/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-max-array.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-14 01:17:52,260 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-14 01:17:52,297 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 01:17:52,300 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-14 01:17:52,300 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-14 01:17:52,314 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-14 01:17:52,314 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-14 01:17:52,314 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-14 01:17:52,314 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-14 01:17:52,314 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-14 01:17:52,314 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-14 01:17:52,314 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-14 01:17:52,315 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-14 01:17:52,315 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-14 01:17:52,315 INFO L153 SettingsManager]: * Use SBE=true [2025-04-14 01:17:52,315 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-14 01:17:52,315 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-14 01:17:52,315 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-14 01:17:52,315 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-14 01:17:52,315 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-14 01:17:52,315 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-14 01:17:52,315 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-14 01:17:52,315 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-14 01:17:52,315 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-14 01:17:52,315 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-14 01:17:52,315 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-14 01:17:52,315 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-14 01:17:52,316 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-14 01:17:52,316 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-14 01:17:52,316 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 01:17:52,316 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 01:17:52,316 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 01:17:52,316 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 01:17:52,316 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-14 01:17:52,316 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 01:17:52,316 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 01:17:52,316 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 01:17:52,316 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 01:17:52,316 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-14 01:17:52,316 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-14 01:17:52,316 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-14 01:17:52,316 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-14 01:17:52,316 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-14 01:17:52,317 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-14 01:17:52,317 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-14 01:17:52,317 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-14 01:17:52,317 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-14 01:17:52,317 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 01:17:52,522 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-14 01:17:52,527 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-14 01:17:52,531 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-14 01:17:52,532 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-14 01:17:52,534 INFO L274 PluginConnector]: CDTParser initialized [2025-04-14 01:17:52,535 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-max-array.wvr.c [2025-04-14 01:17:53,749 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68a04770f/a775d0a5aef34c6bbe82ff1b7170682e/FLAG2910303fa [2025-04-14 01:17:53,959 INFO L389 CDTParser]: Found 1 translation units. [2025-04-14 01:17:53,960 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-max-array.wvr.c [2025-04-14 01:17:53,968 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68a04770f/a775d0a5aef34c6bbe82ff1b7170682e/FLAG2910303fa [2025-04-14 01:17:54,749 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68a04770f/a775d0a5aef34c6bbe82ff1b7170682e [2025-04-14 01:17:54,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-14 01:17:54,754 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-14 01:17:54,755 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-14 01:17:54,755 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-14 01:17:54,757 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-14 01:17:54,758 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 01:17:54" (1/1) ... [2025-04-14 01:17:54,759 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37af46ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:17:54, skipping insertion in model container [2025-04-14 01:17:54,759 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 01:17:54" (1/1) ... [2025-04-14 01:17:54,772 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-14 01:17:54,940 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-max-array.wvr.c[2592,2605] [2025-04-14 01:17:54,947 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 01:17:54,956 INFO L200 MainTranslator]: Completed pre-run [2025-04-14 01:17:54,988 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-max-array.wvr.c[2592,2605] [2025-04-14 01:17:54,993 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 01:17:55,007 INFO L204 MainTranslator]: Completed translation [2025-04-14 01:17:55,008 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:17:55 WrapperNode [2025-04-14 01:17:55,009 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-14 01:17:55,009 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-14 01:17:55,010 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-14 01:17:55,010 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-14 01:17:55,014 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:17:55" (1/1) ... [2025-04-14 01:17:55,022 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:17:55" (1/1) ... [2025-04-14 01:17:55,040 INFO L138 Inliner]: procedures = 23, calls = 28, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 83 [2025-04-14 01:17:55,040 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-14 01:17:55,042 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-14 01:17:55,042 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-14 01:17:55,042 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-14 01:17:55,048 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:17:55" (1/1) ... [2025-04-14 01:17:55,048 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:17:55" (1/1) ... [2025-04-14 01:17:55,051 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:17:55" (1/1) ... [2025-04-14 01:17:55,072 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-04-14 01:17:55,072 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:17:55" (1/1) ... [2025-04-14 01:17:55,072 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:17:55" (1/1) ... [2025-04-14 01:17:55,076 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:17:55" (1/1) ... [2025-04-14 01:17:55,077 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:17:55" (1/1) ... [2025-04-14 01:17:55,077 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:17:55" (1/1) ... [2025-04-14 01:17:55,078 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:17:55" (1/1) ... [2025-04-14 01:17:55,082 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-14 01:17:55,083 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-14 01:17:55,083 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-14 01:17:55,083 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-14 01:17:55,084 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:17:55" (1/1) ... [2025-04-14 01:17:55,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 01:17:55,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:17:55,115 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 01:17:55,121 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 01:17:55,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-14 01:17:55,134 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-14 01:17:55,134 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-14 01:17:55,134 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-14 01:17:55,134 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-14 01:17:55,134 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-14 01:17:55,134 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-14 01:17:55,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-14 01:17:55,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-14 01:17:55,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-14 01:17:55,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-04-14 01:17:55,134 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-14 01:17:55,134 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-14 01:17:55,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-14 01:17:55,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-14 01:17:55,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-14 01:17:55,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-14 01:17:55,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-04-14 01:17:55,135 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 01:17:55,203 INFO L256 CfgBuilder]: Building ICFG [2025-04-14 01:17:55,204 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-14 01:17:55,406 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-14 01:17:55,406 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-14 01:17:55,406 INFO L318 CfgBuilder]: Performing block encoding [2025-04-14 01:17:55,589 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-14 01:17:55,592 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-14 01:17:55,594 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-14 01:17:55,598 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-14 01:17:55,599 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 01:17:55 BoogieIcfgContainer [2025-04-14 01:17:55,599 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-14 01:17:55,600 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-14 01:17:55,600 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-14 01:17:55,603 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-14 01:17:55,603 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.04 01:17:54" (1/3) ... [2025-04-14 01:17:55,604 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@224eb428 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 01:17:55, skipping insertion in model container [2025-04-14 01:17:55,604 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 01:17:55" (2/3) ... [2025-04-14 01:17:55,604 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@224eb428 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 01:17:55, skipping insertion in model container [2025-04-14 01:17:55,604 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 01:17:55" (3/3) ... [2025-04-14 01:17:55,605 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-max-array.wvr.c [2025-04-14 01:17:55,614 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-14 01:17:55,615 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-max-array.wvr.c that has 4 procedures, 26 locations, 29 edges, 1 initial locations, 4 loop locations, and 1 error locations. [2025-04-14 01:17:55,615 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-14 01:17:55,658 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-04-14 01:17:55,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 32 transitions, 85 flow [2025-04-14 01:17:55,722 INFO L116 PetriNetUnfolderBase]: 7/29 cut-off events. [2025-04-14 01:17:55,724 INFO L117 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-04-14 01:17:55,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 29 events. 7/29 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 30 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2025-04-14 01:17:55,726 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 32 transitions, 85 flow [2025-04-14 01:17:55,729 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 28 transitions, 74 flow [2025-04-14 01:17:55,733 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-14 01:17:55,743 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;@126174f4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-14 01:17:55,743 INFO L341 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-04-14 01:17:55,755 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-14 01:17:55,756 INFO L116 PetriNetUnfolderBase]: 7/27 cut-off events. [2025-04-14 01:17:55,756 INFO L117 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-04-14 01:17:55,756 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:17:55,756 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:17:55,757 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 1 more)] === [2025-04-14 01:17:55,760 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:17:55,760 INFO L85 PathProgramCache]: Analyzing trace with hash -203059738, now seen corresponding path program 1 times [2025-04-14 01:17:55,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:17:55,766 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641202025] [2025-04-14 01:17:55,766 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:17:55,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:17:55,814 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-14 01:17:55,831 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-14 01:17:55,832 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:17:55,832 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:17:55,941 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 01:17:55,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:17:55,942 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641202025] [2025-04-14 01:17:55,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641202025] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:17:55,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:17:55,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-14 01:17:55,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420278311] [2025-04-14 01:17:55,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:17:55,949 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-14 01:17:55,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:17:55,964 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-14 01:17:55,964 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-14 01:17:55,965 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 32 [2025-04-14 01:17:55,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 28 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:17:55,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:17:55,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 32 [2025-04-14 01:17:55,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:17:56,123 INFO L116 PetriNetUnfolderBase]: 511/703 cut-off events. [2025-04-14 01:17:56,123 INFO L117 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2025-04-14 01:17:56,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1474 conditions, 703 events. 511/703 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1960 event pairs, 306 based on Foata normal form. 0/498 useless extension candidates. Maximal degree in co-relation 1304. Up to 701 conditions per place. [2025-04-14 01:17:56,130 INFO L140 encePairwiseOnDemand]: 30/32 looper letters, 26 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2025-04-14 01:17:56,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 27 transitions, 126 flow [2025-04-14 01:17:56,131 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-14 01:17:56,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-14 01:17:56,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2025-04-14 01:17:56,139 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2025-04-14 01:17:56,140 INFO L175 Difference]: Start difference. First operand has 31 places, 28 transitions, 74 flow. Second operand 3 states and 37 transitions. [2025-04-14 01:17:56,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 27 transitions, 126 flow [2025-04-14 01:17:56,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 27 transitions, 114 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-04-14 01:17:56,148 INFO L231 Difference]: Finished difference. Result has 27 places, 27 transitions, 62 flow [2025-04-14 01:17:56,149 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=27, PETRI_TRANSITIONS=27} [2025-04-14 01:17:56,153 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, -4 predicate places. [2025-04-14 01:17:56,153 INFO L485 AbstractCegarLoop]: Abstraction has has 27 places, 27 transitions, 62 flow [2025-04-14 01:17:56,153 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:17:56,153 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:17:56,153 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:17:56,154 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-14 01:17:56,154 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 1 more)] === [2025-04-14 01:17:56,154 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:17:56,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1616618239, now seen corresponding path program 1 times [2025-04-14 01:17:56,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:17:56,154 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921725712] [2025-04-14 01:17:56,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:17:56,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:17:56,166 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-14 01:17:56,179 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-14 01:17:56,179 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:17:56,179 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:17:56,232 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 01:17:56,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:17:56,235 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921725712] [2025-04-14 01:17:56,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921725712] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:17:56,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:17:56,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-14 01:17:56,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061221677] [2025-04-14 01:17:56,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:17:56,236 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-14 01:17:56,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:17:56,236 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-14 01:17:56,237 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-14 01:17:56,237 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 32 [2025-04-14 01:17:56,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 27 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:17:56,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:17:56,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 32 [2025-04-14 01:17:56,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:17:56,348 INFO L116 PetriNetUnfolderBase]: 474/666 cut-off events. [2025-04-14 01:17:56,349 INFO L117 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-04-14 01:17:56,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1357 conditions, 666 events. 474/666 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1870 event pairs, 306 based on Foata normal form. 0/499 useless extension candidates. Maximal degree in co-relation 1347. Up to 664 conditions per place. [2025-04-14 01:17:56,354 INFO L140 encePairwiseOnDemand]: 30/32 looper letters, 25 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2025-04-14 01:17:56,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 26 transitions, 112 flow [2025-04-14 01:17:56,354 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-14 01:17:56,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-14 01:17:56,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 36 transitions. [2025-04-14 01:17:56,356 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.375 [2025-04-14 01:17:56,356 INFO L175 Difference]: Start difference. First operand has 27 places, 27 transitions, 62 flow. Second operand 3 states and 36 transitions. [2025-04-14 01:17:56,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 26 transitions, 112 flow [2025-04-14 01:17:56,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 26 transitions, 111 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-14 01:17:56,357 INFO L231 Difference]: Finished difference. Result has 28 places, 26 transitions, 61 flow [2025-04-14 01:17:56,357 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=59, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=61, PETRI_PLACES=28, PETRI_TRANSITIONS=26} [2025-04-14 01:17:56,357 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, -3 predicate places. [2025-04-14 01:17:56,357 INFO L485 AbstractCegarLoop]: Abstraction has has 28 places, 26 transitions, 61 flow [2025-04-14 01:17:56,357 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:17:56,357 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:17:56,357 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:17:56,358 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-14 01:17:56,358 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 1 more)] === [2025-04-14 01:17:56,358 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:17:56,358 INFO L85 PathProgramCache]: Analyzing trace with hash -856983612, now seen corresponding path program 1 times [2025-04-14 01:17:56,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:17:56,358 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208772868] [2025-04-14 01:17:56,358 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:17:56,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:17:56,370 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-14 01:17:56,386 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-14 01:17:56,386 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:17:56,386 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:17:56,508 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 01:17:56,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:17:56,508 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208772868] [2025-04-14 01:17:56,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208772868] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:17:56,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:17:56,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-14 01:17:56,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968747777] [2025-04-14 01:17:56,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:17:56,508 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-14 01:17:56,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:17:56,509 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-14 01:17:56,509 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-14 01:17:56,509 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 32 [2025-04-14 01:17:56,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 26 transitions, 61 flow. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:17:56,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:17:56,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 32 [2025-04-14 01:17:56,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:17:56,606 INFO L116 PetriNetUnfolderBase]: 474/667 cut-off events. [2025-04-14 01:17:56,607 INFO L117 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-04-14 01:17:56,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1360 conditions, 667 events. 474/667 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1870 event pairs, 306 based on Foata normal form. 1/501 useless extension candidates. Maximal degree in co-relation 1347. Up to 667 conditions per place. [2025-04-14 01:17:56,611 INFO L140 encePairwiseOnDemand]: 29/32 looper letters, 25 selfloop transitions, 2 changer transitions 0/27 dead transitions. [2025-04-14 01:17:56,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 27 transitions, 117 flow [2025-04-14 01:17:56,612 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-14 01:17:56,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-14 01:17:56,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2025-04-14 01:17:56,613 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2025-04-14 01:17:56,613 INFO L175 Difference]: Start difference. First operand has 28 places, 26 transitions, 61 flow. Second operand 3 states and 37 transitions. [2025-04-14 01:17:56,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 27 transitions, 117 flow [2025-04-14 01:17:56,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 27 transitions, 116 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-14 01:17:56,615 INFO L231 Difference]: Finished difference. Result has 30 places, 27 transitions, 72 flow [2025-04-14 01:17:56,615 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=30, PETRI_TRANSITIONS=27} [2025-04-14 01:17:56,616 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, -1 predicate places. [2025-04-14 01:17:56,616 INFO L485 AbstractCegarLoop]: Abstraction has has 30 places, 27 transitions, 72 flow [2025-04-14 01:17:56,616 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:17:56,616 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:17:56,616 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:17:56,616 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-14 01:17:56,616 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 1 more)] === [2025-04-14 01:17:56,617 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:17:56,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1717149542, now seen corresponding path program 1 times [2025-04-14 01:17:56,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:17:56,618 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294809306] [2025-04-14 01:17:56,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:17:56,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:17:56,628 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-14 01:17:56,656 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-14 01:17:56,656 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:17:56,656 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:17:57,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:17:57,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:17:57,661 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294809306] [2025-04-14 01:17:57,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294809306] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:17:57,661 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111397307] [2025-04-14 01:17:57,661 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:17:57,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:17:57,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:17:57,665 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:17:57,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-04-14 01:17:57,710 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-14 01:17:57,729 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-14 01:17:57,729 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:17:57,729 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:17:57,731 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-04-14 01:17:57,735 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:17:57,780 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-14 01:17:58,066 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 31 [2025-04-14 01:17:58,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:17:58,146 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:17:58,783 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 39 [2025-04-14 01:17:58,786 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 50 [2025-04-14 01:17:58,802 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 57 [2025-04-14 01:17:58,806 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 71 [2025-04-14 01:17:58,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:17:58,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111397307] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 01:17:58,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 01:17:58,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 7] total 24 [2025-04-14 01:17:58,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405507373] [2025-04-14 01:17:58,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 01:17:58,856 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-04-14 01:17:58,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:17:58,856 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-04-14 01:17:58,857 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2025-04-14 01:17:58,857 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 32 [2025-04-14 01:17:58,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 72 flow. Second operand has 26 states, 26 states have (on average 5.153846153846154) internal successors, (134), 26 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:17:58,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:17:58,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 32 [2025-04-14 01:17:58,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:18:00,360 INFO L116 PetriNetUnfolderBase]: 955/1407 cut-off events. [2025-04-14 01:18:00,360 INFO L117 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2025-04-14 01:18:00,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2876 conditions, 1407 events. 955/1407 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5754 event pairs, 10 based on Foata normal form. 1/1146 useless extension candidates. Maximal degree in co-relation 2865. Up to 841 conditions per place. [2025-04-14 01:18:00,365 INFO L140 encePairwiseOnDemand]: 17/32 looper letters, 110 selfloop transitions, 67 changer transitions 1/178 dead transitions. [2025-04-14 01:18:00,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 178 transitions, 764 flow [2025-04-14 01:18:00,365 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-04-14 01:18:00,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2025-04-14 01:18:00,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 251 transitions. [2025-04-14 01:18:00,367 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.3268229166666667 [2025-04-14 01:18:00,367 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 72 flow. Second operand 24 states and 251 transitions. [2025-04-14 01:18:00,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 178 transitions, 764 flow [2025-04-14 01:18:00,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 178 transitions, 760 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-04-14 01:18:00,370 INFO L231 Difference]: Finished difference. Result has 62 places, 92 transitions, 425 flow [2025-04-14 01:18:00,370 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=425, PETRI_PLACES=62, PETRI_TRANSITIONS=92} [2025-04-14 01:18:00,371 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 31 predicate places. [2025-04-14 01:18:00,371 INFO L485 AbstractCegarLoop]: Abstraction has has 62 places, 92 transitions, 425 flow [2025-04-14 01:18:00,371 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.153846153846154) internal successors, (134), 26 states have internal predecessors, (134), 0 states have call successors, (0), 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 01:18:00,371 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:18:00,371 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:18:00,379 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-04-14 01:18:00,576 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:18:00,576 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 1 more)] === [2025-04-14 01:18:00,576 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:18:00,577 INFO L85 PathProgramCache]: Analyzing trace with hash 731997248, now seen corresponding path program 2 times [2025-04-14 01:18:00,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:18:00,577 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459168183] [2025-04-14 01:18:00,577 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 01:18:00,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:18:00,587 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-14 01:18:00,595 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 19 of 20 statements. [2025-04-14 01:18:00,597 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-14 01:18:00,598 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:18:00,971 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 01:18:00,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:18:00,972 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459168183] [2025-04-14 01:18:00,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459168183] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:18:00,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:18:00,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-04-14 01:18:00,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712877067] [2025-04-14 01:18:00,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:18:00,973 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-14 01:18:00,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:18:00,973 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-14 01:18:00,973 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2025-04-14 01:18:00,973 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 32 [2025-04-14 01:18:00,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 92 transitions, 425 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 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 01:18:00,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:18:00,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 32 [2025-04-14 01:18:00,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:18:01,342 INFO L116 PetriNetUnfolderBase]: 997/1480 cut-off events. [2025-04-14 01:18:01,342 INFO L117 PetriNetUnfolderBase]: For 1170/1170 co-relation queries the response was YES. [2025-04-14 01:18:01,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4758 conditions, 1480 events. 997/1480 cut-off events. For 1170/1170 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 6067 event pairs, 80 based on Foata normal form. 1/1278 useless extension candidates. Maximal degree in co-relation 4728. Up to 1341 conditions per place. [2025-04-14 01:18:01,350 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 106 selfloop transitions, 31 changer transitions 4/141 dead transitions. [2025-04-14 01:18:01,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 141 transitions, 898 flow [2025-04-14 01:18:01,350 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-04-14 01:18:01,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-04-14 01:18:01,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 115 transitions. [2025-04-14 01:18:01,351 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.2994791666666667 [2025-04-14 01:18:01,351 INFO L175 Difference]: Start difference. First operand has 62 places, 92 transitions, 425 flow. Second operand 12 states and 115 transitions. [2025-04-14 01:18:01,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 141 transitions, 898 flow [2025-04-14 01:18:01,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 141 transitions, 896 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-14 01:18:01,362 INFO L231 Difference]: Finished difference. Result has 79 places, 113 transitions, 652 flow [2025-04-14 01:18:01,363 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=652, PETRI_PLACES=79, PETRI_TRANSITIONS=113} [2025-04-14 01:18:01,364 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 48 predicate places. [2025-04-14 01:18:01,364 INFO L485 AbstractCegarLoop]: Abstraction has has 79 places, 113 transitions, 652 flow [2025-04-14 01:18:01,365 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 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 01:18:01,365 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:18:01,365 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:18:01,365 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-14 01:18:01,365 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 1 more)] === [2025-04-14 01:18:01,365 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:18:01,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1038063004, now seen corresponding path program 3 times [2025-04-14 01:18:01,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:18:01,365 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095787300] [2025-04-14 01:18:01,365 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 01:18:01,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:18:01,372 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 2 equivalence classes. [2025-04-14 01:18:01,383 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 19 of 20 statements. [2025-04-14 01:18:01,384 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-14 01:18:01,384 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:18:01,739 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 01:18:01,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:18:01,739 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095787300] [2025-04-14 01:18:01,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095787300] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:18:01,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:18:01,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-04-14 01:18:01,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894104859] [2025-04-14 01:18:01,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:18:01,740 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-14 01:18:01,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:18:01,743 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-14 01:18:01,744 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2025-04-14 01:18:01,744 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 32 [2025-04-14 01:18:01,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 113 transitions, 652 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 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 01:18:01,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:18:01,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 32 [2025-04-14 01:18:01,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:18:02,158 INFO L116 PetriNetUnfolderBase]: 1113/1660 cut-off events. [2025-04-14 01:18:02,159 INFO L117 PetriNetUnfolderBase]: For 2214/2214 co-relation queries the response was YES. [2025-04-14 01:18:02,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6026 conditions, 1660 events. 1113/1660 cut-off events. For 2214/2214 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 7094 event pairs, 78 based on Foata normal form. 1/1448 useless extension candidates. Maximal degree in co-relation 5987. Up to 1456 conditions per place. [2025-04-14 01:18:02,168 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 124 selfloop transitions, 53 changer transitions 4/181 dead transitions. [2025-04-14 01:18:02,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 181 transitions, 1348 flow [2025-04-14 01:18:02,168 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-04-14 01:18:02,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-04-14 01:18:02,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2025-04-14 01:18:02,169 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.3385416666666667 [2025-04-14 01:18:02,169 INFO L175 Difference]: Start difference. First operand has 79 places, 113 transitions, 652 flow. Second operand 12 states and 130 transitions. [2025-04-14 01:18:02,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 181 transitions, 1348 flow [2025-04-14 01:18:02,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 181 transitions, 1314 flow, removed 16 selfloop flow, removed 1 redundant places. [2025-04-14 01:18:02,182 INFO L231 Difference]: Finished difference. Result has 96 places, 145 transitions, 1043 flow [2025-04-14 01:18:02,183 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1043, PETRI_PLACES=96, PETRI_TRANSITIONS=145} [2025-04-14 01:18:02,183 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 65 predicate places. [2025-04-14 01:18:02,183 INFO L485 AbstractCegarLoop]: Abstraction has has 96 places, 145 transitions, 1043 flow [2025-04-14 01:18:02,183 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 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 01:18:02,183 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:18:02,183 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:18:02,183 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-04-14 01:18:02,184 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 1 more)] === [2025-04-14 01:18:02,184 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:18:02,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1888759312, now seen corresponding path program 4 times [2025-04-14 01:18:02,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:18:02,184 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036701908] [2025-04-14 01:18:02,184 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 01:18:02,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:18:02,189 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-04-14 01:18:02,195 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-14 01:18:02,195 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-14 01:18:02,195 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:18:02,603 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 01:18:02,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:18:02,604 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036701908] [2025-04-14 01:18:02,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036701908] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:18:02,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:18:02,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-04-14 01:18:02,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256781676] [2025-04-14 01:18:02,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:18:02,605 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-14 01:18:02,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:18:02,605 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-14 01:18:02,605 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2025-04-14 01:18:02,605 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 32 [2025-04-14 01:18:02,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 145 transitions, 1043 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 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 01:18:02,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:18:02,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 32 [2025-04-14 01:18:02,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:18:03,004 INFO L116 PetriNetUnfolderBase]: 1214/1819 cut-off events. [2025-04-14 01:18:03,004 INFO L117 PetriNetUnfolderBase]: For 3725/3725 co-relation queries the response was YES. [2025-04-14 01:18:03,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7433 conditions, 1819 events. 1214/1819 cut-off events. For 3725/3725 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 7913 event pairs, 149 based on Foata normal form. 1/1595 useless extension candidates. Maximal degree in co-relation 7385. Up to 1606 conditions per place. [2025-04-14 01:18:03,016 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 139 selfloop transitions, 66 changer transitions 4/209 dead transitions. [2025-04-14 01:18:03,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 209 transitions, 1832 flow [2025-04-14 01:18:03,016 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-04-14 01:18:03,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-04-14 01:18:03,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2025-04-14 01:18:03,017 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.328125 [2025-04-14 01:18:03,017 INFO L175 Difference]: Start difference. First operand has 96 places, 145 transitions, 1043 flow. Second operand 12 states and 126 transitions. [2025-04-14 01:18:03,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 209 transitions, 1832 flow [2025-04-14 01:18:03,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 209 transitions, 1786 flow, removed 16 selfloop flow, removed 2 redundant places. [2025-04-14 01:18:03,058 INFO L231 Difference]: Finished difference. Result has 113 places, 176 transitions, 1522 flow [2025-04-14 01:18:03,058 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1000, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1522, PETRI_PLACES=113, PETRI_TRANSITIONS=176} [2025-04-14 01:18:03,059 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 82 predicate places. [2025-04-14 01:18:03,059 INFO L485 AbstractCegarLoop]: Abstraction has has 113 places, 176 transitions, 1522 flow [2025-04-14 01:18:03,059 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 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 01:18:03,059 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:18:03,059 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:18:03,059 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-04-14 01:18:03,059 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 1 more)] === [2025-04-14 01:18:03,060 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:18:03,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1154996746, now seen corresponding path program 5 times [2025-04-14 01:18:03,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:18:03,060 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307804142] [2025-04-14 01:18:03,060 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 01:18:03,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:18:03,065 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-14 01:18:03,074 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-14 01:18:03,074 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:18:03,074 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:18:03,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:18:03,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:18:03,541 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307804142] [2025-04-14 01:18:03,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307804142] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:18:03,541 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124969391] [2025-04-14 01:18:03,541 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 01:18:03,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:18:03,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:18:03,543 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:18:03,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-04-14 01:18:03,585 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-14 01:18:03,602 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-14 01:18:03,602 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:18:03,602 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:18:03,603 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-04-14 01:18:03,604 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:18:03,623 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-14 01:18:03,847 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 31 [2025-04-14 01:18:03,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:18:03,887 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:18:04,373 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 57 [2025-04-14 01:18:04,375 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 71 [2025-04-14 01:18:04,404 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 39 [2025-04-14 01:18:04,407 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 50 [2025-04-14 01:18:04,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:18:04,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124969391] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 01:18:04,412 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 01:18:04,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 23 [2025-04-14 01:18:04,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891150135] [2025-04-14 01:18:04,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 01:18:04,412 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-04-14 01:18:04,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:18:04,413 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-04-14 01:18:04,413 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2025-04-14 01:18:04,413 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 32 [2025-04-14 01:18:04,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 176 transitions, 1522 flow. Second operand has 25 states, 25 states have (on average 5.28) internal successors, (132), 25 states have internal predecessors, (132), 0 states have call successors, (0), 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 01:18:04,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:18:04,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 32 [2025-04-14 01:18:04,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:18:07,974 INFO L116 PetriNetUnfolderBase]: 2558/3869 cut-off events. [2025-04-14 01:18:07,974 INFO L117 PetriNetUnfolderBase]: For 11255/11255 co-relation queries the response was YES. [2025-04-14 01:18:07,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17827 conditions, 3869 events. 2558/3869 cut-off events. For 11255/11255 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 20122 event pairs, 87 based on Foata normal form. 2/3430 useless extension candidates. Maximal degree in co-relation 17710. Up to 1625 conditions per place. [2025-04-14 01:18:08,001 INFO L140 encePairwiseOnDemand]: 16/32 looper letters, 266 selfloop transitions, 524 changer transitions 5/795 dead transitions. [2025-04-14 01:18:08,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 795 transitions, 7438 flow [2025-04-14 01:18:08,001 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2025-04-14 01:18:08,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2025-04-14 01:18:08,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 729 transitions. [2025-04-14 01:18:08,004 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.3120719178082192 [2025-04-14 01:18:08,004 INFO L175 Difference]: Start difference. First operand has 113 places, 176 transitions, 1522 flow. Second operand 73 states and 729 transitions. [2025-04-14 01:18:08,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 795 transitions, 7438 flow [2025-04-14 01:18:08,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 795 transitions, 7209 flow, removed 113 selfloop flow, removed 1 redundant places. [2025-04-14 01:18:08,079 INFO L231 Difference]: Finished difference. Result has 204 places, 605 transitions, 6485 flow [2025-04-14 01:18:08,080 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1442, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=73, PETRI_FLOW=6485, PETRI_PLACES=204, PETRI_TRANSITIONS=605} [2025-04-14 01:18:08,080 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 173 predicate places. [2025-04-14 01:18:08,080 INFO L485 AbstractCegarLoop]: Abstraction has has 204 places, 605 transitions, 6485 flow [2025-04-14 01:18:08,080 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.28) internal successors, (132), 25 states have internal predecessors, (132), 0 states have call successors, (0), 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 01:18:08,080 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:18:08,080 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:18:08,092 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-04-14 01:18:08,281 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-04-14 01:18:08,281 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 1 more)] === [2025-04-14 01:18:08,282 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:18:08,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1616745152, now seen corresponding path program 6 times [2025-04-14 01:18:08,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:18:08,282 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476673104] [2025-04-14 01:18:08,282 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-14 01:18:08,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:18:08,290 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 2 equivalence classes. [2025-04-14 01:18:08,301 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 19 of 20 statements. [2025-04-14 01:18:08,305 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-04-14 01:18:08,305 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:18:08,614 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 01:18:08,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:18:08,614 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476673104] [2025-04-14 01:18:08,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476673104] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:18:08,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:18:08,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-04-14 01:18:08,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296856486] [2025-04-14 01:18:08,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:18:08,615 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-14 01:18:08,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:18:08,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-14 01:18:08,615 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2025-04-14 01:18:08,615 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 32 [2025-04-14 01:18:08,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 605 transitions, 6485 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 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 01:18:08,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:18:08,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 32 [2025-04-14 01:18:08,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:18:09,239 INFO L116 PetriNetUnfolderBase]: 2580/3905 cut-off events. [2025-04-14 01:18:09,239 INFO L117 PetriNetUnfolderBase]: For 16288/16288 co-relation queries the response was YES. [2025-04-14 01:18:09,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21691 conditions, 3905 events. 2580/3905 cut-off events. For 16288/16288 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 20224 event pairs, 209 based on Foata normal form. 1/3490 useless extension candidates. Maximal degree in co-relation 21545. Up to 3651 conditions per place. [2025-04-14 01:18:09,279 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 541 selfloop transitions, 105 changer transitions 4/650 dead transitions. [2025-04-14 01:18:09,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 650 transitions, 8058 flow [2025-04-14 01:18:09,280 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-04-14 01:18:09,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-04-14 01:18:09,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 126 transitions. [2025-04-14 01:18:09,280 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.30288461538461536 [2025-04-14 01:18:09,280 INFO L175 Difference]: Start difference. First operand has 204 places, 605 transitions, 6485 flow. Second operand 13 states and 126 transitions. [2025-04-14 01:18:09,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 650 transitions, 8058 flow [2025-04-14 01:18:09,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 650 transitions, 7023 flow, removed 471 selfloop flow, removed 5 redundant places. [2025-04-14 01:18:09,567 INFO L231 Difference]: Finished difference. Result has 214 places, 622 transitions, 5878 flow [2025-04-14 01:18:09,567 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5482, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5878, PETRI_PLACES=214, PETRI_TRANSITIONS=622} [2025-04-14 01:18:09,568 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 183 predicate places. [2025-04-14 01:18:09,568 INFO L485 AbstractCegarLoop]: Abstraction has has 214 places, 622 transitions, 5878 flow [2025-04-14 01:18:09,568 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 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 01:18:09,568 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:18:09,568 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:18:09,568 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-04-14 01:18:09,568 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 1 more)] === [2025-04-14 01:18:09,568 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:18:09,569 INFO L85 PathProgramCache]: Analyzing trace with hash -538401506, now seen corresponding path program 7 times [2025-04-14 01:18:09,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:18:09,569 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582576575] [2025-04-14 01:18:09,569 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-14 01:18:09,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:18:09,574 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-14 01:18:09,582 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-14 01:18:09,582 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:18:09,582 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:18:09,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:18:09,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:18:09,892 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582576575] [2025-04-14 01:18:09,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582576575] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:18:09,892 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226271259] [2025-04-14 01:18:09,892 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-14 01:18:09,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:18:09,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:18:09,894 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:18:09,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-04-14 01:18:09,929 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-14 01:18:09,942 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-14 01:18:09,943 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:18:09,943 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:18:09,943 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-04-14 01:18:09,945 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:18:09,959 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-14 01:18:10,123 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 31 [2025-04-14 01:18:10,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:18:10,159 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:18:10,553 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 57 [2025-04-14 01:18:10,555 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 71 [2025-04-14 01:18:10,582 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 39 [2025-04-14 01:18:10,585 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 50 [2025-04-14 01:18:10,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:18:10,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226271259] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 01:18:10,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 01:18:10,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 23 [2025-04-14 01:18:10,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402722423] [2025-04-14 01:18:10,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 01:18:10,588 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-04-14 01:18:10,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:18:10,589 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-04-14 01:18:10,589 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2025-04-14 01:18:10,589 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 32 [2025-04-14 01:18:10,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 622 transitions, 5878 flow. Second operand has 25 states, 25 states have (on average 5.24) internal successors, (131), 25 states have internal predecessors, (131), 0 states have call successors, (0), 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 01:18:10,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:18:10,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 32 [2025-04-14 01:18:10,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:18:12,667 INFO L116 PetriNetUnfolderBase]: 3402/5148 cut-off events. [2025-04-14 01:18:12,668 INFO L117 PetriNetUnfolderBase]: For 13137/13137 co-relation queries the response was YES. [2025-04-14 01:18:12,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25214 conditions, 5148 events. 3402/5148 cut-off events. For 13137/13137 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 28292 event pairs, 117 based on Foata normal form. 3/4669 useless extension candidates. Maximal degree in co-relation 25039. Up to 2346 conditions per place. [2025-04-14 01:18:12,706 INFO L140 encePairwiseOnDemand]: 16/32 looper letters, 303 selfloop transitions, 604 changer transitions 1/908 dead transitions. [2025-04-14 01:18:12,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 908 transitions, 9691 flow [2025-04-14 01:18:12,708 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-04-14 01:18:12,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2025-04-14 01:18:12,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 379 transitions. [2025-04-14 01:18:12,709 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.3289930555555556 [2025-04-14 01:18:12,709 INFO L175 Difference]: Start difference. First operand has 214 places, 622 transitions, 5878 flow. Second operand 36 states and 379 transitions. [2025-04-14 01:18:12,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 908 transitions, 9691 flow [2025-04-14 01:18:12,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 908 transitions, 9451 flow, removed 92 selfloop flow, removed 2 redundant places. [2025-04-14 01:18:12,878 INFO L231 Difference]: Finished difference. Result has 257 places, 801 transitions, 9118 flow [2025-04-14 01:18:12,879 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5678, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=444, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=9118, PETRI_PLACES=257, PETRI_TRANSITIONS=801} [2025-04-14 01:18:12,879 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 226 predicate places. [2025-04-14 01:18:12,880 INFO L485 AbstractCegarLoop]: Abstraction has has 257 places, 801 transitions, 9118 flow [2025-04-14 01:18:12,880 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.24) internal successors, (131), 25 states have internal predecessors, (131), 0 states have call successors, (0), 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 01:18:12,880 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:18:12,880 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:18:12,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-04-14 01:18:13,080 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:18:13,081 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 1 more)] === [2025-04-14 01:18:13,081 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:18:13,081 INFO L85 PathProgramCache]: Analyzing trace with hash -609418198, now seen corresponding path program 8 times [2025-04-14 01:18:13,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:18:13,081 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923460797] [2025-04-14 01:18:13,081 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 01:18:13,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:18:13,085 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-14 01:18:13,090 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 19 of 20 statements. [2025-04-14 01:18:13,090 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-14 01:18:13,090 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:18:13,387 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 01:18:13,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:18:13,387 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923460797] [2025-04-14 01:18:13,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923460797] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:18:13,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:18:13,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-04-14 01:18:13,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147311637] [2025-04-14 01:18:13,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:18:13,388 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-14 01:18:13,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:18:13,388 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-14 01:18:13,388 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2025-04-14 01:18:13,388 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 32 [2025-04-14 01:18:13,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 801 transitions, 9118 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 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 01:18:13,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:18:13,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 32 [2025-04-14 01:18:13,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:18:14,399 INFO L116 PetriNetUnfolderBase]: 3490/5302 cut-off events. [2025-04-14 01:18:14,399 INFO L117 PetriNetUnfolderBase]: For 19153/19153 co-relation queries the response was YES. [2025-04-14 01:18:14,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31138 conditions, 5302 events. 3490/5302 cut-off events. For 19153/19153 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 29432 event pairs, 276 based on Foata normal form. 2/4802 useless extension candidates. Maximal degree in co-relation 30944. Up to 4979 conditions per place. [2025-04-14 01:18:14,448 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 740 selfloop transitions, 125 changer transitions 5/870 dead transitions. [2025-04-14 01:18:14,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 870 transitions, 11616 flow [2025-04-14 01:18:14,453 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-04-14 01:18:14,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-04-14 01:18:14,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2025-04-14 01:18:14,454 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.3125 [2025-04-14 01:18:14,454 INFO L175 Difference]: Start difference. First operand has 257 places, 801 transitions, 9118 flow. Second operand 12 states and 120 transitions. [2025-04-14 01:18:14,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 870 transitions, 11616 flow [2025-04-14 01:18:14,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 870 transitions, 11112 flow, removed 159 selfloop flow, removed 14 redundant places. [2025-04-14 01:18:14,804 INFO L231 Difference]: Finished difference. Result has 260 places, 837 transitions, 9573 flow [2025-04-14 01:18:14,805 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=8684, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=801, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=689, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9573, PETRI_PLACES=260, PETRI_TRANSITIONS=837} [2025-04-14 01:18:14,805 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 229 predicate places. [2025-04-14 01:18:14,805 INFO L485 AbstractCegarLoop]: Abstraction has has 260 places, 837 transitions, 9573 flow [2025-04-14 01:18:14,805 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 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 01:18:14,805 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:18:14,805 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:18:14,806 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-04-14 01:18:14,806 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 1 more)] === [2025-04-14 01:18:14,806 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:18:14,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1530210398, now seen corresponding path program 9 times [2025-04-14 01:18:14,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:18:14,806 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369407226] [2025-04-14 01:18:14,806 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 01:18:14,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:18:14,811 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 2 equivalence classes. [2025-04-14 01:18:14,816 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 19 of 20 statements. [2025-04-14 01:18:14,816 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-14 01:18:14,816 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:18:15,103 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 01:18:15,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:18:15,104 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369407226] [2025-04-14 01:18:15,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369407226] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:18:15,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:18:15,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-04-14 01:18:15,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103737949] [2025-04-14 01:18:15,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:18:15,104 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-14 01:18:15,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:18:15,104 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-14 01:18:15,104 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2025-04-14 01:18:15,105 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 32 [2025-04-14 01:18:15,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 837 transitions, 9573 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 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 01:18:15,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:18:15,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 32 [2025-04-14 01:18:15,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:18:15,929 INFO L116 PetriNetUnfolderBase]: 3541/5397 cut-off events. [2025-04-14 01:18:15,929 INFO L117 PetriNetUnfolderBase]: For 17339/17339 co-relation queries the response was YES. [2025-04-14 01:18:15,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31214 conditions, 5397 events. 3541/5397 cut-off events. For 17339/17339 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 30266 event pairs, 301 based on Foata normal form. 2/4825 useless extension candidates. Maximal degree in co-relation 31017. Up to 5086 conditions per place. [2025-04-14 01:18:15,969 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 747 selfloop transitions, 130 changer transitions 4/881 dead transitions. [2025-04-14 01:18:15,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 881 transitions, 11710 flow [2025-04-14 01:18:15,970 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-04-14 01:18:15,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-04-14 01:18:15,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2025-04-14 01:18:15,970 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2025-04-14 01:18:15,970 INFO L175 Difference]: Start difference. First operand has 260 places, 837 transitions, 9573 flow. Second operand 11 states and 115 transitions. [2025-04-14 01:18:15,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 881 transitions, 11710 flow [2025-04-14 01:18:16,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 881 transitions, 11628 flow, removed 22 selfloop flow, removed 2 redundant places. [2025-04-14 01:18:16,226 INFO L231 Difference]: Finished difference. Result has 273 places, 856 transitions, 10138 flow [2025-04-14 01:18:16,227 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9491, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=837, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=709, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10138, PETRI_PLACES=273, PETRI_TRANSITIONS=856} [2025-04-14 01:18:16,227 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 242 predicate places. [2025-04-14 01:18:16,227 INFO L485 AbstractCegarLoop]: Abstraction has has 273 places, 856 transitions, 10138 flow [2025-04-14 01:18:16,227 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 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 01:18:16,228 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:18:16,228 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:18:16,228 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-04-14 01:18:16,228 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 1 more)] === [2025-04-14 01:18:16,228 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:18:16,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1277014000, now seen corresponding path program 10 times [2025-04-14 01:18:16,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:18:16,228 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048883467] [2025-04-14 01:18:16,228 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 01:18:16,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:18:16,233 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-04-14 01:18:16,241 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-14 01:18:16,241 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-14 01:18:16,241 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:18:16,541 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 01:18:16,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:18:16,542 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048883467] [2025-04-14 01:18:16,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048883467] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:18:16,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:18:16,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-04-14 01:18:16,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987107135] [2025-04-14 01:18:16,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:18:16,542 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-14 01:18:16,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:18:16,543 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-14 01:18:16,543 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2025-04-14 01:18:16,543 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 32 [2025-04-14 01:18:16,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 856 transitions, 10138 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 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 01:18:16,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:18:16,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 32 [2025-04-14 01:18:16,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:18:17,536 INFO L116 PetriNetUnfolderBase]: 3763/5712 cut-off events. [2025-04-14 01:18:17,537 INFO L117 PetriNetUnfolderBase]: For 20326/20326 co-relation queries the response was YES. [2025-04-14 01:18:17,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33736 conditions, 5712 events. 3763/5712 cut-off events. For 20326/20326 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 32199 event pairs, 267 based on Foata normal form. 2/5075 useless extension candidates. Maximal degree in co-relation 33529. Up to 4989 conditions per place. [2025-04-14 01:18:17,573 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 676 selfloop transitions, 257 changer transitions 5/938 dead transitions. [2025-04-14 01:18:17,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 938 transitions, 12770 flow [2025-04-14 01:18:17,573 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-04-14 01:18:17,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-04-14 01:18:17,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2025-04-14 01:18:17,574 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2025-04-14 01:18:17,574 INFO L175 Difference]: Start difference. First operand has 273 places, 856 transitions, 10138 flow. Second operand 11 states and 129 transitions. [2025-04-14 01:18:17,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 938 transitions, 12770 flow [2025-04-14 01:18:17,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 938 transitions, 12576 flow, removed 45 selfloop flow, removed 3 redundant places. [2025-04-14 01:18:17,882 INFO L231 Difference]: Finished difference. Result has 283 places, 895 transitions, 11111 flow [2025-04-14 01:18:17,883 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=9944, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=856, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=224, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=609, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11111, PETRI_PLACES=283, PETRI_TRANSITIONS=895} [2025-04-14 01:18:17,884 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 252 predicate places. [2025-04-14 01:18:17,884 INFO L485 AbstractCegarLoop]: Abstraction has has 283 places, 895 transitions, 11111 flow [2025-04-14 01:18:17,884 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 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 01:18:17,884 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:18:17,884 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:18:17,884 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-04-14 01:18:17,884 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 1 more)] === [2025-04-14 01:18:17,884 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:18:17,885 INFO L85 PathProgramCache]: Analyzing trace with hash 155392458, now seen corresponding path program 11 times [2025-04-14 01:18:17,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:18:17,885 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062565728] [2025-04-14 01:18:17,885 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 01:18:17,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:18:17,890 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-14 01:18:17,897 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-14 01:18:17,897 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:18:17,897 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:18:18,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:18:18,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:18:18,191 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062565728] [2025-04-14 01:18:18,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062565728] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:18:18,191 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143022744] [2025-04-14 01:18:18,191 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 01:18:18,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:18:18,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:18:18,193 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:18:18,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-04-14 01:18:18,231 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-14 01:18:18,246 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-14 01:18:18,246 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:18:18,246 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:18:18,249 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-04-14 01:18:18,251 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:18:18,268 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-14 01:18:18,364 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-14 01:18:18,364 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 39 [2025-04-14 01:18:18,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:18:18,520 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:18:19,035 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 57 [2025-04-14 01:18:19,038 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 71 [2025-04-14 01:18:19,072 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 39 [2025-04-14 01:18:19,074 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 50 [2025-04-14 01:18:19,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:18:19,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143022744] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 01:18:19,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 01:18:19,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 23 [2025-04-14 01:18:19,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898717335] [2025-04-14 01:18:19,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 01:18:19,080 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-04-14 01:18:19,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:18:19,081 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-04-14 01:18:19,081 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=474, Unknown=0, NotChecked=0, Total=600 [2025-04-14 01:18:19,081 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 32 [2025-04-14 01:18:19,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 895 transitions, 11111 flow. Second operand has 25 states, 25 states have (on average 5.24) internal successors, (131), 25 states have internal predecessors, (131), 0 states have call successors, (0), 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 01:18:19,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:18:19,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 32 [2025-04-14 01:18:19,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:18:22,968 INFO L116 PetriNetUnfolderBase]: 5204/7884 cut-off events. [2025-04-14 01:18:22,969 INFO L117 PetriNetUnfolderBase]: For 29932/29932 co-relation queries the response was YES. [2025-04-14 01:18:22,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48643 conditions, 7884 events. 5204/7884 cut-off events. For 29932/29932 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 46996 event pairs, 130 based on Foata normal form. 2/7070 useless extension candidates. Maximal degree in co-relation 48402. Up to 3209 conditions per place. [2025-04-14 01:18:23,025 INFO L140 encePairwiseOnDemand]: 16/32 looper letters, 371 selfloop transitions, 1174 changer transitions 1/1546 dead transitions. [2025-04-14 01:18:23,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 1546 transitions, 20558 flow [2025-04-14 01:18:23,026 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2025-04-14 01:18:23,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2025-04-14 01:18:23,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 629 transitions. [2025-04-14 01:18:23,028 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.32760416666666664 [2025-04-14 01:18:23,028 INFO L175 Difference]: Start difference. First operand has 283 places, 895 transitions, 11111 flow. Second operand 60 states and 629 transitions. [2025-04-14 01:18:23,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 1546 transitions, 20558 flow [2025-04-14 01:18:23,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 1546 transitions, 20105 flow, removed 85 selfloop flow, removed 6 redundant places. [2025-04-14 01:18:23,641 INFO L231 Difference]: Finished difference. Result has 353 places, 1369 transitions, 19420 flow [2025-04-14 01:18:23,642 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=10723, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=895, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=728, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=19420, PETRI_PLACES=353, PETRI_TRANSITIONS=1369} [2025-04-14 01:18:23,642 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 322 predicate places. [2025-04-14 01:18:23,642 INFO L485 AbstractCegarLoop]: Abstraction has has 353 places, 1369 transitions, 19420 flow [2025-04-14 01:18:23,643 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.24) internal successors, (131), 25 states have internal predecessors, (131), 0 states have call successors, (0), 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 01:18:23,643 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:18:23,643 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:18:23,649 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-04-14 01:18:23,843 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:18:23,843 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 1 more)] === [2025-04-14 01:18:23,844 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:18:23,844 INFO L85 PathProgramCache]: Analyzing trace with hash -437276456, now seen corresponding path program 12 times [2025-04-14 01:18:23,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:18:23,844 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512430903] [2025-04-14 01:18:23,844 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-14 01:18:23,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:18:23,848 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 2 equivalence classes. [2025-04-14 01:18:23,851 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 19 of 20 statements. [2025-04-14 01:18:23,851 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-04-14 01:18:23,851 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:18:24,069 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 01:18:24,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:18:24,070 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512430903] [2025-04-14 01:18:24,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512430903] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:18:24,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:18:24,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-04-14 01:18:24,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474680660] [2025-04-14 01:18:24,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:18:24,070 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-14 01:18:24,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:18:24,070 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-14 01:18:24,071 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2025-04-14 01:18:24,071 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 32 [2025-04-14 01:18:24,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 1369 transitions, 19420 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 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 01:18:24,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:18:24,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 32 [2025-04-14 01:18:24,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:18:25,808 INFO L116 PetriNetUnfolderBase]: 5207/7894 cut-off events. [2025-04-14 01:18:25,808 INFO L117 PetriNetUnfolderBase]: For 38493/38493 co-relation queries the response was YES. [2025-04-14 01:18:25,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55593 conditions, 7894 events. 5207/7894 cut-off events. For 38493/38493 co-relation queries the response was YES. Maximal size of possible extension queue 654. Compared 46984 event pairs, 419 based on Foata normal form. 2/7112 useless extension candidates. Maximal degree in co-relation 55352. Up to 7546 conditions per place. [2025-04-14 01:18:25,865 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 1290 selfloop transitions, 136 changer transitions 5/1431 dead transitions. [2025-04-14 01:18:25,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 1431 transitions, 23039 flow [2025-04-14 01:18:25,865 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-04-14 01:18:25,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-04-14 01:18:25,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 117 transitions. [2025-04-14 01:18:25,866 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.3046875 [2025-04-14 01:18:25,866 INFO L175 Difference]: Start difference. First operand has 353 places, 1369 transitions, 19420 flow. Second operand 12 states and 117 transitions. [2025-04-14 01:18:25,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 1431 transitions, 23039 flow [2025-04-14 01:18:26,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 1431 transitions, 22000 flow, removed 255 selfloop flow, removed 19 redundant places. [2025-04-14 01:18:26,763 INFO L231 Difference]: Finished difference. Result has 350 places, 1396 transitions, 19331 flow [2025-04-14 01:18:26,763 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=18417, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=19331, PETRI_PLACES=350, PETRI_TRANSITIONS=1396} [2025-04-14 01:18:26,764 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 319 predicate places. [2025-04-14 01:18:26,764 INFO L485 AbstractCegarLoop]: Abstraction has has 350 places, 1396 transitions, 19331 flow [2025-04-14 01:18:26,764 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 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 01:18:26,764 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:18:26,764 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:18:26,764 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-04-14 01:18:26,764 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:18:26,764 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:18:26,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1636809952, now seen corresponding path program 13 times [2025-04-14 01:18:26,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:18:26,764 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815453996] [2025-04-14 01:18:26,764 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-14 01:18:26,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:18:26,768 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-14 01:18:26,775 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-14 01:18:26,775 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:18:26,775 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:18:27,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:18:27,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:18:27,114 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815453996] [2025-04-14 01:18:27,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815453996] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:18:27,114 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449915308] [2025-04-14 01:18:27,114 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-14 01:18:27,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:18:27,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:18:27,118 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:18:27,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-04-14 01:18:27,157 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-14 01:18:27,174 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-14 01:18:27,174 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:18:27,174 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:18:27,175 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-04-14 01:18:27,176 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:18:27,195 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-14 01:18:27,324 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 31 [2025-04-14 01:18:27,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:18:27,432 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:18:27,919 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 57 [2025-04-14 01:18:27,921 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 71 [2025-04-14 01:18:27,947 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 39 [2025-04-14 01:18:27,949 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 50 [2025-04-14 01:18:27,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:18:27,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449915308] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 01:18:27,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 01:18:27,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 7] total 24 [2025-04-14 01:18:27,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338236382] [2025-04-14 01:18:27,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 01:18:27,954 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-04-14 01:18:27,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:18:27,954 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-04-14 01:18:27,954 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2025-04-14 01:18:27,954 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 32 [2025-04-14 01:18:27,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 1396 transitions, 19331 flow. Second operand has 26 states, 26 states have (on average 5.153846153846154) internal successors, (134), 26 states have internal predecessors, (134), 0 states have call successors, (0), 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 01:18:27,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:18:27,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 32 [2025-04-14 01:18:27,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:18:30,685 INFO L116 PetriNetUnfolderBase]: 6038/9109 cut-off events. [2025-04-14 01:18:30,685 INFO L117 PetriNetUnfolderBase]: For 39606/39606 co-relation queries the response was YES. [2025-04-14 01:18:30,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62051 conditions, 9109 events. 6038/9109 cut-off events. For 39606/39606 co-relation queries the response was YES. Maximal size of possible extension queue 740. Compared 55231 event pairs, 306 based on Foata normal form. 1/8157 useless extension candidates. Maximal degree in co-relation 61811. Up to 6873 conditions per place. [2025-04-14 01:18:30,758 INFO L140 encePairwiseOnDemand]: 16/32 looper letters, 1071 selfloop transitions, 626 changer transitions 1/1698 dead transitions. [2025-04-14 01:18:30,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 1698 transitions, 26347 flow [2025-04-14 01:18:30,758 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-04-14 01:18:30,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2025-04-14 01:18:30,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 226 transitions. [2025-04-14 01:18:30,759 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.2942708333333333 [2025-04-14 01:18:30,759 INFO L175 Difference]: Start difference. First operand has 350 places, 1396 transitions, 19331 flow. Second operand 24 states and 226 transitions. [2025-04-14 01:18:30,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 1698 transitions, 26347 flow [2025-04-14 01:18:31,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 1698 transitions, 25888 flow, removed 84 selfloop flow, removed 7 redundant places. [2025-04-14 01:18:31,725 INFO L231 Difference]: Finished difference. Result has 374 places, 1603 transitions, 23901 flow [2025-04-14 01:18:31,726 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=18952, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=428, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=835, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=23901, PETRI_PLACES=374, PETRI_TRANSITIONS=1603} [2025-04-14 01:18:31,726 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 343 predicate places. [2025-04-14 01:18:31,726 INFO L485 AbstractCegarLoop]: Abstraction has has 374 places, 1603 transitions, 23901 flow [2025-04-14 01:18:31,727 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.153846153846154) internal successors, (134), 26 states have internal predecessors, (134), 0 states have call successors, (0), 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 01:18:31,727 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:18:31,727 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:18:31,733 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-04-14 01:18:31,931 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-04-14 01:18:31,931 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:18:31,931 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:18:31,931 INFO L85 PathProgramCache]: Analyzing trace with hash -931705222, now seen corresponding path program 14 times [2025-04-14 01:18:31,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:18:31,931 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768873960] [2025-04-14 01:18:31,931 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 01:18:31,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:18:31,935 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-14 01:18:31,939 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 19 of 20 statements. [2025-04-14 01:18:31,939 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-14 01:18:31,939 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:18:32,125 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 01:18:32,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:18:32,125 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768873960] [2025-04-14 01:18:32,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768873960] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:18:32,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:18:32,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-04-14 01:18:32,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25491535] [2025-04-14 01:18:32,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:18:32,126 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-14 01:18:32,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:18:32,126 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-14 01:18:32,126 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-04-14 01:18:32,126 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 32 [2025-04-14 01:18:32,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 1603 transitions, 23901 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 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 01:18:32,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:18:32,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 32 [2025-04-14 01:18:32,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:18:34,180 INFO L116 PetriNetUnfolderBase]: 6111/9253 cut-off events. [2025-04-14 01:18:34,181 INFO L117 PetriNetUnfolderBase]: For 47577/47577 co-relation queries the response was YES. [2025-04-14 01:18:34,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68487 conditions, 9253 events. 6111/9253 cut-off events. For 47577/47577 co-relation queries the response was YES. Maximal size of possible extension queue 759. Compared 56627 event pairs, 460 based on Foata normal form. 2/8288 useless extension candidates. Maximal degree in co-relation 68231. Up to 8768 conditions per place. [2025-04-14 01:18:34,280 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 1472 selfloop transitions, 187 changer transitions 1/1660 dead transitions. [2025-04-14 01:18:34,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 1660 transitions, 27731 flow [2025-04-14 01:18:34,280 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-04-14 01:18:34,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-04-14 01:18:34,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 134 transitions. [2025-04-14 01:18:34,281 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.29910714285714285 [2025-04-14 01:18:34,281 INFO L175 Difference]: Start difference. First operand has 374 places, 1603 transitions, 23901 flow. Second operand 14 states and 134 transitions. [2025-04-14 01:18:34,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 1660 transitions, 27731 flow [2025-04-14 01:18:35,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 1660 transitions, 26991 flow, removed 225 selfloop flow, removed 7 redundant places. [2025-04-14 01:18:35,650 INFO L231 Difference]: Finished difference. Result has 385 places, 1630 transitions, 24040 flow [2025-04-14 01:18:35,651 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=23193, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1603, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=24040, PETRI_PLACES=385, PETRI_TRANSITIONS=1630} [2025-04-14 01:18:35,651 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 354 predicate places. [2025-04-14 01:18:35,651 INFO L485 AbstractCegarLoop]: Abstraction has has 385 places, 1630 transitions, 24040 flow [2025-04-14 01:18:35,652 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 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 01:18:35,652 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:18:35,652 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:18:35,652 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-04-14 01:18:35,652 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:18:35,652 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:18:35,652 INFO L85 PathProgramCache]: Analyzing trace with hash 954119838, now seen corresponding path program 15 times [2025-04-14 01:18:35,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:18:35,652 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559771010] [2025-04-14 01:18:35,652 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 01:18:35,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:18:35,656 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 2 equivalence classes. [2025-04-14 01:18:35,659 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 19 of 20 statements. [2025-04-14 01:18:35,659 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-14 01:18:35,659 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:18:35,859 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 01:18:35,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:18:35,859 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559771010] [2025-04-14 01:18:35,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559771010] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:18:35,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:18:35,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-04-14 01:18:35,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111430021] [2025-04-14 01:18:35,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:18:35,860 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-14 01:18:35,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:18:35,861 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-14 01:18:35,861 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-04-14 01:18:35,861 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 32 [2025-04-14 01:18:35,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 1630 transitions, 24040 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 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 01:18:35,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:18:35,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 32 [2025-04-14 01:18:35,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:18:37,904 INFO L116 PetriNetUnfolderBase]: 6116/9271 cut-off events. [2025-04-14 01:18:37,904 INFO L117 PetriNetUnfolderBase]: For 47279/47279 co-relation queries the response was YES. [2025-04-14 01:18:37,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68605 conditions, 9271 events. 6116/9271 cut-off events. For 47279/47279 co-relation queries the response was YES. Maximal size of possible extension queue 768. Compared 56772 event pairs, 473 based on Foata normal form. 1/8303 useless extension candidates. Maximal degree in co-relation 68337. Up to 8943 conditions per place. [2025-04-14 01:18:37,986 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 1498 selfloop transitions, 162 changer transitions 4/1664 dead transitions. [2025-04-14 01:18:37,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 1664 transitions, 27568 flow [2025-04-14 01:18:37,987 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-04-14 01:18:37,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-04-14 01:18:37,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 127 transitions. [2025-04-14 01:18:37,987 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.28348214285714285 [2025-04-14 01:18:37,987 INFO L175 Difference]: Start difference. First operand has 385 places, 1630 transitions, 24040 flow. Second operand 14 states and 127 transitions. [2025-04-14 01:18:37,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 1664 transitions, 27568 flow [2025-04-14 01:18:39,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 1664 transitions, 27235 flow, removed 64 selfloop flow, removed 8 redundant places. [2025-04-14 01:18:39,259 INFO L231 Difference]: Finished difference. Result has 394 places, 1637 transitions, 24176 flow [2025-04-14 01:18:39,260 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=23719, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=24176, PETRI_PLACES=394, PETRI_TRANSITIONS=1637} [2025-04-14 01:18:39,261 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 363 predicate places. [2025-04-14 01:18:39,261 INFO L485 AbstractCegarLoop]: Abstraction has has 394 places, 1637 transitions, 24176 flow [2025-04-14 01:18:39,261 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 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 01:18:39,261 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:18:39,261 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:18:39,262 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-04-14 01:18:39,262 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:18:39,262 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:18:39,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1509559172, now seen corresponding path program 16 times [2025-04-14 01:18:39,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:18:39,262 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248912102] [2025-04-14 01:18:39,263 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 01:18:39,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:18:39,268 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-04-14 01:18:39,274 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-14 01:18:39,274 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-14 01:18:39,274 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:18:39,551 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 01:18:39,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:18:39,551 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248912102] [2025-04-14 01:18:39,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248912102] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:18:39,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:18:39,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-04-14 01:18:39,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050237432] [2025-04-14 01:18:39,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:18:39,552 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-04-14 01:18:39,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:18:39,552 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-04-14 01:18:39,552 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-04-14 01:18:39,552 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 32 [2025-04-14 01:18:39,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 1637 transitions, 24176 flow. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:18:39,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:18:39,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 32 [2025-04-14 01:18:39,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:18:41,712 INFO L116 PetriNetUnfolderBase]: 6518/9827 cut-off events. [2025-04-14 01:18:41,713 INFO L117 PetriNetUnfolderBase]: For 51789/51789 co-relation queries the response was YES. [2025-04-14 01:18:41,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73144 conditions, 9827 events. 6518/9827 cut-off events. For 51789/51789 co-relation queries the response was YES. Maximal size of possible extension queue 805. Compared 60059 event pairs, 476 based on Foata normal form. 1/8733 useless extension candidates. Maximal degree in co-relation 72868. Up to 9162 conditions per place. [2025-04-14 01:18:41,808 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 1469 selfloop transitions, 337 changer transitions 6/1812 dead transitions. [2025-04-14 01:18:41,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 1812 transitions, 30113 flow [2025-04-14 01:18:41,808 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-04-14 01:18:41,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-04-14 01:18:41,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2025-04-14 01:18:41,808 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.3307291666666667 [2025-04-14 01:18:41,809 INFO L175 Difference]: Start difference. First operand has 394 places, 1637 transitions, 24176 flow. Second operand 12 states and 127 transitions. [2025-04-14 01:18:41,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 1812 transitions, 30113 flow [2025-04-14 01:18:43,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 1812 transitions, 29741 flow, removed 28 selfloop flow, removed 9 redundant places. [2025-04-14 01:18:43,347 INFO L231 Difference]: Finished difference. Result has 401 places, 1773 transitions, 26902 flow [2025-04-14 01:18:43,349 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=23810, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=221, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=26902, PETRI_PLACES=401, PETRI_TRANSITIONS=1773} [2025-04-14 01:18:43,349 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 370 predicate places. [2025-04-14 01:18:43,349 INFO L485 AbstractCegarLoop]: Abstraction has has 401 places, 1773 transitions, 26902 flow [2025-04-14 01:18:43,349 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:18:43,349 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:18:43,350 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:18:43,350 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-04-14 01:18:43,350 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:18:43,350 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:18:43,350 INFO L85 PathProgramCache]: Analyzing trace with hash 748826934, now seen corresponding path program 17 times [2025-04-14 01:18:43,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:18:43,350 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699870327] [2025-04-14 01:18:43,350 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 01:18:43,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:18:43,354 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-14 01:18:43,357 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-14 01:18:43,357 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:18:43,357 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:18:43,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:18:43,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:18:43,724 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699870327] [2025-04-14 01:18:43,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699870327] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:18:43,724 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565522796] [2025-04-14 01:18:43,724 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 01:18:43,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:18:43,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:18:43,726 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:18:43,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-04-14 01:18:43,765 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-14 01:18:43,777 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-14 01:18:43,777 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:18:43,777 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:18:43,778 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-04-14 01:18:43,779 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:18:43,795 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-14 01:18:43,947 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 31 [2025-04-14 01:18:43,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:18:43,983 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:18:44,358 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 57 [2025-04-14 01:18:44,360 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 71 [2025-04-14 01:18:44,377 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 39 [2025-04-14 01:18:44,379 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 50 [2025-04-14 01:18:44,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:18:44,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565522796] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 01:18:44,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 01:18:44,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 23 [2025-04-14 01:18:44,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466835752] [2025-04-14 01:18:44,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 01:18:44,383 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-04-14 01:18:44,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:18:44,384 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-04-14 01:18:44,384 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2025-04-14 01:18:44,384 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 32 [2025-04-14 01:18:44,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 1773 transitions, 26902 flow. Second operand has 25 states, 25 states have (on average 5.24) internal successors, (131), 25 states have internal predecessors, (131), 0 states have call successors, (0), 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 01:18:44,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:18:44,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 32 [2025-04-14 01:18:44,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:18:49,086 INFO L116 PetriNetUnfolderBase]: 7599/11430 cut-off events. [2025-04-14 01:18:49,086 INFO L117 PetriNetUnfolderBase]: For 71010/71010 co-relation queries the response was YES. [2025-04-14 01:18:49,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88199 conditions, 11430 events. 7599/11430 cut-off events. For 71010/71010 co-relation queries the response was YES. Maximal size of possible extension queue 978. Compared 71596 event pairs, 133 based on Foata normal form. 6/10126 useless extension candidates. Maximal degree in co-relation 87937. Up to 4499 conditions per place. [2025-04-14 01:18:49,206 INFO L140 encePairwiseOnDemand]: 16/32 looper letters, 429 selfloop transitions, 1849 changer transitions 2/2280 dead transitions. [2025-04-14 01:18:49,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 2280 transitions, 38045 flow [2025-04-14 01:18:49,207 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2025-04-14 01:18:49,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2025-04-14 01:18:49,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 553 transitions. [2025-04-14 01:18:49,208 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.2929025423728814 [2025-04-14 01:18:49,208 INFO L175 Difference]: Start difference. First operand has 401 places, 1773 transitions, 26902 flow. Second operand 59 states and 553 transitions. [2025-04-14 01:18:49,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 2280 transitions, 38045 flow [2025-04-14 01:18:51,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 2280 transitions, 37506 flow, removed 187 selfloop flow, removed 4 redundant places. [2025-04-14 01:18:51,464 INFO L231 Difference]: Finished difference. Result has 464 places, 2163 transitions, 37192 flow [2025-04-14 01:18:51,465 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=26309, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1759, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1464, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=37192, PETRI_PLACES=464, PETRI_TRANSITIONS=2163} [2025-04-14 01:18:51,465 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 433 predicate places. [2025-04-14 01:18:51,465 INFO L485 AbstractCegarLoop]: Abstraction has has 464 places, 2163 transitions, 37192 flow [2025-04-14 01:18:51,466 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.24) internal successors, (131), 25 states have internal predecessors, (131), 0 states have call successors, (0), 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 01:18:51,466 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:18:51,466 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:18:51,472 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-04-14 01:18:51,666 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:18:51,666 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:18:51,667 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:18:51,667 INFO L85 PathProgramCache]: Analyzing trace with hash -504387158, now seen corresponding path program 18 times [2025-04-14 01:18:51,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:18:51,667 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338381553] [2025-04-14 01:18:51,667 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-14 01:18:51,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:18:51,670 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 2 equivalence classes. [2025-04-14 01:18:51,674 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 19 of 20 statements. [2025-04-14 01:18:51,674 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-04-14 01:18:51,674 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:18:51,858 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 01:18:51,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:18:51,858 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338381553] [2025-04-14 01:18:51,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338381553] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:18:51,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:18:51,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-04-14 01:18:51,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637846710] [2025-04-14 01:18:51,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:18:51,859 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-04-14 01:18:51,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:18:51,859 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-04-14 01:18:51,859 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-04-14 01:18:51,859 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 32 [2025-04-14 01:18:51,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 2163 transitions, 37192 flow. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:18:51,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:18:51,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 32 [2025-04-14 01:18:51,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:18:55,194 INFO L116 PetriNetUnfolderBase]: 7652/11524 cut-off events. [2025-04-14 01:18:55,194 INFO L117 PetriNetUnfolderBase]: For 90324/90324 co-relation queries the response was YES. [2025-04-14 01:18:55,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99466 conditions, 11524 events. 7652/11524 cut-off events. For 90324/90324 co-relation queries the response was YES. Maximal size of possible extension queue 992. Compared 72316 event pairs, 541 based on Foata normal form. 1/10199 useless extension candidates. Maximal degree in co-relation 99141. Up to 11171 conditions per place. [2025-04-14 01:18:55,312 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 2044 selfloop transitions, 153 changer transitions 1/2198 dead transitions. [2025-04-14 01:18:55,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 2198 transitions, 42018 flow [2025-04-14 01:18:55,312 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-14 01:18:55,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-04-14 01:18:55,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2025-04-14 01:18:55,313 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.315625 [2025-04-14 01:18:55,313 INFO L175 Difference]: Start difference. First operand has 464 places, 2163 transitions, 37192 flow. Second operand 10 states and 101 transitions. [2025-04-14 01:18:55,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 2198 transitions, 42018 flow [2025-04-14 01:18:58,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 2198 transitions, 40519 flow, removed 503 selfloop flow, removed 28 redundant places. [2025-04-14 01:18:58,432 INFO L231 Difference]: Finished difference. Result has 448 places, 2177 transitions, 36360 flow [2025-04-14 01:18:58,434 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=35717, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2010, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=36360, PETRI_PLACES=448, PETRI_TRANSITIONS=2177} [2025-04-14 01:18:58,434 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 417 predicate places. [2025-04-14 01:18:58,434 INFO L485 AbstractCegarLoop]: Abstraction has has 448 places, 2177 transitions, 36360 flow [2025-04-14 01:18:58,435 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:18:58,435 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:18:58,435 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:18:58,435 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-04-14 01:18:58,435 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:18:58,436 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:18:58,436 INFO L85 PathProgramCache]: Analyzing trace with hash -101523356, now seen corresponding path program 19 times [2025-04-14 01:18:58,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:18:58,436 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399479644] [2025-04-14 01:18:58,436 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-14 01:18:58,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:18:58,440 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-14 01:18:58,450 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-14 01:18:58,450 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:18:58,450 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:18:58,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:18:58,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:18:58,710 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399479644] [2025-04-14 01:18:58,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399479644] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:18:58,710 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575350911] [2025-04-14 01:18:58,710 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-14 01:18:58,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:18:58,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:18:58,712 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:18:58,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-04-14 01:18:58,753 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-14 01:18:58,768 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-14 01:18:58,768 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:18:58,768 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:18:58,769 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-04-14 01:18:58,770 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:18:58,790 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-14 01:18:58,940 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-14 01:18:58,940 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 39 [2025-04-14 01:18:59,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:18:59,020 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:18:59,456 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 57 [2025-04-14 01:18:59,458 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 71 [2025-04-14 01:18:59,481 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 39 [2025-04-14 01:18:59,483 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 50 [2025-04-14 01:18:59,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:18:59,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575350911] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 01:18:59,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 01:18:59,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 23 [2025-04-14 01:18:59,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219534088] [2025-04-14 01:18:59,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 01:18:59,488 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-04-14 01:18:59,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:18:59,488 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-04-14 01:18:59,488 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=474, Unknown=0, NotChecked=0, Total=600 [2025-04-14 01:18:59,489 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 32 [2025-04-14 01:18:59,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 2177 transitions, 36360 flow. Second operand has 25 states, 25 states have (on average 5.28) internal successors, (132), 25 states have internal predecessors, (132), 0 states have call successors, (0), 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 01:18:59,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:18:59,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 32 [2025-04-14 01:18:59,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:19:05,260 INFO L116 PetriNetUnfolderBase]: 9344/14092 cut-off events. [2025-04-14 01:19:05,260 INFO L117 PetriNetUnfolderBase]: For 102981/102981 co-relation queries the response was YES. [2025-04-14 01:19:05,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117771 conditions, 14092 events. 9344/14092 cut-off events. For 102981/102981 co-relation queries the response was YES. Maximal size of possible extension queue 1212. Compared 91666 event pairs, 358 based on Foata normal form. 1/12439 useless extension candidates. Maximal degree in co-relation 117385. Up to 8070 conditions per place. [2025-04-14 01:19:05,456 INFO L140 encePairwiseOnDemand]: 16/32 looper letters, 1100 selfloop transitions, 1578 changer transitions 1/2679 dead transitions. [2025-04-14 01:19:05,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 2679 transitions, 48865 flow [2025-04-14 01:19:05,457 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2025-04-14 01:19:05,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2025-04-14 01:19:05,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 474 transitions. [2025-04-14 01:19:05,458 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.3444767441860465 [2025-04-14 01:19:05,458 INFO L175 Difference]: Start difference. First operand has 448 places, 2177 transitions, 36360 flow. Second operand 43 states and 474 transitions. [2025-04-14 01:19:05,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 2679 transitions, 48865 flow [2025-04-14 01:19:09,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 2679 transitions, 48505 flow, removed 48 selfloop flow, removed 4 redundant places. [2025-04-14 01:19:09,058 INFO L231 Difference]: Finished difference. Result has 501 places, 2512 transitions, 46452 flow [2025-04-14 01:19:09,059 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=36037, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1289, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=804, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=46452, PETRI_PLACES=501, PETRI_TRANSITIONS=2512} [2025-04-14 01:19:09,060 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 470 predicate places. [2025-04-14 01:19:09,060 INFO L485 AbstractCegarLoop]: Abstraction has has 501 places, 2512 transitions, 46452 flow [2025-04-14 01:19:09,060 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.28) internal successors, (132), 25 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:19:09,060 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:19:09,060 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:19:09,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-04-14 01:19:09,260 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:19:09,261 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:19:09,261 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:19:09,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1459978504, now seen corresponding path program 20 times [2025-04-14 01:19:09,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:19:09,262 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062392424] [2025-04-14 01:19:09,262 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 01:19:09,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:19:09,267 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-04-14 01:19:09,363 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 19 of 21 statements. [2025-04-14 01:19:09,363 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-14 01:19:09,363 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:19:09,597 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-14 01:19:09,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:19:09,597 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062392424] [2025-04-14 01:19:09,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062392424] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:19:09,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:19:09,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-04-14 01:19:09,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616781231] [2025-04-14 01:19:09,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:19:09,597 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-14 01:19:09,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:19:09,598 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-14 01:19:09,598 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2025-04-14 01:19:09,598 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 32 [2025-04-14 01:19:09,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 2512 transitions, 46452 flow. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:19:09,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:19:09,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 32 [2025-04-14 01:19:09,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:19:14,335 INFO L116 PetriNetUnfolderBase]: 9725/14680 cut-off events. [2025-04-14 01:19:14,335 INFO L117 PetriNetUnfolderBase]: For 135095/135095 co-relation queries the response was YES. [2025-04-14 01:19:14,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134951 conditions, 14680 events. 9725/14680 cut-off events. For 135095/135095 co-relation queries the response was YES. Maximal size of possible extension queue 1202. Compared 95710 event pairs, 294 based on Foata normal form. 2/12929 useless extension candidates. Maximal degree in co-relation 134550. Up to 10797 conditions per place. [2025-04-14 01:19:14,496 INFO L140 encePairwiseOnDemand]: 18/32 looper letters, 1629 selfloop transitions, 1164 changer transitions 7/2800 dead transitions. [2025-04-14 01:19:14,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 517 places, 2800 transitions, 56759 flow [2025-04-14 01:19:14,497 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-04-14 01:19:14,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-04-14 01:19:14,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 208 transitions. [2025-04-14 01:19:14,497 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.38235294117647056 [2025-04-14 01:19:14,497 INFO L175 Difference]: Start difference. First operand has 501 places, 2512 transitions, 46452 flow. Second operand 17 states and 208 transitions. [2025-04-14 01:19:14,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 517 places, 2800 transitions, 56759 flow [2025-04-14 01:19:19,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 2800 transitions, 55833 flow, removed 215 selfloop flow, removed 14 redundant places. [2025-04-14 01:19:19,649 INFO L231 Difference]: Finished difference. Result has 507 places, 2670 transitions, 52466 flow [2025-04-14 01:19:19,651 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=45577, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1008, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=52466, PETRI_PLACES=507, PETRI_TRANSITIONS=2670} [2025-04-14 01:19:19,651 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 476 predicate places. [2025-04-14 01:19:19,651 INFO L485 AbstractCegarLoop]: Abstraction has has 507 places, 2670 transitions, 52466 flow [2025-04-14 01:19:19,652 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:19:19,652 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:19:19,652 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:19:19,652 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-04-14 01:19:19,652 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:19:19,652 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:19:19,653 INFO L85 PathProgramCache]: Analyzing trace with hash -729855768, now seen corresponding path program 21 times [2025-04-14 01:19:19,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:19:19,653 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503395000] [2025-04-14 01:19:19,653 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 01:19:19,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:19:19,660 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 2 equivalence classes. [2025-04-14 01:19:19,664 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 19 of 21 statements. [2025-04-14 01:19:19,664 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-14 01:19:19,664 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:19:19,854 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-14 01:19:19,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:19:19,854 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503395000] [2025-04-14 01:19:19,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503395000] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 01:19:19,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 01:19:19,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-04-14 01:19:19,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946449067] [2025-04-14 01:19:19,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:19:19,855 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-04-14 01:19:19,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:19:19,855 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-04-14 01:19:19,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2025-04-14 01:19:19,855 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 32 [2025-04-14 01:19:19,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 2670 transitions, 52466 flow. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:19:19,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:19:19,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 32 [2025-04-14 01:19:19,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:19:24,979 INFO L116 PetriNetUnfolderBase]: 9869/14939 cut-off events. [2025-04-14 01:19:24,979 INFO L117 PetriNetUnfolderBase]: For 166384/166384 co-relation queries the response was YES. [2025-04-14 01:19:25,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142868 conditions, 14939 events. 9869/14939 cut-off events. For 166384/166384 co-relation queries the response was YES. Maximal size of possible extension queue 1234. Compared 98127 event pairs, 416 based on Foata normal form. 1/13380 useless extension candidates. Maximal degree in co-relation 142556. Up to 13501 conditions per place. [2025-04-14 01:19:25,230 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 2319 selfloop transitions, 542 changer transitions 8/2869 dead transitions. [2025-04-14 01:19:25,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 2869 transitions, 61851 flow [2025-04-14 01:19:25,231 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-14 01:19:25,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-04-14 01:19:25,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2025-04-14 01:19:25,231 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.390625 [2025-04-14 01:19:25,231 INFO L175 Difference]: Start difference. First operand has 507 places, 2670 transitions, 52466 flow. Second operand 10 states and 125 transitions. [2025-04-14 01:19:25,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 2869 transitions, 61851 flow [2025-04-14 01:19:31,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 2869 transitions, 61582 flow, removed 63 selfloop flow, removed 3 redundant places. [2025-04-14 01:19:31,881 INFO L231 Difference]: Finished difference. Result has 517 places, 2814 transitions, 57018 flow [2025-04-14 01:19:31,883 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=52219, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2670, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=410, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=57018, PETRI_PLACES=517, PETRI_TRANSITIONS=2814} [2025-04-14 01:19:31,884 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 486 predicate places. [2025-04-14 01:19:31,884 INFO L485 AbstractCegarLoop]: Abstraction has has 517 places, 2814 transitions, 57018 flow [2025-04-14 01:19:31,884 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:19:31,884 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:19:31,884 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:19:31,885 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-04-14 01:19:31,885 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:19:31,885 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:19:31,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1209076670, now seen corresponding path program 22 times [2025-04-14 01:19:31,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:19:31,885 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429103813] [2025-04-14 01:19:31,885 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 01:19:31,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:19:31,893 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-04-14 01:19:31,896 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-14 01:19:31,896 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-14 01:19:31,896 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:19:31,933 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:19:31,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:19:31,933 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429103813] [2025-04-14 01:19:31,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429103813] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:19:31,933 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631154052] [2025-04-14 01:19:31,933 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 01:19:31,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:19:31,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:19:31,939 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:19:31,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-04-14 01:19:31,987 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-04-14 01:19:32,001 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-14 01:19:32,001 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-14 01:19:32,001 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:19:32,002 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-04-14 01:19:32,002 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:19:32,030 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:19:32,030 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:19:32,055 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:19:32,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631154052] provided 1 perfect and 1 imperfect interpolant sequences [2025-04-14 01:19:32,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-04-14 01:19:32,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2025-04-14 01:19:32,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149077556] [2025-04-14 01:19:32,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:19:32,056 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-14 01:19:32,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:19:32,056 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-14 01:19:32,056 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2025-04-14 01:19:32,056 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 32 [2025-04-14 01:19:32,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 2814 transitions, 57018 flow. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:19:32,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:19:32,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 32 [2025-04-14 01:19:32,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:19:37,967 INFO L116 PetriNetUnfolderBase]: 11179/16640 cut-off events. [2025-04-14 01:19:37,967 INFO L117 PetriNetUnfolderBase]: For 190623/190623 co-relation queries the response was YES. [2025-04-14 01:19:38,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159784 conditions, 16640 events. 11179/16640 cut-off events. For 190623/190623 co-relation queries the response was YES. Maximal size of possible extension queue 1232. Compared 106608 event pairs, 2646 based on Foata normal form. 108/15184 useless extension candidates. Maximal degree in co-relation 159515. Up to 9715 conditions per place. [2025-04-14 01:19:38,141 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 3082 selfloop transitions, 133 changer transitions 0/3215 dead transitions. [2025-04-14 01:19:38,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 3215 transitions, 70392 flow [2025-04-14 01:19:38,142 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-14 01:19:38,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-14 01:19:38,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 87 transitions. [2025-04-14 01:19:38,142 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.453125 [2025-04-14 01:19:38,142 INFO L175 Difference]: Start difference. First operand has 517 places, 2814 transitions, 57018 flow. Second operand 6 states and 87 transitions. [2025-04-14 01:19:38,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 3215 transitions, 70392 flow [2025-04-14 01:19:44,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 3215 transitions, 69643 flow, removed 141 selfloop flow, removed 6 redundant places. [2025-04-14 01:19:44,651 INFO L231 Difference]: Finished difference. Result has 518 places, 2654 transitions, 53082 flow [2025-04-14 01:19:44,652 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=51973, PETRI_DIFFERENCE_MINUEND_PLACES=511, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2624, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=53082, PETRI_PLACES=518, PETRI_TRANSITIONS=2654} [2025-04-14 01:19:44,653 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 487 predicate places. [2025-04-14 01:19:44,653 INFO L485 AbstractCegarLoop]: Abstraction has has 518 places, 2654 transitions, 53082 flow [2025-04-14 01:19:44,653 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:19:44,653 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:19:44,653 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:19:44,660 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-04-14 01:19:44,858 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2025-04-14 01:19:44,859 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:19:44,860 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:19:44,860 INFO L85 PathProgramCache]: Analyzing trace with hash -140635681, now seen corresponding path program 1 times [2025-04-14 01:19:44,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:19:44,860 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103438515] [2025-04-14 01:19:44,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:19:44,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:19:44,864 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-04-14 01:19:44,866 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-04-14 01:19:44,866 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:19:44,866 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:19:44,906 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:19:44,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:19:44,907 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103438515] [2025-04-14 01:19:44,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103438515] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:19:44,907 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288995310] [2025-04-14 01:19:44,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:19:44,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:19:44,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:19:44,909 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:19:44,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-04-14 01:19:44,955 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-04-14 01:19:44,970 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-04-14 01:19:44,970 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:19:44,970 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:19:44,971 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-14 01:19:44,975 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:19:45,004 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:19:45,005 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:19:45,036 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:19:45,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288995310] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 01:19:45,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 01:19:45,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-04-14 01:19:45,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759249962] [2025-04-14 01:19:45,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 01:19:45,036 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-04-14 01:19:45,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:19:45,037 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-04-14 01:19:45,037 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2025-04-14 01:19:45,037 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 32 [2025-04-14 01:19:45,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 518 places, 2654 transitions, 53082 flow. Second operand has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:19:45,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:19:45,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 32 [2025-04-14 01:19:45,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:19:49,545 INFO L116 PetriNetUnfolderBase]: 8360/12759 cut-off events. [2025-04-14 01:19:49,545 INFO L117 PetriNetUnfolderBase]: For 149938/149938 co-relation queries the response was YES. [2025-04-14 01:19:49,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121106 conditions, 12759 events. 8360/12759 cut-off events. For 149938/149938 co-relation queries the response was YES. Maximal size of possible extension queue 995. Compared 82783 event pairs, 2033 based on Foata normal form. 52/11875 useless extension candidates. Maximal degree in co-relation 120830. Up to 6925 conditions per place. [2025-04-14 01:19:49,676 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 2384 selfloop transitions, 145 changer transitions 48/2577 dead transitions. [2025-04-14 01:19:49,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 2577 transitions, 56585 flow [2025-04-14 01:19:49,677 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-14 01:19:49,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-14 01:19:49,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 84 transitions. [2025-04-14 01:19:49,679 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4375 [2025-04-14 01:19:49,679 INFO L175 Difference]: Start difference. First operand has 518 places, 2654 transitions, 53082 flow. Second operand 6 states and 84 transitions. [2025-04-14 01:19:49,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 2577 transitions, 56585 flow [2025-04-14 01:19:53,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 2577 transitions, 56560 flow, removed 4 selfloop flow, removed 5 redundant places. [2025-04-14 01:19:53,996 INFO L231 Difference]: Finished difference. Result has 506 places, 2278 transitions, 46412 flow [2025-04-14 01:19:53,998 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=46370, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=46412, PETRI_PLACES=506, PETRI_TRANSITIONS=2278} [2025-04-14 01:19:53,998 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 475 predicate places. [2025-04-14 01:19:53,998 INFO L485 AbstractCegarLoop]: Abstraction has has 506 places, 2278 transitions, 46412 flow [2025-04-14 01:19:53,999 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:19:53,999 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:19:53,999 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] [2025-04-14 01:19:54,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-04-14 01:19:54,199 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-04-14 01:19:54,199 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:19:54,200 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:19:54,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1655306413, now seen corresponding path program 1 times [2025-04-14 01:19:54,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:19:54,200 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524545324] [2025-04-14 01:19:54,200 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:19:54,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:19:54,205 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-04-14 01:19:54,207 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-04-14 01:19:54,208 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:19:54,208 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:19:54,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:19:54,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:19:54,247 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524545324] [2025-04-14 01:19:54,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524545324] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:19:54,248 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857057772] [2025-04-14 01:19:54,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:19:54,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:19:54,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:19:54,250 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:19:54,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-04-14 01:19:54,291 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-04-14 01:19:54,306 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-04-14 01:19:54,306 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:19:54,306 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:19:54,307 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-14 01:19:54,308 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:19:54,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:19:54,331 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:19:54,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:19:54,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857057772] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 01:19:54,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 01:19:54,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-04-14 01:19:54,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231473832] [2025-04-14 01:19:54,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 01:19:54,356 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-04-14 01:19:54,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:19:54,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-04-14 01:19:54,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-04-14 01:19:54,357 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 32 [2025-04-14 01:19:54,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 2278 transitions, 46412 flow. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:19:54,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:19:54,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 32 [2025-04-14 01:19:54,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:19:57,359 INFO L116 PetriNetUnfolderBase]: 5851/8952 cut-off events. [2025-04-14 01:19:57,359 INFO L117 PetriNetUnfolderBase]: For 120929/120929 co-relation queries the response was YES. [2025-04-14 01:19:57,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85266 conditions, 8952 events. 5851/8952 cut-off events. For 120929/120929 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 54450 event pairs, 1351 based on Foata normal form. 207/8426 useless extension candidates. Maximal degree in co-relation 85119. Up to 5353 conditions per place. [2025-04-14 01:19:57,455 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 1738 selfloop transitions, 37 changer transitions 29/1804 dead transitions. [2025-04-14 01:19:57,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 1804 transitions, 39362 flow [2025-04-14 01:19:57,456 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-14 01:19:57,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-14 01:19:57,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 81 transitions. [2025-04-14 01:19:57,456 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.421875 [2025-04-14 01:19:57,456 INFO L175 Difference]: Start difference. First operand has 506 places, 2278 transitions, 46412 flow. Second operand 6 states and 81 transitions. [2025-04-14 01:19:57,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 1804 transitions, 39362 flow [2025-04-14 01:19:59,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 1804 transitions, 37794 flow, removed 374 selfloop flow, removed 28 redundant places. [2025-04-14 01:19:59,579 INFO L231 Difference]: Finished difference. Result has 439 places, 1631 transitions, 31644 flow [2025-04-14 01:19:59,580 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=31540, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1631, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1594, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=31644, PETRI_PLACES=439, PETRI_TRANSITIONS=1631} [2025-04-14 01:19:59,580 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 408 predicate places. [2025-04-14 01:19:59,580 INFO L485 AbstractCegarLoop]: Abstraction has has 439 places, 1631 transitions, 31644 flow [2025-04-14 01:19:59,580 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:19:59,580 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:19:59,580 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:19:59,586 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-04-14 01:19:59,781 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2025-04-14 01:19:59,781 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:19:59,782 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:19:59,782 INFO L85 PathProgramCache]: Analyzing trace with hash 2104132003, now seen corresponding path program 1 times [2025-04-14 01:19:59,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:19:59,782 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851478757] [2025-04-14 01:19:59,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:19:59,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:19:59,787 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-04-14 01:19:59,789 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-04-14 01:19:59,789 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:19:59,789 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:19:59,821 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:19:59,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:19:59,822 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851478757] [2025-04-14 01:19:59,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851478757] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:19:59,822 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259545734] [2025-04-14 01:19:59,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:19:59,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:19:59,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:19:59,824 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:19:59,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-04-14 01:19:59,863 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-04-14 01:19:59,876 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-04-14 01:19:59,876 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:19:59,876 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:19:59,877 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-04-14 01:19:59,878 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:19:59,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:19:59,935 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:19:59,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:19:59,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259545734] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 01:19:59,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 01:19:59,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-04-14 01:19:59,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206603723] [2025-04-14 01:19:59,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 01:19:59,972 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-04-14 01:19:59,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:19:59,972 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-04-14 01:19:59,972 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2025-04-14 01:19:59,972 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 32 [2025-04-14 01:19:59,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 1631 transitions, 31644 flow. Second operand has 12 states, 12 states have (on average 6.583333333333333) internal successors, (79), 12 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:19:59,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:19:59,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 32 [2025-04-14 01:19:59,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:20:01,939 INFO L116 PetriNetUnfolderBase]: 5210/7984 cut-off events. [2025-04-14 01:20:01,939 INFO L117 PetriNetUnfolderBase]: For 88524/88524 co-relation queries the response was YES. [2025-04-14 01:20:01,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74803 conditions, 7984 events. 5210/7984 cut-off events. For 88524/88524 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 47658 event pairs, 1364 based on Foata normal form. 187/7512 useless extension candidates. Maximal degree in co-relation 74672. Up to 7060 conditions per place. [2025-04-14 01:20:02,026 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 1386 selfloop transitions, 3 changer transitions 175/1564 dead transitions. [2025-04-14 01:20:02,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 1564 transitions, 33762 flow [2025-04-14 01:20:02,026 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-14 01:20:02,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-14 01:20:02,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 71 transitions. [2025-04-14 01:20:02,026 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.3697916666666667 [2025-04-14 01:20:02,027 INFO L175 Difference]: Start difference. First operand has 439 places, 1631 transitions, 31644 flow. Second operand 6 states and 71 transitions. [2025-04-14 01:20:02,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 1564 transitions, 33762 flow [2025-04-14 01:20:03,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 1564 transitions, 33552 flow, removed 46 selfloop flow, removed 9 redundant places. [2025-04-14 01:20:03,660 INFO L231 Difference]: Finished difference. Result has 430 places, 1389 transitions, 27332 flow [2025-04-14 01:20:03,660 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=30128, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1537, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=27332, PETRI_PLACES=430, PETRI_TRANSITIONS=1389} [2025-04-14 01:20:03,661 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 399 predicate places. [2025-04-14 01:20:03,661 INFO L485 AbstractCegarLoop]: Abstraction has has 430 places, 1389 transitions, 27332 flow [2025-04-14 01:20:03,661 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.583333333333333) internal successors, (79), 12 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:20:03,661 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:20:03,661 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:20:03,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-04-14 01:20:03,861 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-04-14 01:20:03,861 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:20:03,862 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:20:03,862 INFO L85 PathProgramCache]: Analyzing trace with hash -788958517, now seen corresponding path program 2 times [2025-04-14 01:20:03,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:20:03,862 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693774638] [2025-04-14 01:20:03,862 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 01:20:03,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:20:03,866 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-04-14 01:20:03,868 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-04-14 01:20:03,868 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:20:03,868 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:20:03,897 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-14 01:20:03,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:20:03,897 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693774638] [2025-04-14 01:20:03,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693774638] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:20:03,897 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327096022] [2025-04-14 01:20:03,897 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 01:20:03,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:20:03,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:20:03,899 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:20:03,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-04-14 01:20:03,936 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-04-14 01:20:03,950 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-04-14 01:20:03,951 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:20:03,951 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:20:03,951 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-14 01:20:03,952 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:20:04,000 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-14 01:20:04,000 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:20:04,041 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-14 01:20:04,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327096022] provided 1 perfect and 1 imperfect interpolant sequences [2025-04-14 01:20:04,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-04-14 01:20:04,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2025-04-14 01:20:04,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395169581] [2025-04-14 01:20:04,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:20:04,042 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-14 01:20:04,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:20:04,042 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-14 01:20:04,042 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2025-04-14 01:20:04,042 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 32 [2025-04-14 01:20:04,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 1389 transitions, 27332 flow. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:20:04,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:20:04,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 32 [2025-04-14 01:20:04,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:20:05,768 INFO L116 PetriNetUnfolderBase]: 4769/6967 cut-off events. [2025-04-14 01:20:05,769 INFO L117 PetriNetUnfolderBase]: For 67369/67369 co-relation queries the response was YES. [2025-04-14 01:20:05,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66071 conditions, 6967 events. 4769/6967 cut-off events. For 67369/67369 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 37538 event pairs, 915 based on Foata normal form. 34/6352 useless extension candidates. Maximal degree in co-relation 65944. Up to 5352 conditions per place. [2025-04-14 01:20:05,855 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 1393 selfloop transitions, 71 changer transitions 0/1464 dead transitions. [2025-04-14 01:20:05,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 1464 transitions, 31439 flow [2025-04-14 01:20:05,856 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-14 01:20:05,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-14 01:20:05,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2025-04-14 01:20:05,859 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.33035714285714285 [2025-04-14 01:20:05,859 INFO L175 Difference]: Start difference. First operand has 430 places, 1389 transitions, 27332 flow. Second operand 7 states and 74 transitions. [2025-04-14 01:20:05,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 1464 transitions, 31439 flow [2025-04-14 01:20:07,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 1464 transitions, 30653 flow, removed 226 selfloop flow, removed 27 redundant places. [2025-04-14 01:20:07,059 INFO L231 Difference]: Finished difference. Result has 365 places, 1368 transitions, 26531 flow [2025-04-14 01:20:07,060 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=26076, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=26531, PETRI_PLACES=365, PETRI_TRANSITIONS=1368} [2025-04-14 01:20:07,061 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 334 predicate places. [2025-04-14 01:20:07,061 INFO L485 AbstractCegarLoop]: Abstraction has has 365 places, 1368 transitions, 26531 flow [2025-04-14 01:20:07,061 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:20:07,061 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:20:07,061 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:20:07,067 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-04-14 01:20:07,261 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2025-04-14 01:20:07,262 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:20:07,262 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:20:07,262 INFO L85 PathProgramCache]: Analyzing trace with hash -567580863, now seen corresponding path program 3 times [2025-04-14 01:20:07,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:20:07,263 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049351817] [2025-04-14 01:20:07,263 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 01:20:07,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:20:07,267 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 23 statements into 2 equivalence classes. [2025-04-14 01:20:07,271 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-04-14 01:20:07,271 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-14 01:20:07,271 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:20:07,299 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-14 01:20:07,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:20:07,299 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049351817] [2025-04-14 01:20:07,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049351817] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:20:07,299 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002409138] [2025-04-14 01:20:07,299 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 01:20:07,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:20:07,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:20:07,301 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:20:07,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-04-14 01:20:07,338 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 23 statements into 2 equivalence classes. [2025-04-14 01:20:07,351 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-04-14 01:20:07,351 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-14 01:20:07,351 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:20:07,351 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-14 01:20:07,352 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:20:07,388 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-14 01:20:07,389 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:20:07,429 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-14 01:20:07,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002409138] provided 1 perfect and 1 imperfect interpolant sequences [2025-04-14 01:20:07,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-04-14 01:20:07,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2025-04-14 01:20:07,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335852527] [2025-04-14 01:20:07,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:20:07,430 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-14 01:20:07,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:20:07,430 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-14 01:20:07,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2025-04-14 01:20:07,430 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 32 [2025-04-14 01:20:07,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 1368 transitions, 26531 flow. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:20:07,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:20:07,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 32 [2025-04-14 01:20:07,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:20:08,795 INFO L116 PetriNetUnfolderBase]: 4815/7036 cut-off events. [2025-04-14 01:20:08,796 INFO L117 PetriNetUnfolderBase]: For 72806/72806 co-relation queries the response was YES. [2025-04-14 01:20:08,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65594 conditions, 7036 events. 4815/7036 cut-off events. For 72806/72806 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 37895 event pairs, 489 based on Foata normal form. 47/6389 useless extension candidates. Maximal degree in co-relation 65485. Up to 5265 conditions per place. [2025-04-14 01:20:08,871 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 1239 selfloop transitions, 208 changer transitions 0/1447 dead transitions. [2025-04-14 01:20:08,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 1447 transitions, 30590 flow [2025-04-14 01:20:08,871 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-14 01:20:08,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-14 01:20:08,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2025-04-14 01:20:08,872 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.3482142857142857 [2025-04-14 01:20:08,872 INFO L175 Difference]: Start difference. First operand has 365 places, 1368 transitions, 26531 flow. Second operand 7 states and 78 transitions. [2025-04-14 01:20:08,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 1447 transitions, 30590 flow [2025-04-14 01:20:10,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 1447 transitions, 30503 flow, removed 25 selfloop flow, removed 5 redundant places. [2025-04-14 01:20:10,077 INFO L231 Difference]: Finished difference. Result has 365 places, 1381 transitions, 27693 flow [2025-04-14 01:20:10,078 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=26331, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=27693, PETRI_PLACES=365, PETRI_TRANSITIONS=1381} [2025-04-14 01:20:10,079 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 334 predicate places. [2025-04-14 01:20:10,079 INFO L485 AbstractCegarLoop]: Abstraction has has 365 places, 1381 transitions, 27693 flow [2025-04-14 01:20:10,079 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:20:10,079 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:20:10,079 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:20:10,085 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-04-14 01:20:10,279 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:20:10,279 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:20:10,280 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:20:10,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1399613321, now seen corresponding path program 4 times [2025-04-14 01:20:10,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:20:10,280 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825712343] [2025-04-14 01:20:10,280 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 01:20:10,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:20:10,285 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 23 statements into 2 equivalence classes. [2025-04-14 01:20:10,286 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 20 of 23 statements. [2025-04-14 01:20:10,286 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-04-14 01:20:10,286 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:20:10,306 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-14 01:20:10,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:20:10,306 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825712343] [2025-04-14 01:20:10,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825712343] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:20:10,306 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322330147] [2025-04-14 01:20:10,306 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 01:20:10,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:20:10,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:20:10,308 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:20:10,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-04-14 01:20:10,346 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 23 statements into 2 equivalence classes. [2025-04-14 01:20:10,354 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 20 of 23 statements. [2025-04-14 01:20:10,354 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-04-14 01:20:10,354 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:20:10,355 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-14 01:20:10,356 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:20:10,379 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-14 01:20:10,379 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:20:10,401 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-14 01:20:10,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322330147] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 01:20:10,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 01:20:10,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2025-04-14 01:20:10,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920077523] [2025-04-14 01:20:10,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 01:20:10,401 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-04-14 01:20:10,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:20:10,402 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-04-14 01:20:10,402 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2025-04-14 01:20:10,402 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 32 [2025-04-14 01:20:10,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 1381 transitions, 27693 flow. Second operand has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 0 states have call successors, (0), 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 01:20:10,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:20:10,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 32 [2025-04-14 01:20:10,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:20:12,279 INFO L116 PetriNetUnfolderBase]: 5921/8582 cut-off events. [2025-04-14 01:20:12,280 INFO L117 PetriNetUnfolderBase]: For 87216/87216 co-relation queries the response was YES. [2025-04-14 01:20:12,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78472 conditions, 8582 events. 5921/8582 cut-off events. For 87216/87216 co-relation queries the response was YES. Maximal size of possible extension queue 598. Compared 47255 event pairs, 122 based on Foata normal form. 12/7753 useless extension candidates. Maximal degree in co-relation 78361. Up to 3900 conditions per place. [2025-04-14 01:20:12,369 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 1628 selfloop transitions, 460 changer transitions 0/2088 dead transitions. [2025-04-14 01:20:12,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 2088 transitions, 44830 flow [2025-04-14 01:20:12,369 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-04-14 01:20:12,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-04-14 01:20:12,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 197 transitions. [2025-04-14 01:20:12,370 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4735576923076923 [2025-04-14 01:20:12,370 INFO L175 Difference]: Start difference. First operand has 365 places, 1381 transitions, 27693 flow. Second operand 13 states and 197 transitions. [2025-04-14 01:20:12,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 2088 transitions, 44830 flow [2025-04-14 01:20:14,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 2088 transitions, 44773 flow, removed 26 selfloop flow, removed 3 redundant places. [2025-04-14 01:20:14,043 INFO L231 Difference]: Finished difference. Result has 383 places, 1555 transitions, 32640 flow [2025-04-14 01:20:14,044 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=27676, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=300, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1039, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=32640, PETRI_PLACES=383, PETRI_TRANSITIONS=1555} [2025-04-14 01:20:14,045 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 352 predicate places. [2025-04-14 01:20:14,045 INFO L485 AbstractCegarLoop]: Abstraction has has 383 places, 1555 transitions, 32640 flow [2025-04-14 01:20:14,045 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 0 states have call successors, (0), 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 01:20:14,045 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:20:14,045 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:20:14,051 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-04-14 01:20:14,245 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:20:14,245 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:20:14,246 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:20:14,246 INFO L85 PathProgramCache]: Analyzing trace with hash 620430603, now seen corresponding path program 5 times [2025-04-14 01:20:14,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:20:14,246 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707066891] [2025-04-14 01:20:14,246 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 01:20:14,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:20:14,250 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-04-14 01:20:14,252 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-04-14 01:20:14,252 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:20:14,252 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:20:14,284 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:20:14,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:20:14,284 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707066891] [2025-04-14 01:20:14,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707066891] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:20:14,284 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086729428] [2025-04-14 01:20:14,284 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 01:20:14,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:20:14,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:20:14,286 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:20:14,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-04-14 01:20:14,327 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-04-14 01:20:14,341 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-04-14 01:20:14,341 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:20:14,341 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:20:14,342 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-14 01:20:14,342 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:20:14,382 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:20:14,382 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:20:14,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:20:14,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086729428] provided 1 perfect and 1 imperfect interpolant sequences [2025-04-14 01:20:14,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-04-14 01:20:14,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 13 [2025-04-14 01:20:14,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317636495] [2025-04-14 01:20:14,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 01:20:14,422 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-14 01:20:14,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:20:14,423 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-14 01:20:14,423 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2025-04-14 01:20:14,423 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 32 [2025-04-14 01:20:14,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 1555 transitions, 32640 flow. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 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 01:20:14,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:20:14,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 32 [2025-04-14 01:20:14,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:20:16,433 INFO L116 PetriNetUnfolderBase]: 6042/8697 cut-off events. [2025-04-14 01:20:16,433 INFO L117 PetriNetUnfolderBase]: For 124376/124376 co-relation queries the response was YES. [2025-04-14 01:20:16,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81724 conditions, 8697 events. 6042/8697 cut-off events. For 124376/124376 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 46807 event pairs, 622 based on Foata normal form. 108/8614 useless extension candidates. Maximal degree in co-relation 81604. Up to 5229 conditions per place. [2025-04-14 01:20:16,534 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 1333 selfloop transitions, 350 changer transitions 0/1683 dead transitions. [2025-04-14 01:20:16,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 1683 transitions, 38471 flow [2025-04-14 01:20:16,534 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-14 01:20:16,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-04-14 01:20:16,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2025-04-14 01:20:16,535 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.35267857142857145 [2025-04-14 01:20:16,535 INFO L175 Difference]: Start difference. First operand has 383 places, 1555 transitions, 32640 flow. Second operand 7 states and 79 transitions. [2025-04-14 01:20:16,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 1683 transitions, 38471 flow [2025-04-14 01:20:18,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 1683 transitions, 38205 flow, removed 53 selfloop flow, removed 1 redundant places. [2025-04-14 01:20:18,737 INFO L231 Difference]: Finished difference. Result has 386 places, 1519 transitions, 32973 flow [2025-04-14 01:20:18,738 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=31600, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=336, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=32973, PETRI_PLACES=386, PETRI_TRANSITIONS=1519} [2025-04-14 01:20:18,739 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 355 predicate places. [2025-04-14 01:20:18,739 INFO L485 AbstractCegarLoop]: Abstraction has has 386 places, 1519 transitions, 32973 flow [2025-04-14 01:20:18,739 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 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 01:20:18,739 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:20:18,739 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:20:18,745 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-04-14 01:20:18,939 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:20:18,940 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:20:18,940 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:20:18,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1903230780, now seen corresponding path program 1 times [2025-04-14 01:20:18,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:20:18,940 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726755610] [2025-04-14 01:20:18,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:20:18,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:20:18,944 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-04-14 01:20:18,955 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-04-14 01:20:18,958 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:20:18,958 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:20:19,690 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:20:19,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:20:19,690 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726755610] [2025-04-14 01:20:19,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726755610] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:20:19,690 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093236579] [2025-04-14 01:20:19,690 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 01:20:19,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:20:19,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:20:19,692 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:20:19,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-04-14 01:20:19,735 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-04-14 01:20:19,749 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-04-14 01:20:19,749 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:20:19,749 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:20:19,750 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-04-14 01:20:19,751 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:20:20,208 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-14 01:20:20,208 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 163 treesize of output 77 [2025-04-14 01:20:20,268 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-14 01:20:20,268 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:20:20,867 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-14 01:20:20,867 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 315 treesize of output 159 [2025-04-14 01:20:21,488 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-14 01:20:21,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093236579] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 01:20:21,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 01:20:21,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 9] total 33 [2025-04-14 01:20:21,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223419202] [2025-04-14 01:20:21,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 01:20:21,489 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-04-14 01:20:21,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:20:21,489 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-04-14 01:20:21,489 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1067, Unknown=0, NotChecked=0, Total=1190 [2025-04-14 01:20:21,489 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 32 [2025-04-14 01:20:21,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 1519 transitions, 32973 flow. Second operand has 35 states, 35 states have (on average 5.0) internal successors, (175), 35 states have internal predecessors, (175), 0 states have call successors, (0), 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 01:20:21,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:20:21,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 32 [2025-04-14 01:20:21,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:20:27,151 INFO L116 PetriNetUnfolderBase]: 7448/10735 cut-off events. [2025-04-14 01:20:27,152 INFO L117 PetriNetUnfolderBase]: For 149662/149662 co-relation queries the response was YES. [2025-04-14 01:20:27,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99168 conditions, 10735 events. 7448/10735 cut-off events. For 149662/149662 co-relation queries the response was YES. Maximal size of possible extension queue 674. Compared 59590 event pairs, 383 based on Foata normal form. 2/10483 useless extension candidates. Maximal degree in co-relation 99045. Up to 8739 conditions per place. [2025-04-14 01:20:27,267 INFO L140 encePairwiseOnDemand]: 16/32 looper letters, 1455 selfloop transitions, 559 changer transitions 8/2022 dead transitions. [2025-04-14 01:20:27,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 2022 transitions, 44139 flow [2025-04-14 01:20:27,268 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2025-04-14 01:20:27,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2025-04-14 01:20:27,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 454 transitions. [2025-04-14 01:20:27,269 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.30842391304347827 [2025-04-14 01:20:27,269 INFO L175 Difference]: Start difference. First operand has 386 places, 1519 transitions, 32973 flow. Second operand 46 states and 454 transitions. [2025-04-14 01:20:27,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 2022 transitions, 44139 flow [2025-04-14 01:20:29,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 2022 transitions, 44059 flow, removed 35 selfloop flow, removed 4 redundant places. [2025-04-14 01:20:29,612 INFO L231 Difference]: Finished difference. Result has 440 places, 1839 transitions, 40107 flow [2025-04-14 01:20:29,612 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=32931, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=301, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=40107, PETRI_PLACES=440, PETRI_TRANSITIONS=1839} [2025-04-14 01:20:29,613 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 409 predicate places. [2025-04-14 01:20:29,613 INFO L485 AbstractCegarLoop]: Abstraction has has 440 places, 1839 transitions, 40107 flow [2025-04-14 01:20:29,613 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 5.0) internal successors, (175), 35 states have internal predecessors, (175), 0 states have call successors, (0), 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 01:20:29,613 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:20:29,613 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:20:29,620 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-04-14 01:20:29,814 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2025-04-14 01:20:29,814 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:20:29,815 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:20:29,815 INFO L85 PathProgramCache]: Analyzing trace with hash -50232744, now seen corresponding path program 2 times [2025-04-14 01:20:29,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:20:29,815 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547103701] [2025-04-14 01:20:29,815 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 01:20:29,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:20:29,820 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-04-14 01:20:29,828 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-04-14 01:20:29,828 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:20:29,828 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:20:30,328 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-14 01:20:30,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:20:30,329 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547103701] [2025-04-14 01:20:30,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547103701] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:20:30,329 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971591619] [2025-04-14 01:20:30,329 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 01:20:30,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:20:30,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:20:30,331 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:20:30,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-04-14 01:20:30,376 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-04-14 01:20:30,392 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-04-14 01:20:30,392 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:20:30,392 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:20:30,393 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-04-14 01:20:30,394 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:20:31,056 INFO L189 IndexEqualityManager]: detected not equals via solver [2025-04-14 01:20:31,057 INFO L189 IndexEqualityManager]: detected not equals via solver [2025-04-14 01:20:31,060 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-14 01:20:31,060 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 175 treesize of output 87 [2025-04-14 01:20:31,242 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:20:31,242 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:20:31,831 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-14 01:20:31,832 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 219 treesize of output 111 [2025-04-14 01:20:32,074 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-14 01:20:32,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971591619] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 01:20:32,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 01:20:32,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 11] total 30 [2025-04-14 01:20:32,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221648805] [2025-04-14 01:20:32,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 01:20:32,075 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-04-14 01:20:32,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:20:32,076 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-04-14 01:20:32,076 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=855, Unknown=0, NotChecked=0, Total=992 [2025-04-14 01:20:32,076 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 32 [2025-04-14 01:20:32,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 1839 transitions, 40107 flow. Second operand has 32 states, 32 states have (on average 4.8125) internal successors, (154), 32 states have internal predecessors, (154), 0 states have call successors, (0), 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 01:20:32,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:20:32,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 32 [2025-04-14 01:20:32,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:20:38,824 INFO L116 PetriNetUnfolderBase]: 8995/13093 cut-off events. [2025-04-14 01:20:38,824 INFO L117 PetriNetUnfolderBase]: For 192869/192869 co-relation queries the response was YES. [2025-04-14 01:20:38,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122835 conditions, 13093 events. 8995/13093 cut-off events. For 192869/192869 co-relation queries the response was YES. Maximal size of possible extension queue 825. Compared 76665 event pairs, 321 based on Foata normal form. 3/12773 useless extension candidates. Maximal degree in co-relation 122700. Up to 9341 conditions per place. [2025-04-14 01:20:38,956 INFO L140 encePairwiseOnDemand]: 14/32 looper letters, 1407 selfloop transitions, 1006 changer transitions 15/2428 dead transitions. [2025-04-14 01:20:38,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 2428 transitions, 53944 flow [2025-04-14 01:20:38,957 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2025-04-14 01:20:38,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2025-04-14 01:20:38,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 513 transitions. [2025-04-14 01:20:38,958 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.31433823529411764 [2025-04-14 01:20:38,958 INFO L175 Difference]: Start difference. First operand has 440 places, 1839 transitions, 40107 flow. Second operand 51 states and 513 transitions. [2025-04-14 01:20:38,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 2428 transitions, 53944 flow [2025-04-14 01:20:42,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 2428 transitions, 52747 flow, removed 426 selfloop flow, removed 9 redundant places. [2025-04-14 01:20:42,572 INFO L231 Difference]: Finished difference. Result has 503 places, 2197 transitions, 49710 flow [2025-04-14 01:20:42,573 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=38994, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1839, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=684, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=983, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=49710, PETRI_PLACES=503, PETRI_TRANSITIONS=2197} [2025-04-14 01:20:42,573 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 472 predicate places. [2025-04-14 01:20:42,573 INFO L485 AbstractCegarLoop]: Abstraction has has 503 places, 2197 transitions, 49710 flow [2025-04-14 01:20:42,573 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.8125) internal successors, (154), 32 states have internal predecessors, (154), 0 states have call successors, (0), 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 01:20:42,573 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:20:42,574 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:20:42,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-04-14 01:20:42,774 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:20:42,774 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:20:42,775 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:20:42,775 INFO L85 PathProgramCache]: Analyzing trace with hash 447092104, now seen corresponding path program 3 times [2025-04-14 01:20:42,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:20:42,775 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939935724] [2025-04-14 01:20:42,775 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 01:20:42,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:20:42,780 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 25 statements into 2 equivalence classes. [2025-04-14 01:20:42,789 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-04-14 01:20:42,789 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-14 01:20:42,789 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:20:43,275 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-14 01:20:43,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:20:43,276 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939935724] [2025-04-14 01:20:43,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939935724] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:20:43,276 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614969391] [2025-04-14 01:20:43,276 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 01:20:43,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:20:43,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:20:43,278 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:20:43,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-04-14 01:20:43,319 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 25 statements into 2 equivalence classes. [2025-04-14 01:20:43,333 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-04-14 01:20:43,333 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-14 01:20:43,333 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:20:43,334 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-04-14 01:20:43,335 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:20:43,852 INFO L189 IndexEqualityManager]: detected not equals via solver [2025-04-14 01:20:43,854 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-14 01:20:43,854 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 163 treesize of output 77 [2025-04-14 01:20:43,949 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-14 01:20:43,949 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:20:44,527 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-14 01:20:44,528 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 203 treesize of output 107 [2025-04-14 01:20:44,840 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-14 01:20:44,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614969391] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 01:20:44,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 01:20:44,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 11] total 33 [2025-04-14 01:20:44,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303656041] [2025-04-14 01:20:44,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 01:20:44,841 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-04-14 01:20:44,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:20:44,842 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-04-14 01:20:44,842 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1029, Unknown=0, NotChecked=0, Total=1190 [2025-04-14 01:20:44,842 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 32 [2025-04-14 01:20:44,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 2197 transitions, 49710 flow. Second operand has 35 states, 35 states have (on average 4.685714285714286) internal successors, (164), 35 states have internal predecessors, (164), 0 states have call successors, (0), 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 01:20:44,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:20:44,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 32 [2025-04-14 01:20:44,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:20:54,226 INFO L116 PetriNetUnfolderBase]: 9997/14636 cut-off events. [2025-04-14 01:20:54,227 INFO L117 PetriNetUnfolderBase]: For 238988/238988 co-relation queries the response was YES. [2025-04-14 01:20:54,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142116 conditions, 14636 events. 9997/14636 cut-off events. For 238988/238988 co-relation queries the response was YES. Maximal size of possible extension queue 935. Compared 88242 event pairs, 369 based on Foata normal form. 2/14237 useless extension candidates. Maximal degree in co-relation 141961. Up to 9815 conditions per place. [2025-04-14 01:20:54,428 INFO L140 encePairwiseOnDemand]: 15/32 looper letters, 1467 selfloop transitions, 1183 changer transitions 10/2660 dead transitions. [2025-04-14 01:20:54,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 561 places, 2660 transitions, 60916 flow [2025-04-14 01:20:54,429 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2025-04-14 01:20:54,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2025-04-14 01:20:54,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 633 transitions. [2025-04-14 01:20:54,430 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.3190524193548387 [2025-04-14 01:20:54,431 INFO L175 Difference]: Start difference. First operand has 503 places, 2197 transitions, 49710 flow. Second operand 62 states and 633 transitions. [2025-04-14 01:20:54,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 561 places, 2660 transitions, 60916 flow [2025-04-14 01:21:00,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 549 places, 2660 transitions, 59680 flow, removed 458 selfloop flow, removed 12 redundant places. [2025-04-14 01:21:00,534 INFO L231 Difference]: Finished difference. Result has 571 places, 2406 transitions, 55429 flow [2025-04-14 01:21:00,535 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=48522, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1000, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=62, PETRI_FLOW=55429, PETRI_PLACES=571, PETRI_TRANSITIONS=2406} [2025-04-14 01:21:00,536 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 540 predicate places. [2025-04-14 01:21:00,536 INFO L485 AbstractCegarLoop]: Abstraction has has 571 places, 2406 transitions, 55429 flow [2025-04-14 01:21:00,536 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.685714285714286) internal successors, (164), 35 states have internal predecessors, (164), 0 states have call successors, (0), 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 01:21:00,536 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:21:00,536 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:21:00,543 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-04-14 01:21:00,737 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:21:00,737 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:21:00,738 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:21:00,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1307155926, now seen corresponding path program 4 times [2025-04-14 01:21:00,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:21:00,738 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688530001] [2025-04-14 01:21:00,738 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 01:21:00,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:21:00,751 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 25 statements into 2 equivalence classes. [2025-04-14 01:21:00,768 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-04-14 01:21:00,768 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-14 01:21:00,768 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:21:01,394 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-14 01:21:01,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:21:01,395 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688530001] [2025-04-14 01:21:01,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688530001] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:21:01,395 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833801247] [2025-04-14 01:21:01,395 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 01:21:01,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:21:01,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:21:01,397 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:21:01,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-04-14 01:21:01,439 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 25 statements into 2 equivalence classes. [2025-04-14 01:21:01,452 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-04-14 01:21:01,452 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-14 01:21:01,452 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:21:01,453 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-04-14 01:21:01,454 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:21:02,007 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-14 01:21:02,008 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 145 treesize of output 77 [2025-04-14 01:21:02,076 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:21:02,076 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:21:02,658 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-14 01:21:02,658 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 233 treesize of output 109 [2025-04-14 01:21:02,861 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-14 01:21:02,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833801247] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 01:21:02,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 01:21:02,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 10] total 31 [2025-04-14 01:21:02,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405655374] [2025-04-14 01:21:02,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 01:21:02,862 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-04-14 01:21:02,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:21:02,862 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-04-14 01:21:02,863 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=923, Unknown=0, NotChecked=0, Total=1056 [2025-04-14 01:21:02,863 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 32 [2025-04-14 01:21:02,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 571 places, 2406 transitions, 55429 flow. Second operand has 33 states, 33 states have (on average 4.818181818181818) internal successors, (159), 33 states have internal predecessors, (159), 0 states have call successors, (0), 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 01:21:02,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:21:02,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 32 [2025-04-14 01:21:02,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:21:11,903 INFO L116 PetriNetUnfolderBase]: 10785/15845 cut-off events. [2025-04-14 01:21:11,903 INFO L117 PetriNetUnfolderBase]: For 273248/273248 co-relation queries the response was YES. [2025-04-14 01:21:12,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161193 conditions, 15845 events. 10785/15845 cut-off events. For 273248/273248 co-relation queries the response was YES. Maximal size of possible extension queue 996. Compared 97021 event pairs, 650 based on Foata normal form. 2/15428 useless extension candidates. Maximal degree in co-relation 161023. Up to 13662 conditions per place. [2025-04-14 01:21:12,151 INFO L140 encePairwiseOnDemand]: 15/32 looper letters, 2114 selfloop transitions, 609 changer transitions 6/2729 dead transitions. [2025-04-14 01:21:12,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 617 places, 2729 transitions, 64966 flow [2025-04-14 01:21:12,152 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2025-04-14 01:21:12,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2025-04-14 01:21:12,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 480 transitions. [2025-04-14 01:21:12,153 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.30612244897959184 [2025-04-14 01:21:12,153 INFO L175 Difference]: Start difference. First operand has 571 places, 2406 transitions, 55429 flow. Second operand 49 states and 480 transitions. [2025-04-14 01:21:12,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 617 places, 2729 transitions, 64966 flow [2025-04-14 01:21:19,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 594 places, 2729 transitions, 62760 flow, removed 680 selfloop flow, removed 23 redundant places. [2025-04-14 01:21:19,304 INFO L231 Difference]: Finished difference. Result has 620 places, 2573 transitions, 57879 flow [2025-04-14 01:21:19,306 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=53827, PETRI_DIFFERENCE_MINUEND_PLACES=546, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=468, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1843, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=57879, PETRI_PLACES=620, PETRI_TRANSITIONS=2573} [2025-04-14 01:21:19,306 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 589 predicate places. [2025-04-14 01:21:19,306 INFO L485 AbstractCegarLoop]: Abstraction has has 620 places, 2573 transitions, 57879 flow [2025-04-14 01:21:19,307 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.818181818181818) internal successors, (159), 33 states have internal predecessors, (159), 0 states have call successors, (0), 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 01:21:19,307 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:21:19,307 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:21:19,313 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-04-14 01:21:19,507 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:21:19,507 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:21:19,508 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:21:19,508 INFO L85 PathProgramCache]: Analyzing trace with hash -578962766, now seen corresponding path program 5 times [2025-04-14 01:21:19,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:21:19,508 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182230136] [2025-04-14 01:21:19,509 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 01:21:19,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:21:19,513 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-04-14 01:21:19,524 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-04-14 01:21:19,525 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:21:19,525 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:21:20,427 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:21:20,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:21:20,428 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182230136] [2025-04-14 01:21:20,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182230136] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:21:20,428 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239858656] [2025-04-14 01:21:20,428 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 01:21:20,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:21:20,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:21:20,431 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:21:20,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-04-14 01:21:20,480 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-04-14 01:21:20,496 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-04-14 01:21:20,496 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:21:20,496 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:21:20,497 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-04-14 01:21:20,498 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:21:21,202 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-14 01:21:21,202 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 147 treesize of output 93 [2025-04-14 01:21:21,392 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:21:21,392 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:21:21,983 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-14 01:21:21,983 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 233 treesize of output 109 [2025-04-14 01:21:22,192 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-14 01:21:22,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239858656] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 01:21:22,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 01:21:22,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 10] total 37 [2025-04-14 01:21:22,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016040369] [2025-04-14 01:21:22,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 01:21:22,193 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2025-04-14 01:21:22,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:21:22,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2025-04-14 01:21:22,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1343, Unknown=0, NotChecked=0, Total=1482 [2025-04-14 01:21:22,194 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 32 [2025-04-14 01:21:22,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 620 places, 2573 transitions, 57879 flow. Second operand has 39 states, 39 states have (on average 4.82051282051282) internal successors, (188), 39 states have internal predecessors, (188), 0 states have call successors, (0), 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 01:21:22,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:21:22,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 32 [2025-04-14 01:21:22,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:21:35,965 INFO L116 PetriNetUnfolderBase]: 11555/17010 cut-off events. [2025-04-14 01:21:35,965 INFO L117 PetriNetUnfolderBase]: For 311790/311790 co-relation queries the response was YES. [2025-04-14 01:21:36,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175221 conditions, 17010 events. 11555/17010 cut-off events. For 311790/311790 co-relation queries the response was YES. Maximal size of possible extension queue 1068. Compared 105264 event pairs, 564 based on Foata normal form. 3/16547 useless extension candidates. Maximal degree in co-relation 175029. Up to 13394 conditions per place. [2025-04-14 01:21:36,206 INFO L140 encePairwiseOnDemand]: 14/32 looper letters, 2077 selfloop transitions, 962 changer transitions 7/3046 dead transitions. [2025-04-14 01:21:36,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 701 places, 3046 transitions, 70399 flow [2025-04-14 01:21:36,206 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2025-04-14 01:21:36,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2025-04-14 01:21:36,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 735 transitions. [2025-04-14 01:21:36,207 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.28010670731707316 [2025-04-14 01:21:36,207 INFO L175 Difference]: Start difference. First operand has 620 places, 2573 transitions, 57879 flow. Second operand 82 states and 735 transitions. [2025-04-14 01:21:36,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 701 places, 3046 transitions, 70399 flow [2025-04-14 01:21:44,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 683 places, 3046 transitions, 69222 flow, removed 250 selfloop flow, removed 18 redundant places. [2025-04-14 01:21:44,902 INFO L231 Difference]: Finished difference. Result has 696 places, 2782 transitions, 63260 flow [2025-04-14 01:21:44,904 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=56767, PETRI_DIFFERENCE_MINUEND_PLACES=602, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=769, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1714, PETRI_DIFFERENCE_SUBTRAHEND_STATES=82, PETRI_FLOW=63260, PETRI_PLACES=696, PETRI_TRANSITIONS=2782} [2025-04-14 01:21:44,905 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 665 predicate places. [2025-04-14 01:21:44,905 INFO L485 AbstractCegarLoop]: Abstraction has has 696 places, 2782 transitions, 63260 flow [2025-04-14 01:21:44,905 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 4.82051282051282) internal successors, (188), 39 states have internal predecessors, (188), 0 states have call successors, (0), 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 01:21:44,905 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:21:44,905 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:21:44,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2025-04-14 01:21:45,110 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2025-04-14 01:21:45,110 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:21:45,111 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:21:45,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1262251810, now seen corresponding path program 6 times [2025-04-14 01:21:45,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:21:45,111 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583678070] [2025-04-14 01:21:45,111 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-14 01:21:45,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:21:45,117 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 25 statements into 2 equivalence classes. [2025-04-14 01:21:45,126 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-04-14 01:21:45,127 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-14 01:21:45,127 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:21:45,944 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-14 01:21:45,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:21:45,944 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583678070] [2025-04-14 01:21:45,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583678070] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:21:45,944 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54482984] [2025-04-14 01:21:45,944 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-14 01:21:45,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:21:45,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:21:45,946 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:21:45,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-04-14 01:21:45,990 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 25 statements into 2 equivalence classes. [2025-04-14 01:21:46,005 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-04-14 01:21:46,005 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-14 01:21:46,005 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:21:46,006 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-04-14 01:21:46,007 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:21:46,378 INFO L189 IndexEqualityManager]: detected not equals via solver [2025-04-14 01:21:46,385 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-14 01:21:46,385 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 168 treesize of output 102 [2025-04-14 01:21:46,765 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-14 01:21:46,765 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:21:47,455 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-14 01:21:47,456 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 219 treesize of output 111 [2025-04-14 01:21:47,815 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-14 01:21:47,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54482984] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 01:21:47,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 01:21:47,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 11] total 30 [2025-04-14 01:21:47,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798485712] [2025-04-14 01:21:47,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 01:21:47,816 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-04-14 01:21:47,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:21:47,816 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-04-14 01:21:47,816 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=841, Unknown=0, NotChecked=0, Total=992 [2025-04-14 01:21:47,816 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 32 [2025-04-14 01:21:47,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 696 places, 2782 transitions, 63260 flow. Second operand has 32 states, 32 states have (on average 4.75) internal successors, (152), 32 states have internal predecessors, (152), 0 states have call successors, (0), 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 01:21:47,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:21:47,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 32 [2025-04-14 01:21:47,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:22:01,258 INFO L116 PetriNetUnfolderBase]: 12808/18820 cut-off events. [2025-04-14 01:22:01,258 INFO L117 PetriNetUnfolderBase]: For 359162/359162 co-relation queries the response was YES. [2025-04-14 01:22:01,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199128 conditions, 18820 events. 12808/18820 cut-off events. For 359162/359162 co-relation queries the response was YES. Maximal size of possible extension queue 1164. Compared 118017 event pairs, 370 based on Foata normal form. 3/18276 useless extension candidates. Maximal degree in co-relation 198925. Up to 13571 conditions per place. [2025-04-14 01:22:01,557 INFO L140 encePairwiseOnDemand]: 15/32 looper letters, 1815 selfloop transitions, 1669 changer transitions 13/3497 dead transitions. [2025-04-14 01:22:01,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 763 places, 3497 transitions, 83036 flow [2025-04-14 01:22:01,559 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2025-04-14 01:22:01,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2025-04-14 01:22:01,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 697 transitions. [2025-04-14 01:22:01,560 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.3203125 [2025-04-14 01:22:01,560 INFO L175 Difference]: Start difference. First operand has 696 places, 2782 transitions, 63260 flow. Second operand 68 states and 697 transitions. [2025-04-14 01:22:01,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 763 places, 3497 transitions, 83036 flow [2025-04-14 01:22:12,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 728 places, 3497 transitions, 80904 flow, removed 613 selfloop flow, removed 35 redundant places. [2025-04-14 01:22:12,454 INFO L231 Difference]: Finished difference. Result has 763 places, 3261 transitions, 78239 flow [2025-04-14 01:22:12,456 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=61342, PETRI_DIFFERENCE_MINUEND_PLACES=661, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2782, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1227, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=68, PETRI_FLOW=78239, PETRI_PLACES=763, PETRI_TRANSITIONS=3261} [2025-04-14 01:22:12,456 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 732 predicate places. [2025-04-14 01:22:12,456 INFO L485 AbstractCegarLoop]: Abstraction has has 763 places, 3261 transitions, 78239 flow [2025-04-14 01:22:12,456 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.75) internal successors, (152), 32 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:22:12,456 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:22:12,456 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:22:12,464 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-04-14 01:22:12,657 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2025-04-14 01:22:12,657 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:22:12,658 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:22:12,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1531033900, now seen corresponding path program 7 times [2025-04-14 01:22:12,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:22:12,658 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492487999] [2025-04-14 01:22:12,658 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-14 01:22:12,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:22:12,663 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-04-14 01:22:12,671 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-04-14 01:22:12,671 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:22:12,671 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:22:13,466 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:22:13,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:22:13,467 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492487999] [2025-04-14 01:22:13,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492487999] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:22:13,467 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441123537] [2025-04-14 01:22:13,467 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-14 01:22:13,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:22:13,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:22:13,469 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:22:13,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-04-14 01:22:13,513 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-04-14 01:22:13,526 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-04-14 01:22:13,526 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:22:13,526 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:22:13,527 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 35 conjuncts are in the unsatisfiable core [2025-04-14 01:22:13,528 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:22:13,567 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-14 01:22:13,962 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-14 01:22:13,962 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 147 treesize of output 93 [2025-04-14 01:22:14,291 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:22:14,291 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:22:15,536 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 262 treesize of output 230 [2025-04-14 01:22:15,541 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-14 01:22:15,542 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 347 treesize of output 283 [2025-04-14 01:22:15,688 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 118 [2025-04-14 01:22:15,699 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-14 01:22:15,699 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 196 treesize of output 1 [2025-04-14 01:22:15,701 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:22:15,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441123537] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 01:22:15,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 01:22:15,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 12] total 36 [2025-04-14 01:22:15,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924251484] [2025-04-14 01:22:15,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 01:22:15,701 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2025-04-14 01:22:15,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:22:15,702 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2025-04-14 01:22:15,702 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1226, Unknown=0, NotChecked=0, Total=1406 [2025-04-14 01:22:15,702 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 32 [2025-04-14 01:22:15,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 763 places, 3261 transitions, 78239 flow. Second operand has 38 states, 38 states have (on average 4.631578947368421) internal successors, (176), 38 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:22:15,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:22:15,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 32 [2025-04-14 01:22:15,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:22:30,319 INFO L116 PetriNetUnfolderBase]: 13363/19653 cut-off events. [2025-04-14 01:22:30,320 INFO L117 PetriNetUnfolderBase]: For 450248/450248 co-relation queries the response was YES. [2025-04-14 01:22:30,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218926 conditions, 19653 events. 13363/19653 cut-off events. For 450248/450248 co-relation queries the response was YES. Maximal size of possible extension queue 1188. Compared 123439 event pairs, 596 based on Foata normal form. 3/19139 useless extension candidates. Maximal degree in co-relation 218698. Up to 17376 conditions per place. [2025-04-14 01:22:30,685 INFO L140 encePairwiseOnDemand]: 15/32 looper letters, 2665 selfloop transitions, 966 changer transitions 9/3640 dead transitions. [2025-04-14 01:22:30,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 817 places, 3640 transitions, 91985 flow [2025-04-14 01:22:30,685 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2025-04-14 01:22:30,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2025-04-14 01:22:30,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 542 transitions. [2025-04-14 01:22:30,687 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.29714912280701755 [2025-04-14 01:22:30,687 INFO L175 Difference]: Start difference. First operand has 763 places, 3261 transitions, 78239 flow. Second operand 57 states and 542 transitions. [2025-04-14 01:22:30,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 817 places, 3640 transitions, 91985 flow [2025-04-14 01:22:46,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 810 places, 3640 transitions, 89190 flow, removed 1227 selfloop flow, removed 7 redundant places. [2025-04-14 01:22:46,394 INFO L231 Difference]: Finished difference. Result has 828 places, 3488 transitions, 83640 flow [2025-04-14 01:22:46,396 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=76053, PETRI_DIFFERENCE_MINUEND_PLACES=754, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=765, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=83640, PETRI_PLACES=828, PETRI_TRANSITIONS=3488} [2025-04-14 01:22:46,397 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 797 predicate places. [2025-04-14 01:22:46,397 INFO L485 AbstractCegarLoop]: Abstraction has has 828 places, 3488 transitions, 83640 flow [2025-04-14 01:22:46,397 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 4.631578947368421) internal successors, (176), 38 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:22:46,397 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:22:46,397 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:22:46,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2025-04-14 01:22:46,598 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2025-04-14 01:22:46,598 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:22:46,599 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:22:46,599 INFO L85 PathProgramCache]: Analyzing trace with hash -142121980, now seen corresponding path program 8 times [2025-04-14 01:22:46,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:22:46,599 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291165039] [2025-04-14 01:22:46,599 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 01:22:46,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:22:46,607 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-04-14 01:22:46,615 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-04-14 01:22:46,615 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:22:46,615 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:22:47,586 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:22:47,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:22:47,586 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291165039] [2025-04-14 01:22:47,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291165039] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:22:47,586 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036211181] [2025-04-14 01:22:47,586 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 01:22:47,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:22:47,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:22:47,588 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:22:47,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-04-14 01:22:47,632 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-04-14 01:22:47,645 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-04-14 01:22:47,645 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:22:47,645 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:22:47,646 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-04-14 01:22:47,647 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:22:48,214 INFO L189 IndexEqualityManager]: detected not equals via solver [2025-04-14 01:22:48,221 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-14 01:22:48,221 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 169 treesize of output 95 [2025-04-14 01:22:48,519 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:22:48,519 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:22:49,125 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-14 01:22:49,125 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 203 treesize of output 107 [2025-04-14 01:22:49,313 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-14 01:22:49,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036211181] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 01:22:49,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 01:22:49,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 11] total 36 [2025-04-14 01:22:49,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046199375] [2025-04-14 01:22:49,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 01:22:49,314 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2025-04-14 01:22:49,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:22:49,314 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2025-04-14 01:22:49,314 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1248, Unknown=0, NotChecked=0, Total=1406 [2025-04-14 01:22:49,315 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 32 [2025-04-14 01:22:49,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 828 places, 3488 transitions, 83640 flow. Second operand has 38 states, 38 states have (on average 4.7894736842105265) internal successors, (182), 38 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:22:49,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:22:49,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 32 [2025-04-14 01:22:49,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:23:14,205 INFO L116 PetriNetUnfolderBase]: 15289/22356 cut-off events. [2025-04-14 01:23:14,205 INFO L117 PetriNetUnfolderBase]: For 508175/508175 co-relation queries the response was YES. [2025-04-14 01:23:14,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249449 conditions, 22356 events. 15289/22356 cut-off events. For 508175/508175 co-relation queries the response was YES. Maximal size of possible extension queue 1338. Compared 141401 event pairs, 366 based on Foata normal form. 3/21685 useless extension candidates. Maximal degree in co-relation 249205. Up to 14097 conditions per place. [2025-04-14 01:23:14,644 INFO L140 encePairwiseOnDemand]: 14/32 looper letters, 1894 selfloop transitions, 2586 changer transitions 15/4495 dead transitions. [2025-04-14 01:23:14,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 943 places, 4495 transitions, 112220 flow [2025-04-14 01:23:14,644 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2025-04-14 01:23:14,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2025-04-14 01:23:14,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 1115 transitions. [2025-04-14 01:23:14,646 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.3003771551724138 [2025-04-14 01:23:14,646 INFO L175 Difference]: Start difference. First operand has 828 places, 3488 transitions, 83640 flow. Second operand 116 states and 1115 transitions. [2025-04-14 01:23:14,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 943 places, 4495 transitions, 112220 flow [2025-04-14 01:23:32,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 926 places, 4495 transitions, 110110 flow, removed 754 selfloop flow, removed 17 redundant places. [2025-04-14 01:23:33,056 INFO L231 Difference]: Finished difference. Result has 961 places, 4196 transitions, 105797 flow [2025-04-14 01:23:33,058 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=81800, PETRI_DIFFERENCE_MINUEND_PLACES=811, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1941, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=116, PETRI_FLOW=105797, PETRI_PLACES=961, PETRI_TRANSITIONS=4196} [2025-04-14 01:23:33,059 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 930 predicate places. [2025-04-14 01:23:33,059 INFO L485 AbstractCegarLoop]: Abstraction has has 961 places, 4196 transitions, 105797 flow [2025-04-14 01:23:33,059 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 4.7894736842105265) internal successors, (182), 38 states have internal predecessors, (182), 0 states have call successors, (0), 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 01:23:33,059 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:23:33,059 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:23:33,067 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-04-14 01:23:33,260 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:23:33,260 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:23:33,261 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:23:33,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1381426926, now seen corresponding path program 9 times [2025-04-14 01:23:33,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:23:33,261 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292332502] [2025-04-14 01:23:33,261 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 01:23:33,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:23:33,266 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 25 statements into 2 equivalence classes. [2025-04-14 01:23:33,273 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-04-14 01:23:33,273 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-14 01:23:33,273 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:23:33,992 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:23:33,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:23:33,993 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292332502] [2025-04-14 01:23:33,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292332502] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:23:33,993 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113452314] [2025-04-14 01:23:33,993 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-14 01:23:33,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:23:33,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:23:33,995 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:23:33,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-04-14 01:23:34,043 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 25 statements into 2 equivalence classes. [2025-04-14 01:23:34,060 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-04-14 01:23:34,060 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-14 01:23:34,060 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:23:34,061 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-04-14 01:23:34,062 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:23:34,597 INFO L189 IndexEqualityManager]: detected not equals via solver [2025-04-14 01:23:34,599 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-14 01:23:34,600 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 78 [2025-04-14 01:23:34,701 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-14 01:23:34,701 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:23:35,219 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-14 01:23:35,219 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 203 treesize of output 107 [2025-04-14 01:23:35,411 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-14 01:23:35,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113452314] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 01:23:35,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 01:23:35,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 11] total 33 [2025-04-14 01:23:35,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144092011] [2025-04-14 01:23:35,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 01:23:35,412 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-04-14 01:23:35,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:23:35,412 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-04-14 01:23:35,412 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1020, Unknown=0, NotChecked=0, Total=1190 [2025-04-14 01:23:35,412 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 32 [2025-04-14 01:23:35,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 961 places, 4196 transitions, 105797 flow. Second operand has 35 states, 35 states have (on average 4.714285714285714) internal successors, (165), 35 states have internal predecessors, (165), 0 states have call successors, (0), 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 01:23:35,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:23:35,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 32 [2025-04-14 01:23:35,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:23:56,631 INFO L116 PetriNetUnfolderBase]: 15997/23517 cut-off events. [2025-04-14 01:23:56,632 INFO L117 PetriNetUnfolderBase]: For 578406/578406 co-relation queries the response was YES. [2025-04-14 01:23:56,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278256 conditions, 23517 events. 15997/23517 cut-off events. For 578406/578406 co-relation queries the response was YES. Maximal size of possible extension queue 1405. Compared 151463 event pairs, 436 based on Foata normal form. 2/22827 useless extension candidates. Maximal degree in co-relation 277978. Up to 14967 conditions per place. [2025-04-14 01:23:57,075 INFO L140 encePairwiseOnDemand]: 14/32 looper letters, 2316 selfloop transitions, 2468 changer transitions 10/4794 dead transitions. [2025-04-14 01:23:57,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1033 places, 4794 transitions, 127350 flow [2025-04-14 01:23:57,077 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2025-04-14 01:23:57,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2025-04-14 01:23:57,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 762 transitions. [2025-04-14 01:23:57,078 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.31332236842105265 [2025-04-14 01:23:57,078 INFO L175 Difference]: Start difference. First operand has 961 places, 4196 transitions, 105797 flow. Second operand 76 states and 762 transitions. [2025-04-14 01:23:57,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1033 places, 4794 transitions, 127350 flow [2025-04-14 01:24:23,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1012 places, 4794 transitions, 121586 flow, removed 2617 selfloop flow, removed 21 redundant places. [2025-04-14 01:24:23,576 INFO L231 Difference]: Finished difference. Result has 1034 places, 4502 transitions, 115740 flow [2025-04-14 01:24:23,578 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=101213, PETRI_DIFFERENCE_MINUEND_PLACES=937, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1928, PETRI_DIFFERENCE_SUBTRAHEND_STATES=76, PETRI_FLOW=115740, PETRI_PLACES=1034, PETRI_TRANSITIONS=4502} [2025-04-14 01:24:23,579 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 1003 predicate places. [2025-04-14 01:24:23,579 INFO L485 AbstractCegarLoop]: Abstraction has has 1034 places, 4502 transitions, 115740 flow [2025-04-14 01:24:23,579 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.714285714285714) internal successors, (165), 35 states have internal predecessors, (165), 0 states have call successors, (0), 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 01:24:23,579 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:24:23,579 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:24:23,585 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-04-14 01:24:23,779 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:24:23,780 INFO L403 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:24:23,781 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:24:23,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1750437162, now seen corresponding path program 10 times [2025-04-14 01:24:23,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:24:23,781 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264510911] [2025-04-14 01:24:23,781 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 01:24:23,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:24:23,786 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 25 statements into 2 equivalence classes. [2025-04-14 01:24:23,802 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-04-14 01:24:23,802 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-14 01:24:23,802 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:24:24,311 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-14 01:24:24,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:24:24,312 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264510911] [2025-04-14 01:24:24,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264510911] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:24:24,312 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132656270] [2025-04-14 01:24:24,312 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-14 01:24:24,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:24:24,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:24:24,314 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:24:24,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-04-14 01:24:24,363 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 25 statements into 2 equivalence classes. [2025-04-14 01:24:24,378 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-04-14 01:24:24,378 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-14 01:24:24,378 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:24:24,379 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-04-14 01:24:24,380 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:24:24,978 INFO L189 IndexEqualityManager]: detected not equals via solver [2025-04-14 01:24:24,987 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-14 01:24:24,988 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 157 treesize of output 85 [2025-04-14 01:24:25,280 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:24:25,280 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:24:25,882 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-14 01:24:25,883 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 233 treesize of output 109 [2025-04-14 01:24:26,207 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-14 01:24:26,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132656270] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 01:24:26,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 01:24:26,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 10] total 32 [2025-04-14 01:24:26,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185317326] [2025-04-14 01:24:26,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 01:24:26,208 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-04-14 01:24:26,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:24:26,208 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-04-14 01:24:26,209 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=979, Unknown=0, NotChecked=0, Total=1122 [2025-04-14 01:24:26,209 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 32 [2025-04-14 01:24:26,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1034 places, 4502 transitions, 115740 flow. Second operand has 34 states, 34 states have (on average 4.970588235294118) internal successors, (169), 34 states have internal predecessors, (169), 0 states have call successors, (0), 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 01:24:26,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:24:26,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 32 [2025-04-14 01:24:26,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:24:48,711 INFO L116 PetriNetUnfolderBase]: 17364/25612 cut-off events. [2025-04-14 01:24:48,711 INFO L117 PetriNetUnfolderBase]: For 655694/655694 co-relation queries the response was YES. [2025-04-14 01:24:49,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309280 conditions, 25612 events. 17364/25612 cut-off events. For 655694/655694 co-relation queries the response was YES. Maximal size of possible extension queue 1493. Compared 168009 event pairs, 643 based on Foata normal form. 2/24821 useless extension candidates. Maximal degree in co-relation 308983. Up to 21941 conditions per place. [2025-04-14 01:24:49,867 INFO L140 encePairwiseOnDemand]: 15/32 looper letters, 3688 selfloop transitions, 1373 changer transitions 6/5067 dead transitions. [2025-04-14 01:24:49,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1084 places, 5067 transitions, 137984 flow [2025-04-14 01:24:49,867 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2025-04-14 01:24:49,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2025-04-14 01:24:49,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 523 transitions. [2025-04-14 01:24:49,868 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.30837264150943394 [2025-04-14 01:24:49,868 INFO L175 Difference]: Start difference. First operand has 1034 places, 4502 transitions, 115740 flow. Second operand 53 states and 523 transitions. [2025-04-14 01:24:49,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1084 places, 5067 transitions, 137984 flow [2025-04-14 01:25:18,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1053 places, 5067 transitions, 135684 flow, removed 596 selfloop flow, removed 31 redundant places. [2025-04-14 01:25:18,304 INFO L231 Difference]: Finished difference. Result has 1081 places, 4891 transitions, 128073 flow [2025-04-14 01:25:18,307 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=113594, PETRI_DIFFERENCE_MINUEND_PLACES=1001, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1040, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=128073, PETRI_PLACES=1081, PETRI_TRANSITIONS=4891} [2025-04-14 01:25:18,307 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 1050 predicate places. [2025-04-14 01:25:18,307 INFO L485 AbstractCegarLoop]: Abstraction has has 1081 places, 4891 transitions, 128073 flow [2025-04-14 01:25:18,308 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.970588235294118) internal successors, (169), 34 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:25:18,308 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:25:18,308 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:25:18,314 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2025-04-14 01:25:18,508 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2025-04-14 01:25:18,508 INFO L403 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:25:18,509 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:25:18,509 INFO L85 PathProgramCache]: Analyzing trace with hash 285180694, now seen corresponding path program 11 times [2025-04-14 01:25:18,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:25:18,510 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038808541] [2025-04-14 01:25:18,510 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 01:25:18,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:25:18,515 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-04-14 01:25:18,522 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-04-14 01:25:18,522 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:25:18,522 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:25:20,038 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:25:20,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:25:20,038 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038808541] [2025-04-14 01:25:20,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038808541] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:25:20,038 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540353665] [2025-04-14 01:25:20,038 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-14 01:25:20,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:25:20,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:25:20,040 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:25:20,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-04-14 01:25:20,095 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-04-14 01:25:20,110 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-04-14 01:25:20,110 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:25:20,111 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:25:20,112 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-04-14 01:25:20,112 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:25:20,923 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-14 01:25:20,924 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 141 treesize of output 77 [2025-04-14 01:25:21,034 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:25:21,034 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:25:21,622 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-14 01:25:21,622 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 233 treesize of output 109 [2025-04-14 01:25:21,807 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-14 01:25:21,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540353665] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 01:25:21,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 01:25:21,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 10] total 37 [2025-04-14 01:25:21,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533741596] [2025-04-14 01:25:21,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 01:25:21,808 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2025-04-14 01:25:21,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:25:21,808 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2025-04-14 01:25:21,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1334, Unknown=0, NotChecked=0, Total=1482 [2025-04-14 01:25:21,809 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 32 [2025-04-14 01:25:21,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1081 places, 4891 transitions, 128073 flow. Second operand has 39 states, 39 states have (on average 4.82051282051282) internal successors, (188), 39 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 01:25:21,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:25:21,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 32 [2025-04-14 01:25:21,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:25:55,013 INFO L116 PetriNetUnfolderBase]: 18864/27902 cut-off events. [2025-04-14 01:25:55,013 INFO L117 PetriNetUnfolderBase]: For 772011/772011 co-relation queries the response was YES. [2025-04-14 01:25:55,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346795 conditions, 27902 events. 18864/27902 cut-off events. For 772011/772011 co-relation queries the response was YES. Maximal size of possible extension queue 1644. Compared 186328 event pairs, 695 based on Foata normal form. 2/27006 useless extension candidates. Maximal degree in co-relation 346473. Up to 19318 conditions per place. [2025-04-14 01:25:55,719 INFO L140 encePairwiseOnDemand]: 13/32 looper letters, 3065 selfloop transitions, 2729 changer transitions 8/5802 dead transitions. [2025-04-14 01:25:55,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1187 places, 5802 transitions, 159288 flow [2025-04-14 01:25:55,720 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2025-04-14 01:25:55,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2025-04-14 01:25:55,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 988 transitions. [2025-04-14 01:25:55,721 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.2885514018691589 [2025-04-14 01:25:55,721 INFO L175 Difference]: Start difference. First operand has 1081 places, 4891 transitions, 128073 flow. Second operand 107 states and 988 transitions. [2025-04-14 01:25:55,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1187 places, 5802 transitions, 159288 flow [2025-04-14 01:26:31,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1178 places, 5802 transitions, 155949 flow, removed 1561 selfloop flow, removed 9 redundant places. [2025-04-14 01:26:31,802 INFO L231 Difference]: Finished difference. Result has 1202 places, 5475 transitions, 147925 flow [2025-04-14 01:26:31,805 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=126145, PETRI_DIFFERENCE_MINUEND_PLACES=1072, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4891, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2212, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=107, PETRI_FLOW=147925, PETRI_PLACES=1202, PETRI_TRANSITIONS=5475} [2025-04-14 01:26:31,805 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 1171 predicate places. [2025-04-14 01:26:31,805 INFO L485 AbstractCegarLoop]: Abstraction has has 1202 places, 5475 transitions, 147925 flow [2025-04-14 01:26:31,806 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 4.82051282051282) internal successors, (188), 39 states have internal predecessors, (188), 0 states have call successors, (0), 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 01:26:31,806 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:26:31,806 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:26:31,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2025-04-14 01:26:32,007 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2025-04-14 01:26:32,007 INFO L403 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:26:32,008 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:26:32,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1486415866, now seen corresponding path program 12 times [2025-04-14 01:26:32,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:26:32,008 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252845293] [2025-04-14 01:26:32,008 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-14 01:26:32,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:26:32,013 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 25 statements into 2 equivalence classes. [2025-04-14 01:26:32,020 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-04-14 01:26:32,020 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-14 01:26:32,020 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:26:32,789 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-14 01:26:32,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:26:32,789 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252845293] [2025-04-14 01:26:32,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252845293] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:26:32,789 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534938447] [2025-04-14 01:26:32,790 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-14 01:26:32,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:26:32,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:26:32,791 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:26:32,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-04-14 01:26:32,838 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 25 statements into 2 equivalence classes. [2025-04-14 01:26:32,853 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-04-14 01:26:32,853 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-14 01:26:32,853 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:26:32,854 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-04-14 01:26:32,854 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:26:33,392 INFO L189 IndexEqualityManager]: detected not equals via solver [2025-04-14 01:26:33,394 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-14 01:26:33,394 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 163 treesize of output 77 [2025-04-14 01:26:33,482 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-14 01:26:33,482 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:26:34,183 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-14 01:26:34,183 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 203 treesize of output 107 [2025-04-14 01:26:34,372 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-14 01:26:34,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534938447] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 01:26:34,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 01:26:34,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 11] total 32 [2025-04-14 01:26:34,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498661298] [2025-04-14 01:26:34,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 01:26:34,373 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-04-14 01:26:34,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:26:34,373 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-04-14 01:26:34,374 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=966, Unknown=0, NotChecked=0, Total=1122 [2025-04-14 01:26:34,374 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 32 [2025-04-14 01:26:34,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1202 places, 5475 transitions, 147925 flow. Second operand has 34 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 0 states have call successors, (0), 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 01:26:34,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:26:34,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 32 [2025-04-14 01:26:34,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:27:10,064 INFO L116 PetriNetUnfolderBase]: 20808/30790 cut-off events. [2025-04-14 01:27:10,064 INFO L117 PetriNetUnfolderBase]: For 887241/887241 co-relation queries the response was YES. [2025-04-14 01:27:11,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 394942 conditions, 30790 events. 20808/30790 cut-off events. For 887241/887241 co-relation queries the response was YES. Maximal size of possible extension queue 1813. Compared 209067 event pairs, 1026 based on Foata normal form. 2/29748 useless extension candidates. Maximal degree in co-relation 394596. Up to 21826 conditions per place. [2025-04-14 01:27:11,507 INFO L140 encePairwiseOnDemand]: 15/32 looper letters, 3452 selfloop transitions, 3007 changer transitions 10/6469 dead transitions. [2025-04-14 01:27:11,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1283 places, 6469 transitions, 184559 flow [2025-04-14 01:27:11,508 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2025-04-14 01:27:11,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2025-04-14 01:27:11,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 820 transitions. [2025-04-14 01:27:11,509 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.3125 [2025-04-14 01:27:11,509 INFO L175 Difference]: Start difference. First operand has 1202 places, 5475 transitions, 147925 flow. Second operand 82 states and 820 transitions. [2025-04-14 01:27:11,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1283 places, 6469 transitions, 184559 flow [2025-04-14 01:28:01,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1255 places, 6469 transitions, 178406 flow, removed 2568 selfloop flow, removed 28 redundant places. [2025-04-14 01:28:01,215 INFO L231 Difference]: Finished difference. Result has 1283 places, 6209 transitions, 172342 flow [2025-04-14 01:28:01,218 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=143657, PETRI_DIFFERENCE_MINUEND_PLACES=1174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2370, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2843, PETRI_DIFFERENCE_SUBTRAHEND_STATES=82, PETRI_FLOW=172342, PETRI_PLACES=1283, PETRI_TRANSITIONS=6209} [2025-04-14 01:28:01,218 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 1252 predicate places. [2025-04-14 01:28:01,219 INFO L485 AbstractCegarLoop]: Abstraction has has 1283 places, 6209 transitions, 172342 flow [2025-04-14 01:28:01,219 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 0 states have call successors, (0), 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 01:28:01,219 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:28:01,219 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:28:01,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2025-04-14 01:28:01,419 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:28:01,420 INFO L403 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:28:01,421 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:28:01,421 INFO L85 PathProgramCache]: Analyzing trace with hash -562020926, now seen corresponding path program 13 times [2025-04-14 01:28:01,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:28:01,421 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464226692] [2025-04-14 01:28:01,421 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-14 01:28:01,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:28:01,427 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-04-14 01:28:01,444 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-04-14 01:28:01,444 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:28:01,444 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:28:02,283 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 01:28:02,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:28:02,283 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464226692] [2025-04-14 01:28:02,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464226692] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:28:02,283 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942769443] [2025-04-14 01:28:02,283 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-14 01:28:02,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:28:02,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:28:02,285 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:28:02,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-04-14 01:28:02,333 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-04-14 01:28:02,346 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-04-14 01:28:02,346 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 01:28:02,346 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:28:02,347 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-04-14 01:28:02,348 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:28:02,804 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-14 01:28:02,804 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 163 treesize of output 77 [2025-04-14 01:28:02,863 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-14 01:28:02,863 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:28:03,359 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-14 01:28:03,359 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 315 treesize of output 159 [2025-04-14 01:28:03,980 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-14 01:28:03,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942769443] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 01:28:03,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 01:28:03,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 9] total 33 [2025-04-14 01:28:03,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325045009] [2025-04-14 01:28:03,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 01:28:03,981 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-04-14 01:28:03,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:28:03,981 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-04-14 01:28:03,981 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1071, Unknown=0, NotChecked=0, Total=1190 [2025-04-14 01:28:03,981 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 32 [2025-04-14 01:28:03,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1283 places, 6209 transitions, 172342 flow. Second operand has 35 states, 35 states have (on average 5.0285714285714285) internal successors, (176), 35 states have internal predecessors, (176), 0 states have call successors, (0), 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 01:28:03,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:28:03,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 32 [2025-04-14 01:28:03,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:28:42,505 INFO L116 PetriNetUnfolderBase]: 20995/31110 cut-off events. [2025-04-14 01:28:42,505 INFO L117 PetriNetUnfolderBase]: For 951430/951430 co-relation queries the response was YES. [2025-04-14 01:28:44,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 408375 conditions, 31110 events. 20995/31110 cut-off events. For 951430/951430 co-relation queries the response was YES. Maximal size of possible extension queue 1830. Compared 212250 event pairs, 943 based on Foata normal form. 4/30056 useless extension candidates. Maximal degree in co-relation 408003. Up to 28795 conditions per place. [2025-04-14 01:28:44,535 INFO L140 encePairwiseOnDemand]: 16/32 looper letters, 5568 selfloop transitions, 845 changer transitions 12/6425 dead transitions. [2025-04-14 01:28:44,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1319 places, 6425 transitions, 187703 flow [2025-04-14 01:28:44,536 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2025-04-14 01:28:44,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2025-04-14 01:28:44,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 395 transitions. [2025-04-14 01:28:44,537 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.31650641025641024 [2025-04-14 01:28:44,537 INFO L175 Difference]: Start difference. First operand has 1283 places, 6209 transitions, 172342 flow. Second operand 39 states and 395 transitions. [2025-04-14 01:28:44,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1319 places, 6425 transitions, 187703 flow [2025-04-14 01:29:38,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1281 places, 6425 transitions, 183288 flow, removed 1633 selfloop flow, removed 38 redundant places. [2025-04-14 01:29:38,344 INFO L231 Difference]: Finished difference. Result has 1292 places, 6278 transitions, 171083 flow [2025-04-14 01:29:38,348 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=167977, PETRI_DIFFERENCE_MINUEND_PLACES=1243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=787, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=171083, PETRI_PLACES=1292, PETRI_TRANSITIONS=6278} [2025-04-14 01:29:38,348 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 1261 predicate places. [2025-04-14 01:29:38,348 INFO L485 AbstractCegarLoop]: Abstraction has has 1292 places, 6278 transitions, 171083 flow [2025-04-14 01:29:38,348 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 5.0285714285714285) internal successors, (176), 35 states have internal predecessors, (176), 0 states have call successors, (0), 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 01:29:38,349 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-14 01:29:38,349 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-14 01:29:38,355 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2025-04-14 01:29:38,549 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:29:38,549 INFO L403 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-14 01:29:38,550 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 01:29:38,550 INFO L85 PathProgramCache]: Analyzing trace with hash -11745970, now seen corresponding path program 14 times [2025-04-14 01:29:38,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 01:29:38,550 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609819093] [2025-04-14 01:29:38,550 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 01:29:38,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 01:29:38,555 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-04-14 01:29:38,563 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-04-14 01:29:38,563 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:29:38,563 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:29:39,085 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-14 01:29:39,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 01:29:39,085 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609819093] [2025-04-14 01:29:39,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609819093] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 01:29:39,085 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463230334] [2025-04-14 01:29:39,085 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 01:29:39,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:29:39,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 01:29:39,087 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 01:29:39,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2025-04-14 01:29:39,137 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-04-14 01:29:39,151 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-04-14 01:29:39,151 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 01:29:39,151 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 01:29:39,152 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-04-14 01:29:39,152 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 01:29:39,527 INFO L189 IndexEqualityManager]: detected not equals via solver [2025-04-14 01:29:39,528 INFO L189 IndexEqualityManager]: detected not equals via solver [2025-04-14 01:29:39,532 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-14 01:29:39,532 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 166 treesize of output 82 [2025-04-14 01:29:39,779 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-14 01:29:39,779 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 01:29:40,353 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-14 01:29:40,354 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 203 treesize of output 107 [2025-04-14 01:29:40,540 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-14 01:29:40,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463230334] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 01:29:40,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 01:29:40,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 11] total 30 [2025-04-14 01:29:40,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607452458] [2025-04-14 01:29:40,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 01:29:40,541 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-04-14 01:29:40,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 01:29:40,541 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-04-14 01:29:40,541 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=854, Unknown=0, NotChecked=0, Total=992 [2025-04-14 01:29:40,541 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 32 [2025-04-14 01:29:40,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1292 places, 6278 transitions, 171083 flow. Second operand has 32 states, 32 states have (on average 4.78125) internal successors, (153), 32 states have internal predecessors, (153), 0 states have call successors, (0), 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 01:29:40,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-14 01:29:40,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 32 [2025-04-14 01:29:40,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-14 01:30:22,157 INFO L116 PetriNetUnfolderBase]: 21301/31586 cut-off events. [2025-04-14 01:30:22,157 INFO L117 PetriNetUnfolderBase]: For 944741/944741 co-relation queries the response was YES. [2025-04-14 01:30:23,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409693 conditions, 31586 events. 21301/31586 cut-off events. For 944741/944741 co-relation queries the response was YES. Maximal size of possible extension queue 1855. Compared 216029 event pairs, 898 based on Foata normal form. 2/30513 useless extension candidates. Maximal degree in co-relation 409318. Up to 26223 conditions per place. [2025-04-14 01:30:23,876 INFO L140 encePairwiseOnDemand]: 15/32 looper letters, 4821 selfloop transitions, 1778 changer transitions 10/6609 dead transitions. [2025-04-14 01:30:23,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1334 places, 6609 transitions, 189344 flow [2025-04-14 01:30:23,876 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2025-04-14 01:30:23,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2025-04-14 01:30:23,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 449 transitions. [2025-04-14 01:30:23,877 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.31889204545454547 [2025-04-14 01:30:23,877 INFO L175 Difference]: Start difference. First operand has 1292 places, 6278 transitions, 171083 flow. Second operand 44 states and 449 transitions. [2025-04-14 01:30:23,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1334 places, 6609 transitions, 189344 flow Received shutdown request... [2025-04-14 01:30:43,337 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2025-04-14 01:30:43,337 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2025-04-14 01:30:43,397 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2025-04-14 01:30:43,405 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2025-04-14 01:30:43,599 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 01:30:43,601 WARN L610 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2025-04-14 01:30:43,609 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2025-04-14 01:30:43,609 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-04-14 01:30:43,609 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2025-04-14 01:30:43,609 INFO L422 BasicCegarLoop]: Path program histogram: [22, 14, 5, 1, 1, 1, 1, 1] [2025-04-14 01:30:43,617 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-14 01:30:43,617 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-14 01:30:43,627 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.04 01:30:43 BasicIcfg [2025-04-14 01:30:43,627 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-14 01:30:43,627 INFO L158 Benchmark]: Toolchain (without parser) took 768873.76ms. Allocated memory was 142.6MB in the beginning and 5.5GB in the end (delta: 5.4GB). Free memory was 98.7MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 4.1GB. Max. memory is 8.0GB. [2025-04-14 01:30:43,628 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 159.4MB. Free memory is still 87.7MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-14 01:30:43,628 INFO L158 Benchmark]: CACSL2BoogieTranslator took 254.37ms. Allocated memory is still 142.6MB. Free memory was 98.7MB in the beginning and 84.3MB in the end (delta: 14.4MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2025-04-14 01:30:43,628 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.82ms. Allocated memory is still 142.6MB. Free memory was 84.3MB in the beginning and 81.8MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-14 01:30:43,628 INFO L158 Benchmark]: Boogie Preprocessor took 40.82ms. Allocated memory is still 142.6MB. Free memory was 81.8MB in the beginning and 80.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-14 01:30:43,628 INFO L158 Benchmark]: IcfgBuilder took 515.88ms. Allocated memory is still 142.6MB. Free memory was 80.1MB in the beginning and 33.2MB in the end (delta: 46.9MB). Peak memory consumption was 46.1MB. Max. memory is 8.0GB. [2025-04-14 01:30:43,628 INFO L158 Benchmark]: TraceAbstraction took 768026.60ms. Allocated memory was 142.6MB in the beginning and 5.5GB in the end (delta: 5.4GB). Free memory was 32.3MB in the beginning and 1.7GB in the end (delta: -1.7GB). Peak memory consumption was 4.0GB. Max. memory is 8.0GB. [2025-04-14 01:30:43,633 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 159.4MB. Free memory is still 87.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 254.37ms. Allocated memory is still 142.6MB. Free memory was 98.7MB in the beginning and 84.3MB in the end (delta: 14.4MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 30.82ms. Allocated memory is still 142.6MB. Free memory was 84.3MB in the beginning and 81.8MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 40.82ms. Allocated memory is still 142.6MB. Free memory was 81.8MB in the beginning and 80.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 8.0GB. * IcfgBuilder took 515.88ms. Allocated memory is still 142.6MB. Free memory was 80.1MB in the beginning and 33.2MB in the end (delta: 46.9MB). Peak memory consumption was 46.1MB. Max. memory is 8.0GB. * TraceAbstraction took 768026.60ms. Allocated memory was 142.6MB in the beginning and 5.5GB in the end (delta: 5.4GB). Free memory was 32.3MB in the beginning and 1.7GB in the end (delta: -1.7GB). Peak memory consumption was 4.0GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 41 locations, 53 edges, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 767.9s, OverallIterations: 46, TraceHistogramMax: 2, PathProgramHistogramMax: 22, EmptinessCheckTime: 0.0s, AutomataDifference: 712.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9510 SdHoareTripleChecker+Valid, 34.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9510 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 29.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2231 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 60622 IncrementalHoareTripleChecker+Invalid, 62853 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2231 mSolverCounterUnsat, 0 mSDtfsCounter, 60622 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2761 GetRequests, 865 SyntacticMatches, 24 SemanticMatches, 1872 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42464 ImplicationChecksByTransitivity, 73.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=172342occurred in iteration=44, InterpolantAutomatonStates: 1446, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 47.3s InterpolantComputationTime, 1671 NumberOfCodeBlocks, 1652 NumberOfCodeBlocksAsserted, 114 NumberOfCheckSat, 2236 ConstructedInterpolants, 0 QuantifiedInterpolants, 64374 SizeOfPredicates, 359 NumberOfNonLiveVariables, 5205 ConjunctsInSsa, 627 ConjunctsInUnsatCore, 104 InterpolantComputations, 21 PerfectInterpolantSequences, 154/327 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown