/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -tc ../benchexec/../../../trunk/examples/toolchains/AutomizerCInline_IcfgBuilder.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis PETRI_NET --preprocessor.replace.while.statements.and.if-then-else.statements false -i ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-14 01:13:32,972 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-14 01:13:33,008 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2025-04-14 01:13:33,019 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-14 01:13:33,019 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-14 01:13:33,044 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-14 01:13:33,044 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-14 01:13:33,045 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-14 01:13:33,045 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-14 01:13:33,045 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-14 01:13:33,045 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-14 01:13:33,045 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-14 01:13:33,045 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-14 01:13:33,045 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-14 01:13:33,045 INFO L153 SettingsManager]: * Use SBE=true [2025-04-14 01:13:33,045 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-14 01:13:33,046 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-14 01:13:33,046 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-14 01:13:33,047 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-14 01:13:33,047 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-14 01:13:33,047 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-14 01:13:33,047 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-14 01:13:33,047 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-14 01:13:33,047 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-14 01:13:33,047 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-14 01:13:33,047 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-14 01:13:33,047 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-14 01:13:33,047 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-14 01:13:33,047 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-14 01:13:33,047 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 01:13:33,048 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 01:13:33,048 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 01:13:33,048 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 01:13:33,048 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-14 01:13:33,048 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 01:13:33,048 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 01:13:33,048 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 01:13:33,048 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 01:13:33,048 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-14 01:13:33,048 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-14 01:13:33,048 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-14 01:13:33,048 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-14 01:13:33,048 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-14 01:13:33,048 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-14 01:13:33,049 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-14 01:13:33,049 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-14 01:13:33,049 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-14 01:13:33,049 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Automaton type used in concurrency analysis -> PETRI_NET Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Replace while statements and if-then-else statements -> false [2025-04-14 01:13:33,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-14 01:13:33,268 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-14 01:13:33,269 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-14 01:13:33,271 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-14 01:13:33,273 INFO L274 PluginConnector]: CDTParser initialized [2025-04-14 01:13:33,275 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c [2025-04-14 01:13:34,564 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be08a43ab/af0168cfe8ef4dc3ad1717e0e3be1871/FLAG65f898e9c [2025-04-14 01:13:34,803 INFO L389 CDTParser]: Found 1 translation units. [2025-04-14 01:13:34,803 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c [2025-04-14 01:13:34,812 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be08a43ab/af0168cfe8ef4dc3ad1717e0e3be1871/FLAG65f898e9c [2025-04-14 01:13:35,614 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be08a43ab/af0168cfe8ef4dc3ad1717e0e3be1871 [2025-04-14 01:13:35,616 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-14 01:13:35,617 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-14 01:13:35,618 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-14 01:13:35,618 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-14 01:13:35,625 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-14 01:13:35,626 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 01:13:35" (1/1) ... [2025-04-14 01:13:35,627 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28e30345 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:13:35, skipping insertion in model container [2025-04-14 01:13:35,627 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 01:13:35" (1/1) ... [2025-04-14 01:13:35,640 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-14 01:13:35,840 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c[4270,4283] [2025-04-14 01:13:35,855 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 01:13:35,866 INFO L200 MainTranslator]: Completed pre-run [2025-04-14 01:13:35,909 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult.wvr.c[4270,4283] [2025-04-14 01:13:35,917 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 01:13:35,931 INFO L204 MainTranslator]: Completed translation [2025-04-14 01:13:35,932 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:13:35 WrapperNode [2025-04-14 01:13:35,932 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-14 01:13:35,933 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-14 01:13:35,933 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-14 01:13:35,933 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-14 01:13:35,938 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:13:35" (1/1) ... [2025-04-14 01:13:35,954 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:13:35" (1/1) ... [2025-04-14 01:13:35,979 INFO L138 Inliner]: procedures = 26, calls = 60, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 278 [2025-04-14 01:13:35,979 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-14 01:13:35,982 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-14 01:13:35,982 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-14 01:13:35,982 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-14 01:13:35,987 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:13:35" (1/1) ... [2025-04-14 01:13:35,988 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:13:35" (1/1) ... [2025-04-14 01:13:35,990 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:13:35" (1/1) ... [2025-04-14 01:13:36,008 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2025-04-14 01:13:36,009 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:13:35" (1/1) ... [2025-04-14 01:13:36,009 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:13:35" (1/1) ... [2025-04-14 01:13:36,014 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:13:35" (1/1) ... [2025-04-14 01:13:36,015 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:13:35" (1/1) ... [2025-04-14 01:13:36,016 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:13:35" (1/1) ... [2025-04-14 01:13:36,017 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:13:35" (1/1) ... [2025-04-14 01:13:36,021 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-14 01:13:36,023 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-14 01:13:36,023 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-14 01:13:36,023 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-14 01:13:36,024 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:13:35" (1/1) ... [2025-04-14 01:13:36,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 01:13:36,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:13:36,048 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-14 01:13:36,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-14 01:13:36,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-14 01:13:36,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-14 01:13:36,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-04-14 01:13:36,069 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-14 01:13:36,069 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-04-14 01:13:36,069 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-14 01:13:36,069 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-14 01:13:36,069 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-14 01:13:36,069 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-14 01:13:36,069 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-14 01:13:36,069 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-14 01:13:36,069 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-04-14 01:13:36,069 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-04-14 01:13:36,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-14 01:13:36,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-14 01:13:36,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-14 01:13:36,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-14 01:13:36,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-14 01:13:36,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-14 01:13:36,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-14 01:13:36,071 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-14 01:13:36,149 INFO L256 CfgBuilder]: Building ICFG [2025-04-14 01:13:36,150 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-14 01:13:36,500 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-14 01:13:36,501 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-14 01:13:36,501 INFO L318 CfgBuilder]: Performing block encoding [2025-04-14 01:13:36,832 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-14 01:13:36,833 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 01:13:36 BoogieIcfgContainer [2025-04-14 01:13:36,833 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-14 01:13:36,834 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-14 01:13:36,835 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-14 01:13:36,837 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-14 01:13:36,838 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.04 01:13:35" (1/3) ... [2025-04-14 01:13:36,838 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ae87d44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 01:13:36, skipping insertion in model container [2025-04-14 01:13:36,838 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:13:35" (2/3) ... [2025-04-14 01:13:36,838 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ae87d44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 01:13:36, skipping insertion in model container [2025-04-14 01:13:36,838 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 01:13:36" (3/3) ... [2025-04-14 01:13:36,839 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult.wvr.c [2025-04-14 01:13:36,849 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-14 01:13:36,851 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-buffer-mult.wvr.c that has 5 procedures, 44 locations, 45 edges, 1 initial locations, 6 loop locations, and 1 error locations. [2025-04-14 01:13:36,852 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-14 01:13:36,906 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-04-14 01:13:36,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 49 transitions, 126 flow [2025-04-14 01:13:36,963 INFO L116 PetriNetUnfolderBase]: 6/45 cut-off events. [2025-04-14 01:13:36,964 INFO L117 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-04-14 01:13:36,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 45 events. 6/45 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 87 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2025-04-14 01:13:36,967 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 49 transitions, 126 flow [2025-04-14 01:13:36,971 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 44 transitions, 112 flow [2025-04-14 01:13:36,979 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-14 01:13:36,988 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;@7b2031eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-14 01:13:36,988 INFO L341 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-04-14 01:13:37,000 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-14 01:13:37,001 INFO L116 PetriNetUnfolderBase]: 6/43 cut-off events. [2025-04-14 01:13:37,001 INFO L117 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-04-14 01:13:37,001 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:13:37,001 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:13:37,002 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 01:13:37,005 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:13:37,006 INFO L85 PathProgramCache]: Analyzing trace with hash -831930433, now seen corresponding path program 1 times [2025-04-14 01:13:37,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:13:37,011 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073382351] [2025-04-14 01:13:37,011 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:13:37,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:13:37,069 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-04-14 01:13:37,115 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-04-14 01:13:37,116 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:13:37,116 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:13:37,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:13:37,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:13:37,288 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073382351] [2025-04-14 01:13:37,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073382351] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:13:37,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:13:37,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-04-14 01:13:37,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172331277] [2025-04-14 01:13:37,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:13:37,296 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-14 01:13:37,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:13:37,314 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-14 01:13:37,314 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-14 01:13:37,315 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2025-04-14 01:13:37,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:13:37,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:13:37,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2025-04-14 01:13:37,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:13:38,100 INFO L116 PetriNetUnfolderBase]: 5628/7731 cut-off events. [2025-04-14 01:13:38,100 INFO L117 PetriNetUnfolderBase]: For 510/510 co-relation queries the response was YES. [2025-04-14 01:13:38,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15597 conditions, 7731 events. 5628/7731 cut-off events. For 510/510 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 38979 event pairs, 1634 based on Foata normal form. 1/7561 useless extension candidates. Maximal degree in co-relation 14262. Up to 4718 conditions per place. [2025-04-14 01:13:38,148 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 55 selfloop transitions, 3 changer transitions 1/67 dead transitions. [2025-04-14 01:13:38,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 67 transitions, 291 flow [2025-04-14 01:13:38,150 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-14 01:13:38,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-14 01:13:38,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2025-04-14 01:13:38,160 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6530612244897959 [2025-04-14 01:13:38,161 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 112 flow. Second operand 3 states and 96 transitions. [2025-04-14 01:13:38,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 67 transitions, 291 flow [2025-04-14 01:13:38,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 67 transitions, 265 flow, removed 0 selfloop flow, removed 8 redundant places. [2025-04-14 01:13:38,178 INFO L231 Difference]: Finished difference. Result has 46 places, 46 transitions, 115 flow [2025-04-14 01:13:38,180 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=115, PETRI_PLACES=46, PETRI_TRANSITIONS=46} [2025-04-14 01:13:38,183 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, -5 predicate places. [2025-04-14 01:13:38,184 INFO L485 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 115 flow [2025-04-14 01:13:38,185 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:13:38,185 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:13:38,185 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:13:38,185 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-14 01:13:38,186 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 01:13:38,186 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:13:38,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1540711415, now seen corresponding path program 1 times [2025-04-14 01:13:38,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:13:38,186 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769539508] [2025-04-14 01:13:38,186 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:13:38,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:13:38,203 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-04-14 01:13:38,222 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-04-14 01:13:38,222 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:13:38,222 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:13:38,356 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 01:13:38,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:13:38,357 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769539508] [2025-04-14 01:13:38,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769539508] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:13:38,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:13:38,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-14 01:13:38,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419974367] [2025-04-14 01:13:38,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:13:38,358 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-14 01:13:38,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:13:38,358 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-14 01:13:38,358 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-14 01:13:38,358 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2025-04-14 01:13:38,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 46 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:13:38,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:13:38,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2025-04-14 01:13:38,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:13:38,991 INFO L116 PetriNetUnfolderBase]: 6878/9585 cut-off events. [2025-04-14 01:13:38,992 INFO L117 PetriNetUnfolderBase]: For 1255/1255 co-relation queries the response was YES. [2025-04-14 01:13:39,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20236 conditions, 9585 events. 6878/9585 cut-off events. For 1255/1255 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 51856 event pairs, 2262 based on Foata normal form. 231/9725 useless extension candidates. Maximal degree in co-relation 7916. Up to 6208 conditions per place. [2025-04-14 01:13:39,035 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 62 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2025-04-14 01:13:39,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 72 transitions, 309 flow [2025-04-14 01:13:39,037 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-14 01:13:39,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-14 01:13:39,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2025-04-14 01:13:39,037 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-04-14 01:13:39,037 INFO L175 Difference]: Start difference. First operand has 46 places, 46 transitions, 115 flow. Second operand 3 states and 98 transitions. [2025-04-14 01:13:39,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 72 transitions, 309 flow [2025-04-14 01:13:39,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 72 transitions, 305 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-14 01:13:39,039 INFO L231 Difference]: Finished difference. Result has 48 places, 47 transitions, 126 flow [2025-04-14 01:13:39,039 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=48, PETRI_TRANSITIONS=47} [2025-04-14 01:13:39,039 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, -3 predicate places. [2025-04-14 01:13:39,039 INFO L485 AbstractCegarLoop]: Abstraction has has 48 places, 47 transitions, 126 flow [2025-04-14 01:13:39,039 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:13:39,039 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:13:39,040 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:13:39,040 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-14 01:13:39,040 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 01:13:39,040 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:13:39,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1539893365, now seen corresponding path program 1 times [2025-04-14 01:13:39,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:13:39,040 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546693965] [2025-04-14 01:13:39,040 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:13:39,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:13:39,056 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-04-14 01:13:39,066 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-04-14 01:13:39,067 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:13:39,067 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:13:39,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:13:39,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:13:39,163 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546693965] [2025-04-14 01:13:39,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546693965] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:13:39,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:13:39,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-14 01:13:39,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041576458] [2025-04-14 01:13:39,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:13:39,163 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-14 01:13:39,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:13:39,164 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-14 01:13:39,164 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-14 01:13:39,164 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2025-04-14 01:13:39,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 47 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:13:39,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:13:39,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2025-04-14 01:13:39,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:13:39,961 INFO L116 PetriNetUnfolderBase]: 8266/11675 cut-off events. [2025-04-14 01:13:39,961 INFO L117 PetriNetUnfolderBase]: For 3115/3115 co-relation queries the response was YES. [2025-04-14 01:13:39,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25387 conditions, 11675 events. 8266/11675 cut-off events. For 3115/3115 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 64871 event pairs, 2562 based on Foata normal form. 162/11755 useless extension candidates. Maximal degree in co-relation 17436. Up to 7562 conditions per place. [2025-04-14 01:13:40,075 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 62 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2025-04-14 01:13:40,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 72 transitions, 325 flow [2025-04-14 01:13:40,076 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-14 01:13:40,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-14 01:13:40,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2025-04-14 01:13:40,077 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6530612244897959 [2025-04-14 01:13:40,077 INFO L175 Difference]: Start difference. First operand has 48 places, 47 transitions, 126 flow. Second operand 3 states and 96 transitions. [2025-04-14 01:13:40,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 72 transitions, 325 flow [2025-04-14 01:13:40,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 72 transitions, 322 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-14 01:13:40,079 INFO L231 Difference]: Finished difference. Result has 50 places, 48 transitions, 138 flow [2025-04-14 01:13:40,079 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=50, PETRI_TRANSITIONS=48} [2025-04-14 01:13:40,081 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, -1 predicate places. [2025-04-14 01:13:40,082 INFO L485 AbstractCegarLoop]: Abstraction has has 50 places, 48 transitions, 138 flow [2025-04-14 01:13:40,082 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:13:40,082 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:13:40,082 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:13:40,082 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-14 01:13:40,082 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 01:13:40,083 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:13:40,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1042400038, now seen corresponding path program 1 times [2025-04-14 01:13:40,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:13:40,083 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334433465] [2025-04-14 01:13:40,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:13:40,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:13:40,094 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-04-14 01:13:40,114 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-04-14 01:13:40,114 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:13:40,114 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:13:40,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:13:40,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:13:40,242 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334433465] [2025-04-14 01:13:40,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334433465] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:13:40,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:13:40,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-14 01:13:40,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611749077] [2025-04-14 01:13:40,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:13:40,243 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-14 01:13:40,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:13:40,243 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-14 01:13:40,243 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-14 01:13:40,243 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2025-04-14 01:13:40,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 48 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:13:40,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:13:40,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2025-04-14 01:13:40,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:13:40,982 INFO L116 PetriNetUnfolderBase]: 10571/15233 cut-off events. [2025-04-14 01:13:40,982 INFO L117 PetriNetUnfolderBase]: For 5594/5594 co-relation queries the response was YES. [2025-04-14 01:13:40,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34141 conditions, 15233 events. 10571/15233 cut-off events. For 5594/5594 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 91935 event pairs, 8770 based on Foata normal form. 255/15367 useless extension candidates. Maximal degree in co-relation 16863. Up to 10988 conditions per place. [2025-04-14 01:13:41,040 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 69 selfloop transitions, 5 changer transitions 0/82 dead transitions. [2025-04-14 01:13:41,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 82 transitions, 377 flow [2025-04-14 01:13:41,040 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-14 01:13:41,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-04-14 01:13:41,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2025-04-14 01:13:41,042 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5265306122448979 [2025-04-14 01:13:41,042 INFO L175 Difference]: Start difference. First operand has 50 places, 48 transitions, 138 flow. Second operand 5 states and 129 transitions. [2025-04-14 01:13:41,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 82 transitions, 377 flow [2025-04-14 01:13:41,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 82 transitions, 374 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-14 01:13:41,046 INFO L231 Difference]: Finished difference. Result has 56 places, 52 transitions, 172 flow [2025-04-14 01:13:41,046 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=172, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2025-04-14 01:13:41,047 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 5 predicate places. [2025-04-14 01:13:41,047 INFO L485 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 172 flow [2025-04-14 01:13:41,047 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:13:41,047 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:13:41,047 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:13:41,047 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-14 01:13:41,047 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 01:13:41,049 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:13:41,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1463255536, now seen corresponding path program 1 times [2025-04-14 01:13:41,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:13:41,049 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487553727] [2025-04-14 01:13:41,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:13:41,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:13:41,058 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-04-14 01:13:41,076 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-04-14 01:13:41,077 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:13:41,077 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:13:41,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:13:41,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:13:41,190 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487553727] [2025-04-14 01:13:41,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487553727] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:13:41,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:13:41,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-14 01:13:41,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195920337] [2025-04-14 01:13:41,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:13:41,191 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-14 01:13:41,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:13:41,192 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-14 01:13:41,192 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-14 01:13:41,192 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2025-04-14 01:13:41,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:13:41,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:13:41,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2025-04-14 01:13:41,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:13:42,143 INFO L116 PetriNetUnfolderBase]: 13578/19770 cut-off events. [2025-04-14 01:13:42,143 INFO L117 PetriNetUnfolderBase]: For 7346/7346 co-relation queries the response was YES. [2025-04-14 01:13:42,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43734 conditions, 19770 events. 13578/19770 cut-off events. For 7346/7346 co-relation queries the response was YES. Maximal size of possible extension queue 709. Compared 126160 event pairs, 11518 based on Foata normal form. 385/19996 useless extension candidates. Maximal degree in co-relation 34596. Up to 14202 conditions per place. [2025-04-14 01:13:42,231 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 68 selfloop transitions, 5 changer transitions 1/82 dead transitions. [2025-04-14 01:13:42,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 82 transitions, 408 flow [2025-04-14 01:13:42,232 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-14 01:13:42,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-04-14 01:13:42,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2025-04-14 01:13:42,233 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.576530612244898 [2025-04-14 01:13:42,233 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 172 flow. Second operand 4 states and 113 transitions. [2025-04-14 01:13:42,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 82 transitions, 408 flow [2025-04-14 01:13:42,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 82 transitions, 402 flow, removed 2 selfloop flow, removed 1 redundant places. [2025-04-14 01:13:42,236 INFO L231 Difference]: Finished difference. Result has 60 places, 53 transitions, 190 flow [2025-04-14 01:13:42,236 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=190, PETRI_PLACES=60, PETRI_TRANSITIONS=53} [2025-04-14 01:13:42,237 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 9 predicate places. [2025-04-14 01:13:42,237 INFO L485 AbstractCegarLoop]: Abstraction has has 60 places, 53 transitions, 190 flow [2025-04-14 01:13:42,237 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:13:42,237 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:13:42,237 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:13:42,237 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-14 01:13:42,237 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 01:13:42,238 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:13:42,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1775231568, now seen corresponding path program 1 times [2025-04-14 01:13:42,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:13:42,238 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821820535] [2025-04-14 01:13:42,238 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:13:42,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:13:42,248 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-04-14 01:13:42,263 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-04-14 01:13:42,263 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:13:42,263 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:13:42,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:13:42,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:13:42,633 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821820535] [2025-04-14 01:13:42,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821820535] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:13:42,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:13:42,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-14 01:13:42,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745699516] [2025-04-14 01:13:42,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:13:42,634 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-14 01:13:42,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:13:42,634 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-14 01:13:42,634 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-04-14 01:13:42,639 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2025-04-14 01:13:42,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 53 transitions, 190 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:13:42,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:13:42,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2025-04-14 01:13:42,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:13:44,228 INFO L116 PetriNetUnfolderBase]: 19484/27330 cut-off events. [2025-04-14 01:13:44,229 INFO L117 PetriNetUnfolderBase]: For 9510/9510 co-relation queries the response was YES. [2025-04-14 01:13:44,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61999 conditions, 27330 events. 19484/27330 cut-off events. For 9510/9510 co-relation queries the response was YES. Maximal size of possible extension queue 990. Compared 172431 event pairs, 1133 based on Foata normal form. 178/26233 useless extension candidates. Maximal degree in co-relation 50192. Up to 19586 conditions per place. [2025-04-14 01:13:44,348 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 118 selfloop transitions, 10 changer transitions 3/138 dead transitions. [2025-04-14 01:13:44,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 138 transitions, 709 flow [2025-04-14 01:13:44,349 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-14 01:13:44,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-14 01:13:44,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 183 transitions. [2025-04-14 01:13:44,350 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6224489795918368 [2025-04-14 01:13:44,350 INFO L175 Difference]: Start difference. First operand has 60 places, 53 transitions, 190 flow. Second operand 6 states and 183 transitions. [2025-04-14 01:13:44,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 138 transitions, 709 flow [2025-04-14 01:13:44,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 138 transitions, 699 flow, removed 3 selfloop flow, removed 1 redundant places. [2025-04-14 01:13:44,359 INFO L231 Difference]: Finished difference. Result has 68 places, 62 transitions, 243 flow [2025-04-14 01:13:44,359 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=243, PETRI_PLACES=68, PETRI_TRANSITIONS=62} [2025-04-14 01:13:44,359 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 17 predicate places. [2025-04-14 01:13:44,360 INFO L485 AbstractCegarLoop]: Abstraction has has 68 places, 62 transitions, 243 flow [2025-04-14 01:13:44,360 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:13:44,360 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:13:44,360 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:13:44,360 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-04-14 01:13:44,360 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 01:13:44,360 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:13:44,360 INFO L85 PathProgramCache]: Analyzing trace with hash -675668789, now seen corresponding path program 1 times [2025-04-14 01:13:44,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:13:44,361 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901382768] [2025-04-14 01:13:44,361 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:13:44,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:13:44,372 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-04-14 01:13:44,396 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-04-14 01:13:44,396 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:13:44,396 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:13:44,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:13:44,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:13:44,646 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901382768] [2025-04-14 01:13:44,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901382768] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:13:44,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:13:44,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-14 01:13:44,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287977793] [2025-04-14 01:13:44,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:13:44,646 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-14 01:13:44,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:13:44,646 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-14 01:13:44,647 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-04-14 01:13:44,650 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2025-04-14 01:13:44,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 62 transitions, 243 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:13:44,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:13:44,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2025-04-14 01:13:44,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:13:46,991 INFO L116 PetriNetUnfolderBase]: 26878/38856 cut-off events. [2025-04-14 01:13:46,991 INFO L117 PetriNetUnfolderBase]: For 21715/21718 co-relation queries the response was YES. [2025-04-14 01:13:47,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98103 conditions, 38856 events. 26878/38856 cut-off events. For 21715/21718 co-relation queries the response was YES. Maximal size of possible extension queue 1508. Compared 264572 event pairs, 2372 based on Foata normal form. 1377/40191 useless extension candidates. Maximal degree in co-relation 80032. Up to 15530 conditions per place. [2025-04-14 01:13:47,170 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 167 selfloop transitions, 40 changer transitions 8/223 dead transitions. [2025-04-14 01:13:47,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 223 transitions, 1251 flow [2025-04-14 01:13:47,170 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-14 01:13:47,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-04-14 01:13:47,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 271 transitions. [2025-04-14 01:13:47,171 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6145124716553289 [2025-04-14 01:13:47,171 INFO L175 Difference]: Start difference. First operand has 68 places, 62 transitions, 243 flow. Second operand 9 states and 271 transitions. [2025-04-14 01:13:47,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 223 transitions, 1251 flow [2025-04-14 01:13:47,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 223 transitions, 1251 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-04-14 01:13:47,183 INFO L231 Difference]: Finished difference. Result has 83 places, 104 transitions, 639 flow [2025-04-14 01:13:47,183 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=639, PETRI_PLACES=83, PETRI_TRANSITIONS=104} [2025-04-14 01:13:47,184 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 32 predicate places. [2025-04-14 01:13:47,184 INFO L485 AbstractCegarLoop]: Abstraction has has 83 places, 104 transitions, 639 flow [2025-04-14 01:13:47,184 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:13:47,185 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:13:47,185 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:13:47,185 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-04-14 01:13:47,185 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 01:13:47,186 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:13:47,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1828241643, now seen corresponding path program 2 times [2025-04-14 01:13:47,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:13:47,186 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152313035] [2025-04-14 01:13:47,186 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 01:13:47,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:13:47,199 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 36 statements into 2 equivalence classes. [2025-04-14 01:13:47,225 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-04-14 01:13:47,225 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:13:47,225 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:13:47,508 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-14 01:13:47,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:13:47,508 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152313035] [2025-04-14 01:13:47,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152313035] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:13:47,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:13:47,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-04-14 01:13:47,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663675579] [2025-04-14 01:13:47,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:13:47,509 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-14 01:13:47,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:13:47,509 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-14 01:13:47,509 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-04-14 01:13:47,517 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2025-04-14 01:13:47,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 104 transitions, 639 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:13:47,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:13:47,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2025-04-14 01:13:47,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:13:50,218 INFO L116 PetriNetUnfolderBase]: 27211/38939 cut-off events. [2025-04-14 01:13:50,218 INFO L117 PetriNetUnfolderBase]: For 58188/58200 co-relation queries the response was YES. [2025-04-14 01:13:50,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126490 conditions, 38939 events. 27211/38939 cut-off events. For 58188/58200 co-relation queries the response was YES. Maximal size of possible extension queue 1451. Compared 262906 event pairs, 2700 based on Foata normal form. 105/38999 useless extension candidates. Maximal degree in co-relation 102913. Up to 27932 conditions per place. [2025-04-14 01:13:50,554 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 133 selfloop transitions, 25 changer transitions 23/189 dead transitions. [2025-04-14 01:13:50,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 189 transitions, 1367 flow [2025-04-14 01:13:50,554 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-14 01:13:50,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-14 01:13:50,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 182 transitions. [2025-04-14 01:13:50,555 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2025-04-14 01:13:50,555 INFO L175 Difference]: Start difference. First operand has 83 places, 104 transitions, 639 flow. Second operand 6 states and 182 transitions. [2025-04-14 01:13:50,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 189 transitions, 1367 flow [2025-04-14 01:13:50,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 189 transitions, 1363 flow, removed 2 selfloop flow, removed 0 redundant places. [2025-04-14 01:13:50,891 INFO L231 Difference]: Finished difference. Result has 91 places, 106 transitions, 725 flow [2025-04-14 01:13:50,891 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=635, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=725, PETRI_PLACES=91, PETRI_TRANSITIONS=106} [2025-04-14 01:13:50,892 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 40 predicate places. [2025-04-14 01:13:50,892 INFO L485 AbstractCegarLoop]: Abstraction has has 91 places, 106 transitions, 725 flow [2025-04-14 01:13:50,892 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:13:50,892 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:13:50,892 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:13:50,892 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-04-14 01:13:50,892 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 01:13:50,892 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:13:50,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1643386309, now seen corresponding path program 3 times [2025-04-14 01:13:50,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:13:50,893 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230236764] [2025-04-14 01:13:50,893 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 01:13:50,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:13:50,901 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 36 statements into 2 equivalence classes. [2025-04-14 01:13:50,910 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 35 of 36 statements. [2025-04-14 01:13:50,910 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-14 01:13:50,910 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:13:51,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:13:51,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:13:51,176 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230236764] [2025-04-14 01:13:51,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230236764] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:13:51,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:13:51,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-14 01:13:51,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281381365] [2025-04-14 01:13:51,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:13:51,177 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-14 01:13:51,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:13:51,177 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-14 01:13:51,177 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-04-14 01:13:51,184 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2025-04-14 01:13:51,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 106 transitions, 725 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:13:51,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:13:51,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2025-04-14 01:13:51,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:13:55,102 INFO L116 PetriNetUnfolderBase]: 35579/51193 cut-off events. [2025-04-14 01:13:55,103 INFO L117 PetriNetUnfolderBase]: For 94837/94849 co-relation queries the response was YES. [2025-04-14 01:13:55,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173077 conditions, 51193 events. 35579/51193 cut-off events. For 94837/94849 co-relation queries the response was YES. Maximal size of possible extension queue 1950. Compared 359648 event pairs, 3542 based on Foata normal form. 1381/52535 useless extension candidates. Maximal degree in co-relation 139618. Up to 29602 conditions per place. [2025-04-14 01:13:55,442 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 190 selfloop transitions, 57 changer transitions 8/263 dead transitions. [2025-04-14 01:13:55,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 263 transitions, 2064 flow [2025-04-14 01:13:55,443 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-14 01:13:55,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-04-14 01:13:55,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 269 transitions. [2025-04-14 01:13:55,444 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6099773242630385 [2025-04-14 01:13:55,444 INFO L175 Difference]: Start difference. First operand has 91 places, 106 transitions, 725 flow. Second operand 9 states and 269 transitions. [2025-04-14 01:13:55,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 263 transitions, 2064 flow [2025-04-14 01:13:56,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 263 transitions, 2012 flow, removed 2 selfloop flow, removed 3 redundant places. [2025-04-14 01:13:56,340 INFO L231 Difference]: Finished difference. Result has 101 places, 140 transitions, 1219 flow [2025-04-14 01:13:56,340 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=696, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1219, PETRI_PLACES=101, PETRI_TRANSITIONS=140} [2025-04-14 01:13:56,341 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 50 predicate places. [2025-04-14 01:13:56,341 INFO L485 AbstractCegarLoop]: Abstraction has has 101 places, 140 transitions, 1219 flow [2025-04-14 01:13:56,341 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:13:56,341 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:13:56,341 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:13:56,341 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-04-14 01:13:56,341 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 01:13:56,342 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:13:56,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1941226231, now seen corresponding path program 4 times [2025-04-14 01:13:56,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:13:56,342 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946943398] [2025-04-14 01:13:56,342 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 01:13:56,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:13:56,350 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 36 statements into 2 equivalence classes. [2025-04-14 01:13:56,360 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-04-14 01:13:56,360 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-14 01:13:56,360 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:13:56,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:13:56,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:13:56,564 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946943398] [2025-04-14 01:13:56,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946943398] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:13:56,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:13:56,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-04-14 01:13:56,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104084572] [2025-04-14 01:13:56,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:13:56,564 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-14 01:13:56,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:13:56,564 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-14 01:13:56,564 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-04-14 01:13:56,566 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2025-04-14 01:13:56,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 140 transitions, 1219 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:13:56,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:13:56,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2025-04-14 01:13:56,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:14:02,495 INFO L116 PetriNetUnfolderBase]: 53067/74613 cut-off events. [2025-04-14 01:14:02,495 INFO L117 PetriNetUnfolderBase]: For 272031/272452 co-relation queries the response was YES. [2025-04-14 01:14:02,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292398 conditions, 74613 events. 53067/74613 cut-off events. For 272031/272452 co-relation queries the response was YES. Maximal size of possible extension queue 2826. Compared 518990 event pairs, 8541 based on Foata normal form. 32/71139 useless extension candidates. Maximal degree in co-relation 239775. Up to 34952 conditions per place. [2025-04-14 01:14:03,265 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 435 selfloop transitions, 75 changer transitions 3/524 dead transitions. [2025-04-14 01:14:03,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 524 transitions, 5861 flow [2025-04-14 01:14:03,266 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-14 01:14:03,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-04-14 01:14:03,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 257 transitions. [2025-04-14 01:14:03,267 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5827664399092971 [2025-04-14 01:14:03,267 INFO L175 Difference]: Start difference. First operand has 101 places, 140 transitions, 1219 flow. Second operand 9 states and 257 transitions. [2025-04-14 01:14:03,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 524 transitions, 5861 flow [2025-04-14 01:14:04,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 524 transitions, 5758 flow, removed 45 selfloop flow, removed 1 redundant places. [2025-04-14 01:14:04,794 INFO L231 Difference]: Finished difference. Result has 114 places, 215 transitions, 2406 flow [2025-04-14 01:14:04,794 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1190, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2406, PETRI_PLACES=114, PETRI_TRANSITIONS=215} [2025-04-14 01:14:04,794 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 63 predicate places. [2025-04-14 01:14:04,794 INFO L485 AbstractCegarLoop]: Abstraction has has 114 places, 215 transitions, 2406 flow [2025-04-14 01:14:04,794 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:14:04,795 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:14:04,795 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:14:04,795 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-04-14 01:14:04,795 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 01:14:04,795 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:14:04,795 INFO L85 PathProgramCache]: Analyzing trace with hash -547878759, now seen corresponding path program 5 times [2025-04-14 01:14:04,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:14:04,795 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644730278] [2025-04-14 01:14:04,795 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 01:14:04,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:14:04,805 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 36 statements into 2 equivalence classes. [2025-04-14 01:14:04,819 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-04-14 01:14:04,819 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:14:04,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:14:05,083 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-14 01:14:05,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:14:05,083 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644730278] [2025-04-14 01:14:05,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644730278] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:14:05,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:14:05,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-04-14 01:14:05,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955659094] [2025-04-14 01:14:05,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:14:05,083 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-14 01:14:05,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:14:05,084 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-14 01:14:05,084 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-04-14 01:14:05,095 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2025-04-14 01:14:05,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 215 transitions, 2406 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:14:05,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:14:05,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2025-04-14 01:14:05,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:14:12,650 INFO L116 PetriNetUnfolderBase]: 63715/89774 cut-off events. [2025-04-14 01:14:12,650 INFO L117 PetriNetUnfolderBase]: For 363617/363724 co-relation queries the response was YES. [2025-04-14 01:14:13,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 387318 conditions, 89774 events. 63715/89774 cut-off events. For 363617/363724 co-relation queries the response was YES. Maximal size of possible extension queue 3299. Compared 645779 event pairs, 4864 based on Foata normal form. 239/89956 useless extension candidates. Maximal degree in co-relation 308814. Up to 59438 conditions per place. [2025-04-14 01:14:13,346 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 260 selfloop transitions, 174 changer transitions 11/455 dead transitions. [2025-04-14 01:14:13,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 455 transitions, 5417 flow [2025-04-14 01:14:13,347 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-14 01:14:13,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-04-14 01:14:13,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 249 transitions. [2025-04-14 01:14:13,348 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6352040816326531 [2025-04-14 01:14:13,348 INFO L175 Difference]: Start difference. First operand has 114 places, 215 transitions, 2406 flow. Second operand 8 states and 249 transitions. [2025-04-14 01:14:13,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 455 transitions, 5417 flow [2025-04-14 01:14:16,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 455 transitions, 5395 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-14 01:14:16,509 INFO L231 Difference]: Finished difference. Result has 124 places, 288 transitions, 4017 flow [2025-04-14 01:14:16,509 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2402, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4017, PETRI_PLACES=124, PETRI_TRANSITIONS=288} [2025-04-14 01:14:16,509 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 73 predicate places. [2025-04-14 01:14:16,510 INFO L485 AbstractCegarLoop]: Abstraction has has 124 places, 288 transitions, 4017 flow [2025-04-14 01:14:16,510 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:14:16,510 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:14:16,510 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:14:16,510 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-04-14 01:14:16,510 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 01:14:16,510 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:14:16,510 INFO L85 PathProgramCache]: Analyzing trace with hash 625700539, now seen corresponding path program 6 times [2025-04-14 01:14:16,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:14:16,511 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438827659] [2025-04-14 01:14:16,511 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-14 01:14:16,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:14:16,631 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 36 statements into 2 equivalence classes. [2025-04-14 01:14:16,641 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 35 of 36 statements. [2025-04-14 01:14:16,641 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-04-14 01:14:16,641 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:14:16,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:14:16,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:14:16,795 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438827659] [2025-04-14 01:14:16,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438827659] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:14:16,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:14:16,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-04-14 01:14:16,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801331308] [2025-04-14 01:14:16,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:14:16,796 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-14 01:14:16,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:14:16,796 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-14 01:14:16,796 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-04-14 01:14:16,806 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2025-04-14 01:14:16,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 288 transitions, 4017 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:14:16,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:14:16,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2025-04-14 01:14:16,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:14:28,100 INFO L116 PetriNetUnfolderBase]: 84246/119487 cut-off events. [2025-04-14 01:14:28,100 INFO L117 PetriNetUnfolderBase]: For 555926/555944 co-relation queries the response was YES. [2025-04-14 01:14:28,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 539365 conditions, 119487 events. 84246/119487 cut-off events. For 555926/555944 co-relation queries the response was YES. Maximal size of possible extension queue 4475. Compared 892672 event pairs, 8376 based on Foata normal form. 3471/122774 useless extension candidates. Maximal degree in co-relation 488611. Up to 30183 conditions per place. [2025-04-14 01:14:29,179 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 297 selfloop transitions, 336 changer transitions 2/645 dead transitions. [2025-04-14 01:14:29,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 645 transitions, 9683 flow [2025-04-14 01:14:29,180 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-14 01:14:29,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-14 01:14:29,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 201 transitions. [2025-04-14 01:14:29,181 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5860058309037901 [2025-04-14 01:14:29,181 INFO L175 Difference]: Start difference. First operand has 124 places, 288 transitions, 4017 flow. Second operand 7 states and 201 transitions. [2025-04-14 01:14:29,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 645 transitions, 9683 flow [2025-04-14 01:14:36,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 645 transitions, 9586 flow, removed 34 selfloop flow, removed 1 redundant places. [2025-04-14 01:14:36,267 INFO L231 Difference]: Finished difference. Result has 133 places, 456 transitions, 8029 flow [2025-04-14 01:14:36,267 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3967, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8029, PETRI_PLACES=133, PETRI_TRANSITIONS=456} [2025-04-14 01:14:36,268 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 82 predicate places. [2025-04-14 01:14:36,268 INFO L485 AbstractCegarLoop]: Abstraction has has 133 places, 456 transitions, 8029 flow [2025-04-14 01:14:36,268 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:14:36,268 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:14:36,268 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:14:36,269 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-04-14 01:14:36,270 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 01:14:36,270 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:14:36,270 INFO L85 PathProgramCache]: Analyzing trace with hash 683738181, now seen corresponding path program 7 times [2025-04-14 01:14:36,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:14:36,270 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029785175] [2025-04-14 01:14:36,270 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-14 01:14:36,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:14:36,277 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-04-14 01:14:36,286 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-04-14 01:14:36,286 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:14:36,286 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:14:36,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:14:36,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:14:36,482 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029785175] [2025-04-14 01:14:36,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029785175] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:14:36,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:14:36,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-04-14 01:14:36,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644233629] [2025-04-14 01:14:36,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:14:36,483 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-04-14 01:14:36,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:14:36,483 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-04-14 01:14:36,483 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-04-14 01:14:36,486 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 49 [2025-04-14 01:14:36,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 456 transitions, 8029 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:14:36,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:14:36,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 49 [2025-04-14 01:14:36,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:14:53,687 INFO L116 PetriNetUnfolderBase]: 114414/158201 cut-off events. [2025-04-14 01:14:53,687 INFO L117 PetriNetUnfolderBase]: For 919232/919293 co-relation queries the response was YES. [2025-04-14 01:14:54,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 770761 conditions, 158201 events. 114414/158201 cut-off events. For 919232/919293 co-relation queries the response was YES. Maximal size of possible extension queue 5526. Compared 1146915 event pairs, 17367 based on Foata normal form. 2450/160270 useless extension candidates. Maximal degree in co-relation 616547. Up to 92263 conditions per place. [2025-04-14 01:14:55,275 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 335 selfloop transitions, 299 changer transitions 8/650 dead transitions. [2025-04-14 01:14:55,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 650 transitions, 10575 flow [2025-04-14 01:14:55,276 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-14 01:14:55,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-04-14 01:14:55,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 246 transitions. [2025-04-14 01:14:55,277 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6275510204081632 [2025-04-14 01:14:55,277 INFO L175 Difference]: Start difference. First operand has 133 places, 456 transitions, 8029 flow. Second operand 8 states and 246 transitions. [2025-04-14 01:14:55,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 650 transitions, 10575 flow [2025-04-14 01:15:08,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 650 transitions, 10563 flow, removed 6 selfloop flow, removed 0 redundant places. [2025-04-14 01:15:08,499 INFO L231 Difference]: Finished difference. Result has 142 places, 444 transitions, 8486 flow [2025-04-14 01:15:08,500 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=7639, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=295, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8486, PETRI_PLACES=142, PETRI_TRANSITIONS=444} [2025-04-14 01:15:08,500 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 91 predicate places. [2025-04-14 01:15:08,500 INFO L485 AbstractCegarLoop]: Abstraction has has 142 places, 444 transitions, 8486 flow [2025-04-14 01:15:08,500 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:15:08,500 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:15:08,500 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:15:08,501 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-04-14 01:15:08,501 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-04-14 01:15:08,501 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:15:08,501 INFO L85 PathProgramCache]: Analyzing trace with hash 2105289565, now seen corresponding path program 8 times [2025-04-14 01:15:08,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:15:08,501 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59203045] [2025-04-14 01:15:08,501 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 01:15:08,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:15:08,507 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 36 statements into 2 equivalence classes. [2025-04-14 01:15:08,523 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 32 of 36 statements. [2025-04-14 01:15:08,524 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-14 01:15:08,524 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:15:08,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-14 01:15:08,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:15:08,691 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59203045] [2025-04-14 01:15:08,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59203045] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:15:08,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:15:08,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-14 01:15:08,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438326291] [2025-04-14 01:15:08,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:15:08,692 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-14 01:15:08,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:15:08,692 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-14 01:15:08,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-04-14 01:15:08,699 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2025-04-14 01:15:08,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 444 transitions, 8486 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:15:08,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:15:08,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2025-04-14 01:15:08,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:15:25,294 INFO L116 PetriNetUnfolderBase]: 105694/150554 cut-off events. [2025-04-14 01:15:25,294 INFO L117 PetriNetUnfolderBase]: For 1011744/1012015 co-relation queries the response was YES. [2025-04-14 01:15:26,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 743086 conditions, 150554 events. 105694/150554 cut-off events. For 1011744/1012015 co-relation queries the response was YES. Maximal size of possible extension queue 5558. Compared 1162050 event pairs, 18336 based on Foata normal form. 4024/154190 useless extension candidates. Maximal degree in co-relation 621660. Up to 96790 conditions per place. [2025-04-14 01:15:26,839 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 355 selfloop transitions, 374 changer transitions 15/756 dead transitions. [2025-04-14 01:15:26,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 756 transitions, 14160 flow [2025-04-14 01:15:26,840 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-14 01:15:26,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-04-14 01:15:26,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 289 transitions. [2025-04-14 01:15:26,841 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5897959183673469 [2025-04-14 01:15:26,841 INFO L175 Difference]: Start difference. First operand has 142 places, 444 transitions, 8486 flow. Second operand 10 states and 289 transitions. [2025-04-14 01:15:26,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 756 transitions, 14160 flow [2025-04-14 01:15:44,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 756 transitions, 13914 flow, removed 10 selfloop flow, removed 4 redundant places. [2025-04-14 01:15:44,837 INFO L231 Difference]: Finished difference. Result has 154 places, 574 transitions, 12443 flow [2025-04-14 01:15:44,837 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=8321, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=245, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12443, PETRI_PLACES=154, PETRI_TRANSITIONS=574} [2025-04-14 01:15:44,838 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 103 predicate places. [2025-04-14 01:15:44,838 INFO L485 AbstractCegarLoop]: Abstraction has has 154 places, 574 transitions, 12443 flow [2025-04-14 01:15:44,838 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:15:44,838 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:15:44,838 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:15:44,838 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-04-14 01:15:44,838 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 01:15:44,838 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:15:44,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1980482487, now seen corresponding path program 9 times [2025-04-14 01:15:44,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:15:44,839 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573425068] [2025-04-14 01:15:44,839 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 01:15:44,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:15:44,846 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 36 statements into 2 equivalence classes. [2025-04-14 01:15:44,859 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 35 of 36 statements. [2025-04-14 01:15:44,859 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-14 01:15:44,859 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:15:45,036 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 01:15:45,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:15:45,036 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573425068] [2025-04-14 01:15:45,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573425068] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:15:45,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:15:45,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-14 01:15:45,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183392295] [2025-04-14 01:15:45,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:15:45,036 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-14 01:15:45,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:15:45,037 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-14 01:15:45,037 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-04-14 01:15:45,043 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2025-04-14 01:15:45,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 574 transitions, 12443 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:15:45,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:15:45,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2025-04-14 01:15:45,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand