./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-nzb-file-trans.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-nzb-file-trans.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 0d0975dc4466296431d96c26938a2e71864de63aba998f18ecd8a32ca341796b --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 06:37:27,062 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 06:37:27,107 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 06:37:27,110 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 06:37:27,111 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 06:37:27,123 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 06:37:27,124 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 06:37:27,124 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 06:37:27,124 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 06:37:27,124 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 06:37:27,125 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 06:37:27,125 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 06:37:27,125 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 06:37:27,125 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 06:37:27,125 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 06:37:27,125 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 06:37:27,125 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 06:37:27,125 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 06:37:27,125 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 06:37:27,126 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 06:37:27,126 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 06:37:27,126 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 06:37:27,126 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 06:37:27,126 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 06:37:27,126 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 06:37:27,126 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 06:37:27,126 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 06:37:27,126 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 06:37:27,126 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 06:37:27,126 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 06:37:27,127 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 06:37:27,127 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 06:37:27,127 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:37:27,127 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 06:37:27,127 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 06:37:27,127 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 06:37:27,127 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 06:37:27,127 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 06:37:27,127 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 06:37:27,127 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 06:37:27,127 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 06:37:27,128 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 06:37:27,128 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 06:37:27,128 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 -> 0d0975dc4466296431d96c26938a2e71864de63aba998f18ecd8a32ca341796b [2025-03-17 06:37:27,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 06:37:27,334 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 06:37:27,335 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 06:37:27,337 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 06:37:27,337 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 06:37:27,339 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c [2025-03-17 06:37:28,589 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7acad0eb6/9ed8b94bc0434ac6afae2f344ff7607d/FLAG641af069b [2025-03-17 06:37:28,803 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 06:37:28,804 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c [2025-03-17 06:37:28,810 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7acad0eb6/9ed8b94bc0434ac6afae2f344ff7607d/FLAG641af069b [2025-03-17 06:37:28,820 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7acad0eb6/9ed8b94bc0434ac6afae2f344ff7607d [2025-03-17 06:37:28,822 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 06:37:28,823 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 06:37:28,824 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 06:37:28,824 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 06:37:28,827 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 06:37:28,829 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:37:28" (1/1) ... [2025-03-17 06:37:28,829 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f7121df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:37:28, skipping insertion in model container [2025-03-17 06:37:28,829 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:37:28" (1/1) ... [2025-03-17 06:37:28,848 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 06:37:29,013 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-nzb-file-trans.wvr.c[6489,6502] [2025-03-17 06:37:29,024 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:37:29,035 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 06:37:29,079 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-nzb-file-trans.wvr.c[6489,6502] [2025-03-17 06:37:29,082 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:37:29,098 INFO L204 MainTranslator]: Completed translation [2025-03-17 06:37:29,099 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:37:29 WrapperNode [2025-03-17 06:37:29,099 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 06:37:29,100 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 06:37:29,100 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 06:37:29,100 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 06:37:29,106 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:37:29" (1/1) ... [2025-03-17 06:37:29,117 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:37:29" (1/1) ... [2025-03-17 06:37:29,151 INFO L138 Inliner]: procedures = 25, calls = 61, calls flagged for inlining = 28, calls inlined = 42, statements flattened = 591 [2025-03-17 06:37:29,151 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 06:37:29,152 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 06:37:29,152 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 06:37:29,152 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 06:37:29,158 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:37:29" (1/1) ... [2025-03-17 06:37:29,158 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:37:29" (1/1) ... [2025-03-17 06:37:29,166 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:37:29" (1/1) ... [2025-03-17 06:37:29,187 INFO L175 MemorySlicer]: Split 29 memory accesses to 2 slices as follows [2, 27]. 93 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2025-03-17 06:37:29,187 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:37:29" (1/1) ... [2025-03-17 06:37:29,187 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:37:29" (1/1) ... [2025-03-17 06:37:29,197 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:37:29" (1/1) ... [2025-03-17 06:37:29,198 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:37:29" (1/1) ... [2025-03-17 06:37:29,200 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:37:29" (1/1) ... [2025-03-17 06:37:29,201 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:37:29" (1/1) ... [2025-03-17 06:37:29,204 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 06:37:29,205 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 06:37:29,206 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 06:37:29,206 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 06:37:29,210 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:37:29" (1/1) ... [2025-03-17 06:37:29,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:37:29,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:37:29,231 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 06:37:29,236 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 06:37:29,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 06:37:29,253 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-17 06:37:29,253 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-17 06:37:29,253 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-17 06:37:29,253 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-17 06:37:29,253 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-17 06:37:29,253 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-17 06:37:29,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 06:37:29,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 06:37:29,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 06:37:29,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 06:37:29,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 06:37:29,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 06:37:29,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 06:37:29,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 06:37:29,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 06:37:29,254 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 06:37:29,349 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 06:37:29,350 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 06:37:29,952 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 06:37:29,952 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 06:37:30,493 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 06:37:30,494 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 06:37:30,494 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:37:30 BoogieIcfgContainer [2025-03-17 06:37:30,494 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 06:37:30,497 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 06:37:30,497 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 06:37:30,500 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 06:37:30,500 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 06:37:28" (1/3) ... [2025-03-17 06:37:30,501 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13e037b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:37:30, skipping insertion in model container [2025-03-17 06:37:30,501 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:37:29" (2/3) ... [2025-03-17 06:37:30,501 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13e037b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:37:30, skipping insertion in model container [2025-03-17 06:37:30,501 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:37:30" (3/3) ... [2025-03-17 06:37:30,502 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-trans.wvr.c [2025-03-17 06:37:30,513 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 06:37:30,514 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-nzb-file-trans.wvr.c that has 4 procedures, 38 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2025-03-17 06:37:30,515 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 06:37:30,634 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-17 06:37:30,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 49 transitions, 119 flow [2025-03-17 06:37:30,692 INFO L124 PetriNetUnfolderBase]: 12/46 cut-off events. [2025-03-17 06:37:30,694 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-17 06:37:30,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 12/46 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 74 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2025-03-17 06:37:30,697 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 49 transitions, 119 flow [2025-03-17 06:37:30,699 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 45 transitions, 108 flow [2025-03-17 06:37:30,710 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 06:37:30,718 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;@4df6893, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 06:37:30,718 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-03-17 06:37:30,734 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 06:37:30,735 INFO L124 PetriNetUnfolderBase]: 12/44 cut-off events. [2025-03-17 06:37:30,735 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-17 06:37:30,735 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:37:30,736 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] [2025-03-17 06:37:30,737 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 06:37:30,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:37:30,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1434096437, now seen corresponding path program 1 times [2025-03-17 06:37:30,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:37:30,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339026361] [2025-03-17 06:37:30,749 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:37:30,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:37:30,824 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-17 06:37:30,860 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-17 06:37:30,860 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:37:30,861 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:37:31,139 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 06:37:31,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:37:31,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339026361] [2025-03-17 06:37:31,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339026361] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:37:31,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:37:31,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 06:37:31,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605911591] [2025-03-17 06:37:31,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:37:31,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 06:37:31,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:37:31,166 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 06:37:31,167 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 06:37:31,168 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-17 06:37:31,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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 06:37:31,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:37:31,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-17 06:37:31,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:37:31,800 INFO L124 PetriNetUnfolderBase]: 2373/3237 cut-off events. [2025-03-17 06:37:31,800 INFO L125 PetriNetUnfolderBase]: For 187/187 co-relation queries the response was YES. [2025-03-17 06:37:31,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6649 conditions, 3237 events. 2373/3237 cut-off events. For 187/187 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 12282 event pairs, 1692 based on Foata normal form. 0/2556 useless extension candidates. Maximal degree in co-relation 6206. Up to 3234 conditions per place. [2025-03-17 06:37:31,820 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 38 selfloop transitions, 6 changer transitions 0/45 dead transitions. [2025-03-17 06:37:31,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 45 transitions, 196 flow [2025-03-17 06:37:31,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 06:37:31,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 06:37:31,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2025-03-17 06:37:31,832 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4217687074829932 [2025-03-17 06:37:31,833 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 108 flow. Second operand 3 states and 62 transitions. [2025-03-17 06:37:31,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 45 transitions, 196 flow [2025-03-17 06:37:31,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 45 transitions, 184 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-03-17 06:37:31,845 INFO L231 Difference]: Finished difference. Result has 40 places, 45 transitions, 122 flow [2025-03-17 06:37:31,847 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=40, PETRI_TRANSITIONS=45} [2025-03-17 06:37:31,851 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2025-03-17 06:37:31,851 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 45 transitions, 122 flow [2025-03-17 06:37:31,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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 06:37:31,853 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:37:31,853 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:37:31,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 06:37:31,853 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 06:37:31,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:37:31,854 INFO L85 PathProgramCache]: Analyzing trace with hash -478292189, now seen corresponding path program 1 times [2025-03-17 06:37:31,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:37:31,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764150958] [2025-03-17 06:37:31,854 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:37:31,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:37:31,879 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-17 06:37:31,911 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-17 06:37:31,914 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:37:31,915 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:37:32,122 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:37:32,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:37:32,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764150958] [2025-03-17 06:37:32,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764150958] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:37:32,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46786457] [2025-03-17 06:37:32,123 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:37:32,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:37:32,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:37:32,125 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 06:37:32,127 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 06:37:32,260 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-17 06:37:32,298 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-17 06:37:32,298 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:37:32,298 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:37:32,302 INFO L256 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 06:37:32,306 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:37:32,344 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:37:32,346 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:37:32,370 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 06:37:32,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46786457] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 06:37:32,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 06:37:32,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2025-03-17 06:37:32,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029615625] [2025-03-17 06:37:32,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 06:37:32,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 06:37:32,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:37:32,372 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 06:37:32,373 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2025-03-17 06:37:32,373 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-17 06:37:32,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 45 transitions, 122 flow. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 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 06:37:32,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:37:32,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-17 06:37:32,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:37:32,854 INFO L124 PetriNetUnfolderBase]: 2373/3246 cut-off events. [2025-03-17 06:37:32,854 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2025-03-17 06:37:32,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6574 conditions, 3246 events. 2373/3246 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 12264 event pairs, 1692 based on Foata normal form. 6/2573 useless extension candidates. Maximal degree in co-relation 6525. Up to 3234 conditions per place. [2025-03-17 06:37:32,869 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 38 selfloop transitions, 15 changer transitions 0/54 dead transitions. [2025-03-17 06:37:32,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 54 transitions, 264 flow [2025-03-17 06:37:32,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 06:37:32,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 06:37:32,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2025-03-17 06:37:32,871 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2925170068027211 [2025-03-17 06:37:32,871 INFO L175 Difference]: Start difference. First operand has 40 places, 45 transitions, 122 flow. Second operand 6 states and 86 transitions. [2025-03-17 06:37:32,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 54 transitions, 264 flow [2025-03-17 06:37:32,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 54 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 06:37:32,872 INFO L231 Difference]: Finished difference. Result has 47 places, 54 transitions, 212 flow [2025-03-17 06:37:32,872 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=212, PETRI_PLACES=47, PETRI_TRANSITIONS=54} [2025-03-17 06:37:32,873 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2025-03-17 06:37:32,873 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 54 transitions, 212 flow [2025-03-17 06:37:32,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 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 06:37:32,873 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:37:32,873 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 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 06:37:32,882 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 06:37:33,079 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 06:37:33,080 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 06:37:33,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:37:33,082 INFO L85 PathProgramCache]: Analyzing trace with hash 2024217071, now seen corresponding path program 2 times [2025-03-17 06:37:33,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:37:33,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994921591] [2025-03-17 06:37:33,082 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:37:33,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:37:33,101 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 36 statements into 2 equivalence classes. [2025-03-17 06:37:33,127 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 24 of 36 statements. [2025-03-17 06:37:33,127 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 06:37:33,127 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:37:33,710 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-17 06:37:33,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:37:33,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994921591] [2025-03-17 06:37:33,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994921591] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:37:33,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:37:33,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 06:37:33,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008358963] [2025-03-17 06:37:33,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:37:33,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:37:33,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:37:33,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:37:33,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 06:37:33,712 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-17 06:37:33,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 54 transitions, 212 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 06:37:33,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:37:33,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-17 06:37:33,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:37:34,674 INFO L124 PetriNetUnfolderBase]: 3867/5443 cut-off events. [2025-03-17 06:37:34,674 INFO L125 PetriNetUnfolderBase]: For 119/119 co-relation queries the response was YES. [2025-03-17 06:37:34,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11022 conditions, 5443 events. 3867/5443 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 25108 event pairs, 1692 based on Foata normal form. 1/4412 useless extension candidates. Maximal degree in co-relation 10934. Up to 3132 conditions per place. [2025-03-17 06:37:34,693 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 107 selfloop transitions, 13 changer transitions 1/122 dead transitions. [2025-03-17 06:37:34,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 122 transitions, 602 flow [2025-03-17 06:37:34,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 06:37:34,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 06:37:34,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2025-03-17 06:37:34,695 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2025-03-17 06:37:34,695 INFO L175 Difference]: Start difference. First operand has 47 places, 54 transitions, 212 flow. Second operand 5 states and 130 transitions. [2025-03-17 06:37:34,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 122 transitions, 602 flow [2025-03-17 06:37:34,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 122 transitions, 578 flow, removed 9 selfloop flow, removed 1 redundant places. [2025-03-17 06:37:34,697 INFO L231 Difference]: Finished difference. Result has 53 places, 66 transitions, 287 flow [2025-03-17 06:37:34,697 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=287, PETRI_PLACES=53, PETRI_TRANSITIONS=66} [2025-03-17 06:37:34,697 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 10 predicate places. [2025-03-17 06:37:34,698 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 66 transitions, 287 flow [2025-03-17 06:37:34,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 06:37:34,698 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:37:34,698 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 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 06:37:34,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 06:37:34,698 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 06:37:34,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:37:34,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1928529151, now seen corresponding path program 3 times [2025-03-17 06:37:34,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:37:34,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067036493] [2025-03-17 06:37:34,699 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 06:37:34,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:37:34,713 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 36 statements into 3 equivalence classes. [2025-03-17 06:37:34,729 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 24 of 36 statements. [2025-03-17 06:37:34,729 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-17 06:37:34,730 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:37:35,089 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-17 06:37:35,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:37:35,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067036493] [2025-03-17 06:37:35,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067036493] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:37:35,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:37:35,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 06:37:35,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820739419] [2025-03-17 06:37:35,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:37:35,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:37:35,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:37:35,090 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:37:35,090 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 06:37:35,091 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-17 06:37:35,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 66 transitions, 287 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 06:37:35,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:37:35,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-17 06:37:35,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:37:36,224 INFO L124 PetriNetUnfolderBase]: 5454/7858 cut-off events. [2025-03-17 06:37:36,225 INFO L125 PetriNetUnfolderBase]: For 3063/3063 co-relation queries the response was YES. [2025-03-17 06:37:36,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18915 conditions, 7858 events. 5454/7858 cut-off events. For 3063/3063 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 39737 event pairs, 2807 based on Foata normal form. 1/7582 useless extension candidates. Maximal degree in co-relation 18835. Up to 5118 conditions per place. [2025-03-17 06:37:36,259 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 117 selfloop transitions, 19 changer transitions 2/139 dead transitions. [2025-03-17 06:37:36,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 139 transitions, 775 flow [2025-03-17 06:37:36,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 06:37:36,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 06:37:36,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2025-03-17 06:37:36,261 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2025-03-17 06:37:36,261 INFO L175 Difference]: Start difference. First operand has 53 places, 66 transitions, 287 flow. Second operand 5 states and 130 transitions. [2025-03-17 06:37:36,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 139 transitions, 775 flow [2025-03-17 06:37:36,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 139 transitions, 775 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 06:37:36,268 INFO L231 Difference]: Finished difference. Result has 60 places, 82 transitions, 459 flow [2025-03-17 06:37:36,268 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=459, PETRI_PLACES=60, PETRI_TRANSITIONS=82} [2025-03-17 06:37:36,268 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 17 predicate places. [2025-03-17 06:37:36,269 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 82 transitions, 459 flow [2025-03-17 06:37:36,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 06:37:36,270 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:37:36,270 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 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 06:37:36,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 06:37:36,270 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 06:37:36,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:37:36,271 INFO L85 PathProgramCache]: Analyzing trace with hash 839369669, now seen corresponding path program 4 times [2025-03-17 06:37:36,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:37:36,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742864764] [2025-03-17 06:37:36,271 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 06:37:36,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:37:36,290 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 36 statements into 2 equivalence classes. [2025-03-17 06:37:36,311 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-03-17 06:37:36,311 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 06:37:36,311 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:37:36,456 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-03-17 06:37:36,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:37:36,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742864764] [2025-03-17 06:37:36,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742864764] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:37:36,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580554393] [2025-03-17 06:37:36,458 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 06:37:36,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:37:36,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:37:36,460 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 06:37:36,461 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 06:37:36,582 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 36 statements into 2 equivalence classes. [2025-03-17 06:37:36,621 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-03-17 06:37:36,622 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 06:37:36,622 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:37:36,625 INFO L256 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 06:37:36,627 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:37:36,680 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-03-17 06:37:36,682 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 06:37:36,723 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-03-17 06:37:36,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580554393] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 06:37:36,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 06:37:36,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2025-03-17 06:37:36,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123057968] [2025-03-17 06:37:36,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 06:37:36,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-17 06:37:36,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:37:36,724 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-17 06:37:36,724 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2025-03-17 06:37:36,725 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-17 06:37:36,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 82 transitions, 459 flow. Second operand has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 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 06:37:36,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:37:36,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-17 06:37:36,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:37:37,520 INFO L124 PetriNetUnfolderBase]: 5422/7806 cut-off events. [2025-03-17 06:37:37,520 INFO L125 PetriNetUnfolderBase]: For 9233/9233 co-relation queries the response was YES. [2025-03-17 06:37:37,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21900 conditions, 7806 events. 5422/7806 cut-off events. For 9233/9233 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 39177 event pairs, 4112 based on Foata normal form. 1/7790 useless extension candidates. Maximal degree in co-relation 21804. Up to 7784 conditions per place. [2025-03-17 06:37:37,556 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 66 selfloop transitions, 18 changer transitions 0/85 dead transitions. [2025-03-17 06:37:37,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 85 transitions, 645 flow [2025-03-17 06:37:37,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 06:37:37,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 06:37:37,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2025-03-17 06:37:37,558 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2536443148688047 [2025-03-17 06:37:37,558 INFO L175 Difference]: Start difference. First operand has 60 places, 82 transitions, 459 flow. Second operand 7 states and 87 transitions. [2025-03-17 06:37:37,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 85 transitions, 645 flow [2025-03-17 06:37:37,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 85 transitions, 637 flow, removed 4 selfloop flow, removed 0 redundant places. [2025-03-17 06:37:37,574 INFO L231 Difference]: Finished difference. Result has 67 places, 85 transitions, 519 flow [2025-03-17 06:37:37,575 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=519, PETRI_PLACES=67, PETRI_TRANSITIONS=85} [2025-03-17 06:37:37,575 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 24 predicate places. [2025-03-17 06:37:37,575 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 85 transitions, 519 flow [2025-03-17 06:37:37,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 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 06:37:37,576 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:37:37,576 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 06:37:37,584 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 06:37:37,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:37:37,777 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 06:37:37,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:37:37,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1551947957, now seen corresponding path program 5 times [2025-03-17 06:37:37,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:37:37,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574660524] [2025-03-17 06:37:37,777 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 06:37:37,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:37:37,792 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 39 statements into 4 equivalence classes. [2025-03-17 06:37:37,825 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 39 of 39 statements. [2025-03-17 06:37:37,825 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-03-17 06:37:37,825 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:37:38,255 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-17 06:37:38,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:37:38,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574660524] [2025-03-17 06:37:38,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574660524] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:37:38,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:37:38,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 06:37:38,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826940663] [2025-03-17 06:37:38,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:37:38,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:37:38,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:37:38,256 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:37:38,256 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 06:37:38,256 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-17 06:37:38,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 85 transitions, 519 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 06:37:38,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:37:38,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-17 06:37:38,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:37:39,657 INFO L124 PetriNetUnfolderBase]: 8262/11887 cut-off events. [2025-03-17 06:37:39,657 INFO L125 PetriNetUnfolderBase]: For 13241/13241 co-relation queries the response was YES. [2025-03-17 06:37:39,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32984 conditions, 11887 events. 8262/11887 cut-off events. For 13241/13241 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 64419 event pairs, 2976 based on Foata normal form. 1/11873 useless extension candidates. Maximal degree in co-relation 32867. Up to 5315 conditions per place. [2025-03-17 06:37:39,716 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 126 selfloop transitions, 37 changer transitions 1/165 dead transitions. [2025-03-17 06:37:39,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 165 transitions, 1169 flow [2025-03-17 06:37:39,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 06:37:39,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 06:37:39,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2025-03-17 06:37:39,718 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5469387755102041 [2025-03-17 06:37:39,718 INFO L175 Difference]: Start difference. First operand has 67 places, 85 transitions, 519 flow. Second operand 5 states and 134 transitions. [2025-03-17 06:37:39,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 165 transitions, 1169 flow [2025-03-17 06:37:39,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 165 transitions, 1133 flow, removed 6 selfloop flow, removed 4 redundant places. [2025-03-17 06:37:39,737 INFO L231 Difference]: Finished difference. Result has 71 places, 106 transitions, 808 flow [2025-03-17 06:37:39,737 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=808, PETRI_PLACES=71, PETRI_TRANSITIONS=106} [2025-03-17 06:37:39,738 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 28 predicate places. [2025-03-17 06:37:39,739 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 106 transitions, 808 flow [2025-03-17 06:37:39,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 06:37:39,739 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:37:39,739 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 06:37:39,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 06:37:39,739 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 06:37:39,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:37:39,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1441336667, now seen corresponding path program 6 times [2025-03-17 06:37:39,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:37:39,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061955114] [2025-03-17 06:37:39,740 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 06:37:39,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:37:39,763 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 39 statements into 4 equivalence classes. [2025-03-17 06:37:39,775 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 24 of 39 statements. [2025-03-17 06:37:39,778 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-17 06:37:39,779 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:37:40,097 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-17 06:37:40,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:37:40,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061955114] [2025-03-17 06:37:40,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061955114] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:37:40,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:37:40,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 06:37:40,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489684964] [2025-03-17 06:37:40,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:37:40,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:37:40,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:37:40,099 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:37:40,099 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 06:37:40,099 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-17 06:37:40,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 106 transitions, 808 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 06:37:40,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:37:40,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-17 06:37:40,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:37:41,909 INFO L124 PetriNetUnfolderBase]: 11796/16869 cut-off events. [2025-03-17 06:37:41,910 INFO L125 PetriNetUnfolderBase]: For 36077/36077 co-relation queries the response was YES. [2025-03-17 06:37:41,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51816 conditions, 16869 events. 11796/16869 cut-off events. For 36077/36077 co-relation queries the response was YES. Maximal size of possible extension queue 618. Compared 94872 event pairs, 3509 based on Foata normal form. 1/16855 useless extension candidates. Maximal degree in co-relation 51713. Up to 8500 conditions per place. [2025-03-17 06:37:41,981 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 156 selfloop transitions, 35 changer transitions 2/194 dead transitions. [2025-03-17 06:37:41,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 194 transitions, 1690 flow [2025-03-17 06:37:41,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 06:37:41,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 06:37:41,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2025-03-17 06:37:41,982 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5387755102040817 [2025-03-17 06:37:41,982 INFO L175 Difference]: Start difference. First operand has 71 places, 106 transitions, 808 flow. Second operand 5 states and 132 transitions. [2025-03-17 06:37:41,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 194 transitions, 1690 flow [2025-03-17 06:37:42,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 194 transitions, 1674 flow, removed 8 selfloop flow, removed 0 redundant places. [2025-03-17 06:37:42,027 INFO L231 Difference]: Finished difference. Result has 79 places, 131 transitions, 1185 flow [2025-03-17 06:37:42,027 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1185, PETRI_PLACES=79, PETRI_TRANSITIONS=131} [2025-03-17 06:37:42,027 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 36 predicate places. [2025-03-17 06:37:42,027 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 131 transitions, 1185 flow [2025-03-17 06:37:42,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 06:37:42,028 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:37:42,028 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 06:37:42,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 06:37:42,029 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 06:37:42,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:37:42,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1902576135, now seen corresponding path program 7 times [2025-03-17 06:37:42,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:37:42,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046569657] [2025-03-17 06:37:42,032 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 06:37:42,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:37:42,046 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-17 06:37:42,063 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-17 06:37:42,064 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:37:42,064 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:37:42,460 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-17 06:37:42,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:37:42,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046569657] [2025-03-17 06:37:42,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046569657] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:37:42,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:37:42,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 06:37:42,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878565391] [2025-03-17 06:37:42,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:37:42,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:37:42,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:37:42,462 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:37:42,462 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 06:37:42,462 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-17 06:37:42,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 131 transitions, 1185 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 06:37:42,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:37:42,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-17 06:37:42,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:37:45,651 INFO L124 PetriNetUnfolderBase]: 17492/24835 cut-off events. [2025-03-17 06:37:45,651 INFO L125 PetriNetUnfolderBase]: For 71237/71237 co-relation queries the response was YES. [2025-03-17 06:37:45,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81639 conditions, 24835 events. 17492/24835 cut-off events. For 71237/71237 co-relation queries the response was YES. Maximal size of possible extension queue 903. Compared 147473 event pairs, 4521 based on Foata normal form. 1/24821 useless extension candidates. Maximal degree in co-relation 81532. Up to 10760 conditions per place. [2025-03-17 06:37:45,932 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 199 selfloop transitions, 68 changer transitions 3/271 dead transitions. [2025-03-17 06:37:45,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 271 transitions, 2553 flow [2025-03-17 06:37:45,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 06:37:45,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 06:37:45,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 187 transitions. [2025-03-17 06:37:45,934 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5451895043731778 [2025-03-17 06:37:45,934 INFO L175 Difference]: Start difference. First operand has 79 places, 131 transitions, 1185 flow. Second operand 7 states and 187 transitions. [2025-03-17 06:37:45,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 271 transitions, 2553 flow [2025-03-17 06:37:46,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 271 transitions, 2537 flow, removed 8 selfloop flow, removed 0 redundant places. [2025-03-17 06:37:46,044 INFO L231 Difference]: Finished difference. Result has 91 places, 168 transitions, 1885 flow [2025-03-17 06:37:46,045 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1177, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1885, PETRI_PLACES=91, PETRI_TRANSITIONS=168} [2025-03-17 06:37:46,045 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 48 predicate places. [2025-03-17 06:37:46,045 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 168 transitions, 1885 flow [2025-03-17 06:37:46,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 06:37:46,045 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:37:46,045 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 06:37:46,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 06:37:46,046 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 06:37:46,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:37:46,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1929906955, now seen corresponding path program 8 times [2025-03-17 06:37:46,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:37:46,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810106260] [2025-03-17 06:37:46,047 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:37:46,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:37:46,062 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 39 statements into 2 equivalence classes. [2025-03-17 06:37:46,070 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 24 of 39 statements. [2025-03-17 06:37:46,070 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 06:37:46,070 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:37:46,340 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-17 06:37:46,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:37:46,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810106260] [2025-03-17 06:37:46,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810106260] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:37:46,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:37:46,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 06:37:46,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445628896] [2025-03-17 06:37:46,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:37:46,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:37:46,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:37:46,341 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:37:46,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 06:37:46,342 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-17 06:37:46,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 168 transitions, 1885 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 06:37:46,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:37:46,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-17 06:37:46,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:37:49,446 INFO L124 PetriNetUnfolderBase]: 17895/25424 cut-off events. [2025-03-17 06:37:49,446 INFO L125 PetriNetUnfolderBase]: For 119277/119277 co-relation queries the response was YES. [2025-03-17 06:37:49,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94157 conditions, 25424 events. 17895/25424 cut-off events. For 119277/119277 co-relation queries the response was YES. Maximal size of possible extension queue 951. Compared 151345 event pairs, 3761 based on Foata normal form. 1/25425 useless extension candidates. Maximal degree in co-relation 94044. Up to 8442 conditions per place. [2025-03-17 06:37:49,583 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 189 selfloop transitions, 100 changer transitions 2/292 dead transitions. [2025-03-17 06:37:49,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 292 transitions, 3225 flow [2025-03-17 06:37:49,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 06:37:49,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 06:37:49,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 180 transitions. [2025-03-17 06:37:49,585 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6122448979591837 [2025-03-17 06:37:49,585 INFO L175 Difference]: Start difference. First operand has 91 places, 168 transitions, 1885 flow. Second operand 6 states and 180 transitions. [2025-03-17 06:37:49,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 292 transitions, 3225 flow [2025-03-17 06:37:49,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 292 transitions, 3169 flow, removed 28 selfloop flow, removed 0 redundant places. [2025-03-17 06:37:49,837 INFO L231 Difference]: Finished difference. Result has 100 places, 188 transitions, 2481 flow [2025-03-17 06:37:49,838 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1845, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2481, PETRI_PLACES=100, PETRI_TRANSITIONS=188} [2025-03-17 06:37:49,838 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 57 predicate places. [2025-03-17 06:37:49,838 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 188 transitions, 2481 flow [2025-03-17 06:37:49,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 06:37:49,839 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:37:49,839 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 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 06:37:49,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 06:37:49,839 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 06:37:49,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:37:49,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1378936483, now seen corresponding path program 1 times [2025-03-17 06:37:49,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:37:49,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357912843] [2025-03-17 06:37:49,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:37:49,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:37:49,854 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-03-17 06:37:49,863 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-03-17 06:37:49,863 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:37:49,863 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:37:49,999 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-17 06:37:49,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:37:49,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357912843] [2025-03-17 06:37:49,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357912843] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:37:49,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:37:49,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 06:37:49,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848989619] [2025-03-17 06:37:49,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:37:50,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:37:50,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:37:50,000 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:37:50,000 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 06:37:50,000 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-17 06:37:50,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 188 transitions, 2481 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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 06:37:50,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:37:50,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-17 06:37:50,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:37:54,247 INFO L124 PetriNetUnfolderBase]: 18536/26441 cut-off events. [2025-03-17 06:37:54,247 INFO L125 PetriNetUnfolderBase]: For 157163/157163 co-relation queries the response was YES. [2025-03-17 06:37:54,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102254 conditions, 26441 events. 18536/26441 cut-off events. For 157163/157163 co-relation queries the response was YES. Maximal size of possible extension queue 1004. Compared 159332 event pairs, 8533 based on Foata normal form. 60/26501 useless extension candidates. Maximal degree in co-relation 102137. Up to 12847 conditions per place. [2025-03-17 06:37:54,603 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 219 selfloop transitions, 10 changer transitions 33/263 dead transitions. [2025-03-17 06:37:54,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 263 transitions, 3509 flow [2025-03-17 06:37:54,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 06:37:54,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 06:37:54,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2025-03-17 06:37:54,604 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5183673469387755 [2025-03-17 06:37:54,604 INFO L175 Difference]: Start difference. First operand has 100 places, 188 transitions, 2481 flow. Second operand 5 states and 127 transitions. [2025-03-17 06:37:54,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 263 transitions, 3509 flow [2025-03-17 06:37:55,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 263 transitions, 3425 flow, removed 37 selfloop flow, removed 1 redundant places. [2025-03-17 06:37:55,456 INFO L231 Difference]: Finished difference. Result has 106 places, 177 transitions, 2285 flow [2025-03-17 06:37:55,457 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2359, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2285, PETRI_PLACES=106, PETRI_TRANSITIONS=177} [2025-03-17 06:37:55,458 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 63 predicate places. [2025-03-17 06:37:55,458 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 177 transitions, 2285 flow [2025-03-17 06:37:55,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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 06:37:55,459 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:37:55,459 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 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 06:37:55,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-17 06:37:55,459 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 06:37:55,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:37:55,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1177980852, now seen corresponding path program 1 times [2025-03-17 06:37:55,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:37:55,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611024882] [2025-03-17 06:37:55,461 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:37:55,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:37:55,476 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-03-17 06:37:55,486 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-03-17 06:37:55,486 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:37:55,486 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:37:55,716 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-17 06:37:55,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:37:55,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611024882] [2025-03-17 06:37:55,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611024882] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:37:55,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:37:55,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 06:37:55,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653970042] [2025-03-17 06:37:55,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:37:55,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:37:55,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:37:55,718 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:37:55,718 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 06:37:55,718 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-17 06:37:55,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 177 transitions, 2285 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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 06:37:55,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:37:55,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-17 06:37:55,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:37:58,779 INFO L124 PetriNetUnfolderBase]: 18030/25797 cut-off events. [2025-03-17 06:37:58,779 INFO L125 PetriNetUnfolderBase]: For 147342/147342 co-relation queries the response was YES. [2025-03-17 06:37:58,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98261 conditions, 25797 events. 18030/25797 cut-off events. For 147342/147342 co-relation queries the response was YES. Maximal size of possible extension queue 999. Compared 155999 event pairs, 9143 based on Foata normal form. 42/25839 useless extension candidates. Maximal degree in co-relation 98141. Up to 16776 conditions per place. [2025-03-17 06:37:59,036 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 198 selfloop transitions, 16 changer transitions 19/234 dead transitions. [2025-03-17 06:37:59,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 234 transitions, 3008 flow [2025-03-17 06:37:59,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 06:37:59,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 06:37:59,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2025-03-17 06:37:59,037 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2025-03-17 06:37:59,037 INFO L175 Difference]: Start difference. First operand has 106 places, 177 transitions, 2285 flow. Second operand 5 states and 120 transitions. [2025-03-17 06:37:59,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 234 transitions, 3008 flow [2025-03-17 06:37:59,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 234 transitions, 2987 flow, removed 7 selfloop flow, removed 3 redundant places. [2025-03-17 06:37:59,379 INFO L231 Difference]: Finished difference. Result has 106 places, 170 transitions, 2190 flow [2025-03-17 06:37:59,380 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2230, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2190, PETRI_PLACES=106, PETRI_TRANSITIONS=170} [2025-03-17 06:37:59,380 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 63 predicate places. [2025-03-17 06:37:59,380 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 170 transitions, 2190 flow [2025-03-17 06:37:59,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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 06:37:59,380 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:37:59,380 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 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 06:37:59,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-17 06:37:59,380 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 06:37:59,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:37:59,381 INFO L85 PathProgramCache]: Analyzing trace with hash -214488252, now seen corresponding path program 1 times [2025-03-17 06:37:59,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:37:59,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796861691] [2025-03-17 06:37:59,381 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:37:59,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:37:59,393 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-03-17 06:37:59,400 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-03-17 06:37:59,401 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:37:59,401 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:37:59,530 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-17 06:37:59,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:37:59,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796861691] [2025-03-17 06:37:59,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796861691] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:37:59,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:37:59,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 06:37:59,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290858548] [2025-03-17 06:37:59,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:37:59,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:37:59,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:37:59,531 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:37:59,532 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 06:37:59,532 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-17 06:37:59,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 170 transitions, 2190 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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 06:37:59,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:37:59,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-17 06:37:59,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:38:03,417 INFO L124 PetriNetUnfolderBase]: 21586/30988 cut-off events. [2025-03-17 06:38:03,418 INFO L125 PetriNetUnfolderBase]: For 161681/161681 co-relation queries the response was YES. [2025-03-17 06:38:03,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115040 conditions, 30988 events. 21586/30988 cut-off events. For 161681/161681 co-relation queries the response was YES. Maximal size of possible extension queue 1186. Compared 193465 event pairs, 6326 based on Foata normal form. 6/30994 useless extension candidates. Maximal degree in co-relation 114921. Up to 9439 conditions per place. [2025-03-17 06:38:03,736 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 193 selfloop transitions, 51 changer transitions 53/298 dead transitions. [2025-03-17 06:38:03,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 298 transitions, 3711 flow [2025-03-17 06:38:03,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 06:38:03,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 06:38:03,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 171 transitions. [2025-03-17 06:38:03,738 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5816326530612245 [2025-03-17 06:38:03,738 INFO L175 Difference]: Start difference. First operand has 106 places, 170 transitions, 2190 flow. Second operand 6 states and 171 transitions. [2025-03-17 06:38:03,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 298 transitions, 3711 flow [2025-03-17 06:38:04,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 298 transitions, 3683 flow, removed 5 selfloop flow, removed 2 redundant places. [2025-03-17 06:38:04,201 INFO L231 Difference]: Finished difference. Result has 112 places, 169 transitions, 2210 flow [2025-03-17 06:38:04,201 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2176, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2210, PETRI_PLACES=112, PETRI_TRANSITIONS=169} [2025-03-17 06:38:04,201 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 69 predicate places. [2025-03-17 06:38:04,201 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 169 transitions, 2210 flow [2025-03-17 06:38:04,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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 06:38:04,201 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:38:04,201 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 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 06:38:04,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-17 06:38:04,202 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 06:38:04,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:38:04,202 INFO L85 PathProgramCache]: Analyzing trace with hash 889163346, now seen corresponding path program 2 times [2025-03-17 06:38:04,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:38:04,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666631114] [2025-03-17 06:38:04,202 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:38:04,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:38:04,221 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-03-17 06:38:04,225 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 27 of 42 statements. [2025-03-17 06:38:04,226 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 06:38:04,226 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:38:04,334 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-17 06:38:04,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:38:04,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666631114] [2025-03-17 06:38:04,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666631114] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:38:04,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:38:04,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 06:38:04,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346561409] [2025-03-17 06:38:04,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:38:04,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:38:04,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:38:04,336 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:38:04,336 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 06:38:04,336 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-17 06:38:04,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 169 transitions, 2210 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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 06:38:04,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:38:04,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-17 06:38:04,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:38:09,015 INFO L124 PetriNetUnfolderBase]: 20631/29643 cut-off events. [2025-03-17 06:38:09,015 INFO L125 PetriNetUnfolderBase]: For 169398/169398 co-relation queries the response was YES. [2025-03-17 06:38:09,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113357 conditions, 29643 events. 20631/29643 cut-off events. For 169398/169398 co-relation queries the response was YES. Maximal size of possible extension queue 1136. Compared 181808 event pairs, 9665 based on Foata normal form. 4/29647 useless extension candidates. Maximal degree in co-relation 113236. Up to 16402 conditions per place. [2025-03-17 06:38:09,400 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 189 selfloop transitions, 44 changer transitions 54/288 dead transitions. [2025-03-17 06:38:09,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 288 transitions, 3524 flow [2025-03-17 06:38:09,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 06:38:09,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 06:38:09,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2025-03-17 06:38:09,402 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5160349854227405 [2025-03-17 06:38:09,402 INFO L175 Difference]: Start difference. First operand has 112 places, 169 transitions, 2210 flow. Second operand 7 states and 177 transitions. [2025-03-17 06:38:09,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 288 transitions, 3524 flow [2025-03-17 06:38:09,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 288 transitions, 3455 flow, removed 33 selfloop flow, removed 3 redundant places. [2025-03-17 06:38:09,965 INFO L231 Difference]: Finished difference. Result has 117 places, 169 transitions, 2352 flow [2025-03-17 06:38:09,965 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2171, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2352, PETRI_PLACES=117, PETRI_TRANSITIONS=169} [2025-03-17 06:38:09,966 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 74 predicate places. [2025-03-17 06:38:09,966 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 169 transitions, 2352 flow [2025-03-17 06:38:09,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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 06:38:09,966 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:38:09,966 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 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 06:38:09,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-17 06:38:09,966 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 06:38:09,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:38:09,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1423384086, now seen corresponding path program 3 times [2025-03-17 06:38:09,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:38:09,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255058575] [2025-03-17 06:38:09,967 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 06:38:09,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:38:09,982 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 42 statements into 4 equivalence classes. [2025-03-17 06:38:09,988 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 27 of 42 statements. [2025-03-17 06:38:09,988 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-17 06:38:09,988 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:38:10,163 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-17 06:38:10,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:38:10,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255058575] [2025-03-17 06:38:10,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255058575] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:38:10,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:38:10,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 06:38:10,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455776831] [2025-03-17 06:38:10,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:38:10,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:38:10,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:38:10,167 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:38:10,167 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 06:38:10,167 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-17 06:38:10,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 169 transitions, 2352 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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 06:38:10,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:38:10,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-17 06:38:10,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:38:14,006 INFO L124 PetriNetUnfolderBase]: 18951/27137 cut-off events. [2025-03-17 06:38:14,007 INFO L125 PetriNetUnfolderBase]: For 181433/181433 co-relation queries the response was YES. [2025-03-17 06:38:14,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107754 conditions, 27137 events. 18951/27137 cut-off events. For 181433/181433 co-relation queries the response was YES. Maximal size of possible extension queue 1019. Compared 164336 event pairs, 7395 based on Foata normal form. 1/27138 useless extension candidates. Maximal degree in co-relation 107631. Up to 18008 conditions per place. [2025-03-17 06:38:14,283 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 199 selfloop transitions, 17 changer transitions 20/237 dead transitions. [2025-03-17 06:38:14,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 237 transitions, 3305 flow [2025-03-17 06:38:14,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 06:38:14,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 06:38:14,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2025-03-17 06:38:14,284 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4775510204081633 [2025-03-17 06:38:14,284 INFO L175 Difference]: Start difference. First operand has 117 places, 169 transitions, 2352 flow. Second operand 5 states and 117 transitions. [2025-03-17 06:38:14,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 237 transitions, 3305 flow [2025-03-17 06:38:14,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 237 transitions, 3212 flow, removed 30 selfloop flow, removed 3 redundant places. [2025-03-17 06:38:14,972 INFO L231 Difference]: Finished difference. Result has 117 places, 165 transitions, 2251 flow [2025-03-17 06:38:14,973 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2276, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2251, PETRI_PLACES=117, PETRI_TRANSITIONS=165} [2025-03-17 06:38:14,973 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 74 predicate places. [2025-03-17 06:38:14,973 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 165 transitions, 2251 flow [2025-03-17 06:38:14,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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 06:38:14,973 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:38:14,973 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 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 06:38:14,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-17 06:38:14,974 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 06:38:14,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:38:14,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1077884157, now seen corresponding path program 2 times [2025-03-17 06:38:14,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:38:14,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929508337] [2025-03-17 06:38:14,974 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:38:14,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:38:14,990 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-03-17 06:38:14,994 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 27 of 42 statements. [2025-03-17 06:38:14,995 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 06:38:14,995 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:38:15,060 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-17 06:38:15,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:38:15,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929508337] [2025-03-17 06:38:15,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929508337] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:38:15,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:38:15,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 06:38:15,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322940713] [2025-03-17 06:38:15,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:38:15,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 06:38:15,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:38:15,062 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 06:38:15,062 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 06:38:15,062 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-17 06:38:15,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 165 transitions, 2251 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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 06:38:15,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:38:15,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-17 06:38:15,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:38:18,706 INFO L124 PetriNetUnfolderBase]: 18779/26870 cut-off events. [2025-03-17 06:38:18,706 INFO L125 PetriNetUnfolderBase]: For 177490/177490 co-relation queries the response was YES. [2025-03-17 06:38:18,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105001 conditions, 26870 events. 18779/26870 cut-off events. For 177490/177490 co-relation queries the response was YES. Maximal size of possible extension queue 1004. Compared 162318 event pairs, 11836 based on Foata normal form. 6/26876 useless extension candidates. Maximal degree in co-relation 104879. Up to 22406 conditions per place. [2025-03-17 06:38:18,973 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 148 selfloop transitions, 5 changer transitions 55/209 dead transitions. [2025-03-17 06:38:18,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 209 transitions, 2935 flow [2025-03-17 06:38:18,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 06:38:18,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 06:38:18,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2025-03-17 06:38:18,975 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-03-17 06:38:18,975 INFO L175 Difference]: Start difference. First operand has 117 places, 165 transitions, 2251 flow. Second operand 4 states and 98 transitions. [2025-03-17 06:38:18,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 209 transitions, 2935 flow [2025-03-17 06:38:19,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 209 transitions, 2874 flow, removed 8 selfloop flow, removed 4 redundant places. [2025-03-17 06:38:19,639 INFO L231 Difference]: Finished difference. Result has 115 places, 137 transitions, 1652 flow [2025-03-17 06:38:19,639 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2194, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1652, PETRI_PLACES=115, PETRI_TRANSITIONS=137} [2025-03-17 06:38:19,640 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 72 predicate places. [2025-03-17 06:38:19,640 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 137 transitions, 1652 flow [2025-03-17 06:38:19,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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 06:38:19,640 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:38:19,640 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 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 06:38:19,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-17 06:38:19,640 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 06:38:19,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:38:19,641 INFO L85 PathProgramCache]: Analyzing trace with hash 720953038, now seen corresponding path program 4 times [2025-03-17 06:38:19,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:38:19,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583811876] [2025-03-17 06:38:19,641 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 06:38:19,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:38:19,656 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 42 statements into 2 equivalence classes. [2025-03-17 06:38:19,665 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-03-17 06:38:19,665 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 06:38:19,665 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:38:19,844 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-17 06:38:19,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:38:19,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583811876] [2025-03-17 06:38:19,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583811876] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:38:19,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:38:19,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 06:38:19,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942032732] [2025-03-17 06:38:19,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:38:19,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:38:19,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:38:19,845 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:38:19,846 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 06:38:19,846 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-17 06:38:19,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 137 transitions, 1652 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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 06:38:19,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:38:19,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-17 06:38:19,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand