/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-counter-determinism.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-14 01:02:24,886 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-14 01:02:24,921 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 01:02:24,927 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-14 01:02:24,928 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-14 01:02:24,956 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-14 01:02:24,956 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-14 01:02:24,956 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-14 01:02:24,957 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-14 01:02:24,957 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-14 01:02:24,957 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-14 01:02:24,957 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-14 01:02:24,957 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-14 01:02:24,957 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-14 01:02:24,957 INFO L153 SettingsManager]: * Use SBE=true [2025-04-14 01:02:24,957 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-14 01:02:24,957 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-14 01:02:24,957 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-14 01:02:24,958 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-14 01:02:24,958 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-14 01:02:24,958 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-14 01:02:24,958 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-14 01:02:24,958 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-14 01:02:24,958 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-14 01:02:24,958 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-14 01:02:24,958 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-14 01:02:24,958 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-14 01:02:24,958 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-14 01:02:24,958 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-14 01:02:24,958 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 01:02:24,958 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 01:02:24,958 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 01:02:24,958 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 01:02:24,958 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-14 01:02:24,958 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 01:02:24,959 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 01:02:24,959 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 01:02:24,959 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 01:02:24,959 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-14 01:02:24,959 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-14 01:02:24,959 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-14 01:02:24,959 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-14 01:02:24,959 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-14 01:02:24,959 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-14 01:02:24,959 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-14 01:02:24,959 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-14 01:02:24,959 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-14 01:02:24,959 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 01:02:25,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-14 01:02:25,211 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-14 01:02:25,213 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-14 01:02:25,214 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-14 01:02:25,214 INFO L274 PluginConnector]: CDTParser initialized [2025-04-14 01:02:25,215 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-counter-determinism.wvr.c [2025-04-14 01:02:26,526 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1f81cd3b/1c7163e591d840cd98e9c31baa3ee54a/FLAG50ab55fa7 [2025-04-14 01:02:26,724 INFO L389 CDTParser]: Found 1 translation units. [2025-04-14 01:02:26,725 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-counter-determinism.wvr.c [2025-04-14 01:02:26,731 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1f81cd3b/1c7163e591d840cd98e9c31baa3ee54a/FLAG50ab55fa7 [2025-04-14 01:02:27,527 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1f81cd3b/1c7163e591d840cd98e9c31baa3ee54a [2025-04-14 01:02:27,530 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-14 01:02:27,531 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-14 01:02:27,533 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-14 01:02:27,533 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-14 01:02:27,537 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-14 01:02:27,537 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 01:02:27" (1/1) ... [2025-04-14 01:02:27,538 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68caecdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:02:27, skipping insertion in model container [2025-04-14 01:02:27,538 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 01:02:27" (1/1) ... [2025-04-14 01:02:27,551 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-14 01:02:27,726 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-counter-determinism.wvr.c[2218,2231] [2025-04-14 01:02:27,729 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 01:02:27,737 INFO L200 MainTranslator]: Completed pre-run [2025-04-14 01:02:27,772 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-counter-determinism.wvr.c[2218,2231] [2025-04-14 01:02:27,773 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 01:02:27,789 INFO L204 MainTranslator]: Completed translation [2025-04-14 01:02:27,790 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:02:27 WrapperNode [2025-04-14 01:02:27,790 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-14 01:02:27,790 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-14 01:02:27,790 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-14 01:02:27,791 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-14 01:02:27,796 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:02:27" (1/1) ... [2025-04-14 01:02:27,802 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:02:27" (1/1) ... [2025-04-14 01:02:27,818 INFO L138 Inliner]: procedures = 20, calls = 13, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 88 [2025-04-14 01:02:27,818 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-14 01:02:27,820 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-14 01:02:27,820 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-14 01:02:27,820 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-14 01:02:27,825 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:02:27" (1/1) ... [2025-04-14 01:02:27,825 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:02:27" (1/1) ... [2025-04-14 01:02:27,830 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:02:27" (1/1) ... [2025-04-14 01:02:27,840 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-04-14 01:02:27,841 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:02:27" (1/1) ... [2025-04-14 01:02:27,841 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:02:27" (1/1) ... [2025-04-14 01:02:27,843 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:02:27" (1/1) ... [2025-04-14 01:02:27,844 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:02:27" (1/1) ... [2025-04-14 01:02:27,844 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:02:27" (1/1) ... [2025-04-14 01:02:27,845 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:02:27" (1/1) ... [2025-04-14 01:02:27,852 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-14 01:02:27,853 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-14 01:02:27,853 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-14 01:02:27,853 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-14 01:02:27,854 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:02:27" (1/1) ... [2025-04-14 01:02:27,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 01:02:27,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:02:27,877 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 01:02:27,883 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 01:02:27,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-14 01:02:27,897 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-14 01:02:27,897 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-14 01:02:27,897 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-14 01:02:27,897 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-14 01:02:27,897 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-14 01:02:27,897 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-14 01:02:27,897 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-04-14 01:02:27,898 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-04-14 01:02:27,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-14 01:02:27,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-14 01:02:27,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-14 01:02:27,899 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 01:02:27,991 INFO L256 CfgBuilder]: Building ICFG [2025-04-14 01:02:27,992 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-14 01:02:28,137 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-14 01:02:28,137 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-14 01:02:28,138 INFO L318 CfgBuilder]: Performing block encoding [2025-04-14 01:02:28,243 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-14 01:02:28,247 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-14 01:02:28,251 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-14 01:02:28,253 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-14 01:02:28,257 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-14 01:02:28,257 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 01:02:28 BoogieIcfgContainer [2025-04-14 01:02:28,257 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-14 01:02:28,258 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-14 01:02:28,258 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-14 01:02:28,261 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-14 01:02:28,261 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.04 01:02:27" (1/3) ... [2025-04-14 01:02:28,262 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fd8399f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 01:02:28, skipping insertion in model container [2025-04-14 01:02:28,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:02:27" (2/3) ... [2025-04-14 01:02:28,262 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fd8399f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 01:02:28, skipping insertion in model container [2025-04-14 01:02:28,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 01:02:28" (3/3) ... [2025-04-14 01:02:28,263 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-counter-determinism.wvr.c [2025-04-14 01:02:28,273 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-14 01:02:28,274 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-counter-determinism.wvr.c that has 5 procedures, 32 locations, 35 edges, 1 initial locations, 4 loop locations, and 1 error locations. [2025-04-14 01:02:28,274 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-14 01:02:28,321 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-04-14 01:02:28,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 39 transitions, 106 flow [2025-04-14 01:02:28,370 INFO L116 PetriNetUnfolderBase]: 8/35 cut-off events. [2025-04-14 01:02:28,372 INFO L117 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-04-14 01:02:28,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 35 events. 8/35 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2025-04-14 01:02:28,375 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 39 transitions, 106 flow [2025-04-14 01:02:28,377 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 34 transitions, 92 flow [2025-04-14 01:02:28,385 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-14 01:02:28,394 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;@1f0e368d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-14 01:02:28,395 INFO L341 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-04-14 01:02:28,405 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-14 01:02:28,405 INFO L116 PetriNetUnfolderBase]: 8/33 cut-off events. [2025-04-14 01:02:28,405 INFO L117 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-04-14 01:02:28,405 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:02:28,406 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:02:28,406 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 01:02:28,410 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:02:28,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1069800881, now seen corresponding path program 1 times [2025-04-14 01:02:28,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:02:28,415 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361400017] [2025-04-14 01:02:28,415 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:02:28,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:02:28,476 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-14 01:02:28,508 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 01:02:28,509 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:02:28,509 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:02:28,705 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 01:02:28,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:02:28,707 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361400017] [2025-04-14 01:02:28,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361400017] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:02:28,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:02:28,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-04-14 01:02:28,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906535935] [2025-04-14 01:02:28,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:02:28,716 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-14 01:02:28,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:02:28,738 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-14 01:02:28,738 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-14 01:02:28,739 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 39 [2025-04-14 01:02:28,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 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 01:02:28,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:02:28,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 39 [2025-04-14 01:02:28,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:02:29,160 INFO L116 PetriNetUnfolderBase]: 3224/4088 cut-off events. [2025-04-14 01:02:29,160 INFO L117 PetriNetUnfolderBase]: For 305/305 co-relation queries the response was YES. [2025-04-14 01:02:29,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8494 conditions, 4088 events. 3224/4088 cut-off events. For 305/305 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 14065 event pairs, 685 based on Foata normal form. 1/2769 useless extension candidates. Maximal degree in co-relation 7524. Up to 3696 conditions per place. [2025-04-14 01:02:29,191 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 48 selfloop transitions, 3 changer transitions 2/53 dead transitions. [2025-04-14 01:02:29,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 53 transitions, 257 flow [2025-04-14 01:02:29,194 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-14 01:02:29,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-14 01:02:29,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 68 transitions. [2025-04-14 01:02:29,205 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5811965811965812 [2025-04-14 01:02:29,207 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 92 flow. Second operand 3 states and 68 transitions. [2025-04-14 01:02:29,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 53 transitions, 257 flow [2025-04-14 01:02:29,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 53 transitions, 227 flow, removed 0 selfloop flow, removed 8 redundant places. [2025-04-14 01:02:29,220 INFO L231 Difference]: Finished difference. Result has 34 places, 36 transitions, 99 flow [2025-04-14 01:02:29,222 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=34, PETRI_TRANSITIONS=36} [2025-04-14 01:02:29,225 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, -5 predicate places. [2025-04-14 01:02:29,225 INFO L485 AbstractCegarLoop]: Abstraction has has 34 places, 36 transitions, 99 flow [2025-04-14 01:02:29,225 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 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 01:02:29,225 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:02:29,225 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] [2025-04-14 01:02:29,225 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-14 01:02:29,226 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 01:02:29,226 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:02:29,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1932968808, now seen corresponding path program 1 times [2025-04-14 01:02:29,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:02:29,226 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666005584] [2025-04-14 01:02:29,227 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:02:29,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:02:29,238 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-14 01:02:29,242 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-14 01:02:29,242 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:02:29,242 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:02:29,299 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 01:02:29,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:02:29,299 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666005584] [2025-04-14 01:02:29,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666005584] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:02:29,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:02:29,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-14 01:02:29,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125192460] [2025-04-14 01:02:29,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:02:29,300 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-14 01:02:29,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:02:29,301 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-14 01:02:29,301 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-14 01:02:29,301 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 39 [2025-04-14 01:02:29,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 36 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 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 01:02:29,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:02:29,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 39 [2025-04-14 01:02:29,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:02:29,690 INFO L116 PetriNetUnfolderBase]: 4320/5474 cut-off events. [2025-04-14 01:02:29,690 INFO L117 PetriNetUnfolderBase]: For 716/716 co-relation queries the response was YES. [2025-04-14 01:02:29,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12249 conditions, 5474 events. 4320/5474 cut-off events. For 716/716 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 20033 event pairs, 1378 based on Foata normal form. 160/4261 useless extension candidates. Maximal degree in co-relation 2043. Up to 4127 conditions per place. [2025-04-14 01:02:29,715 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 56 selfloop transitions, 3 changer transitions 0/59 dead transitions. [2025-04-14 01:02:29,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 59 transitions, 277 flow [2025-04-14 01:02:29,715 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-14 01:02:29,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-14 01:02:29,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2025-04-14 01:02:29,717 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6068376068376068 [2025-04-14 01:02:29,717 INFO L175 Difference]: Start difference. First operand has 34 places, 36 transitions, 99 flow. Second operand 3 states and 71 transitions. [2025-04-14 01:02:29,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 59 transitions, 277 flow [2025-04-14 01:02:29,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 59 transitions, 273 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-14 01:02:29,718 INFO L231 Difference]: Finished difference. Result has 36 places, 38 transitions, 119 flow [2025-04-14 01:02:29,719 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=36, PETRI_TRANSITIONS=38} [2025-04-14 01:02:29,720 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, -3 predicate places. [2025-04-14 01:02:29,720 INFO L485 AbstractCegarLoop]: Abstraction has has 36 places, 38 transitions, 119 flow [2025-04-14 01:02:29,720 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 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 01:02:29,720 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:02:29,720 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] [2025-04-14 01:02:29,720 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-14 01:02:29,721 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 01:02:29,722 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:02:29,722 INFO L85 PathProgramCache]: Analyzing trace with hash 273732264, now seen corresponding path program 2 times [2025-04-14 01:02:29,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:02:29,723 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420494958] [2025-04-14 01:02:29,723 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 01:02:29,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:02:29,735 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 1 equivalence classes. [2025-04-14 01:02:29,739 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-14 01:02:29,739 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-14 01:02:29,739 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:02:29,802 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 01:02:29,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:02:29,802 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420494958] [2025-04-14 01:02:29,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420494958] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:02:29,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:02:29,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-14 01:02:29,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140955505] [2025-04-14 01:02:29,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:02:29,803 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-14 01:02:29,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:02:29,803 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-14 01:02:29,803 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-04-14 01:02:29,804 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 39 [2025-04-14 01:02:29,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 38 transitions, 119 flow. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 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 01:02:29,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:02:29,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 39 [2025-04-14 01:02:29,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:02:30,186 INFO L116 PetriNetUnfolderBase]: 3710/4864 cut-off events. [2025-04-14 01:02:30,187 INFO L117 PetriNetUnfolderBase]: For 1452/1452 co-relation queries the response was YES. [2025-04-14 01:02:30,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12213 conditions, 4864 events. 3710/4864 cut-off events. For 1452/1452 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 19590 event pairs, 482 based on Foata normal form. 610/4433 useless extension candidates. Maximal degree in co-relation 3020. Up to 3340 conditions per place. [2025-04-14 01:02:30,217 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 65 selfloop transitions, 5 changer transitions 2/72 dead transitions. [2025-04-14 01:02:30,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 72 transitions, 354 flow [2025-04-14 01:02:30,218 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-14 01:02:30,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-04-14 01:02:30,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2025-04-14 01:02:30,218 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5705128205128205 [2025-04-14 01:02:30,218 INFO L175 Difference]: Start difference. First operand has 36 places, 38 transitions, 119 flow. Second operand 4 states and 89 transitions. [2025-04-14 01:02:30,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 72 transitions, 354 flow [2025-04-14 01:02:30,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 72 transitions, 350 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-14 01:02:30,220 INFO L231 Difference]: Finished difference. Result has 40 places, 40 transitions, 148 flow [2025-04-14 01:02:30,220 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=40, PETRI_TRANSITIONS=40} [2025-04-14 01:02:30,221 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 1 predicate places. [2025-04-14 01:02:30,221 INFO L485 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 148 flow [2025-04-14 01:02:30,221 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 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 01:02:30,221 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:02:30,221 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] [2025-04-14 01:02:30,221 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-14 01:02:30,221 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 01:02:30,222 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:02:30,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1341421234, now seen corresponding path program 1 times [2025-04-14 01:02:30,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:02:30,222 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993032526] [2025-04-14 01:02:30,222 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:02:30,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:02:30,228 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-14 01:02:30,232 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-14 01:02:30,232 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:02:30,232 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:02:30,274 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 01:02:30,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:02:30,275 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993032526] [2025-04-14 01:02:30,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993032526] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:02:30,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:02:30,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-14 01:02:30,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488673043] [2025-04-14 01:02:30,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:02:30,275 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-14 01:02:30,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:02:30,276 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-14 01:02:30,276 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-14 01:02:30,276 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 39 [2025-04-14 01:02:30,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 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 01:02:30,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:02:30,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 39 [2025-04-14 01:02:30,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:02:30,569 INFO L116 PetriNetUnfolderBase]: 3599/4697 cut-off events. [2025-04-14 01:02:30,570 INFO L117 PetriNetUnfolderBase]: For 2688/2688 co-relation queries the response was YES. [2025-04-14 01:02:30,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12349 conditions, 4697 events. 3599/4697 cut-off events. For 2688/2688 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 16642 event pairs, 2245 based on Foata normal form. 48/3704 useless extension candidates. Maximal degree in co-relation 4100. Up to 4531 conditions per place. [2025-04-14 01:02:30,589 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 36 selfloop transitions, 0 changer transitions 19/55 dead transitions. [2025-04-14 01:02:30,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 55 transitions, 309 flow [2025-04-14 01:02:30,589 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-14 01:02:30,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-14 01:02:30,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 63 transitions. [2025-04-14 01:02:30,590 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5384615384615384 [2025-04-14 01:02:30,590 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 148 flow. Second operand 3 states and 63 transitions. [2025-04-14 01:02:30,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 55 transitions, 309 flow [2025-04-14 01:02:30,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 55 transitions, 305 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-14 01:02:30,592 INFO L231 Difference]: Finished difference. Result has 42 places, 36 transitions, 126 flow [2025-04-14 01:02:30,592 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=42, PETRI_TRANSITIONS=36} [2025-04-14 01:02:30,593 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 3 predicate places. [2025-04-14 01:02:30,593 INFO L485 AbstractCegarLoop]: Abstraction has has 42 places, 36 transitions, 126 flow [2025-04-14 01:02:30,593 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 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 01:02:30,593 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:02:30,593 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] [2025-04-14 01:02:30,593 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-14 01:02:30,593 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 01:02:30,594 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:02:30,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1655234015, now seen corresponding path program 1 times [2025-04-14 01:02:30,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:02:30,594 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133791350] [2025-04-14 01:02:30,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:02:30,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:02:30,600 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-04-14 01:02:30,615 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-04-14 01:02:30,615 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:02:30,615 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:02:30,835 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 01:02:30,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:02:30,836 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133791350] [2025-04-14 01:02:30,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133791350] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:02:30,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:02:30,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-14 01:02:30,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69331880] [2025-04-14 01:02:30,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:02:30,836 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-14 01:02:30,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:02:30,836 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-14 01:02:30,837 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-04-14 01:02:30,837 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 39 [2025-04-14 01:02:30,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 126 flow. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 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 01:02:30,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:02:30,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 39 [2025-04-14 01:02:30,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:02:31,533 INFO L116 PetriNetUnfolderBase]: 8943/11706 cut-off events. [2025-04-14 01:02:31,534 INFO L117 PetriNetUnfolderBase]: For 4629/4629 co-relation queries the response was YES. [2025-04-14 01:02:31,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29857 conditions, 11706 events. 8943/11706 cut-off events. For 4629/4629 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 49521 event pairs, 1191 based on Foata normal form. 186/9117 useless extension candidates. Maximal degree in co-relation 29849. Up to 4949 conditions per place. [2025-04-14 01:02:31,582 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 135 selfloop transitions, 21 changer transitions 3/159 dead transitions. [2025-04-14 01:02:31,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 159 transitions, 847 flow [2025-04-14 01:02:31,584 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-14 01:02:31,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-04-14 01:02:31,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2025-04-14 01:02:31,585 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5865384615384616 [2025-04-14 01:02:31,585 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 126 flow. Second operand 8 states and 183 transitions. [2025-04-14 01:02:31,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 159 transitions, 847 flow [2025-04-14 01:02:31,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 159 transitions, 818 flow, removed 5 selfloop flow, removed 2 redundant places. [2025-04-14 01:02:31,591 INFO L231 Difference]: Finished difference. Result has 51 places, 54 transitions, 274 flow [2025-04-14 01:02:31,591 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=274, PETRI_PLACES=51, PETRI_TRANSITIONS=54} [2025-04-14 01:02:31,592 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 12 predicate places. [2025-04-14 01:02:31,592 INFO L485 AbstractCegarLoop]: Abstraction has has 51 places, 54 transitions, 274 flow [2025-04-14 01:02:31,592 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 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 01:02:31,592 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:02:31,592 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] [2025-04-14 01:02:31,592 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-14 01:02:31,593 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 01:02:31,593 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:02:31,593 INFO L85 PathProgramCache]: Analyzing trace with hash -344740331, now seen corresponding path program 2 times [2025-04-14 01:02:31,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:02:31,594 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9140484] [2025-04-14 01:02:31,594 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 01:02:31,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:02:31,601 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 1 equivalence classes. [2025-04-14 01:02:31,607 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-04-14 01:02:31,607 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-14 01:02:31,607 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:02:31,736 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 01:02:31,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:02:31,736 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9140484] [2025-04-14 01:02:31,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9140484] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:02:31,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:02:31,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-14 01:02:31,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022810842] [2025-04-14 01:02:31,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:02:31,737 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-14 01:02:31,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:02:31,737 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-14 01:02:31,737 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-04-14 01:02:31,738 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 39 [2025-04-14 01:02:31,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 54 transitions, 274 flow. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 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 01:02:31,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:02:31,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 39 [2025-04-14 01:02:31,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:02:32,806 INFO L116 PetriNetUnfolderBase]: 13267/17291 cut-off events. [2025-04-14 01:02:32,807 INFO L117 PetriNetUnfolderBase]: For 20260/20260 co-relation queries the response was YES. [2025-04-14 01:02:32,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55292 conditions, 17291 events. 13267/17291 cut-off events. For 20260/20260 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 77416 event pairs, 2792 based on Foata normal form. 1/14626 useless extension candidates. Maximal degree in co-relation 55280. Up to 11612 conditions per place. [2025-04-14 01:02:33,006 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 117 selfloop transitions, 20 changer transitions 1/138 dead transitions. [2025-04-14 01:02:33,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 138 transitions, 881 flow [2025-04-14 01:02:33,007 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-14 01:02:33,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-14 01:02:33,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2025-04-14 01:02:33,008 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5641025641025641 [2025-04-14 01:02:33,008 INFO L175 Difference]: Start difference. First operand has 51 places, 54 transitions, 274 flow. Second operand 6 states and 132 transitions. [2025-04-14 01:02:33,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 138 transitions, 881 flow [2025-04-14 01:02:33,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 138 transitions, 877 flow, removed 2 selfloop flow, removed 0 redundant places. [2025-04-14 01:02:33,017 INFO L231 Difference]: Finished difference. Result has 57 places, 66 transitions, 403 flow [2025-04-14 01:02:33,017 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=403, PETRI_PLACES=57, PETRI_TRANSITIONS=66} [2025-04-14 01:02:33,017 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 18 predicate places. [2025-04-14 01:02:33,017 INFO L485 AbstractCegarLoop]: Abstraction has has 57 places, 66 transitions, 403 flow [2025-04-14 01:02:33,017 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 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 01:02:33,017 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:02:33,017 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] [2025-04-14 01:02:33,018 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-04-14 01:02:33,018 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 01:02:33,018 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:02:33,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1206025625, now seen corresponding path program 3 times [2025-04-14 01:02:33,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:02:33,018 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686484916] [2025-04-14 01:02:33,018 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 01:02:33,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:02:33,024 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 1 equivalence classes. [2025-04-14 01:02:33,028 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-04-14 01:02:33,028 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-14 01:02:33,028 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:02:33,158 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 01:02:33,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:02:33,158 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686484916] [2025-04-14 01:02:33,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686484916] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:02:33,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:02:33,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-14 01:02:33,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616134215] [2025-04-14 01:02:33,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:02:33,159 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-14 01:02:33,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:02:33,159 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-14 01:02:33,159 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-04-14 01:02:33,159 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 39 [2025-04-14 01:02:33,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 66 transitions, 403 flow. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 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 01:02:33,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:02:33,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 39 [2025-04-14 01:02:33,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:02:34,337 INFO L116 PetriNetUnfolderBase]: 18227/23749 cut-off events. [2025-04-14 01:02:34,337 INFO L117 PetriNetUnfolderBase]: For 35389/35389 co-relation queries the response was YES. [2025-04-14 01:02:34,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80364 conditions, 23749 events. 18227/23749 cut-off events. For 35389/35389 co-relation queries the response was YES. Maximal size of possible extension queue 796. Compared 112728 event pairs, 2870 based on Foata normal form. 133/20166 useless extension candidates. Maximal degree in co-relation 80350. Up to 12248 conditions per place. [2025-04-14 01:02:34,439 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 150 selfloop transitions, 45 changer transitions 2/197 dead transitions. [2025-04-14 01:02:34,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 197 transitions, 1357 flow [2025-04-14 01:02:34,440 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-14 01:02:34,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-04-14 01:02:34,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2025-04-14 01:02:34,441 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2025-04-14 01:02:34,441 INFO L175 Difference]: Start difference. First operand has 57 places, 66 transitions, 403 flow. Second operand 8 states and 182 transitions. [2025-04-14 01:02:34,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 197 transitions, 1357 flow [2025-04-14 01:02:34,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 197 transitions, 1338 flow, removed 4 selfloop flow, removed 2 redundant places. [2025-04-14 01:02:34,454 INFO L231 Difference]: Finished difference. Result has 66 places, 91 transitions, 738 flow [2025-04-14 01:02:34,455 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=738, PETRI_PLACES=66, PETRI_TRANSITIONS=91} [2025-04-14 01:02:34,455 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 27 predicate places. [2025-04-14 01:02:34,455 INFO L485 AbstractCegarLoop]: Abstraction has has 66 places, 91 transitions, 738 flow [2025-04-14 01:02:34,455 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 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 01:02:34,455 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:02:34,455 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] [2025-04-14 01:02:34,457 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-04-14 01:02:34,457 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 01:02:34,457 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:02:34,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1330758291, now seen corresponding path program 4 times [2025-04-14 01:02:34,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:02:34,457 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904635709] [2025-04-14 01:02:34,458 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 01:02:34,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:02:34,465 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 26 statements into 2 equivalence classes. [2025-04-14 01:02:34,476 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-04-14 01:02:34,476 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-14 01:02:34,476 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:02:34,612 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 01:02:34,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:02:34,612 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904635709] [2025-04-14 01:02:34,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904635709] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:02:34,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:02:34,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-04-14 01:02:34,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353480879] [2025-04-14 01:02:34,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:02:34,612 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-04-14 01:02:34,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:02:34,613 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-04-14 01:02:34,613 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-04-14 01:02:34,613 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 39 [2025-04-14 01:02:34,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 91 transitions, 738 flow. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 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 01:02:34,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:02:34,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 39 [2025-04-14 01:02:34,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:02:37,051 INFO L116 PetriNetUnfolderBase]: 27517/36221 cut-off events. [2025-04-14 01:02:37,051 INFO L117 PetriNetUnfolderBase]: For 100205/100205 co-relation queries the response was YES. [2025-04-14 01:02:37,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134579 conditions, 36221 events. 27517/36221 cut-off events. For 100205/100205 co-relation queries the response was YES. Maximal size of possible extension queue 1045. Compared 184133 event pairs, 3281 based on Foata normal form. 1195/31805 useless extension candidates. Maximal degree in co-relation 134560. Up to 11271 conditions per place. [2025-04-14 01:02:37,244 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 205 selfloop transitions, 115 changer transitions 4/324 dead transitions. [2025-04-14 01:02:37,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 324 transitions, 2651 flow [2025-04-14 01:02:37,244 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-04-14 01:02:37,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-04-14 01:02:37,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 281 transitions. [2025-04-14 01:02:37,246 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5542406311637081 [2025-04-14 01:02:37,246 INFO L175 Difference]: Start difference. First operand has 66 places, 91 transitions, 738 flow. Second operand 13 states and 281 transitions. [2025-04-14 01:02:37,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 324 transitions, 2651 flow [2025-04-14 01:02:37,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 324 transitions, 2564 flow, removed 42 selfloop flow, removed 1 redundant places. [2025-04-14 01:02:37,329 INFO L231 Difference]: Finished difference. Result has 85 places, 156 transitions, 1745 flow [2025-04-14 01:02:37,329 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=709, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1745, PETRI_PLACES=85, PETRI_TRANSITIONS=156} [2025-04-14 01:02:37,330 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 46 predicate places. [2025-04-14 01:02:37,330 INFO L485 AbstractCegarLoop]: Abstraction has has 85 places, 156 transitions, 1745 flow [2025-04-14 01:02:37,330 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 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 01:02:37,330 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:02:37,330 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:02:37,330 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-04-14 01:02:37,331 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 01:02:37,331 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:02:37,331 INFO L85 PathProgramCache]: Analyzing trace with hash 962118584, now seen corresponding path program 1 times [2025-04-14 01:02:37,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:02:37,331 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535595345] [2025-04-14 01:02:37,331 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:02:37,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:02:37,337 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-04-14 01:02:37,342 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-04-14 01:02:37,342 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:02:37,342 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:02:37,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:02:37,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:02:37,398 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535595345] [2025-04-14 01:02:37,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535595345] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:02:37,398 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702945823] [2025-04-14 01:02:37,398 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:02:37,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:02:37,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:02:37,406 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 01:02:37,407 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 01:02:37,453 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-04-14 01:02:37,474 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-04-14 01:02:37,474 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:02:37,474 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:02:37,476 INFO L256 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-04-14 01:02:37,479 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:02:37,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:02:37,570 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:02:37,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:02:37,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702945823] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 01:02:37,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 01:02:37,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2025-04-14 01:02:37,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348982234] [2025-04-14 01:02:37,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 01:02:37,620 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-04-14 01:02:37,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:02:37,621 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-04-14 01:02:37,621 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-04-14 01:02:37,621 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 39 [2025-04-14 01:02:37,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 156 transitions, 1745 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:02:37,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:02:37,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 39 [2025-04-14 01:02:37,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:02:41,249 INFO L116 PetriNetUnfolderBase]: 39284/51524 cut-off events. [2025-04-14 01:02:41,250 INFO L117 PetriNetUnfolderBase]: For 292024/292024 co-relation queries the response was YES. [2025-04-14 01:02:41,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223463 conditions, 51524 events. 39284/51524 cut-off events. For 292024/292024 co-relation queries the response was YES. Maximal size of possible extension queue 1414. Compared 274079 event pairs, 6390 based on Foata normal form. 0/44187 useless extension candidates. Maximal degree in co-relation 223435. Up to 19907 conditions per place. [2025-04-14 01:02:41,574 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 609 selfloop transitions, 21 changer transitions 0/630 dead transitions. [2025-04-14 01:02:41,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 630 transitions, 8198 flow [2025-04-14 01:02:41,574 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-14 01:02:41,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-04-14 01:02:41,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 209 transitions. [2025-04-14 01:02:41,575 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5358974358974359 [2025-04-14 01:02:41,575 INFO L175 Difference]: Start difference. First operand has 85 places, 156 transitions, 1745 flow. Second operand 10 states and 209 transitions. [2025-04-14 01:02:41,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 630 transitions, 8198 flow [2025-04-14 01:02:42,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 630 transitions, 7660 flow, removed 266 selfloop flow, removed 1 redundant places. [2025-04-14 01:02:42,020 INFO L231 Difference]: Finished difference. Result has 99 places, 174 transitions, 1746 flow [2025-04-14 01:02:42,020 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1608, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1746, PETRI_PLACES=99, PETRI_TRANSITIONS=174} [2025-04-14 01:02:42,023 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 60 predicate places. [2025-04-14 01:02:42,023 INFO L485 AbstractCegarLoop]: Abstraction has has 99 places, 174 transitions, 1746 flow [2025-04-14 01:02:42,023 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:02:42,023 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:02:42,023 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:02:42,029 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 01:02:42,224 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 01:02:42,224 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 01:02:42,225 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:02:42,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1142311748, now seen corresponding path program 2 times [2025-04-14 01:02:42,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:02:42,225 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44763336] [2025-04-14 01:02:42,225 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 01:02:42,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:02:42,230 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-04-14 01:02:42,232 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 26 of 28 statements. [2025-04-14 01:02:42,232 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-14 01:02:42,232 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:02:42,252 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 01:02:42,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:02:42,253 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44763336] [2025-04-14 01:02:42,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44763336] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:02:42,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:02:42,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-14 01:02:42,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103453817] [2025-04-14 01:02:42,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:02:42,253 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-14 01:02:42,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:02:42,253 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-14 01:02:42,253 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-14 01:02:42,253 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 39 [2025-04-14 01:02:42,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 174 transitions, 1746 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 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 01:02:42,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:02:42,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 39 [2025-04-14 01:02:42,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:02:46,125 INFO L116 PetriNetUnfolderBase]: 38248/50232 cut-off events. [2025-04-14 01:02:46,125 INFO L117 PetriNetUnfolderBase]: For 324909/324909 co-relation queries the response was YES. [2025-04-14 01:02:46,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246389 conditions, 50232 events. 38248/50232 cut-off events. For 324909/324909 co-relation queries the response was YES. Maximal size of possible extension queue 1372. Compared 263879 event pairs, 10155 based on Foata normal form. 132/48928 useless extension candidates. Maximal degree in co-relation 246354. Up to 48131 conditions per place. [2025-04-14 01:02:46,479 INFO L140 encePairwiseOnDemand]: 36/39 looper letters, 191 selfloop transitions, 5 changer transitions 0/196 dead transitions. [2025-04-14 01:02:46,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 196 transitions, 2292 flow [2025-04-14 01:02:46,484 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-14 01:02:46,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-14 01:02:46,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 57 transitions. [2025-04-14 01:02:46,484 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.48717948717948717 [2025-04-14 01:02:46,484 INFO L175 Difference]: Start difference. First operand has 99 places, 174 transitions, 1746 flow. Second operand 3 states and 57 transitions. [2025-04-14 01:02:46,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 196 transitions, 2292 flow [2025-04-14 01:02:47,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 196 transitions, 2259 flow, removed 11 selfloop flow, removed 1 redundant places. [2025-04-14 01:02:47,026 INFO L231 Difference]: Finished difference. Result has 101 places, 175 transitions, 1751 flow [2025-04-14 01:02:47,026 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1724, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1751, PETRI_PLACES=101, PETRI_TRANSITIONS=175} [2025-04-14 01:02:47,026 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 62 predicate places. [2025-04-14 01:02:47,026 INFO L485 AbstractCegarLoop]: Abstraction has has 101 places, 175 transitions, 1751 flow [2025-04-14 01:02:47,026 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 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 01:02:47,026 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:02:47,026 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:02:47,027 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-04-14 01:02:47,027 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 01:02:47,030 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:02:47,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1691419948, now seen corresponding path program 3 times [2025-04-14 01:02:47,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:02:47,031 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109597862] [2025-04-14 01:02:47,031 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 01:02:47,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:02:47,035 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 28 statements into 1 equivalence classes. [2025-04-14 01:02:47,040 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-04-14 01:02:47,040 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-14 01:02:47,040 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:02:47,082 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 01:02:47,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:02:47,083 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109597862] [2025-04-14 01:02:47,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109597862] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:02:47,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:02:47,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-14 01:02:47,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574608674] [2025-04-14 01:02:47,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:02:47,083 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-14 01:02:47,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:02:47,083 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-14 01:02:47,083 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-14 01:02:47,084 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 39 [2025-04-14 01:02:47,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 175 transitions, 1751 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:02:47,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:02:47,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 39 [2025-04-14 01:02:47,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:02:52,427 INFO L116 PetriNetUnfolderBase]: 52566/69420 cut-off events. [2025-04-14 01:02:52,427 INFO L117 PetriNetUnfolderBase]: For 474375/474375 co-relation queries the response was YES. [2025-04-14 01:02:52,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349319 conditions, 69420 events. 52566/69420 cut-off events. For 474375/474375 co-relation queries the response was YES. Maximal size of possible extension queue 1917. Compared 389953 event pairs, 10734 based on Foata normal form. 2277/70135 useless extension candidates. Maximal degree in co-relation 349282. Up to 44666 conditions per place. [2025-04-14 01:02:53,136 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 468 selfloop transitions, 14 changer transitions 0/482 dead transitions. [2025-04-14 01:02:53,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 482 transitions, 5944 flow [2025-04-14 01:02:53,137 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-14 01:02:53,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-14 01:02:53,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2025-04-14 01:02:53,138 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5948717948717949 [2025-04-14 01:02:53,138 INFO L175 Difference]: Start difference. First operand has 101 places, 175 transitions, 1751 flow. Second operand 5 states and 116 transitions. [2025-04-14 01:02:53,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 482 transitions, 5944 flow [2025-04-14 01:02:54,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 482 transitions, 5910 flow, removed 4 selfloop flow, removed 2 redundant places. [2025-04-14 01:02:54,261 INFO L231 Difference]: Finished difference. Result has 105 places, 183 transitions, 1905 flow [2025-04-14 01:02:54,261 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1739, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1905, PETRI_PLACES=105, PETRI_TRANSITIONS=183} [2025-04-14 01:02:54,261 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 66 predicate places. [2025-04-14 01:02:54,261 INFO L485 AbstractCegarLoop]: Abstraction has has 105 places, 183 transitions, 1905 flow [2025-04-14 01:02:54,261 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:02:54,261 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:02:54,261 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:02:54,262 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-04-14 01:02:54,262 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 01:02:54,262 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:02:54,262 INFO L85 PathProgramCache]: Analyzing trace with hash -400937066, now seen corresponding path program 4 times [2025-04-14 01:02:54,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:02:54,262 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732653383] [2025-04-14 01:02:54,262 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 01:02:54,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:02:54,269 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 28 statements into 2 equivalence classes. [2025-04-14 01:02:54,273 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 27 of 28 statements. [2025-04-14 01:02:54,273 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-04-14 01:02:54,273 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:02:54,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:02:54,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:02:54,309 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732653383] [2025-04-14 01:02:54,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732653383] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:02:54,309 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922840849] [2025-04-14 01:02:54,309 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 01:02:54,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:02:54,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:02:54,313 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:02:54,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-04-14 01:02:54,355 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 28 statements into 2 equivalence classes. [2025-04-14 01:02:54,371 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 27 of 28 statements. [2025-04-14 01:02:54,372 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-04-14 01:02:54,372 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:02:54,374 INFO L256 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-04-14 01:02:54,375 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:02:54,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:02:54,413 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:02:54,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:02:54,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922840849] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 01:02:54,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 01:02:54,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2025-04-14 01:02:54,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169708152] [2025-04-14 01:02:54,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 01:02:54,438 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-14 01:02:54,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:02:54,438 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-14 01:02:54,438 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-04-14 01:02:54,438 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 39 [2025-04-14 01:02:54,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 183 transitions, 1905 flow. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 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 01:02:54,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:02:54,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 39 [2025-04-14 01:02:54,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:03:01,631 INFO L116 PetriNetUnfolderBase]: 70982/93363 cut-off events. [2025-04-14 01:03:01,632 INFO L117 PetriNetUnfolderBase]: For 809650/809650 co-relation queries the response was YES. [2025-04-14 01:03:02,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 495215 conditions, 93363 events. 70982/93363 cut-off events. For 809650/809650 co-relation queries the response was YES. Maximal size of possible extension queue 2381. Compared 534098 event pairs, 14110 based on Foata normal form. 2277/94858 useless extension candidates. Maximal degree in co-relation 495177. Up to 31594 conditions per place. [2025-04-14 01:03:02,359 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 582 selfloop transitions, 49 changer transitions 0/631 dead transitions. [2025-04-14 01:03:02,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 631 transitions, 7909 flow [2025-04-14 01:03:02,361 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-14 01:03:02,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-14 01:03:02,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 128 transitions. [2025-04-14 01:03:02,362 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5470085470085471 [2025-04-14 01:03:02,362 INFO L175 Difference]: Start difference. First operand has 105 places, 183 transitions, 1905 flow. Second operand 6 states and 128 transitions. [2025-04-14 01:03:02,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 631 transitions, 7909 flow [2025-04-14 01:03:03,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 631 transitions, 7893 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-04-14 01:03:03,570 INFO L231 Difference]: Finished difference. Result has 112 places, 222 transitions, 2627 flow [2025-04-14 01:03:03,570 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1895, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2627, PETRI_PLACES=112, PETRI_TRANSITIONS=222} [2025-04-14 01:03:03,571 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 73 predicate places. [2025-04-14 01:03:03,571 INFO L485 AbstractCegarLoop]: Abstraction has has 112 places, 222 transitions, 2627 flow [2025-04-14 01:03:03,571 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 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 01:03:03,571 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:03:03,571 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:03:03,580 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-04-14 01:03:03,775 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-04-14 01:03:03,775 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 01:03:03,775 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:03:03,775 INFO L85 PathProgramCache]: Analyzing trace with hash 447052200, now seen corresponding path program 1 times [2025-04-14 01:03:03,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:03:03,775 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077610902] [2025-04-14 01:03:03,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:03:03,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:03:03,781 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-04-14 01:03:03,785 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-04-14 01:03:03,786 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:03:03,786 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:03:03,820 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 01:03:03,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:03:03,821 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077610902] [2025-04-14 01:03:03,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077610902] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:03:03,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:03:03,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-14 01:03:03,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098909507] [2025-04-14 01:03:03,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:03:03,821 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-14 01:03:03,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:03:03,821 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-14 01:03:03,821 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-04-14 01:03:03,822 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 39 [2025-04-14 01:03:03,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 222 transitions, 2627 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:03:03,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:03:03,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 39 [2025-04-14 01:03:03,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:03:11,891 INFO L116 PetriNetUnfolderBase]: 74710/98229 cut-off events. [2025-04-14 01:03:11,892 INFO L117 PetriNetUnfolderBase]: For 1038735/1038735 co-relation queries the response was YES. [2025-04-14 01:03:12,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 570696 conditions, 98229 events. 74710/98229 cut-off events. For 1038735/1038735 co-relation queries the response was YES. Maximal size of possible extension queue 2533. Compared 563320 event pairs, 30982 based on Foata normal form. 918/98365 useless extension candidates. Maximal degree in co-relation 570654. Up to 89013 conditions per place. [2025-04-14 01:03:12,924 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 394 selfloop transitions, 15 changer transitions 0/409 dead transitions. [2025-04-14 01:03:12,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 409 transitions, 5572 flow [2025-04-14 01:03:12,924 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-14 01:03:12,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-14 01:03:12,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2025-04-14 01:03:12,925 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2025-04-14 01:03:12,925 INFO L175 Difference]: Start difference. First operand has 112 places, 222 transitions, 2627 flow. Second operand 5 states and 104 transitions. [2025-04-14 01:03:12,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 409 transitions, 5572 flow [2025-04-14 01:03:15,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 409 transitions, 5568 flow, removed 2 selfloop flow, removed 0 redundant places. [2025-04-14 01:03:15,029 INFO L231 Difference]: Finished difference. Result has 116 places, 224 transitions, 2675 flow [2025-04-14 01:03:15,029 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2623, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2675, PETRI_PLACES=116, PETRI_TRANSITIONS=224} [2025-04-14 01:03:15,029 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 77 predicate places. [2025-04-14 01:03:15,030 INFO L485 AbstractCegarLoop]: Abstraction has has 116 places, 224 transitions, 2675 flow [2025-04-14 01:03:15,030 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:03:15,030 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:03:15,030 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:03:15,030 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-04-14 01:03:15,030 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 01:03:15,030 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:03:15,030 INFO L85 PathProgramCache]: Analyzing trace with hash 748964648, now seen corresponding path program 2 times [2025-04-14 01:03:15,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:03:15,031 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499604140] [2025-04-14 01:03:15,031 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 01:03:15,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:03:15,037 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-04-14 01:03:15,045 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-04-14 01:03:15,046 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:03:15,046 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:03:15,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:03:15,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:03:15,083 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499604140] [2025-04-14 01:03:15,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499604140] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:03:15,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:03:15,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-14 01:03:15,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763620959] [2025-04-14 01:03:15,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:03:15,083 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-14 01:03:15,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:03:15,084 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-14 01:03:15,084 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-14 01:03:15,084 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 39 [2025-04-14 01:03:15,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 224 transitions, 2675 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:03:15,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:03:15,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 39 [2025-04-14 01:03:15,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:03:22,717 INFO L116 PetriNetUnfolderBase]: 74949/98595 cut-off events. [2025-04-14 01:03:22,717 INFO L117 PetriNetUnfolderBase]: For 1044125/1044125 co-relation queries the response was YES. [2025-04-14 01:03:23,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 575600 conditions, 98595 events. 74949/98595 cut-off events. For 1044125/1044125 co-relation queries the response was YES. Maximal size of possible extension queue 2525. Compared 566668 event pairs, 30307 based on Foata normal form. 106/97919 useless extension candidates. Maximal degree in co-relation 575557. Up to 82958 conditions per place. [2025-04-14 01:03:23,792 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 365 selfloop transitions, 12 changer transitions 23/400 dead transitions. [2025-04-14 01:03:23,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 400 transitions, 5340 flow [2025-04-14 01:03:23,792 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-14 01:03:23,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-14 01:03:23,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 110 transitions. [2025-04-14 01:03:23,793 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5641025641025641 [2025-04-14 01:03:23,793 INFO L175 Difference]: Start difference. First operand has 116 places, 224 transitions, 2675 flow. Second operand 5 states and 110 transitions. [2025-04-14 01:03:23,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 400 transitions, 5340 flow [2025-04-14 01:03:26,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 400 transitions, 5321 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-04-14 01:03:26,080 INFO L231 Difference]: Finished difference. Result has 120 places, 224 transitions, 2690 flow [2025-04-14 01:03:26,080 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2656, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2690, PETRI_PLACES=120, PETRI_TRANSITIONS=224} [2025-04-14 01:03:26,081 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 81 predicate places. [2025-04-14 01:03:26,081 INFO L485 AbstractCegarLoop]: Abstraction has has 120 places, 224 transitions, 2690 flow [2025-04-14 01:03:26,081 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:03:26,081 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:03:26,081 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:03:26,081 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-04-14 01:03:26,081 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 01:03:26,081 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:03:26,081 INFO L85 PathProgramCache]: Analyzing trace with hash -878985824, now seen corresponding path program 5 times [2025-04-14 01:03:26,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:03:26,082 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754291928] [2025-04-14 01:03:26,082 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 01:03:26,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:03:26,086 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 28 statements into 1 equivalence classes. [2025-04-14 01:03:26,089 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-04-14 01:03:26,089 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-14 01:03:26,089 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:03:26,119 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 01:03:26,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:03:26,119 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754291928] [2025-04-14 01:03:26,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754291928] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:03:26,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:03:26,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-14 01:03:26,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941471409] [2025-04-14 01:03:26,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:03:26,120 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-14 01:03:26,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:03:26,120 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-14 01:03:26,120 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-04-14 01:03:26,120 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 39 [2025-04-14 01:03:26,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 224 transitions, 2690 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:03:26,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:03:26,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 39 [2025-04-14 01:03:26,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:03:34,251 INFO L116 PetriNetUnfolderBase]: 74711/98422 cut-off events. [2025-04-14 01:03:34,251 INFO L117 PetriNetUnfolderBase]: For 1103144/1103144 co-relation queries the response was YES. [2025-04-14 01:03:34,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 581715 conditions, 98422 events. 74711/98422 cut-off events. For 1103144/1103144 co-relation queries the response was YES. Maximal size of possible extension queue 2410. Compared 566649 event pairs, 32041 based on Foata normal form. 512/98152 useless extension candidates. Maximal degree in co-relation 581670. Up to 88678 conditions per place. [2025-04-14 01:03:35,325 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 350 selfloop transitions, 20 changer transitions 2/372 dead transitions. [2025-04-14 01:03:35,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 372 transitions, 4915 flow [2025-04-14 01:03:35,326 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-14 01:03:35,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-14 01:03:35,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 107 transitions. [2025-04-14 01:03:35,326 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5487179487179488 [2025-04-14 01:03:35,326 INFO L175 Difference]: Start difference. First operand has 120 places, 224 transitions, 2690 flow. Second operand 5 states and 107 transitions. [2025-04-14 01:03:35,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 372 transitions, 4915 flow [2025-04-14 01:03:39,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 372 transitions, 4883 flow, removed 5 selfloop flow, removed 3 redundant places. [2025-04-14 01:03:39,481 INFO L231 Difference]: Finished difference. Result has 120 places, 226 transitions, 2730 flow [2025-04-14 01:03:39,481 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2666, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2730, PETRI_PLACES=120, PETRI_TRANSITIONS=226} [2025-04-14 01:03:39,481 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 81 predicate places. [2025-04-14 01:03:39,481 INFO L485 AbstractCegarLoop]: Abstraction has has 120 places, 226 transitions, 2730 flow [2025-04-14 01:03:39,482 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:03:39,482 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:03:39,482 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:03:39,482 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-04-14 01:03:39,482 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 01:03:39,482 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:03:39,482 INFO L85 PathProgramCache]: Analyzing trace with hash -100361122, now seen corresponding path program 3 times [2025-04-14 01:03:39,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:03:39,482 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487982760] [2025-04-14 01:03:39,482 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 01:03:39,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:03:39,487 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 28 statements into 1 equivalence classes. [2025-04-14 01:03:39,490 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-04-14 01:03:39,491 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-14 01:03:39,491 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:03:39,527 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 01:03:39,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:03:39,527 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487982760] [2025-04-14 01:03:39,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487982760] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:03:39,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:03:39,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-14 01:03:39,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151536304] [2025-04-14 01:03:39,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:03:39,527 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-14 01:03:39,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:03:39,528 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-14 01:03:39,528 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-14 01:03:39,528 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 39 [2025-04-14 01:03:39,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 226 transitions, 2730 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:03:39,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:03:39,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 39 [2025-04-14 01:03:39,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:03:47,456 INFO L116 PetriNetUnfolderBase]: 75134/99066 cut-off events. [2025-04-14 01:03:47,456 INFO L117 PetriNetUnfolderBase]: For 1070191/1070191 co-relation queries the response was YES. [2025-04-14 01:03:48,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 579645 conditions, 99066 events. 75134/99066 cut-off events. For 1070191/1070191 co-relation queries the response was YES. Maximal size of possible extension queue 2436. Compared 571482 event pairs, 33477 based on Foata normal form. 200/98484 useless extension candidates. Maximal degree in co-relation 579601. Up to 88734 conditions per place. [2025-04-14 01:03:48,396 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 314 selfloop transitions, 14 changer transitions 30/358 dead transitions. [2025-04-14 01:03:48,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 358 transitions, 4917 flow [2025-04-14 01:03:48,396 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-14 01:03:48,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-14 01:03:48,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 101 transitions. [2025-04-14 01:03:48,397 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.517948717948718 [2025-04-14 01:03:48,397 INFO L175 Difference]: Start difference. First operand has 120 places, 226 transitions, 2730 flow. Second operand 5 states and 101 transitions. [2025-04-14 01:03:48,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 358 transitions, 4917 flow [2025-04-14 01:03:51,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 358 transitions, 4881 flow, removed 11 selfloop flow, removed 1 redundant places. [2025-04-14 01:03:51,194 INFO L231 Difference]: Finished difference. Result has 124 places, 223 transitions, 2695 flow [2025-04-14 01:03:51,194 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2702, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2695, PETRI_PLACES=124, PETRI_TRANSITIONS=223} [2025-04-14 01:03:51,195 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 85 predicate places. [2025-04-14 01:03:51,195 INFO L485 AbstractCegarLoop]: Abstraction has has 124 places, 223 transitions, 2695 flow [2025-04-14 01:03:51,195 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:03:51,195 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:03:51,195 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:03:51,195 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-04-14 01:03:51,195 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 01:03:51,195 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:03:51,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1784672064, now seen corresponding path program 4 times [2025-04-14 01:03:51,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:03:51,195 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522489637] [2025-04-14 01:03:51,195 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 01:03:51,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:03:51,199 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 28 statements into 2 equivalence classes. [2025-04-14 01:03:51,201 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 27 of 28 statements. [2025-04-14 01:03:51,201 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-04-14 01:03:51,201 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:03:51,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:03:51,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:03:51,225 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522489637] [2025-04-14 01:03:51,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522489637] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:03:51,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:03:51,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-14 01:03:51,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321367049] [2025-04-14 01:03:51,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:03:51,225 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-14 01:03:51,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:03:51,225 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-14 01:03:51,226 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-14 01:03:51,226 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 39 [2025-04-14 01:03:51,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 223 transitions, 2695 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:03:51,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:03:51,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 39 [2025-04-14 01:03:51,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:03:59,446 INFO L116 PetriNetUnfolderBase]: 74093/97804 cut-off events. [2025-04-14 01:03:59,446 INFO L117 PetriNetUnfolderBase]: For 1120750/1120750 co-relation queries the response was YES. [2025-04-14 01:04:00,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 579965 conditions, 97804 events. 74093/97804 cut-off events. For 1120750/1120750 co-relation queries the response was YES. Maximal size of possible extension queue 2409. Compared 566658 event pairs, 18169 based on Foata normal form. 474/97496 useless extension candidates. Maximal degree in co-relation 579920. Up to 64483 conditions per place. [2025-04-14 01:04:00,583 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 495 selfloop transitions, 15 changer transitions 10/520 dead transitions. [2025-04-14 01:04:00,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 520 transitions, 7399 flow [2025-04-14 01:04:00,583 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-14 01:04:00,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-14 01:04:00,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 100 transitions. [2025-04-14 01:04:00,584 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5128205128205128 [2025-04-14 01:04:00,584 INFO L175 Difference]: Start difference. First operand has 124 places, 223 transitions, 2695 flow. Second operand 5 states and 100 transitions. [2025-04-14 01:04:00,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 520 transitions, 7399 flow [2025-04-14 01:04:04,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 520 transitions, 7347 flow, removed 4 selfloop flow, removed 4 redundant places. [2025-04-14 01:04:04,375 INFO L231 Difference]: Finished difference. Result has 126 places, 231 transitions, 2832 flow [2025-04-14 01:04:04,375 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2663, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2832, PETRI_PLACES=126, PETRI_TRANSITIONS=231} [2025-04-14 01:04:04,375 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 87 predicate places. [2025-04-14 01:04:04,375 INFO L485 AbstractCegarLoop]: Abstraction has has 126 places, 231 transitions, 2832 flow [2025-04-14 01:04:04,375 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:04:04,376 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:04:04,376 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:04:04,376 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-04-14 01:04:04,376 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 01:04:04,376 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:04:04,376 INFO L85 PathProgramCache]: Analyzing trace with hash 581880368, now seen corresponding path program 5 times [2025-04-14 01:04:04,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:04:04,376 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365752817] [2025-04-14 01:04:04,376 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 01:04:04,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:04:04,386 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-04-14 01:04:04,389 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-04-14 01:04:04,389 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:04:04,389 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:04:04,416 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:04:04,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:04:04,416 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365752817] [2025-04-14 01:04:04,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365752817] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:04:04,416 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466967323] [2025-04-14 01:04:04,416 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 01:04:04,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:04:04,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:04:04,420 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:04:04,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-04-14 01:04:04,457 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-04-14 01:04:04,473 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-04-14 01:04:04,473 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:04:04,473 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:04:04,474 INFO L256 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-04-14 01:04:04,475 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:04:04,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:04:04,491 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:04:04,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:04:04,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466967323] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 01:04:04,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 01:04:04,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2025-04-14 01:04:04,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456238300] [2025-04-14 01:04:04,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 01:04:04,507 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-14 01:04:04,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:04:04,507 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-14 01:04:04,507 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-04-14 01:04:04,507 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 39 [2025-04-14 01:04:04,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 231 transitions, 2832 flow. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 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 01:04:04,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:04:04,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 39 [2025-04-14 01:04:04,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:04:16,535 INFO L116 PetriNetUnfolderBase]: 104995/138587 cut-off events. [2025-04-14 01:04:16,535 INFO L117 PetriNetUnfolderBase]: For 1675417/1675417 co-relation queries the response was YES. [2025-04-14 01:04:17,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 843848 conditions, 138587 events. 104995/138587 cut-off events. For 1675417/1675417 co-relation queries the response was YES. Maximal size of possible extension queue 3445. Compared 836490 event pairs, 13009 based on Foata normal form. 3608/142195 useless extension candidates. Maximal degree in co-relation 843801. Up to 53859 conditions per place. [2025-04-14 01:04:17,917 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 781 selfloop transitions, 27 changer transitions 23/831 dead transitions. [2025-04-14 01:04:17,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 831 transitions, 12380 flow [2025-04-14 01:04:17,918 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-14 01:04:17,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-14 01:04:17,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2025-04-14 01:04:17,918 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5384615384615384 [2025-04-14 01:04:17,919 INFO L175 Difference]: Start difference. First operand has 126 places, 231 transitions, 2832 flow. Second operand 7 states and 147 transitions. [2025-04-14 01:04:17,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 831 transitions, 12380 flow [2025-04-14 01:04:27,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 831 transitions, 12293 flow, removed 36 selfloop flow, removed 1 redundant places. [2025-04-14 01:04:27,787 INFO L231 Difference]: Finished difference. Result has 136 places, 243 transitions, 3015 flow [2025-04-14 01:04:27,787 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2799, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3015, PETRI_PLACES=136, PETRI_TRANSITIONS=243} [2025-04-14 01:04:27,788 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 97 predicate places. [2025-04-14 01:04:27,788 INFO L485 AbstractCegarLoop]: Abstraction has has 136 places, 243 transitions, 3015 flow [2025-04-14 01:04:27,788 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 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 01:04:27,788 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:04:27,788 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:04:27,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-04-14 01:04:27,988 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-04-14 01:04:27,988 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 01:04:27,989 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:04:27,989 INFO L85 PathProgramCache]: Analyzing trace with hash -731468354, now seen corresponding path program 6 times [2025-04-14 01:04:27,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:04:27,989 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735457437] [2025-04-14 01:04:27,989 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-14 01:04:27,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:04:27,993 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 28 statements into 2 equivalence classes. [2025-04-14 01:04:27,997 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-04-14 01:04:27,997 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-14 01:04:27,997 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:04:28,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:04:28,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:04:28,039 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735457437] [2025-04-14 01:04:28,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735457437] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:04:28,039 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653632973] [2025-04-14 01:04:28,039 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-14 01:04:28,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:04:28,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:04:28,041 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:04:28,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-04-14 01:04:28,074 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 28 statements into 2 equivalence classes. [2025-04-14 01:04:28,089 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-04-14 01:04:28,089 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-14 01:04:28,090 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:04:28,090 INFO L256 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-04-14 01:04:28,091 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:04:28,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:04:28,144 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:04:28,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:04:28,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653632973] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 01:04:28,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 01:04:28,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2025-04-14 01:04:28,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975395900] [2025-04-14 01:04:28,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 01:04:28,178 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-04-14 01:04:28,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:04:28,178 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-04-14 01:04:28,178 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-04-14 01:04:28,178 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 39 [2025-04-14 01:04:28,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 243 transitions, 3015 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:04:28,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:04:28,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 39 [2025-04-14 01:04:28,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:04:41,674 INFO L116 PetriNetUnfolderBase]: 110922/146384 cut-off events. [2025-04-14 01:04:41,674 INFO L117 PetriNetUnfolderBase]: For 2064946/2064946 co-relation queries the response was YES. [2025-04-14 01:04:42,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 950370 conditions, 146384 events. 110922/146384 cut-off events. For 2064946/2064946 co-relation queries the response was YES. Maximal size of possible extension queue 3610. Compared 888174 event pairs, 20627 based on Foata normal form. 2146/148530 useless extension candidates. Maximal degree in co-relation 950318. Up to 64965 conditions per place. [2025-04-14 01:04:43,313 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 741 selfloop transitions, 45 changer transitions 19/805 dead transitions. [2025-04-14 01:04:43,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 805 transitions, 11584 flow [2025-04-14 01:04:43,314 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-14 01:04:43,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-04-14 01:04:43,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 201 transitions. [2025-04-14 01:04:43,315 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5153846153846153 [2025-04-14 01:04:43,315 INFO L175 Difference]: Start difference. First operand has 136 places, 243 transitions, 3015 flow. Second operand 10 states and 201 transitions. [2025-04-14 01:04:43,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 805 transitions, 11584 flow [2025-04-14 01:05:13,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 805 transitions, 11544 flow, removed 16 selfloop flow, removed 1 redundant places. [2025-04-14 01:05:13,502 INFO L231 Difference]: Finished difference. Result has 147 places, 259 transitions, 3323 flow [2025-04-14 01:05:13,502 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2983, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3323, PETRI_PLACES=147, PETRI_TRANSITIONS=259} [2025-04-14 01:05:13,503 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 108 predicate places. [2025-04-14 01:05:13,503 INFO L485 AbstractCegarLoop]: Abstraction has has 147 places, 259 transitions, 3323 flow [2025-04-14 01:05:13,503 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:05:13,503 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:05:13,503 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:05:13,509 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-04-14 01:05:13,703 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:05:13,704 INFO L403 AbstractCegarLoop]: === Iteration 20 === 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 01:05:13,704 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:05:13,704 INFO L85 PathProgramCache]: Analyzing trace with hash 986109714, now seen corresponding path program 7 times [2025-04-14 01:05:13,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:05:13,704 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654975948] [2025-04-14 01:05:13,704 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-14 01:05:13,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:05:13,707 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-04-14 01:05:13,710 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-04-14 01:05:13,710 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:05:13,710 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:05:13,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:05:13,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:05:13,741 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654975948] [2025-04-14 01:05:13,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654975948] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:05:13,741 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876110637] [2025-04-14 01:05:13,741 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-14 01:05:13,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:05:13,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:05:13,743 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:05:13,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-04-14 01:05:13,776 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-04-14 01:05:13,788 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-04-14 01:05:13,788 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:05:13,788 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:05:13,789 INFO L256 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-04-14 01:05:13,790 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:05:13,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:05:13,822 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:05:13,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:05:13,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876110637] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 01:05:13,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 01:05:13,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2025-04-14 01:05:13,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988015369] [2025-04-14 01:05:13,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 01:05:13,844 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-04-14 01:05:13,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:05:13,844 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-04-14 01:05:13,844 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2025-04-14 01:05:13,845 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 39 [2025-04-14 01:05:13,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 259 transitions, 3323 flow. Second operand has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 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 01:05:13,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:05:13,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 39 [2025-04-14 01:05:13,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:05:32,545 INFO L116 PetriNetUnfolderBase]: 148119/194299 cut-off events. [2025-04-14 01:05:32,545 INFO L117 PetriNetUnfolderBase]: For 2613833/2613833 co-relation queries the response was YES. [2025-04-14 01:05:34,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1255636 conditions, 194299 events. 148119/194299 cut-off events. For 2613833/2613833 co-relation queries the response was YES. Maximal size of possible extension queue 4600. Compared 1181599 event pairs, 20928 based on Foata normal form. 3814/198113 useless extension candidates. Maximal degree in co-relation 1255581. Up to 58693 conditions per place. [2025-04-14 01:05:34,707 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 978 selfloop transitions, 63 changer transitions 8/1049 dead transitions. [2025-04-14 01:05:34,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 1049 transitions, 16002 flow [2025-04-14 01:05:34,707 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-14 01:05:34,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-04-14 01:05:34,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 163 transitions. [2025-04-14 01:05:34,708 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5224358974358975 [2025-04-14 01:05:34,708 INFO L175 Difference]: Start difference. First operand has 147 places, 259 transitions, 3323 flow. Second operand 8 states and 163 transitions. [2025-04-14 01:05:34,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 1049 transitions, 16002 flow [2025-04-14 01:05:55,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 1049 transitions, 15886 flow, removed 18 selfloop flow, removed 2 redundant places. [2025-04-14 01:05:55,865 INFO L231 Difference]: Finished difference. Result has 157 places, 293 transitions, 3863 flow [2025-04-14 01:05:55,865 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3270, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3863, PETRI_PLACES=157, PETRI_TRANSITIONS=293} [2025-04-14 01:05:55,865 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 118 predicate places. [2025-04-14 01:05:55,865 INFO L485 AbstractCegarLoop]: Abstraction has has 157 places, 293 transitions, 3863 flow [2025-04-14 01:05:55,866 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 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 01:05:55,866 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:05:55,866 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:05:55,873 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-04-14 01:05:56,067 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:05:56,067 INFO L403 AbstractCegarLoop]: === Iteration 21 === 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 01:05:56,067 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:05:56,068 INFO L85 PathProgramCache]: Analyzing trace with hash 969982902, now seen corresponding path program 8 times [2025-04-14 01:05:56,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:05:56,068 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846034765] [2025-04-14 01:05:56,068 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 01:05:56,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:05:56,071 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-04-14 01:05:56,074 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-04-14 01:05:56,074 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:05:56,074 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:05:56,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:05:56,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:05:56,109 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846034765] [2025-04-14 01:05:56,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846034765] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:05:56,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:05:56,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-14 01:05:56,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031146067] [2025-04-14 01:05:56,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:05:56,109 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-14 01:05:56,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:05:56,110 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-14 01:05:56,110 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-04-14 01:05:56,110 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 39 [2025-04-14 01:05:56,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 293 transitions, 3863 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:05:56,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:05:56,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 39 [2025-04-14 01:05:56,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand