/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -tc ../benchexec/../../../trunk/examples/toolchains/AutomizerCInline_IcfgBuilder.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis PETRI_NET --preprocessor.replace.while.statements.and.if-then-else.statements false -i ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-14 01:13:45,212 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-14 01:13:45,276 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2025-04-14 01:13:45,280 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-14 01:13:45,280 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-14 01:13:45,304 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-14 01:13:45,304 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-14 01:13:45,304 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-14 01:13:45,304 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-14 01:13:45,304 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-14 01:13:45,305 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-14 01:13:45,305 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-14 01:13:45,305 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-14 01:13:45,305 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-14 01:13:45,305 INFO L153 SettingsManager]: * Use SBE=true [2025-04-14 01:13:45,305 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-14 01:13:45,305 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-14 01:13:45,305 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-14 01:13:45,305 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-14 01:13:45,305 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-14 01:13:45,306 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-14 01:13:45,306 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-14 01:13:45,307 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-14 01:13:45,307 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-14 01:13:45,307 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-14 01:13:45,307 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-14 01:13:45,307 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-14 01:13:45,307 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-14 01:13:45,307 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-14 01:13:45,307 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 01:13:45,307 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 01:13:45,307 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 01:13:45,307 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 01:13:45,308 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-14 01:13:45,308 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 01:13:45,308 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 01:13:45,308 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 01:13:45,308 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 01:13:45,308 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-14 01:13:45,308 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-14 01:13:45,308 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-14 01:13:45,308 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-14 01:13:45,308 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-14 01:13:45,308 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-14 01:13:45,308 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-14 01:13:45,308 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-14 01:13:45,308 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-14 01:13:45,308 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Automaton type used in concurrency analysis -> PETRI_NET Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Replace while statements and if-then-else statements -> false [2025-04-14 01:13:45,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-14 01:13:45,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-14 01:13:45,540 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-14 01:13:45,541 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-14 01:13:45,541 INFO L274 PluginConnector]: CDTParser initialized [2025-04-14 01:13:45,542 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c [2025-04-14 01:13:46,856 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57c2004a3/b328d3a234a8404ba9f9bb9f9b1e8996/FLAGf11631b2d [2025-04-14 01:13:47,066 INFO L389 CDTParser]: Found 1 translation units. [2025-04-14 01:13:47,066 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c [2025-04-14 01:13:47,074 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57c2004a3/b328d3a234a8404ba9f9bb9f9b1e8996/FLAGf11631b2d [2025-04-14 01:13:47,907 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57c2004a3/b328d3a234a8404ba9f9bb9f9b1e8996 [2025-04-14 01:13:47,909 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-14 01:13:47,910 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-14 01:13:47,912 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-14 01:13:47,912 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-14 01:13:47,915 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-14 01:13:47,915 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 01:13:47" (1/1) ... [2025-04-14 01:13:47,916 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6767bb87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:13:47, skipping insertion in model container [2025-04-14 01:13:47,916 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 01:13:47" (1/1) ... [2025-04-14 01:13:47,928 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-14 01:13:48,121 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c[4151,4164] [2025-04-14 01:13:48,135 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 01:13:48,146 INFO L200 MainTranslator]: Completed pre-run [2025-04-14 01:13:48,173 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c[4151,4164] [2025-04-14 01:13:48,177 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 01:13:48,189 INFO L204 MainTranslator]: Completed translation [2025-04-14 01:13:48,190 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:13:48 WrapperNode [2025-04-14 01:13:48,190 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-14 01:13:48,191 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-14 01:13:48,191 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-14 01:13:48,191 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-14 01:13:48,197 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:13:48" (1/1) ... [2025-04-14 01:13:48,208 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:13:48" (1/1) ... [2025-04-14 01:13:48,238 INFO L138 Inliner]: procedures = 26, calls = 56, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 274 [2025-04-14 01:13:48,239 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-14 01:13:48,239 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-14 01:13:48,239 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-14 01:13:48,239 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-14 01:13:48,246 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:13:48" (1/1) ... [2025-04-14 01:13:48,246 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:13:48" (1/1) ... [2025-04-14 01:13:48,253 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:13:48" (1/1) ... [2025-04-14 01:13:48,281 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2025-04-14 01:13:48,281 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:13:48" (1/1) ... [2025-04-14 01:13:48,281 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:13:48" (1/1) ... [2025-04-14 01:13:48,295 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:13:48" (1/1) ... [2025-04-14 01:13:48,296 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:13:48" (1/1) ... [2025-04-14 01:13:48,297 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:13:48" (1/1) ... [2025-04-14 01:13:48,298 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:13:48" (1/1) ... [2025-04-14 01:13:48,306 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-14 01:13:48,307 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-14 01:13:48,307 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-14 01:13:48,307 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-14 01:13:48,308 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:13:48" (1/1) ... [2025-04-14 01:13:48,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 01:13:48,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:13:48,336 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) [2025-04-14 01:13:48,339 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 [2025-04-14 01:13:48,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-14 01:13:48,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-14 01:13:48,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-04-14 01:13:48,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-14 01:13:48,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-04-14 01:13:48,358 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-14 01:13:48,358 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-14 01:13:48,359 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-14 01:13:48,359 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-14 01:13:48,359 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-14 01:13:48,359 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-14 01:13:48,359 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-04-14 01:13:48,359 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-04-14 01:13:48,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-14 01:13:48,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-14 01:13:48,359 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-14 01:13:48,359 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-14 01:13:48,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-14 01:13:48,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-14 01:13:48,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-14 01:13:48,361 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-14 01:13:48,457 INFO L256 CfgBuilder]: Building ICFG [2025-04-14 01:13:48,459 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-14 01:13:48,893 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-14 01:13:48,893 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-14 01:13:48,893 INFO L318 CfgBuilder]: Performing block encoding [2025-04-14 01:13:49,257 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-14 01:13:49,258 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 01:13:49 BoogieIcfgContainer [2025-04-14 01:13:49,258 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-14 01:13:49,261 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-14 01:13:49,262 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-14 01:13:49,265 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-14 01:13:49,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.04 01:13:47" (1/3) ... [2025-04-14 01:13:49,266 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@391a3db3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 01:13:49, skipping insertion in model container [2025-04-14 01:13:49,266 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:13:48" (2/3) ... [2025-04-14 01:13:49,266 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@391a3db3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 01:13:49, skipping insertion in model container [2025-04-14 01:13:49,266 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 01:13:49" (3/3) ... [2025-04-14 01:13:49,267 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult2.wvr.c [2025-04-14 01:13:49,280 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-14 01:13:49,281 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-buffer-mult2.wvr.c that has 5 procedures, 42 locations, 43 edges, 1 initial locations, 6 loop locations, and 1 error locations. [2025-04-14 01:13:49,282 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-14 01:13:49,341 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-04-14 01:13:49,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 47 transitions, 122 flow [2025-04-14 01:13:49,404 INFO L116 PetriNetUnfolderBase]: 6/43 cut-off events. [2025-04-14 01:13:49,407 INFO L117 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-04-14 01:13:49,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 43 events. 6/43 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 71 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2025-04-14 01:13:49,409 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 47 transitions, 122 flow [2025-04-14 01:13:49,416 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 42 transitions, 108 flow [2025-04-14 01:13:49,424 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-14 01:13:49,435 INFO L340 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;@37caab90, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-14 01:13:49,435 INFO L341 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-04-14 01:13:49,459 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-14 01:13:49,459 INFO L116 PetriNetUnfolderBase]: 6/41 cut-off events. [2025-04-14 01:13:49,459 INFO L117 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-04-14 01:13:49,459 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:13:49,461 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:13:49,461 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 01:13:49,465 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:13:49,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1139845101, now seen corresponding path program 1 times [2025-04-14 01:13:49,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:13:49,470 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68595805] [2025-04-14 01:13:49,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:13:49,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:13:49,541 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-04-14 01:13:49,598 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-04-14 01:13:49,598 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:13:49,598 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:13:49,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:13:49,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:13:49,784 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68595805] [2025-04-14 01:13:49,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68595805] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:13:49,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:13:49,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-04-14 01:13:49,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359262868] [2025-04-14 01:13:49,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:13:49,796 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-14 01:13:49,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:13:49,817 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-14 01:13:49,817 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-14 01:13:49,818 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2025-04-14 01:13:49,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:13:49,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:13:49,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2025-04-14 01:13:49,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:13:50,470 INFO L116 PetriNetUnfolderBase]: 3682/5091 cut-off events. [2025-04-14 01:13:50,470 INFO L117 PetriNetUnfolderBase]: For 393/393 co-relation queries the response was YES. [2025-04-14 01:13:50,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10275 conditions, 5091 events. 3682/5091 cut-off events. For 393/393 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 24518 event pairs, 1024 based on Foata normal form. 1/5004 useless extension candidates. Maximal degree in co-relation 9160. Up to 3095 conditions per place. [2025-04-14 01:13:50,524 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 51 selfloop transitions, 3 changer transitions 1/63 dead transitions. [2025-04-14 01:13:50,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 63 transitions, 275 flow [2025-04-14 01:13:50,525 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-14 01:13:50,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-14 01:13:50,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2025-04-14 01:13:50,535 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6524822695035462 [2025-04-14 01:13:50,536 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 108 flow. Second operand 3 states and 92 transitions. [2025-04-14 01:13:50,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 63 transitions, 275 flow [2025-04-14 01:13:50,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 63 transitions, 249 flow, removed 0 selfloop flow, removed 8 redundant places. [2025-04-14 01:13:50,550 INFO L231 Difference]: Finished difference. Result has 44 places, 44 transitions, 111 flow [2025-04-14 01:13:50,553 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=111, PETRI_PLACES=44, PETRI_TRANSITIONS=44} [2025-04-14 01:13:50,556 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, -5 predicate places. [2025-04-14 01:13:50,556 INFO L485 AbstractCegarLoop]: Abstraction has has 44 places, 44 transitions, 111 flow [2025-04-14 01:13:50,556 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:13:50,556 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:13:50,556 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:13:50,557 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-14 01:13:50,557 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 01:13:50,557 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:13:50,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1075801163, now seen corresponding path program 1 times [2025-04-14 01:13:50,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:13:50,557 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366414153] [2025-04-14 01:13:50,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:13:50,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:13:50,574 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-04-14 01:13:50,603 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-04-14 01:13:50,603 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:13:50,603 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:13:50,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:13:50,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:13:50,756 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366414153] [2025-04-14 01:13:50,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366414153] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:13:50,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:13:50,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-14 01:13:50,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485970861] [2025-04-14 01:13:50,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:13:50,757 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-14 01:13:50,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:13:50,757 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-14 01:13:50,757 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-14 01:13:50,758 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2025-04-14 01:13:50,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 44 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:13:50,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:13:50,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2025-04-14 01:13:50,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:13:51,310 INFO L116 PetriNetUnfolderBase]: 4690/6604 cut-off events. [2025-04-14 01:13:51,310 INFO L117 PetriNetUnfolderBase]: For 889/889 co-relation queries the response was YES. [2025-04-14 01:13:51,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13875 conditions, 6604 events. 4690/6604 cut-off events. For 889/889 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 34535 event pairs, 1685 based on Foata normal form. 186/6735 useless extension candidates. Maximal degree in co-relation 5583. Up to 3904 conditions per place. [2025-04-14 01:13:51,345 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 59 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2025-04-14 01:13:51,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 69 transitions, 297 flow [2025-04-14 01:13:51,346 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-14 01:13:51,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-14 01:13:51,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2025-04-14 01:13:51,347 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6737588652482269 [2025-04-14 01:13:51,347 INFO L175 Difference]: Start difference. First operand has 44 places, 44 transitions, 111 flow. Second operand 3 states and 95 transitions. [2025-04-14 01:13:51,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 69 transitions, 297 flow [2025-04-14 01:13:51,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 69 transitions, 293 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-14 01:13:51,351 INFO L231 Difference]: Finished difference. Result has 46 places, 45 transitions, 122 flow [2025-04-14 01:13:51,351 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=46, PETRI_TRANSITIONS=45} [2025-04-14 01:13:51,351 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, -3 predicate places. [2025-04-14 01:13:51,352 INFO L485 AbstractCegarLoop]: Abstraction has has 46 places, 45 transitions, 122 flow [2025-04-14 01:13:51,352 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:13:51,352 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:13:51,352 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:13:51,352 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-14 01:13:51,352 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 01:13:51,352 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:13:51,353 INFO L85 PathProgramCache]: Analyzing trace with hash -608521641, now seen corresponding path program 1 times [2025-04-14 01:13:51,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:13:51,353 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880266597] [2025-04-14 01:13:51,353 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:13:51,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:13:51,368 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-04-14 01:13:51,381 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-04-14 01:13:51,382 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:13:51,382 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:13:51,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:13:51,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:13:51,475 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880266597] [2025-04-14 01:13:51,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880266597] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:13:51,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:13:51,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-14 01:13:51,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746979907] [2025-04-14 01:13:51,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:13:51,476 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-14 01:13:51,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:13:51,476 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-14 01:13:51,476 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-14 01:13:51,477 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2025-04-14 01:13:51,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 45 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:13:51,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:13:51,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2025-04-14 01:13:51,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:13:52,033 INFO L116 PetriNetUnfolderBase]: 5824/8345 cut-off events. [2025-04-14 01:13:52,033 INFO L117 PetriNetUnfolderBase]: For 2271/2271 co-relation queries the response was YES. [2025-04-14 01:13:52,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18113 conditions, 8345 events. 5824/8345 cut-off events. For 2271/2271 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 45620 event pairs, 2031 based on Foata normal form. 138/8458 useless extension candidates. Maximal degree in co-relation 11525. Up to 4926 conditions per place. [2025-04-14 01:13:52,078 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 59 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2025-04-14 01:13:52,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 69 transitions, 313 flow [2025-04-14 01:13:52,079 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-14 01:13:52,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-14 01:13:52,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2025-04-14 01:13:52,080 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6595744680851063 [2025-04-14 01:13:52,080 INFO L175 Difference]: Start difference. First operand has 46 places, 45 transitions, 122 flow. Second operand 3 states and 93 transitions. [2025-04-14 01:13:52,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 69 transitions, 313 flow [2025-04-14 01:13:52,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 69 transitions, 310 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-14 01:13:52,084 INFO L231 Difference]: Finished difference. Result has 48 places, 46 transitions, 134 flow [2025-04-14 01:13:52,084 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=48, PETRI_TRANSITIONS=46} [2025-04-14 01:13:52,084 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, -1 predicate places. [2025-04-14 01:13:52,084 INFO L485 AbstractCegarLoop]: Abstraction has has 48 places, 46 transitions, 134 flow [2025-04-14 01:13:52,085 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:13:52,085 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:13:52,085 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:13:52,085 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-14 01:13:52,085 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 01:13:52,086 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:13:52,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1105033669, now seen corresponding path program 1 times [2025-04-14 01:13:52,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:13:52,086 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146920041] [2025-04-14 01:13:52,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:13:52,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:13:52,100 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-04-14 01:13:52,117 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-04-14 01:13:52,117 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:13:52,118 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:13:52,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:13:52,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:13:52,275 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146920041] [2025-04-14 01:13:52,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146920041] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:13:52,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:13:52,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-14 01:13:52,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563119835] [2025-04-14 01:13:52,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:13:52,276 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-14 01:13:52,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:13:52,276 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-14 01:13:52,276 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-14 01:13:52,276 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2025-04-14 01:13:52,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 46 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:13:52,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:13:52,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2025-04-14 01:13:52,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:13:53,048 INFO L116 PetriNetUnfolderBase]: 7723/11125 cut-off events. [2025-04-14 01:13:53,048 INFO L117 PetriNetUnfolderBase]: For 4137/4137 co-relation queries the response was YES. [2025-04-14 01:13:53,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25172 conditions, 11125 events. 7723/11125 cut-off events. For 4137/4137 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 64194 event pairs, 6327 based on Foata normal form. 211/11246 useless extension candidates. Maximal degree in co-relation 13290. Up to 7786 conditions per place. [2025-04-14 01:13:53,103 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 66 selfloop transitions, 5 changer transitions 0/79 dead transitions. [2025-04-14 01:13:53,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 79 transitions, 365 flow [2025-04-14 01:13:53,103 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-14 01:13:53,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-14 01:13:53,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2025-04-14 01:13:53,105 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5361702127659574 [2025-04-14 01:13:53,105 INFO L175 Difference]: Start difference. First operand has 48 places, 46 transitions, 134 flow. Second operand 5 states and 126 transitions. [2025-04-14 01:13:53,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 79 transitions, 365 flow [2025-04-14 01:13:53,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 79 transitions, 362 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-14 01:13:53,107 INFO L231 Difference]: Finished difference. Result has 54 places, 50 transitions, 168 flow [2025-04-14 01:13:53,109 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=168, PETRI_PLACES=54, PETRI_TRANSITIONS=50} [2025-04-14 01:13:53,111 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 5 predicate places. [2025-04-14 01:13:53,111 INFO L485 AbstractCegarLoop]: Abstraction has has 54 places, 50 transitions, 168 flow [2025-04-14 01:13:53,111 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:13:53,112 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:13:53,112 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:13:53,112 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-14 01:13:53,112 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 01:13:53,113 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:13:53,113 INFO L85 PathProgramCache]: Analyzing trace with hash 621757255, now seen corresponding path program 1 times [2025-04-14 01:13:53,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:13:53,113 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224069654] [2025-04-14 01:13:53,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:13:53,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:13:53,126 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-04-14 01:13:53,138 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-04-14 01:13:53,138 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:13:53,138 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:13:53,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:13:53,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:13:53,259 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224069654] [2025-04-14 01:13:53,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224069654] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:13:53,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:13:53,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-14 01:13:53,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238444528] [2025-04-14 01:13:53,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:13:53,260 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-14 01:13:53,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:13:53,260 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-14 01:13:53,260 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-14 01:13:53,260 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2025-04-14 01:13:53,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 168 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:13:53,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:13:53,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2025-04-14 01:13:53,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:13:54,186 INFO L116 PetriNetUnfolderBase]: 10316/15110 cut-off events. [2025-04-14 01:13:54,186 INFO L117 PetriNetUnfolderBase]: For 5644/5644 co-relation queries the response was YES. [2025-04-14 01:13:54,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33535 conditions, 15110 events. 10316/15110 cut-off events. For 5644/5644 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 94248 event pairs, 8685 based on Foata normal form. 335/15345 useless extension candidates. Maximal degree in co-relation 25668. Up to 10444 conditions per place. [2025-04-14 01:13:54,270 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 65 selfloop transitions, 5 changer transitions 1/79 dead transitions. [2025-04-14 01:13:54,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 79 transitions, 396 flow [2025-04-14 01:13:54,271 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-14 01:13:54,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-04-14 01:13:54,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2025-04-14 01:13:54,271 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5851063829787234 [2025-04-14 01:13:54,271 INFO L175 Difference]: Start difference. First operand has 54 places, 50 transitions, 168 flow. Second operand 4 states and 110 transitions. [2025-04-14 01:13:54,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 79 transitions, 396 flow [2025-04-14 01:13:54,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 79 transitions, 390 flow, removed 2 selfloop flow, removed 1 redundant places. [2025-04-14 01:13:54,274 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 186 flow [2025-04-14 01:13:54,274 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2025-04-14 01:13:54,274 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 9 predicate places. [2025-04-14 01:13:54,274 INFO L485 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 186 flow [2025-04-14 01:13:54,275 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:13:54,275 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:13:54,275 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:13:54,275 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-14 01:13:54,275 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 01:13:54,275 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:13:54,275 INFO L85 PathProgramCache]: Analyzing trace with hash -654720126, now seen corresponding path program 1 times [2025-04-14 01:13:54,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:13:54,276 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137627680] [2025-04-14 01:13:54,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:13:54,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:13:54,288 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-04-14 01:13:54,301 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-04-14 01:13:54,301 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:13:54,301 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:13:54,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:13:54,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:13:54,684 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137627680] [2025-04-14 01:13:54,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137627680] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:13:54,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:13:54,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-04-14 01:13:54,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120556441] [2025-04-14 01:13:54,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:13:54,685 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-14 01:13:54,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:13:54,685 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-14 01:13:54,686 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-04-14 01:13:54,697 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2025-04-14 01:13:54,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 186 flow. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 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) [2025-04-14 01:13:54,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:13:54,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2025-04-14 01:13:54,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:13:56,079 INFO L116 PetriNetUnfolderBase]: 13956/20366 cut-off events. [2025-04-14 01:13:56,080 INFO L117 PetriNetUnfolderBase]: For 7824/7824 co-relation queries the response was YES. [2025-04-14 01:13:56,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46071 conditions, 20366 events. 13956/20366 cut-off events. For 7824/7824 co-relation queries the response was YES. Maximal size of possible extension queue 825. Compared 130750 event pairs, 1370 based on Foata normal form. 514/19770 useless extension candidates. Maximal degree in co-relation 37762. Up to 8994 conditions per place. [2025-04-14 01:13:56,198 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 129 selfloop transitions, 13 changer transitions 3/152 dead transitions. [2025-04-14 01:13:56,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 152 transitions, 752 flow [2025-04-14 01:13:56,199 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-14 01:13:56,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-04-14 01:13:56,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 225 transitions. [2025-04-14 01:13:56,200 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.598404255319149 [2025-04-14 01:13:56,200 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 186 flow. Second operand 8 states and 225 transitions. [2025-04-14 01:13:56,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 152 transitions, 752 flow [2025-04-14 01:13:56,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 152 transitions, 742 flow, removed 3 selfloop flow, removed 1 redundant places. [2025-04-14 01:13:56,206 INFO L231 Difference]: Finished difference. Result has 70 places, 62 transitions, 285 flow [2025-04-14 01:13:56,206 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=285, PETRI_PLACES=70, PETRI_TRANSITIONS=62} [2025-04-14 01:13:56,207 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 21 predicate places. [2025-04-14 01:13:56,207 INFO L485 AbstractCegarLoop]: Abstraction has has 70 places, 62 transitions, 285 flow [2025-04-14 01:13:56,207 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 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) [2025-04-14 01:13:56,207 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:13:56,207 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:13:56,207 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-04-14 01:13:56,207 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 01:13:56,207 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:13:56,207 INFO L85 PathProgramCache]: Analyzing trace with hash -25131990, now seen corresponding path program 1 times [2025-04-14 01:13:56,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:13:56,207 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647322924] [2025-04-14 01:13:56,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:13:56,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:13:56,218 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-04-14 01:13:56,249 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-04-14 01:13:56,249 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:13:56,249 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:13:56,586 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-14 01:13:56,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:13:56,587 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647322924] [2025-04-14 01:13:56,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647322924] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:13:56,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:13:56,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-14 01:13:56,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610222737] [2025-04-14 01:13:56,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:13:56,587 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-14 01:13:56,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:13:56,588 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-14 01:13:56,588 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-04-14 01:13:56,596 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2025-04-14 01:13:56,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 62 transitions, 285 flow. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:13:56,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:13:56,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2025-04-14 01:13:56,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:13:58,534 INFO L116 PetriNetUnfolderBase]: 19807/28463 cut-off events. [2025-04-14 01:13:58,534 INFO L117 PetriNetUnfolderBase]: For 23331/23331 co-relation queries the response was YES. [2025-04-14 01:13:58,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74121 conditions, 28463 events. 19807/28463 cut-off events. For 23331/23331 co-relation queries the response was YES. Maximal size of possible extension queue 1179. Compared 185046 event pairs, 3784 based on Foata normal form. 213/28660 useless extension candidates. Maximal degree in co-relation 61294. Up to 18574 conditions per place. [2025-04-14 01:13:58,721 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 121 selfloop transitions, 33 changer transitions 6/168 dead transitions. [2025-04-14 01:13:58,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 168 transitions, 1014 flow [2025-04-14 01:13:58,722 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-14 01:13:58,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-04-14 01:13:58,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 224 transitions. [2025-04-14 01:13:58,723 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5957446808510638 [2025-04-14 01:13:58,723 INFO L175 Difference]: Start difference. First operand has 70 places, 62 transitions, 285 flow. Second operand 8 states and 224 transitions. [2025-04-14 01:13:58,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 168 transitions, 1014 flow [2025-04-14 01:13:58,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 168 transitions, 995 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-14 01:13:58,869 INFO L231 Difference]: Finished difference. Result has 81 places, 86 transitions, 575 flow [2025-04-14 01:13:58,870 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=575, PETRI_PLACES=81, PETRI_TRANSITIONS=86} [2025-04-14 01:13:58,871 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 32 predicate places. [2025-04-14 01:13:58,871 INFO L485 AbstractCegarLoop]: Abstraction has has 81 places, 86 transitions, 575 flow [2025-04-14 01:13:58,871 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:13:58,871 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:13:58,871 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:13:58,871 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-04-14 01:13:58,871 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 01:13:58,872 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:13:58,872 INFO L85 PathProgramCache]: Analyzing trace with hash 396570542, now seen corresponding path program 2 times [2025-04-14 01:13:58,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:13:58,872 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761706862] [2025-04-14 01:13:58,872 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 01:13:58,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:13:58,890 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-04-14 01:13:58,907 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 34 of 35 statements. [2025-04-14 01:13:58,907 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-14 01:13:58,907 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:13:59,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:13:59,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:13:59,269 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761706862] [2025-04-14 01:13:59,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761706862] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:13:59,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:13:59,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-14 01:13:59,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725807816] [2025-04-14 01:13:59,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:13:59,269 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-14 01:13:59,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:13:59,270 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-14 01:13:59,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-04-14 01:13:59,278 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2025-04-14 01:13:59,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 86 transitions, 575 flow. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:13:59,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:13:59,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2025-04-14 01:13:59,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:14:01,835 INFO L116 PetriNetUnfolderBase]: 21064/31059 cut-off events. [2025-04-14 01:14:01,836 INFO L117 PetriNetUnfolderBase]: For 54842/55550 co-relation queries the response was YES. [2025-04-14 01:14:01,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99890 conditions, 31059 events. 21064/31059 cut-off events. For 54842/55550 co-relation queries the response was YES. Maximal size of possible extension queue 1410. Compared 216719 event pairs, 4418 based on Foata normal form. 296/31009 useless extension candidates. Maximal degree in co-relation 81065. Up to 19406 conditions per place. [2025-04-14 01:14:02,045 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 152 selfloop transitions, 58 changer transitions 11/228 dead transitions. [2025-04-14 01:14:02,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 228 transitions, 1914 flow [2025-04-14 01:14:02,046 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-14 01:14:02,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-04-14 01:14:02,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 224 transitions. [2025-04-14 01:14:02,047 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5957446808510638 [2025-04-14 01:14:02,047 INFO L175 Difference]: Start difference. First operand has 81 places, 86 transitions, 575 flow. Second operand 8 states and 224 transitions. [2025-04-14 01:14:02,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 228 transitions, 1914 flow [2025-04-14 01:14:02,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 228 transitions, 1860 flow, removed 17 selfloop flow, removed 1 redundant places. [2025-04-14 01:14:02,417 INFO L231 Difference]: Finished difference. Result has 92 places, 124 transitions, 1139 flow [2025-04-14 01:14:02,418 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=557, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1139, PETRI_PLACES=92, PETRI_TRANSITIONS=124} [2025-04-14 01:14:02,418 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 43 predicate places. [2025-04-14 01:14:02,418 INFO L485 AbstractCegarLoop]: Abstraction has has 92 places, 124 transitions, 1139 flow [2025-04-14 01:14:02,418 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:14:02,418 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:14:02,418 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:14:02,418 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-04-14 01:14:02,418 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 01:14:02,419 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:14:02,419 INFO L85 PathProgramCache]: Analyzing trace with hash 520789950, now seen corresponding path program 3 times [2025-04-14 01:14:02,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:14:02,419 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534066481] [2025-04-14 01:14:02,419 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 01:14:02,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:14:02,426 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 35 statements into 2 equivalence classes. [2025-04-14 01:14:02,437 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-04-14 01:14:02,437 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-14 01:14:02,437 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:14:02,718 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:14:02,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:14:02,718 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534066481] [2025-04-14 01:14:02,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534066481] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:14:02,718 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256219433] [2025-04-14 01:14:02,718 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 01:14:02,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:14:02,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:14:02,720 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) [2025-04-14 01:14:02,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-04-14 01:14:02,777 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 35 statements into 2 equivalence classes. [2025-04-14 01:14:02,803 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-04-14 01:14:02,803 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-14 01:14:02,803 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:14:02,805 INFO L256 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-14 01:14:02,809 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:14:02,996 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-14 01:14:02,997 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-04-14 01:14:02,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256219433] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:14:02,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-04-14 01:14:02,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 10 [2025-04-14 01:14:02,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90377894] [2025-04-14 01:14:02,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:14:02,997 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-14 01:14:02,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:14:02,998 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-14 01:14:02,998 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2025-04-14 01:14:03,012 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2025-04-14 01:14:03,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 124 transitions, 1139 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 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) [2025-04-14 01:14:03,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:14:03,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2025-04-14 01:14:03,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:14:06,700 INFO L116 PetriNetUnfolderBase]: 30963/44620 cut-off events. [2025-04-14 01:14:06,700 INFO L117 PetriNetUnfolderBase]: For 86119/86787 co-relation queries the response was YES. [2025-04-14 01:14:06,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154027 conditions, 44620 events. 30963/44620 cut-off events. For 86119/86787 co-relation queries the response was YES. Maximal size of possible extension queue 1858. Compared 312414 event pairs, 5723 based on Foata normal form. 284/44554 useless extension candidates. Maximal degree in co-relation 120586. Up to 31576 conditions per place. [2025-04-14 01:14:07,120 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 133 selfloop transitions, 62 changer transitions 32/233 dead transitions. [2025-04-14 01:14:07,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 233 transitions, 2140 flow [2025-04-14 01:14:07,120 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-14 01:14:07,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-04-14 01:14:07,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 215 transitions. [2025-04-14 01:14:07,121 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5718085106382979 [2025-04-14 01:14:07,121 INFO L175 Difference]: Start difference. First operand has 92 places, 124 transitions, 1139 flow. Second operand 8 states and 215 transitions. [2025-04-14 01:14:07,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 233 transitions, 2140 flow [2025-04-14 01:14:08,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 233 transitions, 2128 flow, removed 2 selfloop flow, removed 1 redundant places. [2025-04-14 01:14:08,938 INFO L231 Difference]: Finished difference. Result has 102 places, 133 transitions, 1419 flow [2025-04-14 01:14:08,938 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1132, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1419, PETRI_PLACES=102, PETRI_TRANSITIONS=133} [2025-04-14 01:14:08,939 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 53 predicate places. [2025-04-14 01:14:08,939 INFO L485 AbstractCegarLoop]: Abstraction has has 102 places, 133 transitions, 1419 flow [2025-04-14 01:14:08,939 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 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) [2025-04-14 01:14:08,939 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:14:08,940 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:14:08,947 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-04-14 01:14:09,140 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:14:09,140 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 01:14:09,141 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:14:09,141 INFO L85 PathProgramCache]: Analyzing trace with hash -778397798, now seen corresponding path program 4 times [2025-04-14 01:14:09,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:14:09,141 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582615482] [2025-04-14 01:14:09,141 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 01:14:09,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:14:09,152 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 35 statements into 2 equivalence classes. [2025-04-14 01:14:09,164 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-04-14 01:14:09,164 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-14 01:14:09,164 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:14:09,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:14:09,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:14:09,387 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582615482] [2025-04-14 01:14:09,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582615482] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:14:09,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:14:09,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-14 01:14:09,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452371456] [2025-04-14 01:14:09,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:14:09,387 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-14 01:14:09,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:14:09,387 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-14 01:14:09,387 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-04-14 01:14:09,396 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2025-04-14 01:14:09,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 133 transitions, 1419 flow. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:14:09,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:14:09,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2025-04-14 01:14:09,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:14:15,300 INFO L116 PetriNetUnfolderBase]: 40792/60853 cut-off events. [2025-04-14 01:14:15,301 INFO L117 PetriNetUnfolderBase]: For 166368/167969 co-relation queries the response was YES. [2025-04-14 01:14:15,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226829 conditions, 60853 events. 40792/60853 cut-off events. For 166368/167969 co-relation queries the response was YES. Maximal size of possible extension queue 2621. Compared 463886 event pairs, 7994 based on Foata normal form. 1177/61367 useless extension candidates. Maximal degree in co-relation 180690. Up to 31114 conditions per place. [2025-04-14 01:14:15,837 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 207 selfloop transitions, 200 changer transitions 18/433 dead transitions. [2025-04-14 01:14:15,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 433 transitions, 5217 flow [2025-04-14 01:14:15,838 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-04-14 01:14:15,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-04-14 01:14:15,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 308 transitions. [2025-04-14 01:14:15,839 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5957446808510638 [2025-04-14 01:14:15,839 INFO L175 Difference]: Start difference. First operand has 102 places, 133 transitions, 1419 flow. Second operand 11 states and 308 transitions. [2025-04-14 01:14:15,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 433 transitions, 5217 flow [2025-04-14 01:14:18,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 433 transitions, 5093 flow, removed 6 selfloop flow, removed 2 redundant places. [2025-04-14 01:14:18,007 INFO L231 Difference]: Finished difference. Result has 118 places, 279 transitions, 4204 flow [2025-04-14 01:14:18,007 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1380, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4204, PETRI_PLACES=118, PETRI_TRANSITIONS=279} [2025-04-14 01:14:18,012 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 69 predicate places. [2025-04-14 01:14:18,012 INFO L485 AbstractCegarLoop]: Abstraction has has 118 places, 279 transitions, 4204 flow [2025-04-14 01:14:18,012 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:14:18,012 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:14:18,012 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:14:18,012 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-04-14 01:14:18,012 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 01:14:18,013 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:14:18,013 INFO L85 PathProgramCache]: Analyzing trace with hash 669122112, now seen corresponding path program 5 times [2025-04-14 01:14:18,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:14:18,013 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377559028] [2025-04-14 01:14:18,013 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 01:14:18,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:14:18,027 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-04-14 01:14:18,035 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-04-14 01:14:18,035 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:14:18,035 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:14:18,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-14 01:14:18,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:14:18,263 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377559028] [2025-04-14 01:14:18,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377559028] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:14:18,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:14:18,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-04-14 01:14:18,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201676795] [2025-04-14 01:14:18,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:14:18,264 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-14 01:14:18,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:14:18,264 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-14 01:14:18,264 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-04-14 01:14:18,270 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2025-04-14 01:14:18,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 279 transitions, 4204 flow. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 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) [2025-04-14 01:14:18,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:14:18,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2025-04-14 01:14:18,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:14:25,318 INFO L116 PetriNetUnfolderBase]: 42364/64313 cut-off events. [2025-04-14 01:14:25,319 INFO L117 PetriNetUnfolderBase]: For 351496/354228 co-relation queries the response was YES. [2025-04-14 01:14:25,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293850 conditions, 64313 events. 42364/64313 cut-off events. For 351496/354228 co-relation queries the response was YES. Maximal size of possible extension queue 2891. Compared 510729 event pairs, 11266 based on Foata normal form. 458/63344 useless extension candidates. Maximal degree in co-relation 223546. Up to 48201 conditions per place. [2025-04-14 01:14:26,104 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 147 selfloop transitions, 161 changer transitions 28/346 dead transitions. [2025-04-14 01:14:26,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 346 transitions, 5275 flow [2025-04-14 01:14:26,105 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-14 01:14:26,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-14 01:14:26,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 166 transitions. [2025-04-14 01:14:26,105 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5886524822695035 [2025-04-14 01:14:26,105 INFO L175 Difference]: Start difference. First operand has 118 places, 279 transitions, 4204 flow. Second operand 6 states and 166 transitions. [2025-04-14 01:14:26,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 346 transitions, 5275 flow [2025-04-14 01:14:34,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 346 transitions, 5245 flow, removed 15 selfloop flow, removed 0 redundant places. [2025-04-14 01:14:34,736 INFO L231 Difference]: Finished difference. Result has 125 places, 279 transitions, 4518 flow [2025-04-14 01:14:34,737 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4174, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4518, PETRI_PLACES=125, PETRI_TRANSITIONS=279} [2025-04-14 01:14:34,737 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 76 predicate places. [2025-04-14 01:14:34,737 INFO L485 AbstractCegarLoop]: Abstraction has has 125 places, 279 transitions, 4518 flow [2025-04-14 01:14:34,737 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 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) [2025-04-14 01:14:34,737 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:14:34,738 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:14:34,738 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-04-14 01:14:34,738 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 01:14:34,738 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:14:34,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1283582212, now seen corresponding path program 6 times [2025-04-14 01:14:34,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:14:34,738 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889832086] [2025-04-14 01:14:34,738 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-14 01:14:34,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:14:34,746 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 35 statements into 2 equivalence classes. [2025-04-14 01:14:34,754 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 34 of 35 statements. [2025-04-14 01:14:34,754 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-04-14 01:14:34,754 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:14:34,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:14:34,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:14:34,962 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889832086] [2025-04-14 01:14:34,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889832086] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:14:34,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:14:34,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-14 01:14:34,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855285424] [2025-04-14 01:14:34,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:14:34,963 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-14 01:14:34,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:14:34,963 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-14 01:14:34,963 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-04-14 01:14:34,971 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2025-04-14 01:14:34,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 279 transitions, 4518 flow. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:14:34,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:14:34,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2025-04-14 01:14:34,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:14:43,182 INFO L116 PetriNetUnfolderBase]: 51119/77061 cut-off events. [2025-04-14 01:14:43,182 INFO L117 PetriNetUnfolderBase]: For 475008/478899 co-relation queries the response was YES. [2025-04-14 01:14:43,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 358736 conditions, 77061 events. 51119/77061 cut-off events. For 475008/478899 co-relation queries the response was YES. Maximal size of possible extension queue 3471. Compared 620667 event pairs, 11606 based on Foata normal form. 623/76000 useless extension candidates. Maximal degree in co-relation 285705. Up to 49366 conditions per place. [2025-04-14 01:14:43,937 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 239 selfloop transitions, 260 changer transitions 13/522 dead transitions. [2025-04-14 01:14:43,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 522 transitions, 8497 flow [2025-04-14 01:14:43,938 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-14 01:14:43,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-04-14 01:14:43,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 248 transitions. [2025-04-14 01:14:43,939 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5862884160756501 [2025-04-14 01:14:43,939 INFO L175 Difference]: Start difference. First operand has 125 places, 279 transitions, 4518 flow. Second operand 9 states and 248 transitions. [2025-04-14 01:14:43,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 522 transitions, 8497 flow [2025-04-14 01:14:55,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 522 transitions, 8007 flow, removed 2 selfloop flow, removed 5 redundant places. [2025-04-14 01:14:55,610 INFO L231 Difference]: Finished difference. Result has 133 places, 380 transitions, 6891 flow [2025-04-14 01:14:55,611 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4194, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6891, PETRI_PLACES=133, PETRI_TRANSITIONS=380} [2025-04-14 01:14:55,611 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 84 predicate places. [2025-04-14 01:14:55,611 INFO L485 AbstractCegarLoop]: Abstraction has has 133 places, 380 transitions, 6891 flow [2025-04-14 01:14:55,613 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:14:55,613 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:14:55,613 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:14:55,613 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-04-14 01:14:55,613 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 01:14:55,614 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:14:55,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1887385298, now seen corresponding path program 7 times [2025-04-14 01:14:55,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:14:55,614 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920432017] [2025-04-14 01:14:55,614 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-14 01:14:55,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:14:55,622 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-04-14 01:14:55,636 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-04-14 01:14:55,636 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:14:55,636 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:14:55,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:14:55,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:14:55,833 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920432017] [2025-04-14 01:14:55,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920432017] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:14:55,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:14:55,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-04-14 01:14:55,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914755691] [2025-04-14 01:14:55,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:14:55,833 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-14 01:14:55,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:14:55,833 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-14 01:14:55,834 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-04-14 01:14:55,843 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2025-04-14 01:14:55,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 380 transitions, 6891 flow. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 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) [2025-04-14 01:14:55,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:14:55,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2025-04-14 01:14:55,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:15:07,229 INFO L116 PetriNetUnfolderBase]: 58846/90260 cut-off events. [2025-04-14 01:15:07,229 INFO L117 PetriNetUnfolderBase]: For 633786/637832 co-relation queries the response was YES. [2025-04-14 01:15:08,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 444003 conditions, 90260 events. 58846/90260 cut-off events. For 633786/637832 co-relation queries the response was YES. Maximal size of possible extension queue 4425. Compared 763679 event pairs, 17517 based on Foata normal form. 783/89051 useless extension candidates. Maximal degree in co-relation 372965. Up to 47399 conditions per place. [2025-04-14 01:15:08,787 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 186 selfloop transitions, 402 changer transitions 105/703 dead transitions. [2025-04-14 01:15:08,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 703 transitions, 13415 flow [2025-04-14 01:15:08,787 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-14 01:15:08,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-04-14 01:15:08,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 236 transitions. [2025-04-14 01:15:08,788 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.557919621749409 [2025-04-14 01:15:08,788 INFO L175 Difference]: Start difference. First operand has 133 places, 380 transitions, 6891 flow. Second operand 9 states and 236 transitions. [2025-04-14 01:15:08,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 703 transitions, 13415 flow [2025-04-14 01:15:26,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 703 transitions, 13383 flow, removed 3 selfloop flow, removed 1 redundant places. [2025-04-14 01:15:26,991 INFO L231 Difference]: Finished difference. Result has 146 places, 519 transitions, 11032 flow [2025-04-14 01:15:26,992 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6878, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=273, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11032, PETRI_PLACES=146, PETRI_TRANSITIONS=519} [2025-04-14 01:15:26,992 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 97 predicate places. [2025-04-14 01:15:26,992 INFO L485 AbstractCegarLoop]: Abstraction has has 146 places, 519 transitions, 11032 flow [2025-04-14 01:15:26,992 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 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) [2025-04-14 01:15:26,992 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:15:26,992 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:15:26,993 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-04-14 01:15:26,993 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 01:15:26,993 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:15:26,993 INFO L85 PathProgramCache]: Analyzing trace with hash 196118956, now seen corresponding path program 8 times [2025-04-14 01:15:26,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:15:26,993 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175391379] [2025-04-14 01:15:26,993 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 01:15:26,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:15:27,000 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-04-14 01:15:27,018 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 31 of 35 statements. [2025-04-14 01:15:27,018 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-14 01:15:27,018 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:15:27,198 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-14 01:15:27,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:15:27,199 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175391379] [2025-04-14 01:15:27,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175391379] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:15:27,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:15:27,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-14 01:15:27,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829456599] [2025-04-14 01:15:27,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:15:27,199 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-14 01:15:27,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:15:27,200 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-14 01:15:27,200 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-04-14 01:15:27,202 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2025-04-14 01:15:27,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 519 transitions, 11032 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 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) [2025-04-14 01:15:27,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:15:27,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2025-04-14 01:15:27,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:15:44,223 INFO L116 PetriNetUnfolderBase]: 86227/127525 cut-off events. [2025-04-14 01:15:44,224 INFO L117 PetriNetUnfolderBase]: For 1009282/1013506 co-relation queries the response was YES. [2025-04-14 01:15:45,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 655734 conditions, 127525 events. 86227/127525 cut-off events. For 1009282/1013506 co-relation queries the response was YES. Maximal size of possible extension queue 5814. Compared 1048258 event pairs, 23824 based on Foata normal form. 1814/127324 useless extension candidates. Maximal degree in co-relation 589959. Up to 85290 conditions per place. [2025-04-14 01:15:45,862 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 345 selfloop transitions, 365 changer transitions 17/736 dead transitions. [2025-04-14 01:15:45,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 736 transitions, 15547 flow [2025-04-14 01:15:45,862 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-14 01:15:45,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-14 01:15:45,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 201 transitions. [2025-04-14 01:15:45,863 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6109422492401215 [2025-04-14 01:15:45,863 INFO L175 Difference]: Start difference. First operand has 146 places, 519 transitions, 11032 flow. Second operand 7 states and 201 transitions. [2025-04-14 01:15:45,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 736 transitions, 15547 flow [2025-04-14 01:16:35,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 736 transitions, 15441 flow, removed 53 selfloop flow, removed 2 redundant places. [2025-04-14 01:16:35,260 INFO L231 Difference]: Finished difference. Result has 152 places, 610 transitions, 14257 flow [2025-04-14 01:16:35,261 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=10966, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=283, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14257, PETRI_PLACES=152, PETRI_TRANSITIONS=610} [2025-04-14 01:16:35,261 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 103 predicate places. [2025-04-14 01:16:35,262 INFO L485 AbstractCegarLoop]: Abstraction has has 152 places, 610 transitions, 14257 flow [2025-04-14 01:16:35,262 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 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) [2025-04-14 01:16:35,262 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:16:35,262 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:16:35,262 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-04-14 01:16:35,262 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 01:16:35,262 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:16:35,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1134326494, now seen corresponding path program 9 times [2025-04-14 01:16:35,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:16:35,262 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708591863] [2025-04-14 01:16:35,263 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 01:16:35,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:16:35,269 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 35 statements into 2 equivalence classes. [2025-04-14 01:16:35,277 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 34 of 35 statements. [2025-04-14 01:16:35,277 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-14 01:16:35,277 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:16:35,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:16:35,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:16:35,443 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708591863] [2025-04-14 01:16:35,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708591863] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:16:35,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:16:35,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-14 01:16:35,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932839742] [2025-04-14 01:16:35,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:16:35,443 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-14 01:16:35,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:16:35,443 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-14 01:16:35,443 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-04-14 01:16:35,448 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2025-04-14 01:16:35,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 610 transitions, 14257 flow. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:16:35,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:16:35,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2025-04-14 01:16:35,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:16:55,166 INFO L116 PetriNetUnfolderBase]: 86530/133453 cut-off events. [2025-04-14 01:16:55,166 INFO L117 PetriNetUnfolderBase]: For 1048048/1052417 co-relation queries the response was YES. [2025-04-14 01:16:56,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 699052 conditions, 133453 events. 86530/133453 cut-off events. For 1048048/1052417 co-relation queries the response was YES. Maximal size of possible extension queue 7036. Compared 1196266 event pairs, 27407 based on Foata normal form. 1570/132595 useless extension candidates. Maximal degree in co-relation 606888. Up to 72798 conditions per place. [2025-04-14 01:16:57,316 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 419 selfloop transitions, 490 changer transitions 42/963 dead transitions. [2025-04-14 01:16:57,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 963 transitions, 20194 flow [2025-04-14 01:16:57,317 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-14 01:16:57,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-04-14 01:16:57,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 248 transitions. [2025-04-14 01:16:57,322 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5862884160756501 [2025-04-14 01:16:57,322 INFO L175 Difference]: Start difference. First operand has 152 places, 610 transitions, 14257 flow. Second operand 9 states and 248 transitions. [2025-04-14 01:16:57,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 963 transitions, 20194 flow [2025-04-14 01:17:46,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 963 transitions, 20151 flow, removed 6 selfloop flow, removed 1 redundant places. [2025-04-14 01:17:46,671 INFO L231 Difference]: Finished difference. Result has 165 places, 698 transitions, 17144 flow [2025-04-14 01:17:46,671 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=14227, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=610, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=402, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=17144, PETRI_PLACES=165, PETRI_TRANSITIONS=698} [2025-04-14 01:17:46,672 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 116 predicate places. [2025-04-14 01:17:46,672 INFO L485 AbstractCegarLoop]: Abstraction has has 165 places, 698 transitions, 17144 flow [2025-04-14 01:17:46,672 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:17:46,672 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:17:46,672 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:17:46,672 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-04-14 01:17:46,672 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 01:17:46,673 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:17:46,673 INFO L85 PathProgramCache]: Analyzing trace with hash 519255306, now seen corresponding path program 10 times [2025-04-14 01:17:46,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:17:46,673 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931145159] [2025-04-14 01:17:46,673 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 01:17:46,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:17:46,679 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 35 statements into 2 equivalence classes. [2025-04-14 01:17:46,685 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-04-14 01:17:46,685 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-14 01:17:46,685 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:17:46,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:17:46,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:17:46,903 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931145159] [2025-04-14 01:17:46,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931145159] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:17:46,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:17:46,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-04-14 01:17:46,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463453395] [2025-04-14 01:17:46,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:17:46,903 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-14 01:17:46,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:17:46,904 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-14 01:17:46,904 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-04-14 01:17:46,912 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2025-04-14 01:17:46,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 698 transitions, 17144 flow. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 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) [2025-04-14 01:17:46,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:17:46,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2025-04-14 01:17:46,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:18:12,444 INFO L116 PetriNetUnfolderBase]: 99491/151299 cut-off events. [2025-04-14 01:18:12,444 INFO L117 PetriNetUnfolderBase]: For 1482107/1488396 co-relation queries the response was YES. [2025-04-14 01:18:14,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 858407 conditions, 151299 events. 99491/151299 cut-off events. For 1482107/1488396 co-relation queries the response was YES. Maximal size of possible extension queue 7491. Compared 1340550 event pairs, 29607 based on Foata normal form. 1242/150306 useless extension candidates. Maximal degree in co-relation 740374. Up to 106733 conditions per place. [2025-04-14 01:18:14,655 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 456 selfloop transitions, 532 changer transitions 125/1128 dead transitions. [2025-04-14 01:18:14,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 1128 transitions, 27543 flow [2025-04-14 01:18:14,655 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-14 01:18:14,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-04-14 01:18:14,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 273 transitions. [2025-04-14 01:18:14,656 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5808510638297872 [2025-04-14 01:18:14,656 INFO L175 Difference]: Start difference. First operand has 165 places, 698 transitions, 17144 flow. Second operand 10 states and 273 transitions. [2025-04-14 01:18:14,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 1128 transitions, 27543 flow [2025-04-14 01:19:35,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 1128 transitions, 27431 flow, removed 56 selfloop flow, removed 0 redundant places. [2025-04-14 01:19:35,431 INFO L231 Difference]: Finished difference. Result has 179 places, 829 transitions, 22099 flow [2025-04-14 01:19:35,431 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=17050, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=697, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=411, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=22099, PETRI_PLACES=179, PETRI_TRANSITIONS=829} [2025-04-14 01:19:35,432 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 130 predicate places. [2025-04-14 01:19:35,432 INFO L485 AbstractCegarLoop]: Abstraction has has 179 places, 829 transitions, 22099 flow [2025-04-14 01:19:35,432 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 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) [2025-04-14 01:19:35,432 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:19:35,432 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:19:35,432 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-04-14 01:19:35,432 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 01:19:35,432 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:19:35,433 INFO L85 PathProgramCache]: Analyzing trace with hash 54899312, now seen corresponding path program 11 times [2025-04-14 01:19:35,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:19:35,433 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412202810] [2025-04-14 01:19:35,433 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 01:19:35,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:19:35,439 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-04-14 01:19:35,447 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-04-14 01:19:35,447 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:19:35,447 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:19:35,641 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:19:35,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:19:35,642 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412202810] [2025-04-14 01:19:35,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412202810] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:19:35,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:19:35,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-04-14 01:19:35,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499667459] [2025-04-14 01:19:35,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:19:35,642 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-14 01:19:35,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:19:35,642 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-14 01:19:35,642 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-04-14 01:19:35,648 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2025-04-14 01:19:35,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 829 transitions, 22099 flow. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:19:35,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:19:35,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2025-04-14 01:19:35,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:20:09,594 INFO L116 PetriNetUnfolderBase]: 122897/184198 cut-off events. [2025-04-14 01:20:09,594 INFO L117 PetriNetUnfolderBase]: For 1878216/1883629 co-relation queries the response was YES. [2025-04-14 01:20:11,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1065351 conditions, 184198 events. 122897/184198 cut-off events. For 1878216/1883629 co-relation queries the response was YES. Maximal size of possible extension queue 9132. Compared 1614716 event pairs, 37183 based on Foata normal form. 1179/182916 useless extension candidates. Maximal degree in co-relation 930000. Up to 90542 conditions per place. [2025-04-14 01:20:12,503 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 642 selfloop transitions, 298 changer transitions 30/979 dead transitions. [2025-04-14 01:20:12,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 979 transitions, 24814 flow [2025-04-14 01:20:12,503 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-14 01:20:12,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-14 01:20:12,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 174 transitions. [2025-04-14 01:20:12,504 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6170212765957447 [2025-04-14 01:20:12,504 INFO L175 Difference]: Start difference. First operand has 179 places, 829 transitions, 22099 flow. Second operand 6 states and 174 transitions. [2025-04-14 01:20:12,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 979 transitions, 24814 flow [2025-04-14 01:22:45,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 979 transitions, 24695 flow, removed 23 selfloop flow, removed 1 redundant places. [2025-04-14 01:22:45,681 INFO L231 Difference]: Finished difference. Result has 186 places, 814 transitions, 22008 flow [2025-04-14 01:22:45,682 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=20938, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=800, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=280, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=516, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=22008, PETRI_PLACES=186, PETRI_TRANSITIONS=814} [2025-04-14 01:22:45,682 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 137 predicate places. [2025-04-14 01:22:45,682 INFO L485 AbstractCegarLoop]: Abstraction has has 186 places, 814 transitions, 22008 flow [2025-04-14 01:22:45,683 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:22:45,683 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:22:45,683 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:22:45,683 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-04-14 01:22:45,683 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 01:22:45,683 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:22:45,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1487560064, now seen corresponding path program 12 times [2025-04-14 01:22:45,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:22:45,683 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448415466] [2025-04-14 01:22:45,684 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-14 01:22:45,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:22:45,689 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 35 statements into 2 equivalence classes. [2025-04-14 01:22:45,696 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 34 of 35 statements. [2025-04-14 01:22:45,696 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-04-14 01:22:45,696 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:22:45,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:22:45,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:22:45,885 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448415466] [2025-04-14 01:22:45,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448415466] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:22:45,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:22:45,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-04-14 01:22:45,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503525114] [2025-04-14 01:22:45,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:22:45,886 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-04-14 01:22:45,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:22:45,887 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-04-14 01:22:45,887 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-04-14 01:22:45,895 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2025-04-14 01:22:45,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 814 transitions, 22008 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 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) [2025-04-14 01:22:45,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:22:45,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2025-04-14 01:22:45,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:23:19,159 INFO L116 PetriNetUnfolderBase]: 117822/175915 cut-off events. [2025-04-14 01:23:19,160 INFO L117 PetriNetUnfolderBase]: For 1883577/1888492 co-relation queries the response was YES. [2025-04-14 01:23:21,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1037517 conditions, 175915 events. 117822/175915 cut-off events. For 1883577/1888492 co-relation queries the response was YES. Maximal size of possible extension queue 8840. Compared 1521493 event pairs, 42226 based on Foata normal form. 2423/176222 useless extension candidates. Maximal degree in co-relation 922206. Up to 115428 conditions per place. [2025-04-14 01:23:22,028 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 473 selfloop transitions, 507 changer transitions 9/998 dead transitions. [2025-04-14 01:23:22,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 998 transitions, 25680 flow [2025-04-14 01:23:22,028 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-14 01:23:22,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-04-14 01:23:22,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 220 transitions. [2025-04-14 01:23:22,029 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5851063829787234 [2025-04-14 01:23:22,029 INFO L175 Difference]: Start difference. First operand has 186 places, 814 transitions, 22008 flow. Second operand 8 states and 220 transitions. [2025-04-14 01:23:22,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 998 transitions, 25680 flow [2025-04-14 01:25:10,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 998 transitions, 24753 flow, removed 27 selfloop flow, removed 8 redundant places. [2025-04-14 01:25:10,867 INFO L231 Difference]: Finished difference. Result has 187 places, 819 transitions, 22619 flow [2025-04-14 01:25:10,868 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=21085, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=812, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=500, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=22619, PETRI_PLACES=187, PETRI_TRANSITIONS=819} [2025-04-14 01:25:10,868 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 138 predicate places. [2025-04-14 01:25:10,868 INFO L485 AbstractCegarLoop]: Abstraction has has 187 places, 819 transitions, 22619 flow [2025-04-14 01:25:10,868 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 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) [2025-04-14 01:25:10,868 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:25:10,868 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:25:10,869 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-04-14 01:25:10,869 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 01:25:10,870 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:25:10,870 INFO L85 PathProgramCache]: Analyzing trace with hash -509972828, now seen corresponding path program 13 times [2025-04-14 01:25:10,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:25:10,870 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116390756] [2025-04-14 01:25:10,870 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-14 01:25:10,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:25:10,877 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-04-14 01:25:10,885 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-04-14 01:25:10,885 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:25:10,885 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:25:11,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:25:11,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:25:11,046 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116390756] [2025-04-14 01:25:11,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116390756] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:25:11,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:25:11,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-14 01:25:11,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815344906] [2025-04-14 01:25:11,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:25:11,046 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-14 01:25:11,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:25:11,047 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-14 01:25:11,047 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-04-14 01:25:11,056 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2025-04-14 01:25:11,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 819 transitions, 22619 flow. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:25:11,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:25:11,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2025-04-14 01:25:11,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:25:38,393 INFO L116 PetriNetUnfolderBase]: 95053/146144 cut-off events. [2025-04-14 01:25:38,397 INFO L117 PetriNetUnfolderBase]: For 1684034/1688215 co-relation queries the response was YES. [2025-04-14 01:25:40,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 877294 conditions, 146144 events. 95053/146144 cut-off events. For 1684034/1688215 co-relation queries the response was YES. Maximal size of possible extension queue 8101. Compared 1318496 event pairs, 32371 based on Foata normal form. 1143/144836 useless extension candidates. Maximal degree in co-relation 811496. Up to 114246 conditions per place. [2025-04-14 01:25:40,849 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 442 selfloop transitions, 439 changer transitions 27/921 dead transitions. [2025-04-14 01:25:40,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 921 transitions, 24434 flow [2025-04-14 01:25:40,850 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-14 01:25:40,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-04-14 01:25:40,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 219 transitions. [2025-04-14 01:25:40,851 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5824468085106383 [2025-04-14 01:25:40,851 INFO L175 Difference]: Start difference. First operand has 187 places, 819 transitions, 22619 flow. Second operand 8 states and 219 transitions. [2025-04-14 01:25:40,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 921 transitions, 24434 flow Received shutdown request... [2025-04-14 01:26:12,534 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2025-04-14 01:26:12,649 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2025-04-14 01:26:12,649 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-04-14 01:26:12,649 WARN L610 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2025-04-14 01:26:12,659 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2025-04-14 01:26:12,659 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2025-04-14 01:26:12,659 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2025-04-14 01:26:12,659 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2025-04-14 01:26:12,659 INFO L422 BasicCegarLoop]: Path program histogram: [13, 1, 1, 1, 1, 1, 1] [2025-04-14 01:26:12,672 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-14 01:26:12,672 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-14 01:26:12,680 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.04 01:26:12 BasicIcfg [2025-04-14 01:26:12,680 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-14 01:26:12,681 INFO L158 Benchmark]: Toolchain (without parser) took 744770.61ms. Allocated memory was 167.8MB in the beginning and 7.1GB in the end (delta: 7.0GB). Free memory was 119.8MB in the beginning and 4.4GB in the end (delta: -4.3GB). Peak memory consumption was 7.7GB. Max. memory is 8.0GB. [2025-04-14 01:26:12,681 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 159.4MB. Free memory is still 86.2MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-14 01:26:12,681 INFO L158 Benchmark]: CACSL2BoogieTranslator took 278.59ms. Allocated memory is still 167.8MB. Free memory was 119.8MB in the beginning and 103.5MB in the end (delta: 16.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2025-04-14 01:26:12,681 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.00ms. Allocated memory is still 167.8MB. Free memory was 103.5MB in the beginning and 100.9MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-14 01:26:12,682 INFO L158 Benchmark]: Boogie Preprocessor took 67.20ms. Allocated memory is still 167.8MB. Free memory was 100.9MB in the beginning and 98.5MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-14 01:26:12,682 INFO L158 Benchmark]: IcfgBuilder took 951.15ms. Allocated memory is still 167.8MB. Free memory was 98.5MB in the beginning and 81.1MB in the end (delta: 17.4MB). Peak memory consumption was 79.2MB. Max. memory is 8.0GB. [2025-04-14 01:26:12,682 INFO L158 Benchmark]: TraceAbstraction took 743418.81ms. Allocated memory was 167.8MB in the beginning and 7.1GB in the end (delta: 7.0GB). Free memory was 80.2MB in the beginning and 4.4GB in the end (delta: -4.3GB). Peak memory consumption was 7.6GB. Max. memory is 8.0GB. [2025-04-14 01:26:12,683 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 159.4MB. Free memory is still 86.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 278.59ms. Allocated memory is still 167.8MB. Free memory was 119.8MB in the beginning and 103.5MB in the end (delta: 16.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 48.00ms. Allocated memory is still 167.8MB. Free memory was 103.5MB in the beginning and 100.9MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 67.20ms. Allocated memory is still 167.8MB. Free memory was 100.9MB in the beginning and 98.5MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * IcfgBuilder took 951.15ms. Allocated memory is still 167.8MB. Free memory was 98.5MB in the beginning and 81.1MB in the end (delta: 17.4MB). Peak memory consumption was 79.2MB. Max. memory is 8.0GB. * TraceAbstraction took 743418.81ms. Allocated memory was 167.8MB in the beginning and 7.1GB in the end (delta: 7.0GB). Free memory was 80.2MB in the beginning and 4.4GB in the end (delta: -4.3GB). Peak memory consumption was 7.6GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 148]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 138]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 141]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 139]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 140]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 70 locations, 79 edges, 5 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: 743.3s, OverallIterations: 19, TraceHistogramMax: 1, PathProgramHistogramMax: 13, EmptinessCheckTime: 0.0s, AutomataDifference: 738.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1460 SdHoareTripleChecker+Valid, 4.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1429 mSDsluCounter, 169 SdHoareTripleChecker+Invalid, 3.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 133 mSDsCounter, 52 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5188 IncrementalHoareTripleChecker+Invalid, 5240 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 52 mSolverCounterUnsat, 36 mSDtfsCounter, 5188 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 193 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22619occurred in iteration=18, InterpolantAutomatonStates: 125, 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: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 683 NumberOfCodeBlocks, 675 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 663 ConstructedInterpolants, 0 QuantifiedInterpolants, 5085 SizeOfPredicates, 6 NumberOfNonLiveVariables, 280 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 20 InterpolantComputations, 19 PerfectInterpolantSequences, 24/25 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, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown