./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3855d6da0b439f4c6a497e897f140f408df8c7fd65e3042f0fafae1979048a3d --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 06:37:10,754 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 06:37:10,804 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 06:37:10,810 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 06:37:10,810 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 06:37:10,830 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 06:37:10,831 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 06:37:10,831 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 06:37:10,832 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 06:37:10,832 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 06:37:10,832 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 06:37:10,833 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 06:37:10,833 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 06:37:10,833 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 06:37:10,833 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 06:37:10,834 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 06:37:10,834 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 06:37:10,834 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 06:37:10,834 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 06:37:10,834 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 06:37:10,834 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 06:37:10,834 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 06:37:10,834 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 06:37:10,834 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 06:37:10,834 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 06:37:10,834 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 06:37:10,834 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 06:37:10,835 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 06:37:10,835 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 06:37:10,835 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 06:37:10,835 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 06:37:10,835 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 06:37:10,835 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:37:10,836 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 06:37:10,836 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 06:37:10,836 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 06:37:10,836 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 06:37:10,836 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 06:37:10,836 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 06:37:10,836 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 06:37:10,836 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 06:37:10,836 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 06:37:10,836 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 06:37:10,836 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3855d6da0b439f4c6a497e897f140f408df8c7fd65e3042f0fafae1979048a3d [2025-03-17 06:37:11,045 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 06:37:11,051 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 06:37:11,053 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 06:37:11,056 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 06:37:11,056 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 06:37:11,057 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c [2025-03-17 06:37:12,224 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5946652c/7c8397f91fe3496485207fc8d926dcb4/FLAG7b639835a [2025-03-17 06:37:12,465 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 06:37:12,467 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c [2025-03-17 06:37:12,497 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5946652c/7c8397f91fe3496485207fc8d926dcb4/FLAG7b639835a [2025-03-17 06:37:12,799 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5946652c/7c8397f91fe3496485207fc8d926dcb4 [2025-03-17 06:37:12,801 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 06:37:12,803 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 06:37:12,804 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 06:37:12,804 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 06:37:12,808 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 06:37:12,809 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:37:12" (1/1) ... [2025-03-17 06:37:12,811 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4add3508 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:37:12, skipping insertion in model container [2025-03-17 06:37:12,811 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:37:12" (1/1) ... [2025-03-17 06:37:12,826 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 06:37:12,961 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c[4875,4888] [2025-03-17 06:37:12,973 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:37:12,984 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 06:37:13,013 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c[4875,4888] [2025-03-17 06:37:13,016 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:37:13,026 INFO L204 MainTranslator]: Completed translation [2025-03-17 06:37:13,027 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:37:13 WrapperNode [2025-03-17 06:37:13,027 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 06:37:13,028 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 06:37:13,028 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 06:37:13,028 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 06:37:13,032 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:37:13" (1/1) ... [2025-03-17 06:37:13,039 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:37:13" (1/1) ... [2025-03-17 06:37:13,065 INFO L138 Inliner]: procedures = 25, calls = 29, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 298 [2025-03-17 06:37:13,066 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 06:37:13,066 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 06:37:13,066 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 06:37:13,066 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 06:37:13,074 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:37:13" (1/1) ... [2025-03-17 06:37:13,074 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:37:13" (1/1) ... [2025-03-17 06:37:13,077 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:37:13" (1/1) ... [2025-03-17 06:37:13,090 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 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]. [2025-03-17 06:37:13,093 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:37:13" (1/1) ... [2025-03-17 06:37:13,093 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:37:13" (1/1) ... [2025-03-17 06:37:13,103 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:37:13" (1/1) ... [2025-03-17 06:37:13,108 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:37:13" (1/1) ... [2025-03-17 06:37:13,109 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:37:13" (1/1) ... [2025-03-17 06:37:13,110 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:37:13" (1/1) ... [2025-03-17 06:37:13,114 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 06:37:13,114 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 06:37:13,114 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 06:37:13,114 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 06:37:13,115 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:37:13" (1/1) ... [2025-03-17 06:37:13,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:37:13,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:37:13,140 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) [2025-03-17 06:37:13,142 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 [2025-03-17 06:37:13,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 06:37:13,159 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-17 06:37:13,159 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-17 06:37:13,159 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-17 06:37:13,159 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-17 06:37:13,159 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-17 06:37:13,159 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-17 06:37:13,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 06:37:13,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 06:37:13,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 06:37:13,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 06:37:13,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 06:37:13,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 06:37:13,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 06:37:13,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 06:37:13,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 06:37:13,161 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 06:37:13,239 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 06:37:13,241 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 06:37:13,690 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 06:37:13,690 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 06:37:13,965 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 06:37:13,965 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 06:37:13,966 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:37:13 BoogieIcfgContainer [2025-03-17 06:37:13,966 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 06:37:13,967 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 06:37:13,968 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 06:37:13,971 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 06:37:13,971 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 06:37:12" (1/3) ... [2025-03-17 06:37:13,972 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77df4b22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:37:13, skipping insertion in model container [2025-03-17 06:37:13,972 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:37:13" (2/3) ... [2025-03-17 06:37:13,972 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77df4b22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:37:13, skipping insertion in model container [2025-03-17 06:37:13,972 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:37:13" (3/3) ... [2025-03-17 06:37:13,973 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-subst.wvr.c [2025-03-17 06:37:13,985 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 06:37:13,986 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-name-comparator-subst.wvr.c that has 4 procedures, 30 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2025-03-17 06:37:13,986 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 06:37:14,040 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-17 06:37:14,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 36 transitions, 93 flow [2025-03-17 06:37:14,099 INFO L124 PetriNetUnfolderBase]: 7/33 cut-off events. [2025-03-17 06:37:14,103 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-17 06:37:14,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 33 events. 7/33 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2025-03-17 06:37:14,108 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 36 transitions, 93 flow [2025-03-17 06:37:14,110 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 32 transitions, 82 flow [2025-03-17 06:37:14,115 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 06:37:14,125 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1363b13, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 06:37:14,125 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-03-17 06:37:14,140 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 06:37:14,140 INFO L124 PetriNetUnfolderBase]: 7/31 cut-off events. [2025-03-17 06:37:14,140 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-17 06:37:14,141 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:37:14,141 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] [2025-03-17 06:37:14,142 INFO L396 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)] === [2025-03-17 06:37:14,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:37:14,146 INFO L85 PathProgramCache]: Analyzing trace with hash -291174678, now seen corresponding path program 1 times [2025-03-17 06:37:14,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:37:14,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931061741] [2025-03-17 06:37:14,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:37:14,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:37:14,245 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-17 06:37:14,272 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-17 06:37:14,273 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:37:14,273 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:37:14,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:37:14,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:37:14,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931061741] [2025-03-17 06:37:14,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931061741] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:37:14,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:37:14,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 06:37:14,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991772178] [2025-03-17 06:37:14,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:37:14,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 06:37:14,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:37:14,571 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 06:37:14,572 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 06:37:14,573 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2025-03-17 06:37:14,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 32 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:37:14,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:37:14,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2025-03-17 06:37:14,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:37:14,834 INFO L124 PetriNetUnfolderBase]: 792/1138 cut-off events. [2025-03-17 06:37:14,835 INFO L125 PetriNetUnfolderBase]: For 88/88 co-relation queries the response was YES. [2025-03-17 06:37:14,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2373 conditions, 1138 events. 792/1138 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3707 event pairs, 608 based on Foata normal form. 0/954 useless extension candidates. Maximal degree in co-relation 2150. Up to 1137 conditions per place. [2025-03-17 06:37:14,842 INFO L140 encePairwiseOnDemand]: 30/36 looper letters, 27 selfloop transitions, 2 changer transitions 0/30 dead transitions. [2025-03-17 06:37:14,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 30 transitions, 136 flow [2025-03-17 06:37:14,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 06:37:14,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 06:37:14,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 45 transitions. [2025-03-17 06:37:14,852 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2025-03-17 06:37:14,853 INFO L175 Difference]: Start difference. First operand has 35 places, 32 transitions, 82 flow. Second operand 3 states and 45 transitions. [2025-03-17 06:37:14,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 30 transitions, 136 flow [2025-03-17 06:37:14,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 124 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-03-17 06:37:14,860 INFO L231 Difference]: Finished difference. Result has 32 places, 30 transitions, 76 flow [2025-03-17 06:37:14,862 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=32, PETRI_TRANSITIONS=30} [2025-03-17 06:37:14,864 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, -3 predicate places. [2025-03-17 06:37:14,865 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 30 transitions, 76 flow [2025-03-17 06:37:14,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:37:14,865 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:37:14,865 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:37:14,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 06:37:14,865 INFO L396 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)] === [2025-03-17 06:37:14,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:37:14,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1964301941, now seen corresponding path program 1 times [2025-03-17 06:37:14,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:37:14,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929018922] [2025-03-17 06:37:14,866 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:37:14,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:37:14,880 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-17 06:37:14,904 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-17 06:37:14,904 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:37:14,905 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:37:15,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:37:15,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:37:15,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929018922] [2025-03-17 06:37:15,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929018922] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:37:15,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268876636] [2025-03-17 06:37:15,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:37:15,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:37:15,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:37:15,080 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) [2025-03-17 06:37:15,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 06:37:15,166 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-17 06:37:15,200 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-17 06:37:15,200 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:37:15,200 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:37:15,203 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 06:37:15,205 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:37:15,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:37:15,253 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:37:15,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:37:15,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268876636] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 06:37:15,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 06:37:15,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2025-03-17 06:37:15,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990202584] [2025-03-17 06:37:15,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 06:37:15,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 06:37:15,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:37:15,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 06:37:15,281 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2025-03-17 06:37:15,281 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2025-03-17 06:37:15,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 30 transitions, 76 flow. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:37:15,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:37:15,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2025-03-17 06:37:15,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:37:15,504 INFO L124 PetriNetUnfolderBase]: 792/1140 cut-off events. [2025-03-17 06:37:15,505 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2025-03-17 06:37:15,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2321 conditions, 1140 events. 792/1140 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3717 event pairs, 608 based on Foata normal form. 0/956 useless extension candidates. Maximal degree in co-relation 2310. Up to 1137 conditions per place. [2025-03-17 06:37:15,515 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 27 selfloop transitions, 4 changer transitions 0/32 dead transitions. [2025-03-17 06:37:15,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 32 transitions, 146 flow [2025-03-17 06:37:15,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 06:37:15,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 06:37:15,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 53 transitions. [2025-03-17 06:37:15,518 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.29444444444444445 [2025-03-17 06:37:15,518 INFO L175 Difference]: Start difference. First operand has 32 places, 30 transitions, 76 flow. Second operand 5 states and 53 transitions. [2025-03-17 06:37:15,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 32 transitions, 146 flow [2025-03-17 06:37:15,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 32 transitions, 142 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-03-17 06:37:15,520 INFO L231 Difference]: Finished difference. Result has 37 places, 32 transitions, 98 flow [2025-03-17 06:37:15,520 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=98, PETRI_PLACES=37, PETRI_TRANSITIONS=32} [2025-03-17 06:37:15,520 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 2 predicate places. [2025-03-17 06:37:15,520 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 98 flow [2025-03-17 06:37:15,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:37:15,520 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:37:15,520 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:37:15,529 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 06:37:15,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:37:15,726 INFO L396 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)] === [2025-03-17 06:37:15,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:37:15,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1605931147, now seen corresponding path program 2 times [2025-03-17 06:37:15,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:37:15,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681366749] [2025-03-17 06:37:15,728 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:37:15,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:37:15,744 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-03-17 06:37:15,823 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 25 of 28 statements. [2025-03-17 06:37:15,823 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 06:37:15,823 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:37:16,386 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-17 06:37:16,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:37:16,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681366749] [2025-03-17 06:37:16,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681366749] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:37:16,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:37:16,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 06:37:16,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078560332] [2025-03-17 06:37:16,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:37:16,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 06:37:16,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:37:16,388 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 06:37:16,389 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-17 06:37:16,389 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2025-03-17 06:37:16,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 98 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:37:16,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:37:16,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2025-03-17 06:37:16,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:37:16,815 INFO L124 PetriNetUnfolderBase]: 1926/2789 cut-off events. [2025-03-17 06:37:16,815 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2025-03-17 06:37:16,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5645 conditions, 2789 events. 1926/2789 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 11954 event pairs, 608 based on Foata normal form. 1/2306 useless extension candidates. Maximal degree in co-relation 5618. Up to 1184 conditions per place. [2025-03-17 06:37:16,827 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 75 selfloop transitions, 7 changer transitions 11/94 dead transitions. [2025-03-17 06:37:16,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 94 transitions, 421 flow [2025-03-17 06:37:16,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 06:37:16,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 06:37:16,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2025-03-17 06:37:16,829 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5324074074074074 [2025-03-17 06:37:16,830 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 98 flow. Second operand 6 states and 115 transitions. [2025-03-17 06:37:16,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 94 transitions, 421 flow [2025-03-17 06:37:16,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 94 transitions, 411 flow, removed 4 selfloop flow, removed 1 redundant places. [2025-03-17 06:37:16,832 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 139 flow [2025-03-17 06:37:16,833 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=139, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2025-03-17 06:37:16,833 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 10 predicate places. [2025-03-17 06:37:16,833 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 139 flow [2025-03-17 06:37:16,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:37:16,833 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:37:16,833 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:37:16,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 06:37:16,835 INFO L396 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)] === [2025-03-17 06:37:16,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:37:16,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1189030969, now seen corresponding path program 3 times [2025-03-17 06:37:16,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:37:16,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499495535] [2025-03-17 06:37:16,836 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 06:37:16,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:37:16,849 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 28 statements into 3 equivalence classes. [2025-03-17 06:37:16,875 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 25 of 28 statements. [2025-03-17 06:37:16,875 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-17 06:37:16,875 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:37:17,377 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-17 06:37:17,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:37:17,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499495535] [2025-03-17 06:37:17,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499495535] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:37:17,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:37:17,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 06:37:17,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620448973] [2025-03-17 06:37:17,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:37:17,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 06:37:17,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:37:17,379 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 06:37:17,379 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-17 06:37:17,379 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2025-03-17 06:37:17,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 139 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:37:17,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:37:17,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2025-03-17 06:37:17,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:37:18,133 INFO L124 PetriNetUnfolderBase]: 3751/5506 cut-off events. [2025-03-17 06:37:18,133 INFO L125 PetriNetUnfolderBase]: For 2402/2402 co-relation queries the response was YES. [2025-03-17 06:37:18,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13522 conditions, 5506 events. 3751/5506 cut-off events. For 2402/2402 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 27881 event pairs, 1525 based on Foata normal form. 1/5207 useless extension candidates. Maximal degree in co-relation 13495. Up to 2756 conditions per place. [2025-03-17 06:37:18,161 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 110 selfloop transitions, 11 changer transitions 4/126 dead transitions. [2025-03-17 06:37:18,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 126 transitions, 711 flow [2025-03-17 06:37:18,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 06:37:18,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 06:37:18,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2025-03-17 06:37:18,164 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49603174603174605 [2025-03-17 06:37:18,164 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 139 flow. Second operand 7 states and 125 transitions. [2025-03-17 06:37:18,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 126 transitions, 711 flow [2025-03-17 06:37:18,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 126 transitions, 705 flow, removed 3 selfloop flow, removed 1 redundant places. [2025-03-17 06:37:18,178 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 247 flow [2025-03-17 06:37:18,178 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=247, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2025-03-17 06:37:18,179 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 19 predicate places. [2025-03-17 06:37:18,179 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 247 flow [2025-03-17 06:37:18,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:37:18,180 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:37:18,180 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:37:18,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 06:37:18,180 INFO L396 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)] === [2025-03-17 06:37:18,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:37:18,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1570536557, now seen corresponding path program 4 times [2025-03-17 06:37:18,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:37:18,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250461045] [2025-03-17 06:37:18,181 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 06:37:18,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:37:18,194 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 28 statements into 2 equivalence classes. [2025-03-17 06:37:18,221 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-03-17 06:37:18,221 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 06:37:18,221 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:37:18,670 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-17 06:37:18,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:37:18,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250461045] [2025-03-17 06:37:18,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250461045] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:37:18,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:37:18,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 06:37:18,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058774972] [2025-03-17 06:37:18,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:37:18,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 06:37:18,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:37:18,672 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 06:37:18,672 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-17 06:37:18,672 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2025-03-17 06:37:18,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 247 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:37:18,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:37:18,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2025-03-17 06:37:18,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:37:19,616 INFO L124 PetriNetUnfolderBase]: 5698/8334 cut-off events. [2025-03-17 06:37:19,617 INFO L125 PetriNetUnfolderBase]: For 8386/8386 co-relation queries the response was YES. [2025-03-17 06:37:19,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23713 conditions, 8334 events. 5698/8334 cut-off events. For 8386/8386 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 43298 event pairs, 2209 based on Foata normal form. 1/8335 useless extension candidates. Maximal degree in co-relation 23681. Up to 3833 conditions per place. [2025-03-17 06:37:19,652 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 94 selfloop transitions, 27 changer transitions 2/124 dead transitions. [2025-03-17 06:37:19,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 124 transitions, 783 flow [2025-03-17 06:37:19,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 06:37:19,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 06:37:19,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2025-03-17 06:37:19,654 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49603174603174605 [2025-03-17 06:37:19,654 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 247 flow. Second operand 7 states and 125 transitions. [2025-03-17 06:37:19,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 124 transitions, 783 flow [2025-03-17 06:37:19,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 124 transitions, 774 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 06:37:19,664 INFO L231 Difference]: Finished difference. Result has 64 places, 64 transitions, 466 flow [2025-03-17 06:37:19,665 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=466, PETRI_PLACES=64, PETRI_TRANSITIONS=64} [2025-03-17 06:37:19,665 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 29 predicate places. [2025-03-17 06:37:19,665 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 64 transitions, 466 flow [2025-03-17 06:37:19,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:37:19,665 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:37:19,666 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:37:19,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 06:37:19,666 INFO L396 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)] === [2025-03-17 06:37:19,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:37:19,666 INFO L85 PathProgramCache]: Analyzing trace with hash 704879733, now seen corresponding path program 5 times [2025-03-17 06:37:19,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:37:19,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539842643] [2025-03-17 06:37:19,666 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 06:37:19,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:37:19,677 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 28 statements into 3 equivalence classes. [2025-03-17 06:37:19,700 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 28 of 28 statements. [2025-03-17 06:37:19,704 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-03-17 06:37:19,705 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:37:20,586 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-17 06:37:20,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:37:20,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539842643] [2025-03-17 06:37:20,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539842643] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:37:20,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566773486] [2025-03-17 06:37:20,587 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 06:37:20,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:37:20,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:37:20,590 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) [2025-03-17 06:37:20,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 06:37:20,671 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 28 statements into 3 equivalence classes. [2025-03-17 06:37:20,704 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 28 of 28 statements. [2025-03-17 06:37:20,705 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-03-17 06:37:20,705 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:37:20,706 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-17 06:37:20,709 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:37:20,998 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-17 06:37:20,999 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:37:20,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566773486] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:37:20,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:37:20,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 12 [2025-03-17 06:37:20,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074837697] [2025-03-17 06:37:20,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:37:20,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 06:37:21,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:37:21,000 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 06:37:21,000 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2025-03-17 06:37:21,000 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2025-03-17 06:37:21,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 64 transitions, 466 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:37:21,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:37:21,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2025-03-17 06:37:21,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:37:21,854 INFO L124 PetriNetUnfolderBase]: 5698/8328 cut-off events. [2025-03-17 06:37:21,855 INFO L125 PetriNetUnfolderBase]: For 18727/18727 co-relation queries the response was YES. [2025-03-17 06:37:21,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27829 conditions, 8328 events. 5698/8328 cut-off events. For 18727/18727 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 44135 event pairs, 2290 based on Foata normal form. 3/8331 useless extension candidates. Maximal degree in co-relation 27792. Up to 3757 conditions per place. [2025-03-17 06:37:21,896 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 102 selfloop transitions, 19 changer transitions 15/137 dead transitions. [2025-03-17 06:37:21,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 137 transitions, 1127 flow [2025-03-17 06:37:21,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 06:37:21,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 06:37:21,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2025-03-17 06:37:21,897 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5046296296296297 [2025-03-17 06:37:21,897 INFO L175 Difference]: Start difference. First operand has 64 places, 64 transitions, 466 flow. Second operand 6 states and 109 transitions. [2025-03-17 06:37:21,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 137 transitions, 1127 flow [2025-03-17 06:37:21,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 137 transitions, 1101 flow, removed 13 selfloop flow, removed 0 redundant places. [2025-03-17 06:37:21,938 INFO L231 Difference]: Finished difference. Result has 73 places, 69 transitions, 588 flow [2025-03-17 06:37:21,938 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=588, PETRI_PLACES=73, PETRI_TRANSITIONS=69} [2025-03-17 06:37:21,939 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 38 predicate places. [2025-03-17 06:37:21,939 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 69 transitions, 588 flow [2025-03-17 06:37:21,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:37:21,940 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:37:21,940 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:37:21,951 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-17 06:37:22,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-03-17 06:37:22,140 INFO L396 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)] === [2025-03-17 06:37:22,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:37:22,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1753990339, now seen corresponding path program 6 times [2025-03-17 06:37:22,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:37:22,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153232183] [2025-03-17 06:37:22,141 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 06:37:22,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:37:22,164 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 28 statements into 3 equivalence classes. [2025-03-17 06:37:22,193 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 25 of 28 statements. [2025-03-17 06:37:22,193 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-17 06:37:22,193 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:37:22,644 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-17 06:37:22,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:37:22,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153232183] [2025-03-17 06:37:22,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153232183] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:37:22,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:37:22,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 06:37:22,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076193737] [2025-03-17 06:37:22,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:37:22,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 06:37:22,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:37:22,645 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 06:37:22,645 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-17 06:37:22,645 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2025-03-17 06:37:22,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 69 transitions, 588 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:37:22,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:37:22,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2025-03-17 06:37:22,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:37:23,763 INFO L124 PetriNetUnfolderBase]: 5958/8771 cut-off events. [2025-03-17 06:37:23,763 INFO L125 PetriNetUnfolderBase]: For 30811/30811 co-relation queries the response was YES. [2025-03-17 06:37:23,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31697 conditions, 8771 events. 5958/8771 cut-off events. For 30811/30811 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 48415 event pairs, 2361 based on Foata normal form. 1/8772 useless extension candidates. Maximal degree in co-relation 31655. Up to 4232 conditions per place. [2025-03-17 06:37:23,823 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 152 selfloop transitions, 20 changer transitions 2/175 dead transitions. [2025-03-17 06:37:23,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 175 transitions, 1727 flow [2025-03-17 06:37:23,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 06:37:23,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 06:37:23,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2025-03-17 06:37:23,828 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2025-03-17 06:37:23,828 INFO L175 Difference]: Start difference. First operand has 73 places, 69 transitions, 588 flow. Second operand 7 states and 129 transitions. [2025-03-17 06:37:23,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 175 transitions, 1727 flow [2025-03-17 06:37:23,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 175 transitions, 1695 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-03-17 06:37:23,868 INFO L231 Difference]: Finished difference. Result has 80 places, 81 transitions, 827 flow [2025-03-17 06:37:23,868 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=827, PETRI_PLACES=80, PETRI_TRANSITIONS=81} [2025-03-17 06:37:23,868 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 45 predicate places. [2025-03-17 06:37:23,868 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 81 transitions, 827 flow [2025-03-17 06:37:23,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:37:23,869 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:37:23,869 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:37:23,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 06:37:23,869 INFO L396 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)] === [2025-03-17 06:37:23,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:37:23,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1049068487, now seen corresponding path program 7 times [2025-03-17 06:37:23,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:37:23,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903203251] [2025-03-17 06:37:23,872 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 06:37:23,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:37:23,887 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-17 06:37:23,922 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-17 06:37:23,922 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:37:23,922 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:37:24,352 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-17 06:37:24,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:37:24,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903203251] [2025-03-17 06:37:24,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903203251] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:37:24,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:37:24,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 06:37:24,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641059340] [2025-03-17 06:37:24,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:37:24,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 06:37:24,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:37:24,355 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 06:37:24,355 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-17 06:37:24,355 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2025-03-17 06:37:24,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 81 transitions, 827 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:37:24,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:37:24,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2025-03-17 06:37:24,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:37:25,408 INFO L124 PetriNetUnfolderBase]: 6004/8858 cut-off events. [2025-03-17 06:37:25,408 INFO L125 PetriNetUnfolderBase]: For 35788/35788 co-relation queries the response was YES. [2025-03-17 06:37:25,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33187 conditions, 8858 events. 6004/8858 cut-off events. For 35788/35788 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 48351 event pairs, 2195 based on Foata normal form. 1/8859 useless extension candidates. Maximal degree in co-relation 33142. Up to 3801 conditions per place. [2025-03-17 06:37:25,447 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 103 selfloop transitions, 38 changer transitions 4/146 dead transitions. [2025-03-17 06:37:25,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 146 transitions, 1413 flow [2025-03-17 06:37:25,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 06:37:25,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 06:37:25,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2025-03-17 06:37:25,449 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48412698412698413 [2025-03-17 06:37:25,449 INFO L175 Difference]: Start difference. First operand has 80 places, 81 transitions, 827 flow. Second operand 7 states and 122 transitions. [2025-03-17 06:37:25,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 146 transitions, 1413 flow [2025-03-17 06:37:25,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 146 transitions, 1385 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 06:37:25,521 INFO L231 Difference]: Finished difference. Result has 87 places, 86 transitions, 958 flow [2025-03-17 06:37:25,522 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=817, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=958, PETRI_PLACES=87, PETRI_TRANSITIONS=86} [2025-03-17 06:37:25,522 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 52 predicate places. [2025-03-17 06:37:25,524 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 86 transitions, 958 flow [2025-03-17 06:37:25,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:37:25,524 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:37:25,524 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:37:25,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 06:37:25,524 INFO L396 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)] === [2025-03-17 06:37:25,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:37:25,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1056014089, now seen corresponding path program 8 times [2025-03-17 06:37:25,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:37:25,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447935419] [2025-03-17 06:37:25,525 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:37:25,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:37:25,536 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-03-17 06:37:25,546 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 25 of 28 statements. [2025-03-17 06:37:25,546 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 06:37:25,546 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:37:25,798 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-17 06:37:25,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:37:25,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447935419] [2025-03-17 06:37:25,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447935419] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:37:25,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:37:25,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 06:37:25,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186748325] [2025-03-17 06:37:25,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:37:25,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 06:37:25,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:37:25,800 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 06:37:25,800 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-17 06:37:25,800 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2025-03-17 06:37:25,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 86 transitions, 958 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:37:25,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:37:25,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2025-03-17 06:37:25,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:37:26,633 INFO L124 PetriNetUnfolderBase]: 6004/8852 cut-off events. [2025-03-17 06:37:26,634 INFO L125 PetriNetUnfolderBase]: For 41637/41637 co-relation queries the response was YES. [2025-03-17 06:37:26,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34407 conditions, 8852 events. 6004/8852 cut-off events. For 41637/41637 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 48323 event pairs, 2275 based on Foata normal form. 3/8855 useless extension candidates. Maximal degree in co-relation 34359. Up to 3801 conditions per place. [2025-03-17 06:37:26,691 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 96 selfloop transitions, 37 changer transitions 16/150 dead transitions. [2025-03-17 06:37:26,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 150 transitions, 1610 flow [2025-03-17 06:37:26,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 06:37:26,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 06:37:26,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 110 transitions. [2025-03-17 06:37:26,693 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5092592592592593 [2025-03-17 06:37:26,693 INFO L175 Difference]: Start difference. First operand has 87 places, 86 transitions, 958 flow. Second operand 6 states and 110 transitions. [2025-03-17 06:37:26,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 150 transitions, 1610 flow [2025-03-17 06:37:26,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 150 transitions, 1516 flow, removed 8 selfloop flow, removed 4 redundant places. [2025-03-17 06:37:26,779 INFO L231 Difference]: Finished difference. Result has 91 places, 90 transitions, 1029 flow [2025-03-17 06:37:26,779 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=878, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1029, PETRI_PLACES=91, PETRI_TRANSITIONS=90} [2025-03-17 06:37:26,779 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 56 predicate places. [2025-03-17 06:37:26,779 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 90 transitions, 1029 flow [2025-03-17 06:37:26,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:37:26,780 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:37:26,780 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:37:26,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 06:37:26,780 INFO L396 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)] === [2025-03-17 06:37:26,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:37:26,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1496009317, now seen corresponding path program 9 times [2025-03-17 06:37:26,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:37:26,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042491295] [2025-03-17 06:37:26,781 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 06:37:26,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:37:26,789 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 28 statements into 3 equivalence classes. [2025-03-17 06:37:26,800 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 25 of 28 statements. [2025-03-17 06:37:26,800 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-17 06:37:26,800 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:37:26,995 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-17 06:37:26,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:37:26,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042491295] [2025-03-17 06:37:26,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042491295] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:37:26,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:37:26,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 06:37:26,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422397401] [2025-03-17 06:37:26,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:37:26,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 06:37:26,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:37:26,998 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 06:37:26,998 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-17 06:37:26,999 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2025-03-17 06:37:26,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 90 transitions, 1029 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:37:26,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:37:26,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2025-03-17 06:37:26,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:37:27,889 INFO L124 PetriNetUnfolderBase]: 5975/8807 cut-off events. [2025-03-17 06:37:27,891 INFO L125 PetriNetUnfolderBase]: For 44875/44875 co-relation queries the response was YES. [2025-03-17 06:37:27,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34850 conditions, 8807 events. 5975/8807 cut-off events. For 44875/44875 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 47108 event pairs, 2536 based on Foata normal form. 3/8810 useless extension candidates. Maximal degree in co-relation 34799. Up to 4048 conditions per place. [2025-03-17 06:37:27,955 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 102 selfloop transitions, 35 changer transitions 13/151 dead transitions. [2025-03-17 06:37:27,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 151 transitions, 1696 flow [2025-03-17 06:37:27,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 06:37:27,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 06:37:27,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2025-03-17 06:37:27,956 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2025-03-17 06:37:27,956 INFO L175 Difference]: Start difference. First operand has 91 places, 90 transitions, 1029 flow. Second operand 6 states and 105 transitions. [2025-03-17 06:37:27,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 151 transitions, 1696 flow [2025-03-17 06:37:28,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 151 transitions, 1615 flow, removed 11 selfloop flow, removed 4 redundant places. [2025-03-17 06:37:28,044 INFO L231 Difference]: Finished difference. Result has 95 places, 95 transitions, 1169 flow [2025-03-17 06:37:28,045 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=964, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1169, PETRI_PLACES=95, PETRI_TRANSITIONS=95} [2025-03-17 06:37:28,045 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 60 predicate places. [2025-03-17 06:37:28,045 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 95 transitions, 1169 flow [2025-03-17 06:37:28,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:37:28,045 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:37:28,046 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:37:28,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-17 06:37:28,046 INFO L396 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)] === [2025-03-17 06:37:28,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:37:28,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1915545373, now seen corresponding path program 10 times [2025-03-17 06:37:28,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:37:28,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719315309] [2025-03-17 06:37:28,046 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 06:37:28,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:37:28,056 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 28 statements into 2 equivalence classes. [2025-03-17 06:37:28,067 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-03-17 06:37:28,067 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 06:37:28,068 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:37:28,430 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-17 06:37:28,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:37:28,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719315309] [2025-03-17 06:37:28,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719315309] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:37:28,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:37:28,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 06:37:28,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514035640] [2025-03-17 06:37:28,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:37:28,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 06:37:28,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:37:28,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 06:37:28,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-17 06:37:28,431 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2025-03-17 06:37:28,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 95 transitions, 1169 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:37:28,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:37:28,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2025-03-17 06:37:28,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:37:29,677 INFO L124 PetriNetUnfolderBase]: 5942/8738 cut-off events. [2025-03-17 06:37:29,677 INFO L125 PetriNetUnfolderBase]: For 50830/50830 co-relation queries the response was YES. [2025-03-17 06:37:29,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35573 conditions, 8738 events. 5942/8738 cut-off events. For 50830/50830 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 48204 event pairs, 2348 based on Foata normal form. 1/8739 useless extension candidates. Maximal degree in co-relation 35520. Up to 4197 conditions per place. [2025-03-17 06:37:29,746 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 169 selfloop transitions, 29 changer transitions 2/201 dead transitions. [2025-03-17 06:37:29,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 201 transitions, 2508 flow [2025-03-17 06:37:29,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 06:37:29,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 06:37:29,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2025-03-17 06:37:29,747 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5158730158730159 [2025-03-17 06:37:29,747 INFO L175 Difference]: Start difference. First operand has 95 places, 95 transitions, 1169 flow. Second operand 7 states and 130 transitions. [2025-03-17 06:37:29,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 201 transitions, 2508 flow [2025-03-17 06:37:29,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 201 transitions, 2450 flow, removed 11 selfloop flow, removed 2 redundant places. [2025-03-17 06:37:29,868 INFO L231 Difference]: Finished difference. Result has 101 places, 99 transitions, 1300 flow [2025-03-17 06:37:29,871 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1140, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1300, PETRI_PLACES=101, PETRI_TRANSITIONS=99} [2025-03-17 06:37:29,871 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 66 predicate places. [2025-03-17 06:37:29,871 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 99 transitions, 1300 flow [2025-03-17 06:37:29,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:37:29,871 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:37:29,872 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:37:29,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-17 06:37:29,872 INFO L396 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)] === [2025-03-17 06:37:29,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:37:29,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1465519611, now seen corresponding path program 11 times [2025-03-17 06:37:29,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:37:29,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901287082] [2025-03-17 06:37:29,874 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 06:37:29,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:37:29,885 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 28 statements into 3 equivalence classes. [2025-03-17 06:37:29,906 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 28 of 28 statements. [2025-03-17 06:37:29,907 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-03-17 06:37:29,908 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:37:30,297 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-17 06:37:30,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:37:30,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901287082] [2025-03-17 06:37:30,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901287082] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:37:30,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782654261] [2025-03-17 06:37:30,298 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 06:37:30,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:37:30,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:37:30,302 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) [2025-03-17 06:37:30,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 06:37:30,382 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 28 statements into 3 equivalence classes. [2025-03-17 06:37:30,409 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 28 of 28 statements. [2025-03-17 06:37:30,410 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-03-17 06:37:30,410 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:37:30,411 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-03-17 06:37:30,414 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:37:30,785 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-17 06:37:30,785 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:37:30,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782654261] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:37:30,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:37:30,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 12 [2025-03-17 06:37:30,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795619854] [2025-03-17 06:37:30,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:37:30,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 06:37:30,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:37:30,786 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 06:37:30,786 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2025-03-17 06:37:30,786 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2025-03-17 06:37:30,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 99 transitions, 1300 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:37:30,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:37:30,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2025-03-17 06:37:30,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:37:31,814 INFO L124 PetriNetUnfolderBase]: 6352/9371 cut-off events. [2025-03-17 06:37:31,814 INFO L125 PetriNetUnfolderBase]: For 56681/56681 co-relation queries the response was YES. [2025-03-17 06:37:31,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38682 conditions, 9371 events. 6352/9371 cut-off events. For 56681/56681 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 50895 event pairs, 2404 based on Foata normal form. 2/9373 useless extension candidates. Maximal degree in co-relation 38627. Up to 4085 conditions per place. [2025-03-17 06:37:31,884 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 116 selfloop transitions, 52 changer transitions 4/173 dead transitions. [2025-03-17 06:37:31,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 173 transitions, 2064 flow [2025-03-17 06:37:31,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 06:37:31,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 06:37:31,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2025-03-17 06:37:31,885 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2025-03-17 06:37:31,885 INFO L175 Difference]: Start difference. First operand has 101 places, 99 transitions, 1300 flow. Second operand 7 states and 132 transitions. [2025-03-17 06:37:31,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 173 transitions, 2064 flow [2025-03-17 06:37:32,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 173 transitions, 1991 flow, removed 11 selfloop flow, removed 3 redundant places. [2025-03-17 06:37:32,006 INFO L231 Difference]: Finished difference. Result has 108 places, 109 transitions, 1526 flow [2025-03-17 06:37:32,006 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1255, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1526, PETRI_PLACES=108, PETRI_TRANSITIONS=109} [2025-03-17 06:37:32,007 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 73 predicate places. [2025-03-17 06:37:32,007 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 109 transitions, 1526 flow [2025-03-17 06:37:32,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:37:32,007 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:37:32,007 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:37:32,013 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-17 06:37:32,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:37:32,208 INFO L396 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)] === [2025-03-17 06:37:32,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:37:32,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1484557961, now seen corresponding path program 12 times [2025-03-17 06:37:32,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:37:32,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224733064] [2025-03-17 06:37:32,208 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 06:37:32,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:37:32,215 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 28 statements into 3 equivalence classes. [2025-03-17 06:37:32,226 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 25 of 28 statements. [2025-03-17 06:37:32,226 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-17 06:37:32,226 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:37:32,459 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-17 06:37:32,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:37:32,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224733064] [2025-03-17 06:37:32,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224733064] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:37:32,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:37:32,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 06:37:32,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965815800] [2025-03-17 06:37:32,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:37:32,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 06:37:32,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:37:32,462 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 06:37:32,462 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-17 06:37:32,462 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2025-03-17 06:37:32,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 109 transitions, 1526 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:37:32,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:37:32,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2025-03-17 06:37:32,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:37:33,327 INFO L124 PetriNetUnfolderBase]: 6352/9359 cut-off events. [2025-03-17 06:37:33,327 INFO L125 PetriNetUnfolderBase]: For 63382/63382 co-relation queries the response was YES. [2025-03-17 06:37:33,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40004 conditions, 9359 events. 6352/9359 cut-off events. For 63382/63382 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 50763 event pairs, 2432 based on Foata normal form. 6/9365 useless extension candidates. Maximal degree in co-relation 39945. Up to 4085 conditions per place. [2025-03-17 06:37:33,402 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 100 selfloop transitions, 48 changer transitions 19/168 dead transitions. [2025-03-17 06:37:33,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 168 transitions, 2183 flow [2025-03-17 06:37:33,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 06:37:33,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 06:37:33,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2025-03-17 06:37:33,403 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2025-03-17 06:37:33,403 INFO L175 Difference]: Start difference. First operand has 108 places, 109 transitions, 1526 flow. Second operand 6 states and 111 transitions. [2025-03-17 06:37:33,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 168 transitions, 2183 flow [2025-03-17 06:37:33,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 168 transitions, 2123 flow, removed 18 selfloop flow, removed 1 redundant places. [2025-03-17 06:37:33,527 INFO L231 Difference]: Finished difference. Result has 113 places, 105 transitions, 1528 flow [2025-03-17 06:37:33,527 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1476, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1528, PETRI_PLACES=113, PETRI_TRANSITIONS=105} [2025-03-17 06:37:33,527 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 78 predicate places. [2025-03-17 06:37:33,527 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 105 transitions, 1528 flow [2025-03-17 06:37:33,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:37:33,528 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:37:33,528 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:37:33,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-17 06:37:33,528 INFO L396 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)] === [2025-03-17 06:37:33,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:37:33,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1040447361, now seen corresponding path program 13 times [2025-03-17 06:37:33,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:37:33,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615424816] [2025-03-17 06:37:33,529 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 06:37:33,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:37:33,535 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-17 06:37:33,545 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-17 06:37:33,545 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:37:33,545 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:37:33,731 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-17 06:37:33,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:37:33,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615424816] [2025-03-17 06:37:33,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615424816] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:37:33,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:37:33,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 06:37:33,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69278780] [2025-03-17 06:37:33,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:37:33,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 06:37:33,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:37:33,732 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 06:37:33,732 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-17 06:37:33,732 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2025-03-17 06:37:33,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 105 transitions, 1528 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:37:33,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:37:33,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2025-03-17 06:37:33,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:37:34,602 INFO L124 PetriNetUnfolderBase]: 6291/9229 cut-off events. [2025-03-17 06:37:34,603 INFO L125 PetriNetUnfolderBase]: For 67169/67169 co-relation queries the response was YES. [2025-03-17 06:37:34,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39853 conditions, 9229 events. 6291/9229 cut-off events. For 67169/67169 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 49617 event pairs, 2514 based on Foata normal form. 4/9233 useless extension candidates. Maximal degree in co-relation 39793. Up to 4085 conditions per place. [2025-03-17 06:37:34,673 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 101 selfloop transitions, 49 changer transitions 19/170 dead transitions. [2025-03-17 06:37:34,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 170 transitions, 2302 flow [2025-03-17 06:37:34,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 06:37:34,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 06:37:34,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2025-03-17 06:37:34,674 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-03-17 06:37:34,674 INFO L175 Difference]: Start difference. First operand has 113 places, 105 transitions, 1528 flow. Second operand 6 states and 108 transitions. [2025-03-17 06:37:34,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 170 transitions, 2302 flow [2025-03-17 06:37:34,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 170 transitions, 2190 flow, removed 2 selfloop flow, removed 5 redundant places. [2025-03-17 06:37:34,795 INFO L231 Difference]: Finished difference. Result has 115 places, 109 transitions, 1624 flow [2025-03-17 06:37:34,796 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1430, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1624, PETRI_PLACES=115, PETRI_TRANSITIONS=109} [2025-03-17 06:37:34,796 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 80 predicate places. [2025-03-17 06:37:34,796 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 109 transitions, 1624 flow [2025-03-17 06:37:34,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:37:34,796 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:37:34,796 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:37:34,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-17 06:37:34,796 INFO L396 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)] === [2025-03-17 06:37:34,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:37:34,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1153601134, now seen corresponding path program 1 times [2025-03-17 06:37:34,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:37:34,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453605434] [2025-03-17 06:37:34,797 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:37:34,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:37:34,805 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-03-17 06:37:34,817 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-17 06:37:34,817 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:37:34,817 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:37:35,055 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-17 06:37:35,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:37:35,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453605434] [2025-03-17 06:37:35,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453605434] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:37:35,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:37:35,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 06:37:35,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092848737] [2025-03-17 06:37:35,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:37:35,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 06:37:35,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:37:35,057 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 06:37:35,057 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2025-03-17 06:37:35,057 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2025-03-17 06:37:35,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 109 transitions, 1624 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:37:35,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:37:35,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2025-03-17 06:37:35,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:37:36,633 INFO L124 PetriNetUnfolderBase]: 8782/12944 cut-off events. [2025-03-17 06:37:36,633 INFO L125 PetriNetUnfolderBase]: For 97530/97530 co-relation queries the response was YES. [2025-03-17 06:37:36,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55873 conditions, 12944 events. 8782/12944 cut-off events. For 97530/97530 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 76318 event pairs, 2579 based on Foata normal form. 13/12957 useless extension candidates. Maximal degree in co-relation 55811. Up to 4334 conditions per place. [2025-03-17 06:37:36,695 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 232 selfloop transitions, 28 changer transitions 1/262 dead transitions. [2025-03-17 06:37:36,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 262 transitions, 3852 flow [2025-03-17 06:37:36,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 06:37:36,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 06:37:36,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2025-03-17 06:37:36,696 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5634920634920635 [2025-03-17 06:37:36,696 INFO L175 Difference]: Start difference. First operand has 115 places, 109 transitions, 1624 flow. Second operand 7 states and 142 transitions. [2025-03-17 06:37:36,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 262 transitions, 3852 flow [2025-03-17 06:37:36,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 262 transitions, 3550 flow, removed 38 selfloop flow, removed 5 redundant places. [2025-03-17 06:37:36,833 INFO L231 Difference]: Finished difference. Result has 120 places, 123 transitions, 1826 flow [2025-03-17 06:37:36,834 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1487, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1826, PETRI_PLACES=120, PETRI_TRANSITIONS=123} [2025-03-17 06:37:36,834 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 85 predicate places. [2025-03-17 06:37:36,834 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 123 transitions, 1826 flow [2025-03-17 06:37:36,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:37:36,834 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:37:36,834 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:37:36,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-17 06:37:36,835 INFO L396 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)] === [2025-03-17 06:37:36,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:37:36,835 INFO L85 PathProgramCache]: Analyzing trace with hash 907447370, now seen corresponding path program 2 times [2025-03-17 06:37:36,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:37:36,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915358302] [2025-03-17 06:37:36,835 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:37:36,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:37:36,841 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-03-17 06:37:36,851 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-03-17 06:37:36,851 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 06:37:36,851 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:37:36,992 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-17 06:37:36,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:37:36,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915358302] [2025-03-17 06:37:36,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915358302] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:37:36,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:37:36,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-17 06:37:36,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631990357] [2025-03-17 06:37:36,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:37:36,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 06:37:36,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:37:36,993 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 06:37:36,993 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-17 06:37:36,993 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2025-03-17 06:37:36,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 123 transitions, 1826 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:37:36,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:37:36,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2025-03-17 06:37:36,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:37:38,422 INFO L124 PetriNetUnfolderBase]: 10302/15193 cut-off events. [2025-03-17 06:37:38,422 INFO L125 PetriNetUnfolderBase]: For 110945/110945 co-relation queries the response was YES. [2025-03-17 06:37:38,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66084 conditions, 15193 events. 10302/15193 cut-off events. For 110945/110945 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 91256 event pairs, 1697 based on Foata normal form. 8/15201 useless extension candidates. Maximal degree in co-relation 66019. Up to 6575 conditions per place. [2025-03-17 06:37:38,550 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 166 selfloop transitions, 48 changer transitions 1/216 dead transitions. [2025-03-17 06:37:38,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 216 transitions, 2943 flow [2025-03-17 06:37:38,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 06:37:38,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 06:37:38,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2025-03-17 06:37:38,551 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5158730158730159 [2025-03-17 06:37:38,551 INFO L175 Difference]: Start difference. First operand has 120 places, 123 transitions, 1826 flow. Second operand 7 states and 130 transitions. [2025-03-17 06:37:38,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 216 transitions, 2943 flow [2025-03-17 06:37:38,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 216 transitions, 2877 flow, removed 22 selfloop flow, removed 1 redundant places. [2025-03-17 06:37:38,967 INFO L231 Difference]: Finished difference. Result has 129 places, 131 transitions, 2081 flow [2025-03-17 06:37:38,968 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1802, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2081, PETRI_PLACES=129, PETRI_TRANSITIONS=131} [2025-03-17 06:37:38,968 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 94 predicate places. [2025-03-17 06:37:38,968 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 131 transitions, 2081 flow [2025-03-17 06:37:38,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:37:38,968 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:37:38,968 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:37:38,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-17 06:37:38,968 INFO L396 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)] === [2025-03-17 06:37:38,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:37:38,969 INFO L85 PathProgramCache]: Analyzing trace with hash -691353736, now seen corresponding path program 1 times [2025-03-17 06:37:38,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:37:38,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28545437] [2025-03-17 06:37:38,969 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:37:38,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:37:38,976 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-03-17 06:37:38,989 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-17 06:37:38,989 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:37:38,989 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:37:39,196 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-17 06:37:39,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:37:39,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28545437] [2025-03-17 06:37:39,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28545437] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:37:39,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:37:39,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-17 06:37:39,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877548841] [2025-03-17 06:37:39,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:37:39,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 06:37:39,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:37:39,197 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 06:37:39,197 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2025-03-17 06:37:39,197 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2025-03-17 06:37:39,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 131 transitions, 2081 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:37:39,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:37:39,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2025-03-17 06:37:39,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:37:41,306 INFO L124 PetriNetUnfolderBase]: 14653/21544 cut-off events. [2025-03-17 06:37:41,307 INFO L125 PetriNetUnfolderBase]: For 176068/176068 co-relation queries the response was YES. [2025-03-17 06:37:41,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94592 conditions, 21544 events. 14653/21544 cut-off events. For 176068/176068 co-relation queries the response was YES. Maximal size of possible extension queue 953. Compared 136166 event pairs, 4337 based on Foata normal form. 8/21552 useless extension candidates. Maximal degree in co-relation 94523. Up to 7180 conditions per place. [2025-03-17 06:37:41,458 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 219 selfloop transitions, 53 changer transitions 1/274 dead transitions. [2025-03-17 06:37:41,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 274 transitions, 4212 flow [2025-03-17 06:37:41,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 06:37:41,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 06:37:41,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2025-03-17 06:37:41,459 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5634920634920635 [2025-03-17 06:37:41,459 INFO L175 Difference]: Start difference. First operand has 129 places, 131 transitions, 2081 flow. Second operand 7 states and 142 transitions. [2025-03-17 06:37:41,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 274 transitions, 4212 flow [2025-03-17 06:37:42,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 274 transitions, 4068 flow, removed 30 selfloop flow, removed 2 redundant places. [2025-03-17 06:37:42,087 INFO L231 Difference]: Finished difference. Result has 138 places, 154 transitions, 2565 flow [2025-03-17 06:37:42,087 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1996, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2565, PETRI_PLACES=138, PETRI_TRANSITIONS=154} [2025-03-17 06:37:42,088 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 103 predicate places. [2025-03-17 06:37:42,088 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 154 transitions, 2565 flow [2025-03-17 06:37:42,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:37:42,088 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:37:42,088 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:37:42,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-17 06:37:42,088 INFO L396 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)] === [2025-03-17 06:37:42,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:37:42,089 INFO L85 PathProgramCache]: Analyzing trace with hash -808297546, now seen corresponding path program 3 times [2025-03-17 06:37:42,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:37:42,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399863801] [2025-03-17 06:37:42,089 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 06:37:42,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:37:42,096 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 30 statements into 3 equivalence classes. [2025-03-17 06:37:42,108 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 29 of 30 statements. [2025-03-17 06:37:42,108 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-17 06:37:42,108 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:37:42,330 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-17 06:37:42,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:37:42,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399863801] [2025-03-17 06:37:42,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399863801] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:37:42,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:37:42,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 06:37:42,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737030824] [2025-03-17 06:37:42,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:37:42,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 06:37:42,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:37:42,331 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 06:37:42,332 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-17 06:37:42,332 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2025-03-17 06:37:42,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 154 transitions, 2565 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:37:42,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:37:42,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2025-03-17 06:37:42,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:37:45,268 INFO L124 PetriNetUnfolderBase]: 14640/21531 cut-off events. [2025-03-17 06:37:45,268 INFO L125 PetriNetUnfolderBase]: For 188427/188427 co-relation queries the response was YES. [2025-03-17 06:37:45,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97928 conditions, 21531 events. 14640/21531 cut-off events. For 188427/188427 co-relation queries the response was YES. Maximal size of possible extension queue 945. Compared 136074 event pairs, 2657 based on Foata normal form. 13/21544 useless extension candidates. Maximal degree in co-relation 97854. Up to 9426 conditions per place. [2025-03-17 06:37:45,478 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 188 selfloop transitions, 58 changer transitions 1/248 dead transitions. [2025-03-17 06:37:45,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 248 transitions, 3785 flow [2025-03-17 06:37:45,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 06:37:45,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 06:37:45,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2025-03-17 06:37:45,480 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2025-03-17 06:37:45,480 INFO L175 Difference]: Start difference. First operand has 138 places, 154 transitions, 2565 flow. Second operand 7 states and 135 transitions. [2025-03-17 06:37:45,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 248 transitions, 3785 flow [2025-03-17 06:37:46,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 248 transitions, 3724 flow, removed 14 selfloop flow, removed 1 redundant places. [2025-03-17 06:37:46,344 INFO L231 Difference]: Finished difference. Result has 146 places, 159 transitions, 2755 flow [2025-03-17 06:37:46,344 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2525, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2755, PETRI_PLACES=146, PETRI_TRANSITIONS=159} [2025-03-17 06:37:46,345 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 111 predicate places. [2025-03-17 06:37:46,345 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 159 transitions, 2755 flow [2025-03-17 06:37:46,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:37:46,345 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:37:46,345 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:37:46,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-17 06:37:46,345 INFO L396 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)] === [2025-03-17 06:37:46,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:37:46,346 INFO L85 PathProgramCache]: Analyzing trace with hash 997968598, now seen corresponding path program 4 times [2025-03-17 06:37:46,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:37:46,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931079616] [2025-03-17 06:37:46,346 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 06:37:46,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:37:46,355 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 30 statements into 2 equivalence classes. [2025-03-17 06:37:46,359 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-03-17 06:37:46,359 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 06:37:46,359 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:37:46,495 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-17 06:37:46,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:37:46,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931079616] [2025-03-17 06:37:46,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931079616] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:37:46,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:37:46,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-17 06:37:46,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851686531] [2025-03-17 06:37:46,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:37:46,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 06:37:46,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:37:46,497 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 06:37:46,497 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-17 06:37:46,497 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2025-03-17 06:37:46,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 159 transitions, 2755 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:37:46,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:37:46,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2025-03-17 06:37:46,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:37:49,073 INFO L124 PetriNetUnfolderBase]: 15026/22165 cut-off events. [2025-03-17 06:37:49,073 INFO L125 PetriNetUnfolderBase]: For 212536/212536 co-relation queries the response was YES. [2025-03-17 06:37:49,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101896 conditions, 22165 events. 15026/22165 cut-off events. For 212536/212536 co-relation queries the response was YES. Maximal size of possible extension queue 954. Compared 141312 event pairs, 4301 based on Foata normal form. 26/22191 useless extension candidates. Maximal degree in co-relation 101819. Up to 6964 conditions per place. [2025-03-17 06:37:49,230 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 232 selfloop transitions, 62 changer transitions 1/296 dead transitions. [2025-03-17 06:37:49,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 296 transitions, 4829 flow [2025-03-17 06:37:49,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 06:37:49,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 06:37:49,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 146 transitions. [2025-03-17 06:37:49,231 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5793650793650794 [2025-03-17 06:37:49,231 INFO L175 Difference]: Start difference. First operand has 146 places, 159 transitions, 2755 flow. Second operand 7 states and 146 transitions. [2025-03-17 06:37:49,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 296 transitions, 4829 flow [2025-03-17 06:37:49,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 296 transitions, 4684 flow, removed 11 selfloop flow, removed 3 redundant places. [2025-03-17 06:37:49,732 INFO L231 Difference]: Finished difference. Result has 153 places, 173 transitions, 3135 flow [2025-03-17 06:37:49,732 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2637, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3135, PETRI_PLACES=153, PETRI_TRANSITIONS=173} [2025-03-17 06:37:49,733 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 118 predicate places. [2025-03-17 06:37:49,733 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 173 transitions, 3135 flow [2025-03-17 06:37:49,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:37:49,733 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:37:49,733 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:37:49,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-17 06:37:49,733 INFO L396 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)] === [2025-03-17 06:37:49,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:37:49,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1861051828, now seen corresponding path program 5 times [2025-03-17 06:37:49,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:37:49,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22043804] [2025-03-17 06:37:49,734 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 06:37:49,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:37:49,741 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 30 statements into 3 equivalence classes. [2025-03-17 06:37:49,751 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 30 of 30 statements. [2025-03-17 06:37:49,751 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-03-17 06:37:49,751 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:37:50,135 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-17 06:37:50,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:37:50,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22043804] [2025-03-17 06:37:50,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22043804] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:37:50,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513852436] [2025-03-17 06:37:50,135 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 06:37:50,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:37:50,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:37:50,137 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) [2025-03-17 06:37:50,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 06:37:50,209 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 30 statements into 3 equivalence classes. [2025-03-17 06:37:50,236 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 30 of 30 statements. [2025-03-17 06:37:50,236 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-03-17 06:37:50,236 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:37:50,238 INFO L256 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-17 06:37:50,239 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:37:50,369 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-17 06:37:50,370 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:37:50,465 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-17 06:37:50,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513852436] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-17 06:37:50,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-17 06:37:50,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 16 [2025-03-17 06:37:50,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112189990] [2025-03-17 06:37:50,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:37:50,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 06:37:50,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:37:50,466 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 06:37:50,466 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2025-03-17 06:37:50,466 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2025-03-17 06:37:50,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 173 transitions, 3135 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:37:50,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:37:50,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2025-03-17 06:37:50,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:37:54,182 INFO L124 PetriNetUnfolderBase]: 16674/24541 cut-off events. [2025-03-17 06:37:54,182 INFO L125 PetriNetUnfolderBase]: For 248484/248484 co-relation queries the response was YES. [2025-03-17 06:37:54,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114592 conditions, 24541 events. 16674/24541 cut-off events. For 248484/248484 co-relation queries the response was YES. Maximal size of possible extension queue 1049. Compared 157374 event pairs, 3399 based on Foata normal form. 13/24554 useless extension candidates. Maximal degree in co-relation 114511. Up to 11501 conditions per place. [2025-03-17 06:37:54,382 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 208 selfloop transitions, 63 changer transitions 1/273 dead transitions. [2025-03-17 06:37:54,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 273 transitions, 4516 flow [2025-03-17 06:37:54,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 06:37:54,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 06:37:54,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2025-03-17 06:37:54,383 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5595238095238095 [2025-03-17 06:37:54,383 INFO L175 Difference]: Start difference. First operand has 153 places, 173 transitions, 3135 flow. Second operand 7 states and 141 transitions. [2025-03-17 06:37:54,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 273 transitions, 4516 flow [2025-03-17 06:37:55,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 273 transitions, 4440 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-03-17 06:37:55,194 INFO L231 Difference]: Finished difference. Result has 161 places, 183 transitions, 3500 flow [2025-03-17 06:37:55,194 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3081, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3500, PETRI_PLACES=161, PETRI_TRANSITIONS=183} [2025-03-17 06:37:55,194 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 126 predicate places. [2025-03-17 06:37:55,194 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 183 transitions, 3500 flow [2025-03-17 06:37:55,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:37:55,194 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:37:55,194 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:37:55,201 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-17 06:37:55,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:37:55,395 INFO L396 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)] === [2025-03-17 06:37:55,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:37:55,395 INFO L85 PathProgramCache]: Analyzing trace with hash 994582208, now seen corresponding path program 2 times [2025-03-17 06:37:55,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:37:55,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149747541] [2025-03-17 06:37:55,396 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:37:55,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:37:55,405 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-03-17 06:37:55,422 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-03-17 06:37:55,422 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 06:37:55,422 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:37:55,689 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-17 06:37:55,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:37:55,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149747541] [2025-03-17 06:37:55,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149747541] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:37:55,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:37:55,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-17 06:37:55,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219044748] [2025-03-17 06:37:55,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:37:55,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 06:37:55,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:37:55,691 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 06:37:55,691 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2025-03-17 06:37:55,691 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2025-03-17 06:37:55,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 183 transitions, 3500 flow. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:37:55,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:37:55,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2025-03-17 06:37:55,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:37:59,481 INFO L124 PetriNetUnfolderBase]: 19310/28394 cut-off events. [2025-03-17 06:37:59,481 INFO L125 PetriNetUnfolderBase]: For 310787/310787 co-relation queries the response was YES. [2025-03-17 06:37:59,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133271 conditions, 28394 events. 19310/28394 cut-off events. For 310787/310787 co-relation queries the response was YES. Maximal size of possible extension queue 1176. Compared 183044 event pairs, 3503 based on Foata normal form. 8/28402 useless extension candidates. Maximal degree in co-relation 133186. Up to 15508 conditions per place. [2025-03-17 06:37:59,775 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 258 selfloop transitions, 61 changer transitions 1/321 dead transitions. [2025-03-17 06:37:59,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 321 transitions, 5999 flow [2025-03-17 06:37:59,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 06:37:59,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 06:37:59,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2025-03-17 06:37:59,776 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2025-03-17 06:37:59,776 INFO L175 Difference]: Start difference. First operand has 161 places, 183 transitions, 3500 flow. Second operand 7 states and 132 transitions. [2025-03-17 06:37:59,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 321 transitions, 5999 flow [2025-03-17 06:38:00,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 321 transitions, 5855 flow, removed 19 selfloop flow, removed 2 redundant places. [2025-03-17 06:38:00,833 INFO L231 Difference]: Finished difference. Result has 170 places, 208 transitions, 4125 flow [2025-03-17 06:38:00,833 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3408, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4125, PETRI_PLACES=170, PETRI_TRANSITIONS=208} [2025-03-17 06:38:00,833 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 135 predicate places. [2025-03-17 06:38:00,833 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 208 transitions, 4125 flow [2025-03-17 06:38:00,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:38:00,833 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:38:00,834 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:38:00,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-17 06:38:00,834 INFO L396 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)] === [2025-03-17 06:38:00,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:38:00,834 INFO L85 PathProgramCache]: Analyzing trace with hash -379781238, now seen corresponding path program 6 times [2025-03-17 06:38:00,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:38:00,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568100173] [2025-03-17 06:38:00,834 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 06:38:00,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:38:00,842 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 30 statements into 3 equivalence classes. [2025-03-17 06:38:00,860 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 30 of 30 statements. [2025-03-17 06:38:00,860 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-03-17 06:38:00,860 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:38:01,144 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-17 06:38:01,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:38:01,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568100173] [2025-03-17 06:38:01,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568100173] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:38:01,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:38:01,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-17 06:38:01,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990534970] [2025-03-17 06:38:01,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:38:01,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 06:38:01,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:38:01,147 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 06:38:01,147 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-17 06:38:01,147 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2025-03-17 06:38:01,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 208 transitions, 4125 flow. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:38:01,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:38:01,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2025-03-17 06:38:01,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:38:05,913 INFO L124 PetriNetUnfolderBase]: 20644/30618 cut-off events. [2025-03-17 06:38:05,913 INFO L125 PetriNetUnfolderBase]: For 355435/355435 co-relation queries the response was YES. [2025-03-17 06:38:06,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146511 conditions, 30618 events. 20644/30618 cut-off events. For 355435/355435 co-relation queries the response was YES. Maximal size of possible extension queue 1251. Compared 205245 event pairs, 4241 based on Foata normal form. 26/30644 useless extension candidates. Maximal degree in co-relation 146421. Up to 17330 conditions per place. [2025-03-17 06:38:06,190 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 296 selfloop transitions, 59 changer transitions 1/357 dead transitions. [2025-03-17 06:38:06,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 357 transitions, 6908 flow [2025-03-17 06:38:06,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 06:38:06,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 06:38:06,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2025-03-17 06:38:06,191 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2025-03-17 06:38:06,191 INFO L175 Difference]: Start difference. First operand has 170 places, 208 transitions, 4125 flow. Second operand 7 states and 129 transitions. [2025-03-17 06:38:06,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 357 transitions, 6908 flow [2025-03-17 06:38:07,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 357 transitions, 6834 flow, removed 37 selfloop flow, removed 0 redundant places. [2025-03-17 06:38:07,682 INFO L231 Difference]: Finished difference. Result has 181 places, 227 transitions, 4762 flow [2025-03-17 06:38:07,682 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4071, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4762, PETRI_PLACES=181, PETRI_TRANSITIONS=227} [2025-03-17 06:38:07,682 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 146 predicate places. [2025-03-17 06:38:07,683 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 227 transitions, 4762 flow [2025-03-17 06:38:07,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:38:07,683 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:38:07,683 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:38:07,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-17 06:38:07,683 INFO L396 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)] === [2025-03-17 06:38:07,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:38:07,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1988118856, now seen corresponding path program 7 times [2025-03-17 06:38:07,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:38:07,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635450987] [2025-03-17 06:38:07,683 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 06:38:07,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:38:07,692 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-03-17 06:38:07,714 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-17 06:38:07,714 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:38:07,714 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:38:07,990 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-17 06:38:07,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:38:07,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635450987] [2025-03-17 06:38:07,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635450987] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:38:07,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:38:07,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-17 06:38:07,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453758197] [2025-03-17 06:38:07,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:38:07,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 06:38:07,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:38:07,991 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 06:38:07,991 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-17 06:38:07,991 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2025-03-17 06:38:07,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 227 transitions, 4762 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:38:07,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:38:07,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2025-03-17 06:38:07,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand