,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-12 08:30:04,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-12 08:30:04,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 210 transitions. [2024-11-12 08:30:04,977 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35353535353535354 [2024-11-12 08:30:04,977 INFO L175 Difference]: Start difference. First operand has 149 places, 157 transitions, 2405 flow. Second operand 27 states and 210 transitions. [2024-11-12 08:30:04,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 311 transitions, 5105 flow [2024-11-12 08:30:05,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 311 transitions, 4926 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-11-12 08:30:05,020 INFO L231 Difference]: Finished difference. Result has 176 places, 237 transitions, 4407 flow [2024-11-12 08:30:05,021 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2304, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=4407, PETRI_PLACES=176, PETRI_TRANSITIONS=237} [2024-11-12 08:30:05,021 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 152 predicate places. [2024-11-12 08:30:05,022 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 237 transitions, 4407 flow [2024-11-12 08:30:05,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.5) internal successors, (90), 20 states have internal predecessors, (90), 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 08:30:05,022 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:30:05,022 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:30:05,035 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-12 08:30:05,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-12 08:30:05,222 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:30:05,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:30:05,223 INFO L85 PathProgramCache]: Analyzing trace with hash -824051139, now seen corresponding path program 8 times [2024-11-12 08:30:05,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:30:05,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643927821] [2024-11-12 08:30:05,224 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:30:05,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:30:05,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:30:05,304 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:05,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:30:05,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643927821] [2024-11-12 08:30:05,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643927821] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:30:05,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552264305] [2024-11-12 08:30:05,304 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 08:30:05,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:30:05,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:30:05,306 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:30:05,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-12 08:30:05,348 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 08:30:05,348 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:30:05,348 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-12 08:30:05,349 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:30:05,433 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:05,434 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:30:05,596 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:05,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552264305] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:30:05,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:30:05,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2024-11-12 08:30:05,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890064008] [2024-11-12 08:30:05,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:30:05,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-12 08:30:05,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:30:05,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-12 08:30:05,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2024-11-12 08:30:05,601 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-12 08:30:05,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 237 transitions, 4407 flow. Second operand has 22 states, 22 states have (on average 4.5) internal successors, (99), 22 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:30:05,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:30:05,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-12 08:30:05,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:30:06,101 INFO L124 PetriNetUnfolderBase]: 1256/2426 cut-off events. [2024-11-12 08:30:06,101 INFO L125 PetriNetUnfolderBase]: For 29695/29695 co-relation queries the response was YES. [2024-11-12 08:30:06,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15468 conditions, 2426 events. 1256/2426 cut-off events. For 29695/29695 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 15560 event pairs, 195 based on Foata normal form. 10/2436 useless extension candidates. Maximal degree in co-relation 15293. Up to 1103 conditions per place. [2024-11-12 08:30:06,114 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 137 selfloop transitions, 146 changer transitions 96/380 dead transitions. [2024-11-12 08:30:06,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 380 transitions, 7645 flow [2024-11-12 08:30:06,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-12 08:30:06,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-12 08:30:06,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 125 transitions. [2024-11-12 08:30:06,115 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-11-12 08:30:06,115 INFO L175 Difference]: Start difference. First operand has 176 places, 237 transitions, 4407 flow. Second operand 16 states and 125 transitions. [2024-11-12 08:30:06,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 380 transitions, 7645 flow [2024-11-12 08:30:06,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 380 transitions, 6939 flow, removed 267 selfloop flow, removed 7 redundant places. [2024-11-12 08:30:06,223 INFO L231 Difference]: Finished difference. Result has 187 places, 253 transitions, 4655 flow [2024-11-12 08:30:06,223 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3958, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4655, PETRI_PLACES=187, PETRI_TRANSITIONS=253} [2024-11-12 08:30:06,224 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 163 predicate places. [2024-11-12 08:30:06,224 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 253 transitions, 4655 flow [2024-11-12 08:30:06,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.5) internal successors, (99), 22 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:30:06,224 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:30:06,224 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:30:06,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-12 08:30:06,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-12 08:30:06,425 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:30:06,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:30:06,425 INFO L85 PathProgramCache]: Analyzing trace with hash -742170367, now seen corresponding path program 9 times [2024-11-12 08:30:06,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:30:06,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657686754] [2024-11-12 08:30:06,425 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:30:06,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:30:06,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:30:06,504 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 08:30:06,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:30:06,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657686754] [2024-11-12 08:30:06,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657686754] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:30:06,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082952527] [2024-11-12 08:30:06,505 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 08:30:06,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:30:06,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:30:06,506 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:30:06,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-12 08:30:06,542 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-12 08:30:06,543 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:30:06,543 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-12 08:30:06,544 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:30:06,598 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 08:30:06,598 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:30:06,813 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 08:30:06,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082952527] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:30:06,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:30:06,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2024-11-12 08:30:06,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854960440] [2024-11-12 08:30:06,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:30:06,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-12 08:30:06,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:30:06,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-12 08:30:06,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-11-12 08:30:06,824 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-12 08:30:06,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 253 transitions, 4655 flow. Second operand has 19 states, 19 states have (on average 4.526315789473684) internal successors, (86), 19 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:30:06,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:30:06,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-12 08:30:06,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:30:07,532 INFO L124 PetriNetUnfolderBase]: 1046/2042 cut-off events. [2024-11-12 08:30:07,532 INFO L125 PetriNetUnfolderBase]: For 25622/25622 co-relation queries the response was YES. [2024-11-12 08:30:07,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12846 conditions, 2042 events. 1046/2042 cut-off events. For 25622/25622 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 12699 event pairs, 63 based on Foata normal form. 38/2080 useless extension candidates. Maximal degree in co-relation 12709. Up to 456 conditions per place. [2024-11-12 08:30:07,546 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 94 selfloop transitions, 187 changer transitions 45/327 dead transitions. [2024-11-12 08:30:07,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 327 transitions, 6047 flow [2024-11-12 08:30:07,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-12 08:30:07,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-12 08:30:07,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 193 transitions. [2024-11-12 08:30:07,547 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3509090909090909 [2024-11-12 08:30:07,547 INFO L175 Difference]: Start difference. First operand has 187 places, 253 transitions, 4655 flow. Second operand 25 states and 193 transitions. [2024-11-12 08:30:07,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 327 transitions, 6047 flow [2024-11-12 08:30:07,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 327 transitions, 5807 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-11-12 08:30:07,627 INFO L231 Difference]: Finished difference. Result has 202 places, 246 transitions, 4745 flow [2024-11-12 08:30:07,628 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=4399, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=4745, PETRI_PLACES=202, PETRI_TRANSITIONS=246} [2024-11-12 08:30:07,628 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 178 predicate places. [2024-11-12 08:30:07,628 INFO L471 AbstractCegarLoop]: Abstraction has has 202 places, 246 transitions, 4745 flow [2024-11-12 08:30:07,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.526315789473684) internal successors, (86), 19 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:30:07,628 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:30:07,628 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:30:07,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-12 08:30:07,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-12 08:30:07,830 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:30:07,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:30:07,830 INFO L85 PathProgramCache]: Analyzing trace with hash 216184659, now seen corresponding path program 10 times [2024-11-12 08:30:07,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:30:07,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490906585] [2024-11-12 08:30:07,830 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:30:07,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:30:07,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:30:07,911 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:07,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:30:07,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490906585] [2024-11-12 08:30:07,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490906585] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:30:07,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252106399] [2024-11-12 08:30:07,912 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-12 08:30:07,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:30:07,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:30:07,914 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:30:07,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-12 08:30:07,952 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-12 08:30:07,952 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:30:07,952 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-12 08:30:07,953 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:30:08,013 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:08,013 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:30:08,161 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:08,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252106399] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:30:08,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:30:08,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2024-11-12 08:30:08,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259070142] [2024-11-12 08:30:08,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:30:08,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-12 08:30:08,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:30:08,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-12 08:30:08,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2024-11-12 08:30:08,167 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-12 08:30:08,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 246 transitions, 4745 flow. Second operand has 21 states, 21 states have (on average 4.523809523809524) internal successors, (95), 21 states have internal predecessors, (95), 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 08:30:08,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:30:08,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-12 08:30:08,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:30:08,863 INFO L124 PetriNetUnfolderBase]: 1264/2530 cut-off events. [2024-11-12 08:30:08,863 INFO L125 PetriNetUnfolderBase]: For 33424/33424 co-relation queries the response was YES. [2024-11-12 08:30:08,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15650 conditions, 2530 events. 1264/2530 cut-off events. For 33424/33424 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 17067 event pairs, 98 based on Foata normal form. 10/2540 useless extension candidates. Maximal degree in co-relation 15477. Up to 594 conditions per place. [2024-11-12 08:30:08,875 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 106 selfloop transitions, 179 changer transitions 108/394 dead transitions. [2024-11-12 08:30:08,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 394 transitions, 7638 flow [2024-11-12 08:30:08,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-12 08:30:08,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-12 08:30:08,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 220 transitions. [2024-11-12 08:30:08,876 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37037037037037035 [2024-11-12 08:30:08,876 INFO L175 Difference]: Start difference. First operand has 202 places, 246 transitions, 4745 flow. Second operand 27 states and 220 transitions. [2024-11-12 08:30:08,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 394 transitions, 7638 flow [2024-11-12 08:30:08,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 394 transitions, 7194 flow, removed 43 selfloop flow, removed 20 redundant places. [2024-11-12 08:30:08,969 INFO L231 Difference]: Finished difference. Result has 209 places, 243 transitions, 4669 flow [2024-11-12 08:30:08,969 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=4417, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=4669, PETRI_PLACES=209, PETRI_TRANSITIONS=243} [2024-11-12 08:30:08,969 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 185 predicate places. [2024-11-12 08:30:08,969 INFO L471 AbstractCegarLoop]: Abstraction has has 209 places, 243 transitions, 4669 flow [2024-11-12 08:30:08,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.523809523809524) internal successors, (95), 21 states have internal predecessors, (95), 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 08:30:08,970 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:30:08,970 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:30:08,982 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-12 08:30:09,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:30:09,170 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:30:09,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:30:09,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1597444717, now seen corresponding path program 11 times [2024-11-12 08:30:09,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:30:09,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825783360] [2024-11-12 08:30:09,171 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:30:09,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:30:09,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:30:09,245 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:09,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:30:09,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825783360] [2024-11-12 08:30:09,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825783360] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:30:09,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785924849] [2024-11-12 08:30:09,246 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-12 08:30:09,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:30:09,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:30:09,248 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:30:09,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-12 08:30:09,285 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 08:30:09,285 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:30:09,286 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-12 08:30:09,287 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:30:09,351 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:09,351 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 08:30:09,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785924849] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:30:09,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 08:30:09,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 15 [2024-11-12 08:30:09,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208580506] [2024-11-12 08:30:09,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:30:09,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 08:30:09,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:30:09,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 08:30:09,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2024-11-12 08:30:09,355 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-12 08:30:09,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 243 transitions, 4669 flow. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 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 08:30:09,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:30:09,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-12 08:30:09,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:30:09,667 INFO L124 PetriNetUnfolderBase]: 1217/2411 cut-off events. [2024-11-12 08:30:09,667 INFO L125 PetriNetUnfolderBase]: For 33363/33363 co-relation queries the response was YES. [2024-11-12 08:30:09,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15525 conditions, 2411 events. 1217/2411 cut-off events. For 33363/33363 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 15994 event pairs, 277 based on Foata normal form. 5/2416 useless extension candidates. Maximal degree in co-relation 15348. Up to 1334 conditions per place. [2024-11-12 08:30:09,683 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 199 selfloop transitions, 132 changer transitions 21/353 dead transitions. [2024-11-12 08:30:09,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 353 transitions, 7455 flow [2024-11-12 08:30:09,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 08:30:09,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-12 08:30:09,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2024-11-12 08:30:09,684 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2024-11-12 08:30:09,684 INFO L175 Difference]: Start difference. First operand has 209 places, 243 transitions, 4669 flow. Second operand 9 states and 86 transitions. [2024-11-12 08:30:09,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 353 transitions, 7455 flow [2024-11-12 08:30:09,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 353 transitions, 6827 flow, removed 104 selfloop flow, removed 13 redundant places. [2024-11-12 08:30:09,800 INFO L231 Difference]: Finished difference. Result has 199 places, 290 transitions, 5693 flow [2024-11-12 08:30:09,801 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=4232, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5693, PETRI_PLACES=199, PETRI_TRANSITIONS=290} [2024-11-12 08:30:09,801 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 175 predicate places. [2024-11-12 08:30:09,801 INFO L471 AbstractCegarLoop]: Abstraction has has 199 places, 290 transitions, 5693 flow [2024-11-12 08:30:09,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 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 08:30:09,801 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:30:09,801 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:30:09,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-12 08:30:10,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:30:10,002 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:30:10,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:30:10,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1367441465, now seen corresponding path program 12 times [2024-11-12 08:30:10,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:30:10,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959831011] [2024-11-12 08:30:10,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:30:10,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:30:10,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:30:10,085 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:10,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:30:10,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959831011] [2024-11-12 08:30:10,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959831011] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:30:10,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248099721] [2024-11-12 08:30:10,085 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-12 08:30:10,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:30:10,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:30:10,087 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:30:10,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-12 08:30:10,120 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-12 08:30:10,121 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:30:10,121 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-12 08:30:10,122 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:30:10,223 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:10,224 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:30:10,381 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:10,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248099721] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:30:10,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:30:10,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2024-11-12 08:30:10,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775310690] [2024-11-12 08:30:10,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:30:10,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-12 08:30:10,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:30:10,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-12 08:30:10,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2024-11-12 08:30:10,391 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-12 08:30:10,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 290 transitions, 5693 flow. Second operand has 24 states, 24 states have (on average 4.583333333333333) internal successors, (110), 24 states have internal predecessors, (110), 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 08:30:10,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:30:10,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-12 08:30:10,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:30:11,195 INFO L124 PetriNetUnfolderBase]: 1400/2753 cut-off events. [2024-11-12 08:30:11,195 INFO L125 PetriNetUnfolderBase]: For 36453/36453 co-relation queries the response was YES. [2024-11-12 08:30:11,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17988 conditions, 2753 events. 1400/2753 cut-off events. For 36453/36453 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 18626 event pairs, 244 based on Foata normal form. 4/2757 useless extension candidates. Maximal degree in co-relation 17789. Up to 1597 conditions per place. [2024-11-12 08:30:11,212 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 188 selfloop transitions, 245 changer transitions 15/449 dead transitions. [2024-11-12 08:30:11,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 449 transitions, 9135 flow [2024-11-12 08:30:11,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-12 08:30:11,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-12 08:30:11,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 220 transitions. [2024-11-12 08:30:11,213 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-11-12 08:30:11,213 INFO L175 Difference]: Start difference. First operand has 199 places, 290 transitions, 5693 flow. Second operand 28 states and 220 transitions. [2024-11-12 08:30:11,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 449 transitions, 9135 flow [2024-11-12 08:30:11,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 449 transitions, 8862 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-11-12 08:30:11,350 INFO L231 Difference]: Finished difference. Result has 226 places, 371 transitions, 8064 flow [2024-11-12 08:30:11,350 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=5465, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=8064, PETRI_PLACES=226, PETRI_TRANSITIONS=371} [2024-11-12 08:30:11,351 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 202 predicate places. [2024-11-12 08:30:11,351 INFO L471 AbstractCegarLoop]: Abstraction has has 226 places, 371 transitions, 8064 flow [2024-11-12 08:30:11,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.583333333333333) internal successors, (110), 24 states have internal predecessors, (110), 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 08:30:11,351 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:30:11,351 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:30:11,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-12 08:30:11,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:30:11,551 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:30:11,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:30:11,552 INFO L85 PathProgramCache]: Analyzing trace with hash -637701067, now seen corresponding path program 13 times [2024-11-12 08:30:11,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:30:11,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439294773] [2024-11-12 08:30:11,552 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:30:11,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:30:11,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:30:11,634 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:11,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:30:11,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439294773] [2024-11-12 08:30:11,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439294773] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:30:11,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428548357] [2024-11-12 08:30:11,634 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-12 08:30:11,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:30:11,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:30:11,635 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:30:11,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-12 08:30:11,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:30:11,670 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-12 08:30:11,671 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:30:11,720 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:11,720 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:30:11,854 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:11,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428548357] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:30:11,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:30:11,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2024-11-12 08:30:11,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730223903] [2024-11-12 08:30:11,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:30:11,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-12 08:30:11,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:30:11,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-12 08:30:11,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2024-11-12 08:30:11,868 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-12 08:30:11,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 371 transitions, 8064 flow. Second operand has 21 states, 21 states have (on average 4.428571428571429) internal successors, (93), 21 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:30:11,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:30:11,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-12 08:30:11,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:30:12,731 INFO L124 PetriNetUnfolderBase]: 1422/2831 cut-off events. [2024-11-12 08:30:12,731 INFO L125 PetriNetUnfolderBase]: For 38592/38592 co-relation queries the response was YES. [2024-11-12 08:30:12,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18795 conditions, 2831 events. 1422/2831 cut-off events. For 38592/38592 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 19544 event pairs, 118 based on Foata normal form. 3/2834 useless extension candidates. Maximal degree in co-relation 18608. Up to 837 conditions per place. [2024-11-12 08:30:12,748 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 97 selfloop transitions, 220 changer transitions 121/439 dead transitions. [2024-11-12 08:30:12,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 439 transitions, 9266 flow [2024-11-12 08:30:12,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-12 08:30:12,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-12 08:30:12,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 216 transitions. [2024-11-12 08:30:12,749 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-11-12 08:30:12,749 INFO L175 Difference]: Start difference. First operand has 226 places, 371 transitions, 8064 flow. Second operand 27 states and 216 transitions. [2024-11-12 08:30:12,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 439 transitions, 9266 flow [2024-11-12 08:30:12,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 439 transitions, 8823 flow, removed 84 selfloop flow, removed 14 redundant places. [2024-11-12 08:30:12,895 INFO L231 Difference]: Finished difference. Result has 240 places, 285 transitions, 6330 flow [2024-11-12 08:30:12,896 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=7629, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=6330, PETRI_PLACES=240, PETRI_TRANSITIONS=285} [2024-11-12 08:30:12,896 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 216 predicate places. [2024-11-12 08:30:12,896 INFO L471 AbstractCegarLoop]: Abstraction has has 240 places, 285 transitions, 6330 flow [2024-11-12 08:30:12,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.428571428571429) internal successors, (93), 21 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:30:12,896 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:30:12,897 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:30:12,909 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-12 08:30:13,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:30:13,097 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:30:13,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:30:13,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1684830047, now seen corresponding path program 14 times [2024-11-12 08:30:13,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:30:13,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740780922] [2024-11-12 08:30:13,098 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:30:13,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:30:13,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:30:13,170 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 08:30:13,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:30:13,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740780922] [2024-11-12 08:30:13,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740780922] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:30:13,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780599865] [2024-11-12 08:30:13,170 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 08:30:13,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:30:13,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:30:13,172 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:30:13,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-12 08:30:13,203 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 08:30:13,203 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:30:13,203 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-12 08:30:13,204 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:30:13,309 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 08:30:13,309 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:30:13,471 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 08:30:13,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780599865] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:30:13,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:30:13,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2024-11-12 08:30:13,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27907348] [2024-11-12 08:30:13,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:30:13,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-12 08:30:13,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:30:13,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-12 08:30:13,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=453, Unknown=0, NotChecked=0, Total=552 [2024-11-12 08:30:13,474 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-12 08:30:13,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 285 transitions, 6330 flow. Second operand has 24 states, 24 states have (on average 4.458333333333333) internal successors, (107), 24 states have internal predecessors, (107), 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 08:30:13,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:30:13,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-12 08:30:13,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:30:14,329 INFO L124 PetriNetUnfolderBase]: 1316/2706 cut-off events. [2024-11-12 08:30:14,329 INFO L125 PetriNetUnfolderBase]: For 37008/37008 co-relation queries the response was YES. [2024-11-12 08:30:14,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17072 conditions, 2706 events. 1316/2706 cut-off events. For 37008/37008 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 18985 event pairs, 302 based on Foata normal form. 7/2713 useless extension candidates. Maximal degree in co-relation 17008. Up to 1697 conditions per place. [2024-11-12 08:30:14,346 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 207 selfloop transitions, 166 changer transitions 18/392 dead transitions. [2024-11-12 08:30:14,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 392 transitions, 8166 flow [2024-11-12 08:30:14,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-12 08:30:14,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-11-12 08:30:14,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 239 transitions. [2024-11-12 08:30:14,347 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35043988269794724 [2024-11-12 08:30:14,347 INFO L175 Difference]: Start difference. First operand has 240 places, 285 transitions, 6330 flow. Second operand 31 states and 239 transitions. [2024-11-12 08:30:14,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 392 transitions, 8166 flow [2024-11-12 08:30:14,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 392 transitions, 7468 flow, removed 32 selfloop flow, removed 30 redundant places. [2024-11-12 08:30:14,501 INFO L231 Difference]: Finished difference. Result has 224 places, 300 transitions, 6413 flow [2024-11-12 08:30:14,501 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=5726, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=6413, PETRI_PLACES=224, PETRI_TRANSITIONS=300} [2024-11-12 08:30:14,501 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 200 predicate places. [2024-11-12 08:30:14,501 INFO L471 AbstractCegarLoop]: Abstraction has has 224 places, 300 transitions, 6413 flow [2024-11-12 08:30:14,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.458333333333333) internal successors, (107), 24 states have internal predecessors, (107), 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 08:30:14,501 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:30:14,501 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:30:14,513 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-12 08:30:14,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:30:14,702 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:30:14,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:30:14,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1365323339, now seen corresponding path program 15 times [2024-11-12 08:30:14,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:30:14,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776037445] [2024-11-12 08:30:14,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:30:14,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:30:14,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:30:14,770 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 08:30:14,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:30:14,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776037445] [2024-11-12 08:30:14,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776037445] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:30:14,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340609709] [2024-11-12 08:30:14,771 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 08:30:14,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:30:14,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:30:14,772 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:30:14,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-12 08:30:14,803 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-12 08:30:14,804 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:30:14,804 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-12 08:30:14,805 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:30:14,881 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 08:30:14,881 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:30:14,998 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 08:30:14,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340609709] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:30:14,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:30:14,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-11-12 08:30:14,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017486262] [2024-11-12 08:30:14,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:30:14,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-12 08:30:14,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:30:14,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-12 08:30:14,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2024-11-12 08:30:15,001 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-12 08:30:15,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 300 transitions, 6413 flow. Second operand has 23 states, 23 states have (on average 4.434782608695652) internal successors, (102), 23 states have internal predecessors, (102), 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 08:30:15,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:30:15,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-12 08:30:15,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:30:15,747 INFO L124 PetriNetUnfolderBase]: 1327/2715 cut-off events. [2024-11-12 08:30:15,747 INFO L125 PetriNetUnfolderBase]: For 33927/33927 co-relation queries the response was YES. [2024-11-12 08:30:15,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16797 conditions, 2715 events. 1327/2715 cut-off events. For 33927/33927 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 18940 event pairs, 161 based on Foata normal form. 6/2721 useless extension candidates. Maximal degree in co-relation 16735. Up to 1083 conditions per place. [2024-11-12 08:30:15,769 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 130 selfloop transitions, 199 changer transitions 35/365 dead transitions. [2024-11-12 08:30:15,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 365 transitions, 8055 flow [2024-11-12 08:30:15,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-12 08:30:15,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-12 08:30:15,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 129 transitions. [2024-11-12 08:30:15,770 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-11-12 08:30:15,770 INFO L175 Difference]: Start difference. First operand has 224 places, 300 transitions, 6413 flow. Second operand 16 states and 129 transitions. [2024-11-12 08:30:15,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 365 transitions, 8055 flow [2024-11-12 08:30:15,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 365 transitions, 7947 flow, removed 21 selfloop flow, removed 16 redundant places. [2024-11-12 08:30:15,900 INFO L231 Difference]: Finished difference. Result has 223 places, 302 transitions, 6808 flow [2024-11-12 08:30:15,900 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=6324, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=6808, PETRI_PLACES=223, PETRI_TRANSITIONS=302} [2024-11-12 08:30:15,901 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 199 predicate places. [2024-11-12 08:30:15,901 INFO L471 AbstractCegarLoop]: Abstraction has has 223 places, 302 transitions, 6808 flow [2024-11-12 08:30:15,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.434782608695652) internal successors, (102), 23 states have internal predecessors, (102), 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 08:30:15,901 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:30:15,901 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:30:15,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-12 08:30:16,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:30:16,102 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:30:16,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:30:16,102 INFO L85 PathProgramCache]: Analyzing trace with hash -2122993005, now seen corresponding path program 16 times [2024-11-12 08:30:16,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:30:16,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481581241] [2024-11-12 08:30:16,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:30:16,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:30:16,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:30:16,175 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:16,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:30:16,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481581241] [2024-11-12 08:30:16,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481581241] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:30:16,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315603030] [2024-11-12 08:30:16,175 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-12 08:30:16,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:30:16,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:30:16,177 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:30:16,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-12 08:30:16,209 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-12 08:30:16,209 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:30:16,209 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-12 08:30:16,210 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:30:16,274 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:16,274 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:30:16,408 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:16,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315603030] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:30:16,409 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:30:16,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2024-11-12 08:30:16,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406985353] [2024-11-12 08:30:16,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:30:16,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-12 08:30:16,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:30:16,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-12 08:30:16,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2024-11-12 08:30:16,411 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-12 08:30:16,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 302 transitions, 6808 flow. Second operand has 22 states, 22 states have (on average 4.5) internal successors, (99), 22 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:30:16,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:30:16,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-12 08:30:16,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:30:16,935 INFO L124 PetriNetUnfolderBase]: 1388/2822 cut-off events. [2024-11-12 08:30:16,935 INFO L125 PetriNetUnfolderBase]: For 38723/38723 co-relation queries the response was YES. [2024-11-12 08:30:16,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18598 conditions, 2822 events. 1388/2822 cut-off events. For 38723/38723 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 19757 event pairs, 331 based on Foata normal form. 3/2825 useless extension candidates. Maximal degree in co-relation 18531. Up to 1872 conditions per place. [2024-11-12 08:30:16,955 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 186 selfloop transitions, 186 changer transitions 18/391 dead transitions. [2024-11-12 08:30:16,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 391 transitions, 9263 flow [2024-11-12 08:30:16,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-12 08:30:16,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-12 08:30:16,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 128 transitions. [2024-11-12 08:30:16,957 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3878787878787879 [2024-11-12 08:30:16,957 INFO L175 Difference]: Start difference. First operand has 223 places, 302 transitions, 6808 flow. Second operand 15 states and 128 transitions. [2024-11-12 08:30:16,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 391 transitions, 9263 flow [2024-11-12 08:30:17,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 391 transitions, 8818 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-11-12 08:30:17,098 INFO L231 Difference]: Finished difference. Result has 232 places, 340 transitions, 7996 flow [2024-11-12 08:30:17,098 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=6427, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=7996, PETRI_PLACES=232, PETRI_TRANSITIONS=340} [2024-11-12 08:30:17,098 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 208 predicate places. [2024-11-12 08:30:17,098 INFO L471 AbstractCegarLoop]: Abstraction has has 232 places, 340 transitions, 7996 flow [2024-11-12 08:30:17,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.5) internal successors, (99), 22 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:30:17,099 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:30:17,099 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:30:17,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-12 08:30:17,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-11-12 08:30:17,299 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:30:17,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:30:17,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1484228171, now seen corresponding path program 17 times [2024-11-12 08:30:17,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:30:17,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60755743] [2024-11-12 08:30:17,300 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:30:17,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:30:17,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:30:17,369 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 08:30:17,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:30:17,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60755743] [2024-11-12 08:30:17,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60755743] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:30:17,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816221906] [2024-11-12 08:30:17,369 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-12 08:30:17,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:30:17,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:30:17,370 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:30:17,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-12 08:30:17,402 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 08:30:17,403 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:30:17,403 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-12 08:30:17,404 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:30:17,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:17,468 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 08:30:17,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816221906] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:30:17,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 08:30:17,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 15 [2024-11-12 08:30:17,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147468475] [2024-11-12 08:30:17,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:30:17,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 08:30:17,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:30:17,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 08:30:17,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2024-11-12 08:30:17,470 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-12 08:30:17,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 340 transitions, 7996 flow. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 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 08:30:17,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:30:17,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-12 08:30:17,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:30:17,829 INFO L124 PetriNetUnfolderBase]: 1348/2720 cut-off events. [2024-11-12 08:30:17,830 INFO L125 PetriNetUnfolderBase]: For 37814/37814 co-relation queries the response was YES. [2024-11-12 08:30:17,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18171 conditions, 2720 events. 1348/2720 cut-off events. For 37814/37814 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 18660 event pairs, 177 based on Foata normal form. 3/2723 useless extension candidates. Maximal degree in co-relation 18102. Up to 1098 conditions per place. [2024-11-12 08:30:17,847 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 141 selfloop transitions, 198 changer transitions 20/360 dead transitions. [2024-11-12 08:30:17,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 360 transitions, 8910 flow [2024-11-12 08:30:17,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 08:30:17,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-12 08:30:17,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 79 transitions. [2024-11-12 08:30:17,848 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.398989898989899 [2024-11-12 08:30:17,848 INFO L175 Difference]: Start difference. First operand has 232 places, 340 transitions, 7996 flow. Second operand 9 states and 79 transitions. [2024-11-12 08:30:17,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 360 transitions, 8910 flow [2024-11-12 08:30:17,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 360 transitions, 8779 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-11-12 08:30:17,991 INFO L231 Difference]: Finished difference. Result has 231 places, 330 transitions, 8139 flow [2024-11-12 08:30:17,991 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=7865, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8139, PETRI_PLACES=231, PETRI_TRANSITIONS=330} [2024-11-12 08:30:17,991 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 207 predicate places. [2024-11-12 08:30:17,991 INFO L471 AbstractCegarLoop]: Abstraction has has 231 places, 330 transitions, 8139 flow [2024-11-12 08:30:17,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 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 08:30:17,991 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:30:17,991 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:30:18,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-12 08:30:18,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-11-12 08:30:18,192 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:30:18,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:30:18,192 INFO L85 PathProgramCache]: Analyzing trace with hash -2045560365, now seen corresponding path program 18 times [2024-11-12 08:30:18,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:30:18,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186542779] [2024-11-12 08:30:18,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:30:18,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:30:18,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:30:18,266 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 08:30:18,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:30:18,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186542779] [2024-11-12 08:30:18,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186542779] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:30:18,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014692358] [2024-11-12 08:30:18,266 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-12 08:30:18,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:30:18,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:30:18,268 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:30:18,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-12 08:30:18,301 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-12 08:30:18,301 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:30:18,302 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-12 08:30:18,302 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:30:18,383 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 08:30:18,384 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:30:18,534 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 08:30:18,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014692358] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:30:18,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:30:18,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-11-12 08:30:18,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443389185] [2024-11-12 08:30:18,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:30:18,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-12 08:30:18,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:30:18,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-12 08:30:18,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2024-11-12 08:30:18,538 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-12 08:30:18,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 330 transitions, 8139 flow. Second operand has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 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 08:30:18,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:30:18,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-12 08:30:18,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:30:19,723 INFO L124 PetriNetUnfolderBase]: 2192/4398 cut-off events. [2024-11-12 08:30:19,723 INFO L125 PetriNetUnfolderBase]: For 63024/63024 co-relation queries the response was YES. [2024-11-12 08:30:19,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29993 conditions, 4398 events. 2192/4398 cut-off events. For 63024/63024 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 33377 event pairs, 110 based on Foata normal form. 23/4421 useless extension candidates. Maximal degree in co-relation 29923. Up to 921 conditions per place. [2024-11-12 08:30:19,750 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 190 selfloop transitions, 283 changer transitions 145/619 dead transitions. [2024-11-12 08:30:19,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 619 transitions, 15031 flow [2024-11-12 08:30:19,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-12 08:30:19,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-12 08:30:19,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 235 transitions. [2024-11-12 08:30:19,751 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3560606060606061 [2024-11-12 08:30:19,751 INFO L175 Difference]: Start difference. First operand has 231 places, 330 transitions, 8139 flow. Second operand 30 states and 235 transitions. [2024-11-12 08:30:19,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 619 transitions, 15031 flow [2024-11-12 08:30:20,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 619 transitions, 14035 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-11-12 08:30:20,078 INFO L231 Difference]: Finished difference. Result has 255 places, 392 transitions, 10147 flow [2024-11-12 08:30:20,079 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=7556, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=10147, PETRI_PLACES=255, PETRI_TRANSITIONS=392} [2024-11-12 08:30:20,079 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 231 predicate places. [2024-11-12 08:30:20,079 INFO L471 AbstractCegarLoop]: Abstraction has has 255 places, 392 transitions, 10147 flow [2024-11-12 08:30:20,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 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 08:30:20,079 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:30:20,079 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:30:20,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-12 08:30:20,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-11-12 08:30:20,280 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:30:20,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:30:20,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1584946891, now seen corresponding path program 19 times [2024-11-12 08:30:20,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:30:20,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228248470] [2024-11-12 08:30:20,281 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:30:20,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:30:20,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:30:20,362 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:20,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:30:20,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228248470] [2024-11-12 08:30:20,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228248470] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:30:20,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764205040] [2024-11-12 08:30:20,362 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-12 08:30:20,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:30:20,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:30:20,364 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:30:20,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-12 08:30:20,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:30:20,401 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-12 08:30:20,401 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:30:20,476 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:20,477 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:30:20,641 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:20,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764205040] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:30:20,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:30:20,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2024-11-12 08:30:20,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424357464] [2024-11-12 08:30:20,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:30:20,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-12 08:30:20,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:30:20,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-12 08:30:20,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2024-11-12 08:30:20,645 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-12 08:30:20,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 392 transitions, 10147 flow. Second operand has 22 states, 22 states have (on average 4.454545454545454) internal successors, (98), 22 states have internal predecessors, (98), 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 08:30:20,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:30:20,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-12 08:30:20,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:30:21,258 INFO L124 PetriNetUnfolderBase]: 1443/3034 cut-off events. [2024-11-12 08:30:21,258 INFO L125 PetriNetUnfolderBase]: For 46365/46365 co-relation queries the response was YES. [2024-11-12 08:30:21,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21667 conditions, 3034 events. 1443/3034 cut-off events. For 46365/46365 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 22645 event pairs, 268 based on Foata normal form. 6/3040 useless extension candidates. Maximal degree in co-relation 21592. Up to 1725 conditions per place. [2024-11-12 08:30:21,280 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 185 selfloop transitions, 228 changer transitions 31/445 dead transitions. [2024-11-12 08:30:21,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 445 transitions, 11723 flow [2024-11-12 08:30:21,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-12 08:30:21,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-12 08:30:21,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 113 transitions. [2024-11-12 08:30:21,281 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36688311688311687 [2024-11-12 08:30:21,281 INFO L175 Difference]: Start difference. First operand has 255 places, 392 transitions, 10147 flow. Second operand 14 states and 113 transitions. [2024-11-12 08:30:21,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 445 transitions, 11723 flow [2024-11-12 08:30:21,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 445 transitions, 10954 flow, removed 42 selfloop flow, removed 15 redundant places. [2024-11-12 08:30:21,542 INFO L231 Difference]: Finished difference. Result has 232 places, 380 transitions, 9578 flow [2024-11-12 08:30:21,543 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=9445, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=220, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=9578, PETRI_PLACES=232, PETRI_TRANSITIONS=380} [2024-11-12 08:30:21,543 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 208 predicate places. [2024-11-12 08:30:21,543 INFO L471 AbstractCegarLoop]: Abstraction has has 232 places, 380 transitions, 9578 flow [2024-11-12 08:30:21,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.454545454545454) internal successors, (98), 22 states have internal predecessors, (98), 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 08:30:21,543 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:30:21,543 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:30:21,556 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-12 08:30:21,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:30:21,744 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:30:21,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:30:21,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1857285963, now seen corresponding path program 20 times [2024-11-12 08:30:21,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:30:21,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088693815] [2024-11-12 08:30:21,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:30:21,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:30:21,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:30:21,812 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 08:30:21,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:30:21,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088693815] [2024-11-12 08:30:21,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088693815] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:30:21,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564883480] [2024-11-12 08:30:21,813 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 08:30:21,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:30:21,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:30:21,814 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:30:21,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-12 08:30:21,845 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 08:30:21,845 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:30:21,845 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-12 08:30:21,846 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:30:21,926 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 08:30:21,926 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:30:22,076 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 08:30:22,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564883480] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:30:22,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:30:22,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2024-11-12 08:30:22,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611863196] [2024-11-12 08:30:22,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:30:22,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-12 08:30:22,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:30:22,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-12 08:30:22,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2024-11-12 08:30:22,080 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-12 08:30:22,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 380 transitions, 9578 flow. Second operand has 22 states, 22 states have (on average 4.5) internal successors, (99), 22 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:30:22,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:30:22,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-12 08:30:22,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:30:23,016 INFO L124 PetriNetUnfolderBase]: 1440/3025 cut-off events. [2024-11-12 08:30:23,017 INFO L125 PetriNetUnfolderBase]: For 42281/42281 co-relation queries the response was YES. [2024-11-12 08:30:23,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20780 conditions, 3025 events. 1440/3025 cut-off events. For 42281/42281 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 22475 event pairs, 298 based on Foata normal form. 6/3031 useless extension candidates. Maximal degree in co-relation 20712. Up to 1855 conditions per place. [2024-11-12 08:30:23,046 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 164 selfloop transitions, 233 changer transitions 56/454 dead transitions. [2024-11-12 08:30:23,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 454 transitions, 11345 flow [2024-11-12 08:30:23,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-12 08:30:23,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-12 08:30:23,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 172 transitions. [2024-11-12 08:30:23,048 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.33992094861660077 [2024-11-12 08:30:23,048 INFO L175 Difference]: Start difference. First operand has 232 places, 380 transitions, 9578 flow. Second operand 23 states and 172 transitions. [2024-11-12 08:30:23,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 454 transitions, 11345 flow [2024-11-12 08:30:23,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 454 transitions, 10882 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-11-12 08:30:23,264 INFO L231 Difference]: Finished difference. Result has 252 places, 378 transitions, 9588 flow [2024-11-12 08:30:23,265 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=9127, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=218, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=9588, PETRI_PLACES=252, PETRI_TRANSITIONS=378} [2024-11-12 08:30:23,265 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 228 predicate places. [2024-11-12 08:30:23,265 INFO L471 AbstractCegarLoop]: Abstraction has has 252 places, 378 transitions, 9588 flow [2024-11-12 08:30:23,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.5) internal successors, (99), 22 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:30:23,265 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:30:23,265 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:30:23,277 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-12 08:30:23,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-11-12 08:30:23,466 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:30:23,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:30:23,467 INFO L85 PathProgramCache]: Analyzing trace with hash 544711093, now seen corresponding path program 21 times [2024-11-12 08:30:23,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:30:23,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290837928] [2024-11-12 08:30:23,467 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:30:23,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:30:23,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:30:23,555 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:23,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:30:23,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290837928] [2024-11-12 08:30:23,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290837928] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:30:23,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316428140] [2024-11-12 08:30:23,555 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 08:30:23,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:30:23,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:30:23,556 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:30:23,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-12 08:30:23,589 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-12 08:30:23,590 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:30:23,590 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-12 08:30:23,591 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:30:23,679 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:23,680 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:30:23,810 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:23,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316428140] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:30:23,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:30:23,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2024-11-12 08:30:23,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308188341] [2024-11-12 08:30:23,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:30:23,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-12 08:30:23,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:30:23,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-12 08:30:23,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2024-11-12 08:30:23,813 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-12 08:30:23,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 378 transitions, 9588 flow. Second operand has 24 states, 24 states have (on average 4.416666666666667) internal successors, (106), 24 states have internal predecessors, (106), 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 08:30:23,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:30:23,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-12 08:30:23,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:30:24,675 INFO L124 PetriNetUnfolderBase]: 1562/3214 cut-off events. [2024-11-12 08:30:24,675 INFO L125 PetriNetUnfolderBase]: For 51071/51071 co-relation queries the response was YES. [2024-11-12 08:30:24,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22940 conditions, 3214 events. 1562/3214 cut-off events. For 51071/51071 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 23662 event pairs, 220 based on Foata normal form. 34/3248 useless extension candidates. Maximal degree in co-relation 22862. Up to 1341 conditions per place. [2024-11-12 08:30:24,701 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 177 selfloop transitions, 276 changer transitions 68/522 dead transitions. [2024-11-12 08:30:24,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 522 transitions, 13139 flow [2024-11-12 08:30:24,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-12 08:30:24,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-12 08:30:24,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 204 transitions. [2024-11-12 08:30:24,702 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3434343434343434 [2024-11-12 08:30:24,702 INFO L175 Difference]: Start difference. First operand has 252 places, 378 transitions, 9588 flow. Second operand 27 states and 204 transitions. [2024-11-12 08:30:24,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 522 transitions, 13139 flow [2024-11-12 08:30:24,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 522 transitions, 12852 flow, removed 33 selfloop flow, removed 15 redundant places. [2024-11-12 08:30:24,952 INFO L231 Difference]: Finished difference. Result has 260 places, 396 transitions, 10423 flow [2024-11-12 08:30:24,953 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=9160, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=10423, PETRI_PLACES=260, PETRI_TRANSITIONS=396} [2024-11-12 08:30:24,953 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 236 predicate places. [2024-11-12 08:30:24,953 INFO L471 AbstractCegarLoop]: Abstraction has has 260 places, 396 transitions, 10423 flow [2024-11-12 08:30:24,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.416666666666667) internal successors, (106), 24 states have internal predecessors, (106), 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 08:30:24,954 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:30:24,954 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:30:24,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-12 08:30:25,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:30:25,155 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:30:25,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:30:25,155 INFO L85 PathProgramCache]: Analyzing trace with hash 915459509, now seen corresponding path program 22 times [2024-11-12 08:30:25,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:30:25,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146687298] [2024-11-12 08:30:25,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:30:25,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:30:25,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:30:25,233 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 08:30:25,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:30:25,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146687298] [2024-11-12 08:30:25,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146687298] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:30:25,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275402956] [2024-11-12 08:30:25,234 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-12 08:30:25,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:30:25,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:30:25,237 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:30:25,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-12 08:30:25,273 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-12 08:30:25,273 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:30:25,274 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-12 08:30:25,275 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:30:25,343 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 08:30:25,343 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:30:25,462 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 08:30:25,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275402956] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:30:25,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:30:25,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-11-12 08:30:25,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736139874] [2024-11-12 08:30:25,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:30:25,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-12 08:30:25,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:30:25,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-12 08:30:25,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2024-11-12 08:30:25,465 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-12 08:30:25,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 396 transitions, 10423 flow. Second operand has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 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 08:30:25,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:30:25,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-12 08:30:25,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:30:26,085 INFO L124 PetriNetUnfolderBase]: 1495/3095 cut-off events. [2024-11-12 08:30:26,085 INFO L125 PetriNetUnfolderBase]: For 45894/45894 co-relation queries the response was YES. [2024-11-12 08:30:26,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21995 conditions, 3095 events. 1495/3095 cut-off events. For 45894/45894 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 22839 event pairs, 138 based on Foata normal form. 16/3111 useless extension candidates. Maximal degree in co-relation 21917. Up to 835 conditions per place. [2024-11-12 08:30:26,105 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 157 selfloop transitions, 149 changer transitions 146/453 dead transitions. [2024-11-12 08:30:26,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 453 transitions, 12036 flow [2024-11-12 08:30:26,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-12 08:30:26,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-12 08:30:26,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 120 transitions. [2024-11-12 08:30:26,106 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-11-12 08:30:26,106 INFO L175 Difference]: Start difference. First operand has 260 places, 396 transitions, 10423 flow. Second operand 15 states and 120 transitions. [2024-11-12 08:30:26,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 453 transitions, 12036 flow [2024-11-12 08:30:26,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 453 transitions, 11681 flow, removed 84 selfloop flow, removed 9 redundant places. [2024-11-12 08:30:26,315 INFO L231 Difference]: Finished difference. Result has 263 places, 280 transitions, 6817 flow [2024-11-12 08:30:26,315 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=10096, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=6817, PETRI_PLACES=263, PETRI_TRANSITIONS=280} [2024-11-12 08:30:26,315 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 239 predicate places. [2024-11-12 08:30:26,315 INFO L471 AbstractCegarLoop]: Abstraction has has 263 places, 280 transitions, 6817 flow [2024-11-12 08:30:26,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 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 08:30:26,315 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:30:26,315 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:30:26,327 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-12 08:30:26,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2024-11-12 08:30:26,516 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:30:26,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:30:26,516 INFO L85 PathProgramCache]: Analyzing trace with hash 104451691, now seen corresponding path program 23 times [2024-11-12 08:30:26,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:30:26,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896052068] [2024-11-12 08:30:26,517 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:30:26,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:30:26,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:30:26,586 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 08:30:26,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:30:26,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896052068] [2024-11-12 08:30:26,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896052068] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:30:26,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150573280] [2024-11-12 08:30:26,587 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-12 08:30:26,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:30:26,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:30:26,588 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:30:26,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-12 08:30:26,620 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 08:30:26,620 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:30:26,620 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-12 08:30:26,621 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:30:26,675 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:26,675 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 08:30:26,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150573280] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:30:26,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 08:30:26,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 15 [2024-11-12 08:30:26,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728893961] [2024-11-12 08:30:26,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:30:26,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 08:30:26,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:30:26,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 08:30:26,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2024-11-12 08:30:26,681 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-12 08:30:26,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 280 transitions, 6817 flow. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 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 08:30:26,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:30:26,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-12 08:30:26,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:30:26,990 INFO L124 PetriNetUnfolderBase]: 990/2138 cut-off events. [2024-11-12 08:30:26,990 INFO L125 PetriNetUnfolderBase]: For 31895/31895 co-relation queries the response was YES. [2024-11-12 08:30:27,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13984 conditions, 2138 events. 990/2138 cut-off events. For 31895/31895 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 14993 event pairs, 207 based on Foata normal form. 7/2145 useless extension candidates. Maximal degree in co-relation 13907. Up to 1065 conditions per place. [2024-11-12 08:30:27,004 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 128 selfloop transitions, 87 changer transitions 84/300 dead transitions. [2024-11-12 08:30:27,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 300 transitions, 7558 flow [2024-11-12 08:30:27,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 08:30:27,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-12 08:30:27,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 79 transitions. [2024-11-12 08:30:27,005 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.398989898989899 [2024-11-12 08:30:27,005 INFO L175 Difference]: Start difference. First operand has 263 places, 280 transitions, 6817 flow. Second operand 9 states and 79 transitions. [2024-11-12 08:30:27,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 300 transitions, 7558 flow [2024-11-12 08:30:27,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 300 transitions, 6371 flow, removed 59 selfloop flow, removed 33 redundant places. [2024-11-12 08:30:27,111 INFO L231 Difference]: Finished difference. Result has 229 places, 207 transitions, 4336 flow [2024-11-12 08:30:27,111 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=5636, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4336, PETRI_PLACES=229, PETRI_TRANSITIONS=207} [2024-11-12 08:30:27,112 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 205 predicate places. [2024-11-12 08:30:27,112 INFO L471 AbstractCegarLoop]: Abstraction has has 229 places, 207 transitions, 4336 flow [2024-11-12 08:30:27,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 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 08:30:27,112 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:30:27,112 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:30:27,125 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-12 08:30:27,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:30:27,313 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:30:27,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:30:27,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1306040339, now seen corresponding path program 24 times [2024-11-12 08:30:27,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:30:27,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219632254] [2024-11-12 08:30:27,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:30:27,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:30:27,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:30:27,382 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 08:30:27,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:30:27,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219632254] [2024-11-12 08:30:27,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219632254] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:30:27,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798804497] [2024-11-12 08:30:27,383 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-12 08:30:27,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:30:27,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:30:27,384 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:30:27,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-12 08:30:27,415 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-12 08:30:27,415 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:30:27,415 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-12 08:30:27,416 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:30:27,488 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 08:30:27,488 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:30:27,628 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 08:30:27,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798804497] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:30:27,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:30:27,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-11-12 08:30:27,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761005845] [2024-11-12 08:30:27,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:30:27,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-12 08:30:27,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:30:27,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-12 08:30:27,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2024-11-12 08:30:27,631 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-12 08:30:27,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 207 transitions, 4336 flow. Second operand has 23 states, 23 states have (on average 4.521739130434782) internal successors, (104), 23 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 08:30:27,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:30:27,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-12 08:30:27,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:30:27,955 INFO L124 PetriNetUnfolderBase]: 727/1686 cut-off events. [2024-11-12 08:30:27,955 INFO L125 PetriNetUnfolderBase]: For 17539/17539 co-relation queries the response was YES. [2024-11-12 08:30:27,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9341 conditions, 1686 events. 727/1686 cut-off events. For 17539/17539 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 11799 event pairs, 179 based on Foata normal form. 4/1690 useless extension candidates. Maximal degree in co-relation 9276. Up to 901 conditions per place. [2024-11-12 08:30:27,966 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 114 selfloop transitions, 101 changer transitions 19/235 dead transitions. [2024-11-12 08:30:27,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 235 transitions, 4965 flow [2024-11-12 08:30:27,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-12 08:30:27,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-12 08:30:27,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 98 transitions. [2024-11-12 08:30:27,967 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3712121212121212 [2024-11-12 08:30:27,967 INFO L175 Difference]: Start difference. First operand has 229 places, 207 transitions, 4336 flow. Second operand 12 states and 98 transitions. [2024-11-12 08:30:27,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 235 transitions, 4965 flow [2024-11-12 08:30:28,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 235 transitions, 4564 flow, removed 21 selfloop flow, removed 20 redundant places. [2024-11-12 08:30:28,021 INFO L231 Difference]: Finished difference. Result has 209 places, 198 transitions, 3993 flow [2024-11-12 08:30:28,021 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3943, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3993, PETRI_PLACES=209, PETRI_TRANSITIONS=198} [2024-11-12 08:30:28,022 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 185 predicate places. [2024-11-12 08:30:28,022 INFO L471 AbstractCegarLoop]: Abstraction has has 209 places, 198 transitions, 3993 flow [2024-11-12 08:30:28,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.521739130434782) internal successors, (104), 23 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 08:30:28,022 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:30:28,022 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:30:28,034 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-12 08:30:28,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:30:28,223 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:30:28,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:30:28,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1884829229, now seen corresponding path program 25 times [2024-11-12 08:30:28,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:30:28,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803006989] [2024-11-12 08:30:28,223 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:30:28,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:30:28,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:30:28,310 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:28,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:30:28,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803006989] [2024-11-12 08:30:28,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803006989] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:30:28,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696749073] [2024-11-12 08:30:28,311 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-12 08:30:28,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:30:28,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:30:28,313 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:30:28,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-12 08:30:28,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:30:28,347 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-12 08:30:28,348 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:30:28,403 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:28,403 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:30:28,532 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:28,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696749073] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:30:28,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:30:28,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2024-11-12 08:30:28,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70969419] [2024-11-12 08:30:28,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:30:28,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-12 08:30:28,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:30:28,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-12 08:30:28,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2024-11-12 08:30:28,535 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-12 08:30:28,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 198 transitions, 3993 flow. Second operand has 21 states, 21 states have (on average 4.523809523809524) internal successors, (95), 21 states have internal predecessors, (95), 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 08:30:28,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:30:28,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-12 08:30:28,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:30:29,129 INFO L124 PetriNetUnfolderBase]: 747/1681 cut-off events. [2024-11-12 08:30:29,129 INFO L125 PetriNetUnfolderBase]: For 17674/17674 co-relation queries the response was YES. [2024-11-12 08:30:29,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9649 conditions, 1681 events. 747/1681 cut-off events. For 17674/17674 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 11575 event pairs, 111 based on Foata normal form. 5/1686 useless extension candidates. Maximal degree in co-relation 9591. Up to 634 conditions per place. [2024-11-12 08:30:29,137 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 97 selfloop transitions, 152 changer transitions 45/295 dead transitions. [2024-11-12 08:30:29,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 295 transitions, 5665 flow [2024-11-12 08:30:29,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-12 08:30:29,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-12 08:30:29,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 200 transitions. [2024-11-12 08:30:29,138 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34965034965034963 [2024-11-12 08:30:29,138 INFO L175 Difference]: Start difference. First operand has 209 places, 198 transitions, 3993 flow. Second operand 26 states and 200 transitions. [2024-11-12 08:30:29,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 295 transitions, 5665 flow [2024-11-12 08:30:29,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 295 transitions, 5363 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-11-12 08:30:29,181 INFO L231 Difference]: Finished difference. Result has 228 places, 215 transitions, 4571 flow [2024-11-12 08:30:29,182 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3741, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=4571, PETRI_PLACES=228, PETRI_TRANSITIONS=215} [2024-11-12 08:30:29,182 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 204 predicate places. [2024-11-12 08:30:29,182 INFO L471 AbstractCegarLoop]: Abstraction has has 228 places, 215 transitions, 4571 flow [2024-11-12 08:30:29,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.523809523809524) internal successors, (95), 21 states have internal predecessors, (95), 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 08:30:29,182 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:30:29,182 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:30:29,194 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-11-12 08:30:29,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:30:29,383 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:30:29,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:30:29,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1847071499, now seen corresponding path program 26 times [2024-11-12 08:30:29,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:30:29,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119143801] [2024-11-12 08:30:29,383 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:30:29,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:30:29,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:30:29,444 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:29,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:30:29,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119143801] [2024-11-12 08:30:29,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119143801] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:30:29,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185863397] [2024-11-12 08:30:29,445 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 08:30:29,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:30:29,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:30:29,446 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:30:29,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-12 08:30:29,477 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 08:30:29,477 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:30:29,477 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-12 08:30:29,478 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:30:29,528 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:29,528 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:30:29,652 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:29,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185863397] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:30:29,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:30:29,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2024-11-12 08:30:29,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551041935] [2024-11-12 08:30:29,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:30:29,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-12 08:30:29,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:30:29,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-12 08:30:29,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2024-11-12 08:30:29,654 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-12 08:30:29,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 215 transitions, 4571 flow. Second operand has 21 states, 21 states have (on average 4.523809523809524) internal successors, (95), 21 states have internal predecessors, (95), 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 08:30:29,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:30:29,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-12 08:30:29,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:30:30,130 INFO L124 PetriNetUnfolderBase]: 641/1432 cut-off events. [2024-11-12 08:30:30,130 INFO L125 PetriNetUnfolderBase]: For 18586/18586 co-relation queries the response was YES. [2024-11-12 08:30:30,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8853 conditions, 1432 events. 641/1432 cut-off events. For 18586/18586 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 9383 event pairs, 105 based on Foata normal form. 2/1434 useless extension candidates. Maximal degree in co-relation 8785. Up to 618 conditions per place. [2024-11-12 08:30:30,139 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 89 selfloop transitions, 148 changer transitions 23/261 dead transitions. [2024-11-12 08:30:30,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 261 transitions, 5299 flow [2024-11-12 08:30:30,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-12 08:30:30,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-12 08:30:30,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 163 transitions. [2024-11-12 08:30:30,140 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3528138528138528 [2024-11-12 08:30:30,140 INFO L175 Difference]: Start difference. First operand has 228 places, 215 transitions, 4571 flow. Second operand 21 states and 163 transitions. [2024-11-12 08:30:30,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 261 transitions, 5299 flow [2024-11-12 08:30:30,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 261 transitions, 5042 flow, removed 40 selfloop flow, removed 14 redundant places. [2024-11-12 08:30:30,199 INFO L231 Difference]: Finished difference. Result has 223 places, 210 transitions, 4561 flow [2024-11-12 08:30:30,199 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=4324, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=4561, PETRI_PLACES=223, PETRI_TRANSITIONS=210} [2024-11-12 08:30:30,199 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 199 predicate places. [2024-11-12 08:30:30,199 INFO L471 AbstractCegarLoop]: Abstraction has has 223 places, 210 transitions, 4561 flow [2024-11-12 08:30:30,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.523809523809524) internal successors, (95), 21 states have internal predecessors, (95), 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 08:30:30,199 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:30:30,200 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:30:30,211 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-12 08:30:30,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2024-11-12 08:30:30,400 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:30:30,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:30:30,401 INFO L85 PathProgramCache]: Analyzing trace with hash 500103635, now seen corresponding path program 27 times [2024-11-12 08:30:30,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:30:30,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048284669] [2024-11-12 08:30:30,401 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:30:30,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:30:30,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:30:30,470 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 08:30:30,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:30:30,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048284669] [2024-11-12 08:30:30,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048284669] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:30:30,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885582268] [2024-11-12 08:30:30,471 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 08:30:30,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:30:30,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:30:30,473 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:30:30,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-12 08:30:30,506 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-12 08:30:30,507 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:30:30,507 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-12 08:30:30,508 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:30:30,576 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 08:30:30,576 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:30:30,699 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 08:30:30,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885582268] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:30:30,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:30:30,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-11-12 08:30:30,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907896839] [2024-11-12 08:30:30,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:30:30,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-12 08:30:30,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:30:30,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-12 08:30:30,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2024-11-12 08:30:30,702 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-12 08:30:30,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 210 transitions, 4561 flow. Second operand has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 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 08:30:30,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:30:30,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-12 08:30:30,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:30:31,030 INFO L124 PetriNetUnfolderBase]: 604/1331 cut-off events. [2024-11-12 08:30:31,030 INFO L125 PetriNetUnfolderBase]: For 18059/18059 co-relation queries the response was YES. [2024-11-12 08:30:31,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8503 conditions, 1331 events. 604/1331 cut-off events. For 18059/18059 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 8406 event pairs, 17 based on Foata normal form. 8/1339 useless extension candidates. Maximal degree in co-relation 8440. Up to 383 conditions per place. [2024-11-12 08:30:31,037 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 83 selfloop transitions, 98 changer transitions 52/234 dead transitions. [2024-11-12 08:30:31,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 234 transitions, 5156 flow [2024-11-12 08:30:31,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-12 08:30:31,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-12 08:30:31,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 101 transitions. [2024-11-12 08:30:31,038 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.32792207792207795 [2024-11-12 08:30:31,038 INFO L175 Difference]: Start difference. First operand has 223 places, 210 transitions, 4561 flow. Second operand 14 states and 101 transitions. [2024-11-12 08:30:31,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 234 transitions, 5156 flow [2024-11-12 08:30:31,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 234 transitions, 4840 flow, removed 11 selfloop flow, removed 19 redundant places. [2024-11-12 08:30:31,090 INFO L231 Difference]: Finished difference. Result has 211 places, 170 transitions, 3624 flow [2024-11-12 08:30:31,091 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=4245, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3624, PETRI_PLACES=211, PETRI_TRANSITIONS=170} [2024-11-12 08:30:31,091 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 187 predicate places. [2024-11-12 08:30:31,091 INFO L471 AbstractCegarLoop]: Abstraction has has 211 places, 170 transitions, 3624 flow [2024-11-12 08:30:31,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 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 08:30:31,091 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:30:31,091 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:30:31,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-11-12 08:30:31,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:30:31,292 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:30:31,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:30:31,293 INFO L85 PathProgramCache]: Analyzing trace with hash -663865139, now seen corresponding path program 28 times [2024-11-12 08:30:31,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:30:31,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695200549] [2024-11-12 08:30:31,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:30:31,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:30:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:30:31,321 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:31,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:30:31,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695200549] [2024-11-12 08:30:31,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695200549] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:30:31,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107878343] [2024-11-12 08:30:31,321 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-12 08:30:31,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:30:31,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:30:31,323 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:30:31,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-12 08:30:31,355 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-12 08:30:31,356 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:30:31,356 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-12 08:30:31,356 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:30:31,364 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:31,364 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:30:31,397 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:31,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107878343] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:30:31,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:30:31,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-12 08:30:31,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625691336] [2024-11-12 08:30:31,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:30:31,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-12 08:30:31,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:30:31,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-12 08:30:31,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-12 08:30:31,410 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-12 08:30:31,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 170 transitions, 3624 flow. Second operand has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 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 08:30:31,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:30:31,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-12 08:30:31,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:30:31,619 INFO L124 PetriNetUnfolderBase]: 338/838 cut-off events. [2024-11-12 08:30:31,619 INFO L125 PetriNetUnfolderBase]: For 15221/15221 co-relation queries the response was YES. [2024-11-12 08:30:31,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5844 conditions, 838 events. 338/838 cut-off events. For 15221/15221 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5194 event pairs, 76 based on Foata normal form. 20/840 useless extension candidates. Maximal degree in co-relation 5783. Up to 292 conditions per place. [2024-11-12 08:30:31,625 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 104 selfloop transitions, 59 changer transitions 6/214 dead transitions. [2024-11-12 08:30:31,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 214 transitions, 4228 flow [2024-11-12 08:30:31,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-12 08:30:31,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-12 08:30:31,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 162 transitions. [2024-11-12 08:30:31,625 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4602272727272727 [2024-11-12 08:30:31,625 INFO L175 Difference]: Start difference. First operand has 211 places, 170 transitions, 3624 flow. Second operand 16 states and 162 transitions. [2024-11-12 08:30:31,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 214 transitions, 4228 flow [2024-11-12 08:30:31,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 214 transitions, 3693 flow, removed 41 selfloop flow, removed 29 redundant places. [2024-11-12 08:30:31,663 INFO L231 Difference]: Finished difference. Result has 185 places, 164 transitions, 3163 flow [2024-11-12 08:30:31,664 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2779, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3163, PETRI_PLACES=185, PETRI_TRANSITIONS=164} [2024-11-12 08:30:31,664 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 161 predicate places. [2024-11-12 08:30:31,664 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 164 transitions, 3163 flow [2024-11-12 08:30:31,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 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 08:30:31,664 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:30:31,664 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:30:31,677 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-12 08:30:31,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:30:31,865 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:30:31,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:30:31,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1519890287, now seen corresponding path program 29 times [2024-11-12 08:30:31,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:30:31,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390199562] [2024-11-12 08:30:31,866 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:30:31,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:30:31,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:30:31,891 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:31,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:30:31,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390199562] [2024-11-12 08:30:31,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390199562] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:30:31,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128478935] [2024-11-12 08:30:31,891 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-12 08:30:31,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:30:31,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:30:31,892 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:30:31,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-12 08:30:31,923 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-12 08:30:31,923 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:30:31,924 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-12 08:30:31,924 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:30:31,930 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:31,930 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:30:31,961 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:31,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128478935] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:30:31,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:30:31,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2024-11-12 08:30:31,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813570952] [2024-11-12 08:30:31,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:30:31,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 08:30:31,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:30:31,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 08:30:31,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-12 08:30:31,974 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-12 08:30:31,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 164 transitions, 3163 flow. Second operand has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 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 08:30:31,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:30:31,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-12 08:30:31,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:30:32,154 INFO L124 PetriNetUnfolderBase]: 324/796 cut-off events. [2024-11-12 08:30:32,155 INFO L125 PetriNetUnfolderBase]: For 11123/11123 co-relation queries the response was YES. [2024-11-12 08:30:32,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5100 conditions, 796 events. 324/796 cut-off events. For 11123/11123 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4778 event pairs, 88 based on Foata normal form. 8/782 useless extension candidates. Maximal degree in co-relation 5049. Up to 355 conditions per place. [2024-11-12 08:30:32,159 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 92 selfloop transitions, 52 changer transitions 3/190 dead transitions. [2024-11-12 08:30:32,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 190 transitions, 3575 flow [2024-11-12 08:30:32,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-12 08:30:32,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-12 08:30:32,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 115 transitions. [2024-11-12 08:30:32,160 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4356060606060606 [2024-11-12 08:30:32,160 INFO L175 Difference]: Start difference. First operand has 185 places, 164 transitions, 3163 flow. Second operand 12 states and 115 transitions. [2024-11-12 08:30:32,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 190 transitions, 3575 flow [2024-11-12 08:30:32,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 190 transitions, 3287 flow, removed 34 selfloop flow, removed 11 redundant places. [2024-11-12 08:30:32,189 INFO L231 Difference]: Finished difference. Result has 184 places, 165 transitions, 2964 flow [2024-11-12 08:30:32,189 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2810, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2964, PETRI_PLACES=184, PETRI_TRANSITIONS=165} [2024-11-12 08:30:32,189 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 160 predicate places. [2024-11-12 08:30:32,189 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 165 transitions, 2964 flow [2024-11-12 08:30:32,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 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 08:30:32,189 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:30:32,190 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:30:32,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-11-12 08:30:32,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-11-12 08:30:32,390 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:30:32,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:30:32,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1427390210, now seen corresponding path program 30 times [2024-11-12 08:30:32,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:30:32,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156073797] [2024-11-12 08:30:32,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:30:32,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:30:32,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:30:32,419 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:32,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:30:32,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156073797] [2024-11-12 08:30:32,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156073797] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:30:32,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309875556] [2024-11-12 08:30:32,419 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-12 08:30:32,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:30:32,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:30:32,421 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:30:32,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-12 08:30:32,454 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-12 08:30:32,454 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:30:32,454 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-12 08:30:32,455 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:30:32,460 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:32,461 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:30:32,492 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:32,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309875556] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:30:32,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:30:32,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-12 08:30:32,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439579683] [2024-11-12 08:30:32,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:30:32,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-12 08:30:32,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:30:32,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-12 08:30:32,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-12 08:30:32,511 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-11-12 08:30:32,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 165 transitions, 2964 flow. Second operand has 11 states, 11 states have (on average 7.0) internal successors, (77), 11 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:30:32,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:30:32,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-11-12 08:30:32,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:30:32,696 INFO L124 PetriNetUnfolderBase]: 343/846 cut-off events. [2024-11-12 08:30:32,697 INFO L125 PetriNetUnfolderBase]: For 10169/10169 co-relation queries the response was YES. [2024-11-12 08:30:32,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5210 conditions, 846 events. 343/846 cut-off events. For 10169/10169 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 5148 event pairs, 99 based on Foata normal form. 8/828 useless extension candidates. Maximal degree in co-relation 5158. Up to 338 conditions per place. [2024-11-12 08:30:32,702 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 106 selfloop transitions, 51 changer transitions 2/198 dead transitions. [2024-11-12 08:30:32,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 198 transitions, 3546 flow [2024-11-12 08:30:32,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-12 08:30:32,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-12 08:30:32,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 137 transitions. [2024-11-12 08:30:32,703 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4448051948051948 [2024-11-12 08:30:32,703 INFO L175 Difference]: Start difference. First operand has 184 places, 165 transitions, 2964 flow. Second operand 14 states and 137 transitions. [2024-11-12 08:30:32,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 198 transitions, 3546 flow [2024-11-12 08:30:32,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 198 transitions, 3405 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-11-12 08:30:32,730 INFO L231 Difference]: Finished difference. Result has 189 places, 167 transitions, 3008 flow [2024-11-12 08:30:32,730 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2708, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3008, PETRI_PLACES=189, PETRI_TRANSITIONS=167} [2024-11-12 08:30:32,731 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 165 predicate places. [2024-11-12 08:30:32,731 INFO L471 AbstractCegarLoop]: Abstraction has has 189 places, 167 transitions, 3008 flow [2024-11-12 08:30:32,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.0) internal successors, (77), 11 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:30:32,731 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:30:32,731 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:30:32,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-11-12 08:30:32,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2024-11-12 08:30:32,931 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:30:32,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:30:32,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1157546044, now seen corresponding path program 31 times [2024-11-12 08:30:32,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:30:32,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094749639] [2024-11-12 08:30:32,932 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:30:32,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:30:32,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:30:33,009 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:33,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:30:33,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094749639] [2024-11-12 08:30:33,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094749639] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:30:33,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015435548] [2024-11-12 08:30:33,010 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-12 08:30:33,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:30:33,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:30:33,011 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:30:33,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-12 08:30:33,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:30:33,043 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-12 08:30:33,044 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:30:33,131 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:33,131 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:30:33,338 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:33,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015435548] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:30:33,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:30:33,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 27 [2024-11-12 08:30:33,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091155523] [2024-11-12 08:30:33,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:30:33,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-12 08:30:33,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:30:33,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-12 08:30:33,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=636, Unknown=0, NotChecked=0, Total=756 [2024-11-12 08:30:33,342 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-12 08:30:33,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 167 transitions, 3008 flow. Second operand has 28 states, 28 states have (on average 4.535714285714286) internal successors, (127), 28 states have internal predecessors, (127), 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 08:30:33,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:30:33,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-12 08:30:33,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:30:33,719 INFO L124 PetriNetUnfolderBase]: 530/1166 cut-off events. [2024-11-12 08:30:33,719 INFO L125 PetriNetUnfolderBase]: For 11912/11912 co-relation queries the response was YES. [2024-11-12 08:30:33,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7056 conditions, 1166 events. 530/1166 cut-off events. For 11912/11912 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 6956 event pairs, 6 based on Foata normal form. 1/1167 useless extension candidates. Maximal degree in co-relation 7000. Up to 357 conditions per place. [2024-11-12 08:30:33,726 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 122 selfloop transitions, 97 changer transitions 12/232 dead transitions. [2024-11-12 08:30:33,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 232 transitions, 4212 flow [2024-11-12 08:30:33,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-12 08:30:33,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-12 08:30:33,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 118 transitions. [2024-11-12 08:30:33,727 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3575757575757576 [2024-11-12 08:30:33,727 INFO L175 Difference]: Start difference. First operand has 189 places, 167 transitions, 3008 flow. Second operand 15 states and 118 transitions. [2024-11-12 08:30:33,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 232 transitions, 4212 flow [2024-11-12 08:30:33,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 232 transitions, 4153 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-11-12 08:30:33,762 INFO L231 Difference]: Finished difference. Result has 201 places, 184 transitions, 3584 flow [2024-11-12 08:30:33,762 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2951, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3584, PETRI_PLACES=201, PETRI_TRANSITIONS=184} [2024-11-12 08:30:33,762 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 177 predicate places. [2024-11-12 08:30:33,762 INFO L471 AbstractCegarLoop]: Abstraction has has 201 places, 184 transitions, 3584 flow [2024-11-12 08:30:33,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.535714285714286) internal successors, (127), 28 states have internal predecessors, (127), 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 08:30:33,763 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:30:33,763 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:30:33,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2024-11-12 08:30:33,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:30:33,964 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:30:33,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:30:33,965 INFO L85 PathProgramCache]: Analyzing trace with hash 719275290, now seen corresponding path program 32 times [2024-11-12 08:30:33,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:30:33,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973936577] [2024-11-12 08:30:33,965 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:30:33,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:30:33,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:30:34,049 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:34,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:30:34,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973936577] [2024-11-12 08:30:34,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973936577] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:30:34,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277192935] [2024-11-12 08:30:34,049 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 08:30:34,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:30:34,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:30:34,050 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:30:34,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-12 08:30:34,083 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 08:30:34,084 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:30:34,084 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-12 08:30:34,085 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:30:34,194 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:34,194 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:30:34,387 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:34,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277192935] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:30:34,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:30:34,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 27 [2024-11-12 08:30:34,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120736097] [2024-11-12 08:30:34,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:30:34,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-12 08:30:34,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:30:34,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-12 08:30:34,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=625, Unknown=0, NotChecked=0, Total=756 [2024-11-12 08:30:34,390 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-12 08:30:34,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 184 transitions, 3584 flow. Second operand has 28 states, 28 states have (on average 4.357142857142857) internal successors, (122), 28 states have internal predecessors, (122), 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 08:30:34,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:30:34,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-12 08:30:34,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:30:34,741 INFO L124 PetriNetUnfolderBase]: 512/1111 cut-off events. [2024-11-12 08:30:34,741 INFO L125 PetriNetUnfolderBase]: For 13199/13199 co-relation queries the response was YES. [2024-11-12 08:30:34,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7219 conditions, 1111 events. 512/1111 cut-off events. For 13199/13199 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 6494 event pairs, 6 based on Foata normal form. 8/1119 useless extension candidates. Maximal degree in co-relation 7160. Up to 257 conditions per place. [2024-11-12 08:30:34,748 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 104 selfloop transitions, 71 changer transitions 45/221 dead transitions. [2024-11-12 08:30:34,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 221 transitions, 4309 flow [2024-11-12 08:30:34,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-12 08:30:34,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-12 08:30:34,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 108 transitions. [2024-11-12 08:30:34,749 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35064935064935066 [2024-11-12 08:30:34,749 INFO L175 Difference]: Start difference. First operand has 201 places, 184 transitions, 3584 flow. Second operand 14 states and 108 transitions. [2024-11-12 08:30:34,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 221 transitions, 4309 flow [2024-11-12 08:30:34,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 221 transitions, 4251 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-11-12 08:30:34,788 INFO L231 Difference]: Finished difference. Result has 203 places, 151 transitions, 2894 flow [2024-11-12 08:30:34,788 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3526, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2894, PETRI_PLACES=203, PETRI_TRANSITIONS=151} [2024-11-12 08:30:34,788 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 179 predicate places. [2024-11-12 08:30:34,788 INFO L471 AbstractCegarLoop]: Abstraction has has 203 places, 151 transitions, 2894 flow [2024-11-12 08:30:34,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.357142857142857) internal successors, (122), 28 states have internal predecessors, (122), 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 08:30:34,789 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:30:34,789 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:30:34,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2024-11-12 08:30:34,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:30:34,989 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:30:34,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:30:34,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1672507302, now seen corresponding path program 33 times [2024-11-12 08:30:34,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:30:34,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887703005] [2024-11-12 08:30:34,990 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:30:34,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:30:34,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:30:35,067 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:35,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:30:35,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887703005] [2024-11-12 08:30:35,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887703005] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:30:35,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161368956] [2024-11-12 08:30:35,068 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 08:30:35,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:30:35,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:30:35,069 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:30:35,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-12 08:30:35,100 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-12 08:30:35,100 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:30:35,101 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-12 08:30:35,101 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:30:35,186 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:35,186 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:30:35,351 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:35,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161368956] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:30:35,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:30:35,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 27 [2024-11-12 08:30:35,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981456629] [2024-11-12 08:30:35,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:30:35,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-12 08:30:35,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:30:35,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-12 08:30:35,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=630, Unknown=0, NotChecked=0, Total=756 [2024-11-12 08:30:35,355 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-12 08:30:35,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 151 transitions, 2894 flow. Second operand has 28 states, 28 states have (on average 4.392857142857143) internal successors, (123), 28 states have internal predecessors, (123), 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 08:30:35,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:30:35,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-12 08:30:35,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:30:35,730 INFO L124 PetriNetUnfolderBase]: 370/779 cut-off events. [2024-11-12 08:30:35,731 INFO L125 PetriNetUnfolderBase]: For 10544/10544 co-relation queries the response was YES. [2024-11-12 08:30:35,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5334 conditions, 779 events. 370/779 cut-off events. For 10544/10544 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3953 event pairs, 3 based on Foata normal form. 1/780 useless extension candidates. Maximal degree in co-relation 5274. Up to 222 conditions per place. [2024-11-12 08:30:35,736 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 101 selfloop transitions, 64 changer transitions 21/187 dead transitions. [2024-11-12 08:30:35,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 187 transitions, 3448 flow [2024-11-12 08:30:35,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-12 08:30:35,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-12 08:30:35,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 112 transitions. [2024-11-12 08:30:35,737 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3393939393939394 [2024-11-12 08:30:35,737 INFO L175 Difference]: Start difference. First operand has 203 places, 151 transitions, 2894 flow. Second operand 15 states and 112 transitions. [2024-11-12 08:30:35,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 187 transitions, 3448 flow [2024-11-12 08:30:35,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 187 transitions, 3228 flow, removed 5 selfloop flow, removed 15 redundant places. [2024-11-12 08:30:35,764 INFO L231 Difference]: Finished difference. Result has 197 places, 143 transitions, 2712 flow [2024-11-12 08:30:35,764 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2676, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2712, PETRI_PLACES=197, PETRI_TRANSITIONS=143} [2024-11-12 08:30:35,764 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 173 predicate places. [2024-11-12 08:30:35,764 INFO L471 AbstractCegarLoop]: Abstraction has has 197 places, 143 transitions, 2712 flow [2024-11-12 08:30:35,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.392857142857143) internal successors, (123), 28 states have internal predecessors, (123), 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 08:30:35,764 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:30:35,764 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:30:35,776 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-12 08:30:35,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:30:35,965 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:30:35,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:30:35,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1254505092, now seen corresponding path program 34 times [2024-11-12 08:30:35,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:30:35,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918856055] [2024-11-12 08:30:35,966 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:30:35,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:30:35,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:30:36,046 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:36,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:30:36,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918856055] [2024-11-12 08:30:36,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918856055] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:30:36,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144612410] [2024-11-12 08:30:36,046 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-12 08:30:36,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:30:36,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:30:36,047 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:30:36,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-12 08:30:36,079 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-12 08:30:36,079 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:30:36,080 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-12 08:30:36,080 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:30:36,176 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:36,176 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:30:36,328 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:36,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144612410] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:30:36,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:30:36,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 27 [2024-11-12 08:30:36,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440593141] [2024-11-12 08:30:36,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:30:36,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-12 08:30:36,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:30:36,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-12 08:30:36,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=619, Unknown=0, NotChecked=0, Total=756 [2024-11-12 08:30:36,333 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-12 08:30:36,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 143 transitions, 2712 flow. Second operand has 28 states, 28 states have (on average 4.357142857142857) internal successors, (122), 28 states have internal predecessors, (122), 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 08:30:36,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:30:36,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-12 08:30:36,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:30:36,592 INFO L124 PetriNetUnfolderBase]: 327/685 cut-off events. [2024-11-12 08:30:36,593 INFO L125 PetriNetUnfolderBase]: For 9075/9075 co-relation queries the response was YES. [2024-11-12 08:30:36,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4731 conditions, 685 events. 327/685 cut-off events. For 9075/9075 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3347 event pairs, 3 based on Foata normal form. 5/690 useless extension candidates. Maximal degree in co-relation 4673. Up to 157 conditions per place. [2024-11-12 08:30:36,597 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 58 selfloop transitions, 31 changer transitions 82/172 dead transitions. [2024-11-12 08:30:36,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 172 transitions, 3175 flow [2024-11-12 08:30:36,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-12 08:30:36,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-12 08:30:36,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 101 transitions. [2024-11-12 08:30:36,597 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.32792207792207795 [2024-11-12 08:30:36,598 INFO L175 Difference]: Start difference. First operand has 197 places, 143 transitions, 2712 flow. Second operand 14 states and 101 transitions. [2024-11-12 08:30:36,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 172 transitions, 3175 flow [2024-11-12 08:30:36,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 172 transitions, 2895 flow, removed 8 selfloop flow, removed 20 redundant places. [2024-11-12 08:30:36,621 INFO L231 Difference]: Finished difference. Result has 181 places, 80 transitions, 1319 flow [2024-11-12 08:30:36,622 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2432, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1319, PETRI_PLACES=181, PETRI_TRANSITIONS=80} [2024-11-12 08:30:36,623 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 157 predicate places. [2024-11-12 08:30:36,623 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 80 transitions, 1319 flow [2024-11-12 08:30:36,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.357142857142857) internal successors, (122), 28 states have internal predecessors, (122), 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 08:30:36,623 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:30:36,623 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:30:36,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2024-11-12 08:30:36,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2024-11-12 08:30:36,824 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:30:36,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:30:36,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1201540014, now seen corresponding path program 35 times [2024-11-12 08:30:36,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:30:36,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914834195] [2024-11-12 08:30:36,825 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:30:36,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:30:36,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:30:36,919 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:36,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:30:36,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914834195] [2024-11-12 08:30:36,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914834195] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:30:36,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241898761] [2024-11-12 08:30:36,919 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-12 08:30:36,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:30:36,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:30:36,921 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:30:36,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-12 08:30:36,957 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-12 08:30:36,957 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:30:36,957 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-12 08:30:36,958 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:30:37,033 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 08:30:37,033 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 08:30:37,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241898761] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:30:37,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 08:30:37,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 17 [2024-11-12 08:30:37,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692950275] [2024-11-12 08:30:37,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:30:37,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 08:30:37,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:30:37,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 08:30:37,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2024-11-12 08:30:37,036 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-12 08:30:37,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 80 transitions, 1319 flow. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 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 08:30:37,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:30:37,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-12 08:30:37,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:30:37,128 INFO L124 PetriNetUnfolderBase]: 151/345 cut-off events. [2024-11-12 08:30:37,128 INFO L125 PetriNetUnfolderBase]: For 3546/3546 co-relation queries the response was YES. [2024-11-12 08:30:37,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2178 conditions, 345 events. 151/345 cut-off events. For 3546/3546 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1419 event pairs, 13 based on Foata normal form. 4/349 useless extension candidates. Maximal degree in co-relation 2124. Up to 88 conditions per place. [2024-11-12 08:30:37,130 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 45 selfloop transitions, 15 changer transitions 32/93 dead transitions. [2024-11-12 08:30:37,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 93 transitions, 1537 flow [2024-11-12 08:30:37,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 08:30:37,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-12 08:30:37,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 66 transitions. [2024-11-12 08:30:37,131 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-11-12 08:30:37,131 INFO L175 Difference]: Start difference. First operand has 181 places, 80 transitions, 1319 flow. Second operand 9 states and 66 transitions. [2024-11-12 08:30:37,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 93 transitions, 1537 flow [2024-11-12 08:30:37,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 93 transitions, 1169 flow, removed 13 selfloop flow, removed 35 redundant places. [2024-11-12 08:30:37,141 INFO L231 Difference]: Finished difference. Result has 129 places, 56 transitions, 602 flow [2024-11-12 08:30:37,141 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=955, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=602, PETRI_PLACES=129, PETRI_TRANSITIONS=56} [2024-11-12 08:30:37,142 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 105 predicate places. [2024-11-12 08:30:37,142 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 56 transitions, 602 flow [2024-11-12 08:30:37,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 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 08:30:37,142 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:30:37,142 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:30:37,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2024-11-12 08:30:37,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2024-11-12 08:30:37,347 INFO L396 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:30:37,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:30:37,347 INFO L85 PathProgramCache]: Analyzing trace with hash -293067900, now seen corresponding path program 36 times [2024-11-12 08:30:37,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:30:37,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914266514] [2024-11-12 08:30:37,348 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:30:37,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:30:37,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:30:37,442 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:37,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:30:37,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914266514] [2024-11-12 08:30:37,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914266514] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:30:37,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599813716] [2024-11-12 08:30:37,442 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-12 08:30:37,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:30:37,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:30:37,443 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:30:37,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-12 08:30:37,478 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-12 08:30:37,478 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:30:37,479 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-12 08:30:37,480 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:30:37,570 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:37,571 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:30:37,748 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:37,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599813716] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:30:37,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:30:37,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 26 [2024-11-12 08:30:37,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720455390] [2024-11-12 08:30:37,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:30:37,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-12 08:30:37,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:30:37,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-12 08:30:37,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=576, Unknown=0, NotChecked=0, Total=702 [2024-11-12 08:30:37,759 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-12 08:30:37,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 56 transitions, 602 flow. Second operand has 27 states, 27 states have (on average 4.444444444444445) internal successors, (120), 27 states have internal predecessors, (120), 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 08:30:37,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:30:37,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-12 08:30:37,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:30:37,988 INFO L124 PetriNetUnfolderBase]: 88/201 cut-off events. [2024-11-12 08:30:37,988 INFO L125 PetriNetUnfolderBase]: For 1243/1243 co-relation queries the response was YES. [2024-11-12 08:30:37,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1085 conditions, 201 events. 88/201 cut-off events. For 1243/1243 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 615 event pairs, 19 based on Foata normal form. 1/202 useless extension candidates. Maximal degree in co-relation 1045. Up to 59 conditions per place. [2024-11-12 08:30:37,990 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 32 selfloop transitions, 9 changer transitions 39/81 dead transitions. [2024-11-12 08:30:37,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 81 transitions, 841 flow [2024-11-12 08:30:37,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-12 08:30:37,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-12 08:30:37,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 110 transitions. [2024-11-12 08:30:37,990 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.29411764705882354 [2024-11-12 08:30:37,990 INFO L175 Difference]: Start difference. First operand has 129 places, 56 transitions, 602 flow. Second operand 17 states and 110 transitions. [2024-11-12 08:30:37,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 81 transitions, 841 flow [2024-11-12 08:30:37,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 81 transitions, 676 flow, removed 10 selfloop flow, removed 22 redundant places. [2024-11-12 08:30:37,994 INFO L231 Difference]: Finished difference. Result has 111 places, 37 transitions, 288 flow [2024-11-12 08:30:37,994 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=288, PETRI_PLACES=111, PETRI_TRANSITIONS=37} [2024-11-12 08:30:37,994 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 87 predicate places. [2024-11-12 08:30:37,994 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 37 transitions, 288 flow [2024-11-12 08:30:37,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.444444444444445) internal successors, (120), 27 states have internal predecessors, (120), 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 08:30:37,994 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:30:37,995 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:30:38,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2024-11-12 08:30:38,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2024-11-12 08:30:38,195 INFO L396 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:30:38,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:30:38,196 INFO L85 PathProgramCache]: Analyzing trace with hash 633256474, now seen corresponding path program 37 times [2024-11-12 08:30:38,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:30:38,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380756341] [2024-11-12 08:30:38,196 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:30:38,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:30:38,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:30:38,273 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:38,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:30:38,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380756341] [2024-11-12 08:30:38,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380756341] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:30:38,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967715694] [2024-11-12 08:30:38,273 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-12 08:30:38,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:30:38,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:30:38,274 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:30:38,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-12 08:30:38,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:30:38,306 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-12 08:30:38,306 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:30:38,396 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:38,396 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:30:38,571 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:30:38,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967715694] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:30:38,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:30:38,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 27 [2024-11-12 08:30:38,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002949202] [2024-11-12 08:30:38,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:30:38,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-12 08:30:38,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:30:38,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-12 08:30:38,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=627, Unknown=0, NotChecked=0, Total=756 [2024-11-12 08:30:38,575 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-11-12 08:30:38,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 37 transitions, 288 flow. Second operand has 28 states, 28 states have (on average 4.357142857142857) internal successors, (122), 28 states have internal predecessors, (122), 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 08:30:38,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:30:38,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-11-12 08:30:38,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:30:38,785 INFO L124 PetriNetUnfolderBase]: 47/111 cut-off events. [2024-11-12 08:30:38,785 INFO L125 PetriNetUnfolderBase]: For 407/407 co-relation queries the response was YES. [2024-11-12 08:30:38,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 528 conditions, 111 events. 47/111 cut-off events. For 407/407 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 235 event pairs, 5 based on Foata normal form. 1/112 useless extension candidates. Maximal degree in co-relation 495. Up to 27 conditions per place. [2024-11-12 08:30:38,786 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 0 selfloop transitions, 0 changer transitions 46/46 dead transitions. [2024-11-12 08:30:38,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 46 transitions, 396 flow [2024-11-12 08:30:38,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-12 08:30:38,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-12 08:30:38,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 75 transitions. [2024-11-12 08:30:38,786 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.26223776223776224 [2024-11-12 08:30:38,786 INFO L175 Difference]: Start difference. First operand has 111 places, 37 transitions, 288 flow. Second operand 13 states and 75 transitions. [2024-11-12 08:30:38,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 46 transitions, 396 flow [2024-11-12 08:30:38,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 46 transitions, 339 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-11-12 08:30:38,788 INFO L231 Difference]: Finished difference. Result has 84 places, 0 transitions, 0 flow [2024-11-12 08:30:38,788 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=0, PETRI_PLACES=84, PETRI_TRANSITIONS=0} [2024-11-12 08:30:38,788 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 60 predicate places. [2024-11-12 08:30:38,788 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 0 transitions, 0 flow [2024-11-12 08:30:38,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.357142857142857) internal successors, (122), 28 states have internal predecessors, (122), 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 08:30:38,790 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2024-11-12 08:30:38,791 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2024-11-12 08:30:38,791 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-11-12 08:30:38,803 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-11-12 08:30:38,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:30:38,991 INFO L421 BasicCegarLoop]: Path program histogram: [37, 20, 5, 5] [2024-11-12 08:30:38,994 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-12 08:30:38,994 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-12 08:30:38,998 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 08:30:38 BasicIcfg [2024-11-12 08:30:38,998 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-12 08:30:38,998 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-12 08:30:38,998 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-12 08:30:38,998 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-12 08:30:38,999 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:29:47" (3/4) ... [2024-11-12 08:30:39,000 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-12 08:30:39,003 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-12 08:30:39,003 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-12 08:30:39,005 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 42 nodes and edges [2024-11-12 08:30:39,005 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-11-12 08:30:39,005 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-12 08:30:39,005 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-12 08:30:39,084 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-12 08:30:39,084 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-12 08:30:39,084 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-12 08:30:39,085 INFO L158 Benchmark]: Toolchain (without parser) took 52121.05ms. Allocated memory was 161.5MB in the beginning and 880.8MB in the end (delta: 719.3MB). Free memory was 92.2MB in the beginning and 542.7MB in the end (delta: -450.5MB). Peak memory consumption was 270.8MB. Max. memory is 16.1GB. [2024-11-12 08:30:39,085 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 115.3MB. Free memory is still 76.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-12 08:30:39,085 INFO L158 Benchmark]: CACSL2BoogieTranslator took 259.03ms. Allocated memory is still 161.5MB. Free memory was 91.9MB in the beginning and 129.1MB in the end (delta: -37.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-12 08:30:39,085 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.75ms. Allocated memory is still 161.5MB. Free memory was 129.1MB in the beginning and 127.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-12 08:30:39,085 INFO L158 Benchmark]: Boogie Preprocessor took 26.11ms. Allocated memory is still 161.5MB. Free memory was 127.7MB in the beginning and 125.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-12 08:30:39,086 INFO L158 Benchmark]: RCFGBuilder took 344.95ms. Allocated memory is still 161.5MB. Free memory was 125.8MB in the beginning and 107.0MB in the end (delta: 18.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-12 08:30:39,086 INFO L158 Benchmark]: TraceAbstraction took 51376.53ms. Allocated memory was 161.5MB in the beginning and 880.8MB in the end (delta: 719.3MB). Free memory was 106.2MB in the beginning and 546.9MB in the end (delta: -440.7MB). Peak memory consumption was 279.2MB. Max. memory is 16.1GB. [2024-11-12 08:30:39,086 INFO L158 Benchmark]: Witness Printer took 86.18ms. Allocated memory is still 880.8MB. Free memory was 546.9MB in the beginning and 542.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-12 08:30:39,087 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 115.3MB. Free memory is still 76.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 259.03ms. Allocated memory is still 161.5MB. Free memory was 91.9MB in the beginning and 129.1MB in the end (delta: -37.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.75ms. Allocated memory is still 161.5MB. Free memory was 129.1MB in the beginning and 127.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 26.11ms. Allocated memory is still 161.5MB. Free memory was 127.7MB in the beginning and 125.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 344.95ms. Allocated memory is still 161.5MB. Free memory was 125.8MB in the beginning and 107.0MB in the end (delta: 18.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 51376.53ms. Allocated memory was 161.5MB in the beginning and 880.8MB in the end (delta: 719.3MB). Free memory was 106.2MB in the beginning and 546.9MB in the end (delta: -440.7MB). Peak memory consumption was 279.2MB. Max. memory is 16.1GB. * Witness Printer took 86.18ms. Allocated memory is still 880.8MB. Free memory was 546.9MB in the beginning and 542.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 74]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 33 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 51.3s, OverallIterations: 67, TraceHistogramMax: 2, PathProgramHistogramMax: 37, EmptinessCheckTime: 0.0s, AutomataDifference: 28.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3556 SdHoareTripleChecker+Valid, 10.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3500 mSDsluCounter, 58 SdHoareTripleChecker+Invalid, 8.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 47 mSDsCounter, 777 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 27271 IncrementalHoareTripleChecker+Invalid, 28048 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 777 mSolverCounterUnsat, 11 mSDtfsCounter, 27271 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2543 GetRequests, 1125 SyntacticMatches, 8 SemanticMatches, 1410 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10671 ImplicationChecksByTransitivity, 11.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10423occurred in iteration=51, InterpolantAutomatonStates: 909, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 12.5s InterpolantComputationTime, 2032 NumberOfCodeBlocks, 2032 NumberOfCodeBlocksAsserted, 144 NumberOfCheckSat, 2583 ConstructedInterpolants, 0 QuantifiedInterpolants, 14849 SizeOfPredicates, 133 NumberOfNonLiveVariables, 4016 ConjunctsInSsa, 517 ConjunctsInUnsatCore, 144 InterpolantComputations, 35 PerfectInterpolantSequences, 73/415 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-12 08:30:39,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE