./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-word-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed 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-word-subst.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1c6ecf58df9dd6f4f380af0d7ef563f293bde5430d47e04b9ba5ac44168fc198 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 17:30:40,053 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 17:30:40,108 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 17:30:40,114 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 17:30:40,114 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 17:30:40,135 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 17:30:40,137 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 17:30:40,137 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 17:30:40,137 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 17:30:40,137 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 17:30:40,138 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 17:30:40,138 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 17:30:40,138 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 17:30:40,138 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 17:30:40,139 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 17:30:40,139 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 17:30:40,139 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 17:30:40,139 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 17:30:40,139 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 17:30:40,139 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 17:30:40,139 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 17:30:40,139 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 17:30:40,139 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 17:30:40,140 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 17:30:40,140 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 17:30:40,140 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 17:30:40,140 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 17:30:40,140 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 17:30:40,140 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 17:30:40,140 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 17:30:40,140 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 17:30:40,141 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 17:30:40,141 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 17:30:40,141 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 17:30:40,141 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 17:30:40,141 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 17:30:40,141 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 17:30:40,141 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 17:30:40,141 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 17:30:40,141 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 17:30:40,141 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 17:30:40,141 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 17:30:40,141 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 17:30:40,142 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 -> 1c6ecf58df9dd6f4f380af0d7ef563f293bde5430d47e04b9ba5ac44168fc198 [2025-03-08 17:30:40,352 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 17:30:40,357 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 17:30:40,358 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 17:30:40,359 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 17:30:40,359 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 17:30:40,360 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2025-03-08 17:30:41,490 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89381bce0/c3c476526ac940b4acaf791b62c6886f/FLAGc96a7b39c [2025-03-08 17:30:41,713 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 17:30:41,713 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2025-03-08 17:30:41,734 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89381bce0/c3c476526ac940b4acaf791b62c6886f/FLAGc96a7b39c [2025-03-08 17:30:42,066 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89381bce0/c3c476526ac940b4acaf791b62c6886f [2025-03-08 17:30:42,068 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 17:30:42,069 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 17:30:42,070 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 17:30:42,070 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 17:30:42,073 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 17:30:42,074 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:30:42" (1/1) ... [2025-03-08 17:30:42,074 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51657594 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:30:42, skipping insertion in model container [2025-03-08 17:30:42,074 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:30:42" (1/1) ... [2025-03-08 17:30:42,089 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 17:30:42,227 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-word-subst.wvr.c[3384,3397] [2025-03-08 17:30:42,237 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 17:30:42,245 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 17:30:42,270 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-word-subst.wvr.c[3384,3397] [2025-03-08 17:30:42,276 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 17:30:42,293 INFO L204 MainTranslator]: Completed translation [2025-03-08 17:30:42,294 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:30:42 WrapperNode [2025-03-08 17:30:42,294 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 17:30:42,295 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 17:30:42,295 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 17:30:42,295 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 17:30:42,300 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:30:42" (1/1) ... [2025-03-08 17:30:42,309 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:30:42" (1/1) ... [2025-03-08 17:30:42,328 INFO L138 Inliner]: procedures = 24, calls = 30, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 160 [2025-03-08 17:30:42,331 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 17:30:42,332 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 17:30:42,332 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 17:30:42,332 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 17:30:42,339 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:30:42" (1/1) ... [2025-03-08 17:30:42,339 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:30:42" (1/1) ... [2025-03-08 17:30:42,347 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:30:42" (1/1) ... [2025-03-08 17:30:42,369 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 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]. [2025-03-08 17:30:42,369 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:30:42" (1/1) ... [2025-03-08 17:30:42,369 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:30:42" (1/1) ... [2025-03-08 17:30:42,377 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:30:42" (1/1) ... [2025-03-08 17:30:42,378 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:30:42" (1/1) ... [2025-03-08 17:30:42,379 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:30:42" (1/1) ... [2025-03-08 17:30:42,380 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:30:42" (1/1) ... [2025-03-08 17:30:42,382 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 17:30:42,383 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 17:30:42,383 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 17:30:42,384 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 17:30:42,385 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:30:42" (1/1) ... [2025-03-08 17:30:42,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 17:30:42,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:30:42,414 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) [2025-03-08 17:30:42,418 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 [2025-03-08 17:30:42,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 17:30:42,434 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-08 17:30:42,434 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-08 17:30:42,434 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-08 17:30:42,434 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-08 17:30:42,434 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-08 17:30:42,434 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-08 17:30:42,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 17:30:42,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 17:30:42,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-08 17:30:42,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-08 17:30:42,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-08 17:30:42,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 17:30:42,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 17:30:42,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-08 17:30:42,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-08 17:30:42,436 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-08 17:30:42,521 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 17:30:42,523 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 17:30:42,892 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-08 17:30:42,893 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 17:30:43,143 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 17:30:43,143 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 17:30:43,143 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:30:43 BoogieIcfgContainer [2025-03-08 17:30:43,144 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 17:30:43,145 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 17:30:43,145 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 17:30:43,148 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 17:30:43,149 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 05:30:42" (1/3) ... [2025-03-08 17:30:43,149 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eff494f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:30:43, skipping insertion in model container [2025-03-08 17:30:43,149 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:30:42" (2/3) ... [2025-03-08 17:30:43,150 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eff494f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:30:43, skipping insertion in model container [2025-03-08 17:30:43,150 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:30:43" (3/3) ... [2025-03-08 17:30:43,150 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-word-subst.wvr.c [2025-03-08 17:30:43,162 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 17:30:43,163 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-word-subst.wvr.c that has 4 procedures, 38 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2025-03-08 17:30:43,164 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-08 17:30:43,212 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-08 17:30:43,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 49 transitions, 119 flow [2025-03-08 17:30:43,272 INFO L124 PetriNetUnfolderBase]: 12/46 cut-off events. [2025-03-08 17:30:43,274 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-08 17:30:43,277 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 6. Compared 73 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. [2025-03-08 17:30:43,280 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 49 transitions, 119 flow [2025-03-08 17:30:43,282 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 45 transitions, 108 flow [2025-03-08 17:30:43,288 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 17:30:43,296 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;@6a95b488, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 17:30:43,296 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-03-08 17:30:43,313 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-08 17:30:43,314 INFO L124 PetriNetUnfolderBase]: 12/44 cut-off events. [2025-03-08 17:30:43,314 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-08 17:30:43,314 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:30:43,315 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] [2025-03-08 17:30:43,315 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)] === [2025-03-08 17:30:43,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:30:43,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1763017408, now seen corresponding path program 1 times [2025-03-08 17:30:43,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:30:43,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199447441] [2025-03-08 17:30:43,327 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:30:43,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:30:43,381 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-08 17:30:43,418 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-08 17:30:43,418 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:30:43,418 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:30:43,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:30:43,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:30:43,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199447441] [2025-03-08 17:30:43,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199447441] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:30:43,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:30:43,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 17:30:43,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670316213] [2025-03-08 17:30:43,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:30:43,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 17:30:43,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:30:43,751 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 17:30:43,751 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 17:30:43,775 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-08 17:30:43,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:30:43,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:30:43,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-08 17:30:43,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:30:44,215 INFO L124 PetriNetUnfolderBase]: 3108/4257 cut-off events. [2025-03-08 17:30:44,216 INFO L125 PetriNetUnfolderBase]: For 243/243 co-relation queries the response was YES. [2025-03-08 17:30:44,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8664 conditions, 4257 events. 3108/4257 cut-off events. For 243/243 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 18243 event pairs, 1260 based on Foata normal form. 1/3476 useless extension candidates. Maximal degree in co-relation 7777. Up to 2653 conditions per place. [2025-03-08 17:30:44,237 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 60 selfloop transitions, 2 changer transitions 5/71 dead transitions. [2025-03-08 17:30:44,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 71 transitions, 309 flow [2025-03-08 17:30:44,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 17:30:44,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-08 17:30:44,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2025-03-08 17:30:44,248 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6054421768707483 [2025-03-08 17:30:44,250 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 108 flow. Second operand 3 states and 89 transitions. [2025-03-08 17:30:44,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 71 transitions, 309 flow [2025-03-08 17:30:44,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 71 transitions, 287 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-03-08 17:30:44,264 INFO L231 Difference]: Finished difference. Result has 40 places, 45 transitions, 106 flow [2025-03-08 17:30:44,265 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=40, PETRI_TRANSITIONS=45} [2025-03-08 17:30:44,268 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2025-03-08 17:30:44,269 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 45 transitions, 106 flow [2025-03-08 17:30:44,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:30:44,270 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:30:44,270 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:30:44,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 17:30:44,271 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)] === [2025-03-08 17:30:44,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:30:44,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1141953685, now seen corresponding path program 1 times [2025-03-08 17:30:44,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:30:44,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978591136] [2025-03-08 17:30:44,272 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:30:44,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:30:44,285 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-08 17:30:44,348 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-08 17:30:44,353 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:30:44,353 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:30:45,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:30:45,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:30:45,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978591136] [2025-03-08 17:30:45,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978591136] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:30:45,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:30:45,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 17:30:45,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797591957] [2025-03-08 17:30:45,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:30:45,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 17:30:45,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:30:45,249 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 17:30:45,249 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-08 17:30:45,274 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-08 17:30:45,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 45 transitions, 106 flow. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 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) [2025-03-08 17:30:45,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:30:45,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-08 17:30:45,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:30:46,044 INFO L124 PetriNetUnfolderBase]: 6001/8381 cut-off events. [2025-03-08 17:30:46,044 INFO L125 PetriNetUnfolderBase]: For 1006/1006 co-relation queries the response was YES. [2025-03-08 17:30:46,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17868 conditions, 8381 events. 6001/8381 cut-off events. For 1006/1006 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 42257 event pairs, 782 based on Foata normal form. 2/7397 useless extension candidates. Maximal degree in co-relation 14020. Up to 2563 conditions per place. [2025-03-08 17:30:46,116 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 158 selfloop transitions, 7 changer transitions 26/195 dead transitions. [2025-03-08 17:30:46,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 195 transitions, 858 flow [2025-03-08 17:30:46,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 17:30:46,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-08 17:30:46,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 257 transitions. [2025-03-08 17:30:46,118 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5244897959183673 [2025-03-08 17:30:46,118 INFO L175 Difference]: Start difference. First operand has 40 places, 45 transitions, 106 flow. Second operand 10 states and 257 transitions. [2025-03-08 17:30:46,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 195 transitions, 858 flow [2025-03-08 17:30:46,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 195 transitions, 838 flow, removed 4 selfloop flow, removed 1 redundant places. [2025-03-08 17:30:46,177 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 151 flow [2025-03-08 17:30:46,177 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=151, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2025-03-08 17:30:46,177 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 12 predicate places. [2025-03-08 17:30:46,177 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 151 flow [2025-03-08 17:30:46,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 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) [2025-03-08 17:30:46,178 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:30:46,178 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:30:46,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 17:30:46,180 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)] === [2025-03-08 17:30:46,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:30:46,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1835078655, now seen corresponding path program 2 times [2025-03-08 17:30:46,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:30:46,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168715501] [2025-03-08 17:30:46,182 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:30:46,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:30:46,195 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 1 equivalence classes. [2025-03-08 17:30:46,230 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-08 17:30:46,230 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-08 17:30:46,230 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:30:46,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:30:46,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:30:46,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168715501] [2025-03-08 17:30:46,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168715501] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:30:46,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:30:46,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 17:30:46,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399585323] [2025-03-08 17:30:46,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:30:46,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 17:30:46,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:30:46,656 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 17:30:46,656 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-08 17:30:46,656 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-08 17:30:46,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 151 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:30:46,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:30:46,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-08 17:30:46,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:30:47,439 INFO L124 PetriNetUnfolderBase]: 6845/9733 cut-off events. [2025-03-08 17:30:47,439 INFO L125 PetriNetUnfolderBase]: For 2952/2952 co-relation queries the response was YES. [2025-03-08 17:30:47,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21710 conditions, 9733 events. 6845/9733 cut-off events. For 2952/2952 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 51887 event pairs, 3180 based on Foata normal form. 2/9153 useless extension candidates. Maximal degree in co-relation 21659. Up to 5930 conditions per place. [2025-03-08 17:30:47,475 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 80 selfloop transitions, 4 changer transitions 15/103 dead transitions. [2025-03-08 17:30:47,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 103 transitions, 507 flow [2025-03-08 17:30:47,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 17:30:47,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-08 17:30:47,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2025-03-08 17:30:47,476 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5061224489795918 [2025-03-08 17:30:47,476 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 151 flow. Second operand 5 states and 124 transitions. [2025-03-08 17:30:47,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 103 transitions, 507 flow [2025-03-08 17:30:47,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 103 transitions, 493 flow, removed 7 selfloop flow, removed 2 redundant places. [2025-03-08 17:30:47,488 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 172 flow [2025-03-08 17:30:47,489 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=172, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2025-03-08 17:30:47,489 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 15 predicate places. [2025-03-08 17:30:47,489 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 172 flow [2025-03-08 17:30:47,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:30:47,490 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:30:47,490 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:30:47,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 17:30:47,490 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)] === [2025-03-08 17:30:47,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:30:47,490 INFO L85 PathProgramCache]: Analyzing trace with hash 509429915, now seen corresponding path program 3 times [2025-03-08 17:30:47,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:30:47,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975164334] [2025-03-08 17:30:47,491 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 17:30:47,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:30:47,498 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 1 equivalence classes. [2025-03-08 17:30:47,506 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-08 17:30:47,507 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-08 17:30:47,507 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:30:47,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:30:47,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:30:47,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975164334] [2025-03-08 17:30:47,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975164334] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:30:47,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:30:47,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 17:30:47,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782919267] [2025-03-08 17:30:47,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:30:47,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 17:30:47,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:30:47,778 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 17:30:47,778 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 17:30:47,778 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-08 17:30:47,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 172 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:30:47,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:30:47,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-08 17:30:47,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:30:48,481 INFO L124 PetriNetUnfolderBase]: 7961/11341 cut-off events. [2025-03-08 17:30:48,482 INFO L125 PetriNetUnfolderBase]: For 6480/6480 co-relation queries the response was YES. [2025-03-08 17:30:48,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26069 conditions, 11341 events. 7961/11341 cut-off events. For 6480/6480 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 63094 event pairs, 1382 based on Foata normal form. 2/10740 useless extension candidates. Maximal degree in co-relation 26016. Up to 7504 conditions per place. [2025-03-08 17:30:48,523 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 82 selfloop transitions, 4 changer transitions 15/105 dead transitions. [2025-03-08 17:30:48,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 105 transitions, 532 flow [2025-03-08 17:30:48,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 17:30:48,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-08 17:30:48,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2025-03-08 17:30:48,524 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5183673469387755 [2025-03-08 17:30:48,524 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 172 flow. Second operand 5 states and 127 transitions. [2025-03-08 17:30:48,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 105 transitions, 532 flow [2025-03-08 17:30:48,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 105 transitions, 515 flow, removed 6 selfloop flow, removed 2 redundant places. [2025-03-08 17:30:48,612 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 189 flow [2025-03-08 17:30:48,612 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=189, PETRI_PLACES=62, PETRI_TRANSITIONS=52} [2025-03-08 17:30:48,613 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 19 predicate places. [2025-03-08 17:30:48,613 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 189 flow [2025-03-08 17:30:48,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:30:48,614 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:30:48,614 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:30:48,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 17:30:48,614 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)] === [2025-03-08 17:30:48,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:30:48,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1360162209, now seen corresponding path program 4 times [2025-03-08 17:30:48,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:30:48,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412133580] [2025-03-08 17:30:48,615 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 17:30:48,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:30:48,626 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 26 statements into 2 equivalence classes. [2025-03-08 17:30:48,633 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 22 of 26 statements. [2025-03-08 17:30:48,633 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-08 17:30:48,633 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:30:48,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:30:48,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:30:48,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412133580] [2025-03-08 17:30:48,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412133580] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:30:48,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:30:48,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 17:30:48,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960575769] [2025-03-08 17:30:48,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:30:48,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 17:30:48,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:30:48,903 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 17:30:48,903 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-08 17:30:48,903 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-08 17:30:48,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 189 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:30:48,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:30:48,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-08 17:30:48,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:30:49,695 INFO L124 PetriNetUnfolderBase]: 8465/12206 cut-off events. [2025-03-08 17:30:49,695 INFO L125 PetriNetUnfolderBase]: For 9847/9847 co-relation queries the response was YES. [2025-03-08 17:30:49,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28464 conditions, 12206 events. 8465/12206 cut-off events. For 9847/9847 co-relation queries the response was YES. Maximal size of possible extension queue 602. Compared 68801 event pairs, 4476 based on Foata normal form. 2/11553 useless extension candidates. Maximal degree in co-relation 28393. Up to 8302 conditions per place. [2025-03-08 17:30:49,753 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 80 selfloop transitions, 5 changer transitions 16/105 dead transitions. [2025-03-08 17:30:49,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 105 transitions, 582 flow [2025-03-08 17:30:49,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 17:30:49,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-08 17:30:49,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2025-03-08 17:30:49,754 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49795918367346936 [2025-03-08 17:30:49,755 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 189 flow. Second operand 5 states and 122 transitions. [2025-03-08 17:30:49,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 105 transitions, 582 flow [2025-03-08 17:30:49,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 105 transitions, 557 flow, removed 9 selfloop flow, removed 3 redundant places. [2025-03-08 17:30:49,778 INFO L231 Difference]: Finished difference. Result has 65 places, 54 transitions, 229 flow [2025-03-08 17:30:49,779 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=229, PETRI_PLACES=65, PETRI_TRANSITIONS=54} [2025-03-08 17:30:49,779 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 22 predicate places. [2025-03-08 17:30:49,779 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 54 transitions, 229 flow [2025-03-08 17:30:49,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:30:49,779 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:30:49,779 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:30:49,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 17:30:49,780 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)] === [2025-03-08 17:30:49,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:30:49,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1612504509, now seen corresponding path program 5 times [2025-03-08 17:30:49,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:30:49,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272093237] [2025-03-08 17:30:49,780 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 17:30:49,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:30:49,787 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 26 statements into 1 equivalence classes. [2025-03-08 17:30:49,803 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-08 17:30:49,805 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-08 17:30:49,806 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:30:50,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:30:50,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:30:50,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272093237] [2025-03-08 17:30:50,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272093237] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:30:50,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:30:50,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 17:30:50,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276737892] [2025-03-08 17:30:50,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:30:50,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 17:30:50,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:30:50,301 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 17:30:50,301 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-03-08 17:30:50,320 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-08 17:30:50,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 54 transitions, 229 flow. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 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) [2025-03-08 17:30:50,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:30:50,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-08 17:30:50,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:30:51,065 INFO L124 PetriNetUnfolderBase]: 8341/11935 cut-off events. [2025-03-08 17:30:51,065 INFO L125 PetriNetUnfolderBase]: For 11492/11492 co-relation queries the response was YES. [2025-03-08 17:30:51,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28432 conditions, 11935 events. 8341/11935 cut-off events. For 11492/11492 co-relation queries the response was YES. Maximal size of possible extension queue 586. Compared 66585 event pairs, 5208 based on Foata normal form. 1/11274 useless extension candidates. Maximal degree in co-relation 28364. Up to 5708 conditions per place. [2025-03-08 17:30:51,120 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 125 selfloop transitions, 7 changer transitions 13/149 dead transitions. [2025-03-08 17:30:51,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 149 transitions, 801 flow [2025-03-08 17:30:51,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 17:30:51,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-08 17:30:51,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2025-03-08 17:30:51,122 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5335276967930029 [2025-03-08 17:30:51,122 INFO L175 Difference]: Start difference. First operand has 65 places, 54 transitions, 229 flow. Second operand 7 states and 183 transitions. [2025-03-08 17:30:51,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 149 transitions, 801 flow [2025-03-08 17:30:51,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 149 transitions, 775 flow, removed 9 selfloop flow, removed 3 redundant places. [2025-03-08 17:30:51,150 INFO L231 Difference]: Finished difference. Result has 71 places, 56 transitions, 262 flow [2025-03-08 17:30:51,151 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=262, PETRI_PLACES=71, PETRI_TRANSITIONS=56} [2025-03-08 17:30:51,153 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 28 predicate places. [2025-03-08 17:30:51,154 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 56 transitions, 262 flow [2025-03-08 17:30:51,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 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) [2025-03-08 17:30:51,154 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:30:51,154 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:30:51,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 17:30:51,155 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)] === [2025-03-08 17:30:51,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:30:51,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1267886915, now seen corresponding path program 6 times [2025-03-08 17:30:51,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:30:51,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356765265] [2025-03-08 17:30:51,155 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 17:30:51,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:30:51,165 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 26 statements into 1 equivalence classes. [2025-03-08 17:30:51,181 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-08 17:30:51,181 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-08 17:30:51,181 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:30:51,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:30:51,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:30:51,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356765265] [2025-03-08 17:30:51,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356765265] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:30:51,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:30:51,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 17:30:51,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464755552] [2025-03-08 17:30:51,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:30:51,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 17:30:51,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:30:51,556 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 17:30:51,557 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-08 17:30:51,581 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-08 17:30:51,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 56 transitions, 262 flow. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 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) [2025-03-08 17:30:51,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:30:51,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-08 17:30:51,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:30:52,589 INFO L124 PetriNetUnfolderBase]: 8113/11654 cut-off events. [2025-03-08 17:30:52,589 INFO L125 PetriNetUnfolderBase]: For 9943/9943 co-relation queries the response was YES. [2025-03-08 17:30:52,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27609 conditions, 11654 events. 8113/11654 cut-off events. For 9943/9943 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 64868 event pairs, 5155 based on Foata normal form. 1/11000 useless extension candidates. Maximal degree in co-relation 27543. Up to 5708 conditions per place. [2025-03-08 17:30:52,706 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 122 selfloop transitions, 6 changer transitions 13/145 dead transitions. [2025-03-08 17:30:52,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 145 transitions, 788 flow [2025-03-08 17:30:52,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 17:30:52,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-08 17:30:52,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2025-03-08 17:30:52,708 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.521865889212828 [2025-03-08 17:30:52,708 INFO L175 Difference]: Start difference. First operand has 71 places, 56 transitions, 262 flow. Second operand 7 states and 179 transitions. [2025-03-08 17:30:52,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 145 transitions, 788 flow [2025-03-08 17:30:52,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 145 transitions, 773 flow, removed 5 selfloop flow, removed 3 redundant places. [2025-03-08 17:30:52,745 INFO L231 Difference]: Finished difference. Result has 76 places, 58 transitions, 289 flow [2025-03-08 17:30:52,745 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=289, PETRI_PLACES=76, PETRI_TRANSITIONS=58} [2025-03-08 17:30:52,747 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 33 predicate places. [2025-03-08 17:30:52,747 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 58 transitions, 289 flow [2025-03-08 17:30:52,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 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) [2025-03-08 17:30:52,747 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:30:52,747 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] [2025-03-08 17:30:52,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 17:30:52,748 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)] === [2025-03-08 17:30:52,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:30:52,748 INFO L85 PathProgramCache]: Analyzing trace with hash 99632273, now seen corresponding path program 1 times [2025-03-08 17:30:52,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:30:52,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979195182] [2025-03-08 17:30:52,749 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:30:52,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:30:52,758 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-08 17:30:52,764 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-08 17:30:52,765 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:30:52,765 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:30:52,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:30:52,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:30:52,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979195182] [2025-03-08 17:30:52,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979195182] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:30:52,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442382555] [2025-03-08 17:30:52,919 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:30:52,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:30:52,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:30:52,921 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) [2025-03-08 17:30:52,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 17:30:52,973 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-08 17:30:52,997 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-08 17:30:52,997 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:30:52,997 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:30:53,000 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-08 17:30:53,004 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:30:53,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 17:30:53,212 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 17:30:53,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442382555] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:30:53,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 17:30:53,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2025-03-08 17:30:53,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439460603] [2025-03-08 17:30:53,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:30:53,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 17:30:53,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:30:53,213 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 17:30:53,213 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2025-03-08 17:30:53,214 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-08 17:30:53,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 58 transitions, 289 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:30:53,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:30:53,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-08 17:30:53,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:30:53,828 INFO L124 PetriNetUnfolderBase]: 8282/11822 cut-off events. [2025-03-08 17:30:53,828 INFO L125 PetriNetUnfolderBase]: For 11308/11308 co-relation queries the response was YES. [2025-03-08 17:30:53,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28364 conditions, 11822 events. 8282/11822 cut-off events. For 11308/11308 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 66127 event pairs, 4388 based on Foata normal form. 1/11138 useless extension candidates. Maximal degree in co-relation 28300. Up to 8322 conditions per place. [2025-03-08 17:30:53,871 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 90 selfloop transitions, 7 changer transitions 13/114 dead transitions. [2025-03-08 17:30:53,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 114 transitions, 659 flow [2025-03-08 17:30:53,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 17:30:53,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-08 17:30:53,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2025-03-08 17:30:53,872 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2025-03-08 17:30:53,872 INFO L175 Difference]: Start difference. First operand has 76 places, 58 transitions, 289 flow. Second operand 5 states and 130 transitions. [2025-03-08 17:30:53,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 114 transitions, 659 flow [2025-03-08 17:30:53,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 114 transitions, 646 flow, removed 4 selfloop flow, removed 3 redundant places. [2025-03-08 17:30:53,909 INFO L231 Difference]: Finished difference. Result has 78 places, 58 transitions, 295 flow [2025-03-08 17:30:53,909 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=295, PETRI_PLACES=78, PETRI_TRANSITIONS=58} [2025-03-08 17:30:53,909 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 35 predicate places. [2025-03-08 17:30:53,910 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 58 transitions, 295 flow [2025-03-08 17:30:53,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:30:53,910 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:30:53,910 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] [2025-03-08 17:30:53,916 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 17:30:54,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:30:54,110 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)] === [2025-03-08 17:30:54,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:30:54,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1172643339, now seen corresponding path program 2 times [2025-03-08 17:30:54,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:30:54,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995838228] [2025-03-08 17:30:54,111 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:30:54,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:30:54,118 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-03-08 17:30:54,131 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 26 of 27 statements. [2025-03-08 17:30:54,132 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-08 17:30:54,132 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:30:54,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 17:30:54,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:30:54,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995838228] [2025-03-08 17:30:54,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995838228] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:30:54,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:30:54,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 17:30:54,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201932695] [2025-03-08 17:30:54,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:30:54,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 17:30:54,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:30:54,552 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 17:30:54,552 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-08 17:30:54,615 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-08 17:30:54,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 58 transitions, 295 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:30:54,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:30:54,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-08 17:30:54,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:30:56,211 INFO L124 PetriNetUnfolderBase]: 19662/28452 cut-off events. [2025-03-08 17:30:56,211 INFO L125 PetriNetUnfolderBase]: For 33171/33171 co-relation queries the response was YES. [2025-03-08 17:30:56,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68192 conditions, 28452 events. 19662/28452 cut-off events. For 33171/33171 co-relation queries the response was YES. Maximal size of possible extension queue 1304. Compared 184109 event pairs, 9654 based on Foata normal form. 1/26818 useless extension candidates. Maximal degree in co-relation 68027. Up to 11112 conditions per place. [2025-03-08 17:30:56,318 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 164 selfloop transitions, 20 changer transitions 4/192 dead transitions. [2025-03-08 17:30:56,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 192 transitions, 1270 flow [2025-03-08 17:30:56,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 17:30:56,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-08 17:30:56,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 226 transitions. [2025-03-08 17:30:56,319 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46122448979591835 [2025-03-08 17:30:56,319 INFO L175 Difference]: Start difference. First operand has 78 places, 58 transitions, 295 flow. Second operand 10 states and 226 transitions. [2025-03-08 17:30:56,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 192 transitions, 1270 flow [2025-03-08 17:30:56,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 192 transitions, 1232 flow, removed 5 selfloop flow, removed 5 redundant places. [2025-03-08 17:30:56,475 INFO L231 Difference]: Finished difference. Result has 87 places, 75 transitions, 500 flow [2025-03-08 17:30:56,476 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=500, PETRI_PLACES=87, PETRI_TRANSITIONS=75} [2025-03-08 17:30:56,476 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 44 predicate places. [2025-03-08 17:30:56,476 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 75 transitions, 500 flow [2025-03-08 17:30:56,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:30:56,476 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:30:56,476 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] [2025-03-08 17:30:56,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 17:30:56,476 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)] === [2025-03-08 17:30:56,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:30:56,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1296994729, now seen corresponding path program 3 times [2025-03-08 17:30:56,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:30:56,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037458728] [2025-03-08 17:30:56,477 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 17:30:56,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:30:56,483 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 27 statements into 2 equivalence classes. [2025-03-08 17:30:56,497 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 26 of 27 statements. [2025-03-08 17:30:56,498 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-08 17:30:56,498 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:30:56,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 17:30:56,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:30:56,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037458728] [2025-03-08 17:30:56,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037458728] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:30:56,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:30:56,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 17:30:56,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179541567] [2025-03-08 17:30:56,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:30:56,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 17:30:56,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:30:56,871 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 17:30:56,871 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-03-08 17:30:56,920 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-08 17:30:56,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 75 transitions, 500 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:30:56,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:30:56,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-08 17:30:56,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:30:58,733 INFO L124 PetriNetUnfolderBase]: 19083/27753 cut-off events. [2025-03-08 17:30:58,733 INFO L125 PetriNetUnfolderBase]: For 37980/37980 co-relation queries the response was YES. [2025-03-08 17:30:58,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70855 conditions, 27753 events. 19083/27753 cut-off events. For 37980/37980 co-relation queries the response was YES. Maximal size of possible extension queue 1269. Compared 179013 event pairs, 12082 based on Foata normal form. 1/26192 useless extension candidates. Maximal degree in co-relation 65377. Up to 11112 conditions per place. [2025-03-08 17:30:58,882 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 159 selfloop transitions, 29 changer transitions 5/197 dead transitions. [2025-03-08 17:30:58,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 197 transitions, 1389 flow [2025-03-08 17:30:58,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-08 17:30:58,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-08 17:30:58,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 246 transitions. [2025-03-08 17:30:58,883 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41836734693877553 [2025-03-08 17:30:58,883 INFO L175 Difference]: Start difference. First operand has 87 places, 75 transitions, 500 flow. Second operand 12 states and 246 transitions. [2025-03-08 17:30:58,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 197 transitions, 1389 flow [2025-03-08 17:30:59,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 197 transitions, 1374 flow, removed 6 selfloop flow, removed 1 redundant places. [2025-03-08 17:30:59,026 INFO L231 Difference]: Finished difference. Result has 103 places, 87 transitions, 741 flow [2025-03-08 17:30:59,026 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=741, PETRI_PLACES=103, PETRI_TRANSITIONS=87} [2025-03-08 17:30:59,027 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 60 predicate places. [2025-03-08 17:30:59,027 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 87 transitions, 741 flow [2025-03-08 17:30:59,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:30:59,027 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:30:59,027 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] [2025-03-08 17:30:59,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 17:30:59,027 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)] === [2025-03-08 17:30:59,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:30:59,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1695743373, now seen corresponding path program 4 times [2025-03-08 17:30:59,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:30:59,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723960986] [2025-03-08 17:30:59,028 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 17:30:59,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:30:59,033 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 27 statements into 2 equivalence classes. [2025-03-08 17:30:59,038 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 22 of 27 statements. [2025-03-08 17:30:59,038 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-08 17:30:59,038 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:30:59,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 17:30:59,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:30:59,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723960986] [2025-03-08 17:30:59,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723960986] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:30:59,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:30:59,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 17:30:59,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720305420] [2025-03-08 17:30:59,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:30:59,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 17:30:59,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:30:59,166 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 17:30:59,166 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 17:30:59,166 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-08 17:30:59,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 87 transitions, 741 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:30:59,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:30:59,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-08 17:30:59,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:31:01,132 INFO L124 PetriNetUnfolderBase]: 19052/27701 cut-off events. [2025-03-08 17:31:01,133 INFO L125 PetriNetUnfolderBase]: For 55693/55693 co-relation queries the response was YES. [2025-03-08 17:31:01,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74788 conditions, 27701 events. 19052/27701 cut-off events. For 55693/55693 co-relation queries the response was YES. Maximal size of possible extension queue 1266. Compared 178323 event pairs, 10376 based on Foata normal form. 4/26129 useless extension candidates. Maximal degree in co-relation 70623. Up to 19246 conditions per place. [2025-03-08 17:31:01,364 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 98 selfloop transitions, 18 changer transitions 19/139 dead transitions. [2025-03-08 17:31:01,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 139 transitions, 1187 flow [2025-03-08 17:31:01,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 17:31:01,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-08 17:31:01,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2025-03-08 17:31:01,365 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2025-03-08 17:31:01,365 INFO L175 Difference]: Start difference. First operand has 103 places, 87 transitions, 741 flow. Second operand 5 states and 126 transitions. [2025-03-08 17:31:01,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 139 transitions, 1187 flow [2025-03-08 17:31:01,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 139 transitions, 1143 flow, removed 12 selfloop flow, removed 6 redundant places. [2025-03-08 17:31:01,662 INFO L231 Difference]: Finished difference. Result has 103 places, 81 transitions, 686 flow [2025-03-08 17:31:01,662 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=701, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=686, PETRI_PLACES=103, PETRI_TRANSITIONS=81} [2025-03-08 17:31:01,663 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 60 predicate places. [2025-03-08 17:31:01,663 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 81 transitions, 686 flow [2025-03-08 17:31:01,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:31:01,663 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:31:01,663 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:31:01,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-08 17:31:01,663 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)] === [2025-03-08 17:31:01,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:31:01,664 INFO L85 PathProgramCache]: Analyzing trace with hash 316716247, now seen corresponding path program 1 times [2025-03-08 17:31:01,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:31:01,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25452537] [2025-03-08 17:31:01,664 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:31:01,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:31:01,671 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-08 17:31:01,675 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-08 17:31:01,675 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:31:01,675 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:31:01,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:31:01,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:31:01,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25452537] [2025-03-08 17:31:01,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25452537] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:31:01,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:31:01,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 17:31:01,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347866933] [2025-03-08 17:31:01,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:31:01,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 17:31:01,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:31:01,723 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 17:31:01,723 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 17:31:01,723 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-08 17:31:01,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 81 transitions, 686 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:31:01,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:31:01,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-08 17:31:01,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:31:03,347 INFO L124 PetriNetUnfolderBase]: 22511/33261 cut-off events. [2025-03-08 17:31:03,347 INFO L125 PetriNetUnfolderBase]: For 81041/81041 co-relation queries the response was YES. [2025-03-08 17:31:03,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87251 conditions, 33261 events. 22511/33261 cut-off events. For 81041/81041 co-relation queries the response was YES. Maximal size of possible extension queue 1586. Compared 228759 event pairs, 1980 based on Foata normal form. 222/31529 useless extension candidates. Maximal degree in co-relation 86988. Up to 18250 conditions per place. [2025-03-08 17:31:03,613 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 117 selfloop transitions, 13 changer transitions 0/134 dead transitions. [2025-03-08 17:31:03,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 134 transitions, 1208 flow [2025-03-08 17:31:03,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 17:31:03,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-08 17:31:03,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2025-03-08 17:31:03,615 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5663265306122449 [2025-03-08 17:31:03,615 INFO L175 Difference]: Start difference. First operand has 103 places, 81 transitions, 686 flow. Second operand 4 states and 111 transitions. [2025-03-08 17:31:03,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 134 transitions, 1208 flow [2025-03-08 17:31:04,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 134 transitions, 1156 flow, removed 13 selfloop flow, removed 7 redundant places. [2025-03-08 17:31:04,327 INFO L231 Difference]: Finished difference. Result has 98 places, 88 transitions, 775 flow [2025-03-08 17:31:04,327 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=775, PETRI_PLACES=98, PETRI_TRANSITIONS=88} [2025-03-08 17:31:04,327 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 55 predicate places. [2025-03-08 17:31:04,327 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 88 transitions, 775 flow [2025-03-08 17:31:04,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:31:04,327 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:31:04,327 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:31:04,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-08 17:31:04,327 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)] === [2025-03-08 17:31:04,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:31:04,328 INFO L85 PathProgramCache]: Analyzing trace with hash -2130581443, now seen corresponding path program 2 times [2025-03-08 17:31:04,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:31:04,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778276642] [2025-03-08 17:31:04,328 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:31:04,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:31:04,333 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 1 equivalence classes. [2025-03-08 17:31:04,336 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-08 17:31:04,336 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-08 17:31:04,336 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:31:04,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:31:04,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:31:04,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778276642] [2025-03-08 17:31:04,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778276642] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:31:04,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:31:04,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 17:31:04,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671925220] [2025-03-08 17:31:04,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:31:04,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 17:31:04,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:31:04,370 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 17:31:04,370 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 17:31:04,370 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-08 17:31:04,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 88 transitions, 775 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:31:04,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:31:04,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-08 17:31:04,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:31:05,784 INFO L124 PetriNetUnfolderBase]: 21031/31133 cut-off events. [2025-03-08 17:31:05,784 INFO L125 PetriNetUnfolderBase]: For 61456/61456 co-relation queries the response was YES. [2025-03-08 17:31:05,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80819 conditions, 31133 events. 21031/31133 cut-off events. For 61456/61456 co-relation queries the response was YES. Maximal size of possible extension queue 1476. Compared 213074 event pairs, 3184 based on Foata normal form. 276/29567 useless extension candidates. Maximal degree in co-relation 71966. Up to 17742 conditions per place. [2025-03-08 17:31:06,017 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 140 selfloop transitions, 14 changer transitions 0/158 dead transitions. [2025-03-08 17:31:06,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 158 transitions, 1629 flow [2025-03-08 17:31:06,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 17:31:06,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-08 17:31:06,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2025-03-08 17:31:06,018 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5663265306122449 [2025-03-08 17:31:06,018 INFO L175 Difference]: Start difference. First operand has 98 places, 88 transitions, 775 flow. Second operand 4 states and 111 transitions. [2025-03-08 17:31:06,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 158 transitions, 1629 flow [2025-03-08 17:31:06,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 158 transitions, 1629 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-08 17:31:06,270 INFO L231 Difference]: Finished difference. Result has 104 places, 99 transitions, 1028 flow [2025-03-08 17:31:06,270 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=775, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1028, PETRI_PLACES=104, PETRI_TRANSITIONS=99} [2025-03-08 17:31:06,271 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 61 predicate places. [2025-03-08 17:31:06,271 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 99 transitions, 1028 flow [2025-03-08 17:31:06,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:31:06,271 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:31:06,271 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:31:06,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-08 17:31:06,271 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)] === [2025-03-08 17:31:06,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:31:06,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1890365527, now seen corresponding path program 1 times [2025-03-08 17:31:06,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:31:06,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555678492] [2025-03-08 17:31:06,272 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:31:06,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:31:06,278 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-08 17:31:06,281 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-08 17:31:06,282 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:31:06,282 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:31:06,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:31:06,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:31:06,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555678492] [2025-03-08 17:31:06,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555678492] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:31:06,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:31:06,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 17:31:06,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348143554] [2025-03-08 17:31:06,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:31:06,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 17:31:06,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:31:06,320 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 17:31:06,320 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 17:31:06,320 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-08 17:31:06,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 99 transitions, 1028 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:31:06,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:31:06,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-08 17:31:06,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:31:07,918 INFO L124 PetriNetUnfolderBase]: 21433/31581 cut-off events. [2025-03-08 17:31:07,919 INFO L125 PetriNetUnfolderBase]: For 62331/62331 co-relation queries the response was YES. [2025-03-08 17:31:08,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85546 conditions, 31581 events. 21433/31581 cut-off events. For 62331/62331 co-relation queries the response was YES. Maximal size of possible extension queue 1497. Compared 214665 event pairs, 6082 based on Foata normal form. 114/29787 useless extension candidates. Maximal degree in co-relation 76042. Up to 17490 conditions per place. [2025-03-08 17:31:08,256 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 113 selfloop transitions, 37 changer transitions 3/157 dead transitions. [2025-03-08 17:31:08,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 157 transitions, 1636 flow [2025-03-08 17:31:08,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 17:31:08,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-08 17:31:08,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2025-03-08 17:31:08,257 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5224489795918368 [2025-03-08 17:31:08,258 INFO L175 Difference]: Start difference. First operand has 104 places, 99 transitions, 1028 flow. Second operand 5 states and 128 transitions. [2025-03-08 17:31:08,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 157 transitions, 1636 flow [2025-03-08 17:31:08,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 157 transitions, 1632 flow, removed 2 selfloop flow, removed 0 redundant places. [2025-03-08 17:31:08,616 INFO L231 Difference]: Finished difference. Result has 110 places, 109 transitions, 1297 flow [2025-03-08 17:31:08,616 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1024, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1297, PETRI_PLACES=110, PETRI_TRANSITIONS=109} [2025-03-08 17:31:08,617 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 67 predicate places. [2025-03-08 17:31:08,617 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 109 transitions, 1297 flow [2025-03-08 17:31:08,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:31:08,617 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:31:08,617 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:31:08,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-08 17:31:08,617 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)] === [2025-03-08 17:31:08,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:31:08,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1628501187, now seen corresponding path program 3 times [2025-03-08 17:31:08,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:31:08,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470170970] [2025-03-08 17:31:08,618 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 17:31:08,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:31:08,623 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 28 statements into 1 equivalence classes. [2025-03-08 17:31:08,627 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-08 17:31:08,627 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-08 17:31:08,627 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:31:08,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:31:08,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:31:08,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470170970] [2025-03-08 17:31:08,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470170970] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:31:08,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:31:08,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 17:31:08,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654610171] [2025-03-08 17:31:08,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:31:08,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 17:31:08,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:31:08,667 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 17:31:08,667 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 17:31:08,667 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-08 17:31:08,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 109 transitions, 1297 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:31:08,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:31:08,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-08 17:31:08,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:31:10,220 INFO L124 PetriNetUnfolderBase]: 20289/29867 cut-off events. [2025-03-08 17:31:10,220 INFO L125 PetriNetUnfolderBase]: For 73843/73843 co-relation queries the response was YES. [2025-03-08 17:31:10,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83568 conditions, 29867 events. 20289/29867 cut-off events. For 73843/73843 co-relation queries the response was YES. Maximal size of possible extension queue 1391. Compared 201157 event pairs, 4646 based on Foata normal form. 108/28231 useless extension candidates. Maximal degree in co-relation 74022. Up to 20044 conditions per place. [2025-03-08 17:31:10,427 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 120 selfloop transitions, 27 changer transitions 8/159 dead transitions. [2025-03-08 17:31:10,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 159 transitions, 1798 flow [2025-03-08 17:31:10,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 17:31:10,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-08 17:31:10,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2025-03-08 17:31:10,428 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2025-03-08 17:31:10,428 INFO L175 Difference]: Start difference. First operand has 110 places, 109 transitions, 1297 flow. Second operand 5 states and 126 transitions. [2025-03-08 17:31:10,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 159 transitions, 1798 flow [2025-03-08 17:31:10,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 159 transitions, 1739 flow, removed 23 selfloop flow, removed 1 redundant places. [2025-03-08 17:31:10,803 INFO L231 Difference]: Finished difference. Result has 114 places, 105 transitions, 1169 flow [2025-03-08 17:31:10,803 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1238, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1169, PETRI_PLACES=114, PETRI_TRANSITIONS=105} [2025-03-08 17:31:10,804 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 71 predicate places. [2025-03-08 17:31:10,804 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 105 transitions, 1169 flow [2025-03-08 17:31:10,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:31:10,804 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:31:10,804 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:31:10,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-08 17:31:10,804 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)] === [2025-03-08 17:31:10,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:31:10,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1976251837, now seen corresponding path program 2 times [2025-03-08 17:31:10,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:31:10,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778794998] [2025-03-08 17:31:10,805 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:31:10,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:31:10,809 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 1 equivalence classes. [2025-03-08 17:31:10,812 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-08 17:31:10,813 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-08 17:31:10,813 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:31:10,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:31:10,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:31:10,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778794998] [2025-03-08 17:31:10,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778794998] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:31:10,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:31:10,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 17:31:10,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542330983] [2025-03-08 17:31:10,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:31:10,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 17:31:10,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:31:10,847 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 17:31:10,847 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 17:31:10,847 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-08 17:31:10,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 105 transitions, 1169 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:31:10,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:31:10,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-08 17:31:10,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:31:12,511 INFO L124 PetriNetUnfolderBase]: 22423/33013 cut-off events. [2025-03-08 17:31:12,512 INFO L125 PetriNetUnfolderBase]: For 80993/80993 co-relation queries the response was YES. [2025-03-08 17:31:12,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89883 conditions, 33013 events. 22423/33013 cut-off events. For 80993/80993 co-relation queries the response was YES. Maximal size of possible extension queue 1609. Compared 226386 event pairs, 4550 based on Foata normal form. 216/31207 useless extension candidates. Maximal degree in co-relation 80280. Up to 20750 conditions per place. [2025-03-08 17:31:12,746 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 123 selfloop transitions, 20 changer transitions 0/147 dead transitions. [2025-03-08 17:31:12,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 147 transitions, 1606 flow [2025-03-08 17:31:12,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 17:31:12,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-08 17:31:12,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2025-03-08 17:31:12,747 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5612244897959183 [2025-03-08 17:31:12,747 INFO L175 Difference]: Start difference. First operand has 114 places, 105 transitions, 1169 flow. Second operand 4 states and 110 transitions. [2025-03-08 17:31:12,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 147 transitions, 1606 flow [2025-03-08 17:31:13,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 147 transitions, 1543 flow, removed 8 selfloop flow, removed 4 redundant places. [2025-03-08 17:31:13,348 INFO L231 Difference]: Finished difference. Result has 114 places, 106 transitions, 1183 flow [2025-03-08 17:31:13,348 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1106, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1183, PETRI_PLACES=114, PETRI_TRANSITIONS=106} [2025-03-08 17:31:13,348 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 71 predicate places. [2025-03-08 17:31:13,348 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 106 transitions, 1183 flow [2025-03-08 17:31:13,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:31:13,348 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:31:13,348 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:31:13,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-08 17:31:13,348 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-08 17:31:13,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:31:13,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1672138207, now seen corresponding path program 3 times [2025-03-08 17:31:13,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:31:13,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054150241] [2025-03-08 17:31:13,349 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 17:31:13,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:31:13,354 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 28 statements into 1 equivalence classes. [2025-03-08 17:31:13,357 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-08 17:31:13,358 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-08 17:31:13,358 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:31:13,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:31:13,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:31:13,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054150241] [2025-03-08 17:31:13,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054150241] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:31:13,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:31:13,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 17:31:13,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531900083] [2025-03-08 17:31:13,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:31:13,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 17:31:13,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:31:13,388 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 17:31:13,388 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 17:31:13,388 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-08 17:31:13,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 106 transitions, 1183 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:31:13,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:31:13,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-08 17:31:13,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:31:15,229 INFO L124 PetriNetUnfolderBase]: 19935/29099 cut-off events. [2025-03-08 17:31:15,229 INFO L125 PetriNetUnfolderBase]: For 70547/70547 co-relation queries the response was YES. [2025-03-08 17:31:15,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82244 conditions, 29099 events. 19935/29099 cut-off events. For 70547/70547 co-relation queries the response was YES. Maximal size of possible extension queue 1369. Compared 192620 event pairs, 8684 based on Foata normal form. 258/27597 useless extension candidates. Maximal degree in co-relation 75830. Up to 17486 conditions per place. [2025-03-08 17:31:15,450 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 122 selfloop transitions, 26 changer transitions 12/164 dead transitions. [2025-03-08 17:31:15,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 164 transitions, 1673 flow [2025-03-08 17:31:15,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 17:31:15,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-08 17:31:15,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2025-03-08 17:31:15,451 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5469387755102041 [2025-03-08 17:31:15,451 INFO L175 Difference]: Start difference. First operand has 114 places, 106 transitions, 1183 flow. Second operand 5 states and 134 transitions. [2025-03-08 17:31:15,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 164 transitions, 1673 flow [2025-03-08 17:31:15,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 164 transitions, 1654 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-03-08 17:31:15,905 INFO L231 Difference]: Finished difference. Result has 118 places, 98 transitions, 1030 flow [2025-03-08 17:31:15,905 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1164, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1030, PETRI_PLACES=118, PETRI_TRANSITIONS=98} [2025-03-08 17:31:15,906 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 75 predicate places. [2025-03-08 17:31:15,906 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 98 transitions, 1030 flow [2025-03-08 17:31:15,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:31:15,906 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:31:15,906 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:31:15,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-08 17:31:15,906 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-08 17:31:15,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:31:15,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1914282533, now seen corresponding path program 4 times [2025-03-08 17:31:15,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:31:15,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25745389] [2025-03-08 17:31:15,907 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 17:31:15,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:31:15,912 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 28 statements into 2 equivalence classes. [2025-03-08 17:31:15,914 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 23 of 28 statements. [2025-03-08 17:31:15,914 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-08 17:31:15,914 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:31:15,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:31:15,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:31:15,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25745389] [2025-03-08 17:31:15,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25745389] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:31:15,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:31:15,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 17:31:15,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835017813] [2025-03-08 17:31:15,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:31:15,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 17:31:15,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:31:15,929 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 17:31:15,930 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 17:31:15,930 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-08 17:31:15,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 98 transitions, 1030 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:31:15,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:31:15,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-08 17:31:15,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:31:17,607 INFO L124 PetriNetUnfolderBase]: 19041/27713 cut-off events. [2025-03-08 17:31:17,607 INFO L125 PetriNetUnfolderBase]: For 74799/74799 co-relation queries the response was YES. [2025-03-08 17:31:17,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78081 conditions, 27713 events. 19041/27713 cut-off events. For 74799/74799 co-relation queries the response was YES. Maximal size of possible extension queue 1311. Compared 181199 event pairs, 7898 based on Foata normal form. 120/26025 useless extension candidates. Maximal degree in co-relation 72970. Up to 15372 conditions per place. [2025-03-08 17:31:17,872 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 106 selfloop transitions, 6 changer transitions 15/131 dead transitions. [2025-03-08 17:31:17,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 131 transitions, 1398 flow [2025-03-08 17:31:17,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 17:31:17,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-08 17:31:17,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 100 transitions. [2025-03-08 17:31:17,873 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2025-03-08 17:31:17,873 INFO L175 Difference]: Start difference. First operand has 118 places, 98 transitions, 1030 flow. Second operand 4 states and 100 transitions. [2025-03-08 17:31:17,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 131 transitions, 1398 flow [2025-03-08 17:31:18,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 131 transitions, 1310 flow, removed 18 selfloop flow, removed 5 redundant places. [2025-03-08 17:31:18,184 INFO L231 Difference]: Finished difference. Result has 117 places, 92 transitions, 846 flow [2025-03-08 17:31:18,184 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=942, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=846, PETRI_PLACES=117, PETRI_TRANSITIONS=92} [2025-03-08 17:31:18,184 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 74 predicate places. [2025-03-08 17:31:18,184 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 92 transitions, 846 flow [2025-03-08 17:31:18,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:31:18,184 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:31:18,184 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:31:18,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-08 17:31:18,184 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-08 17:31:18,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:31:18,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1822963681, now seen corresponding path program 4 times [2025-03-08 17:31:18,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:31:18,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401726431] [2025-03-08 17:31:18,185 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 17:31:18,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:31:18,190 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 28 statements into 2 equivalence classes. [2025-03-08 17:31:18,191 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 23 of 28 statements. [2025-03-08 17:31:18,191 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-08 17:31:18,191 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:31:18,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:31:18,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:31:18,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401726431] [2025-03-08 17:31:18,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401726431] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:31:18,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:31:18,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 17:31:18,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141566720] [2025-03-08 17:31:18,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:31:18,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 17:31:18,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:31:18,203 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 17:31:18,203 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 17:31:18,203 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-08 17:31:18,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 92 transitions, 846 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:31:18,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:31:18,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-08 17:31:18,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:31:19,576 INFO L124 PetriNetUnfolderBase]: 19033/27681 cut-off events. [2025-03-08 17:31:19,576 INFO L125 PetriNetUnfolderBase]: For 60881/60881 co-relation queries the response was YES. [2025-03-08 17:31:19,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77598 conditions, 27681 events. 19033/27681 cut-off events. For 60881/60881 co-relation queries the response was YES. Maximal size of possible extension queue 1301. Compared 181535 event pairs, 10244 based on Foata normal form. 64/25953 useless extension candidates. Maximal degree in co-relation 72832. Up to 20614 conditions per place. [2025-03-08 17:31:19,805 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 101 selfloop transitions, 4 changer transitions 15/124 dead transitions. [2025-03-08 17:31:19,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 124 transitions, 1188 flow [2025-03-08 17:31:19,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 17:31:19,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-08 17:31:19,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions. [2025-03-08 17:31:19,806 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5051020408163265 [2025-03-08 17:31:19,806 INFO L175 Difference]: Start difference. First operand has 117 places, 92 transitions, 846 flow. Second operand 4 states and 99 transitions. [2025-03-08 17:31:19,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 124 transitions, 1188 flow [2025-03-08 17:31:20,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 124 transitions, 1154 flow, removed 6 selfloop flow, removed 3 redundant places. [2025-03-08 17:31:20,049 INFO L231 Difference]: Finished difference. Result has 117 places, 89 transitions, 793 flow [2025-03-08 17:31:20,049 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=812, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=793, PETRI_PLACES=117, PETRI_TRANSITIONS=89} [2025-03-08 17:31:20,049 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 74 predicate places. [2025-03-08 17:31:20,049 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 89 transitions, 793 flow [2025-03-08 17:31:20,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:31:20,049 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:31:20,049 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:31:20,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-08 17:31:20,049 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-08 17:31:20,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:31:20,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1267401089, now seen corresponding path program 5 times [2025-03-08 17:31:20,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:31:20,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468713035] [2025-03-08 17:31:20,050 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 17:31:20,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:31:20,055 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 28 statements into 1 equivalence classes. [2025-03-08 17:31:20,058 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-08 17:31:20,059 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-08 17:31:20,059 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:31:20,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:31:20,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:31:20,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468713035] [2025-03-08 17:31:20,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468713035] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:31:20,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:31:20,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 17:31:20,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559687664] [2025-03-08 17:31:20,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:31:20,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 17:31:20,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:31:20,096 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 17:31:20,096 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 17:31:20,096 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-08 17:31:20,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 89 transitions, 793 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:31:20,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:31:20,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-08 17:31:20,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:31:21,269 INFO L124 PetriNetUnfolderBase]: 17029/24769 cut-off events. [2025-03-08 17:31:21,269 INFO L125 PetriNetUnfolderBase]: For 53043/53043 co-relation queries the response was YES. [2025-03-08 17:31:21,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68565 conditions, 24769 events. 17029/24769 cut-off events. For 53043/53043 co-relation queries the response was YES. Maximal size of possible extension queue 1177. Compared 158379 event pairs, 4144 based on Foata normal form. 270/23385 useless extension candidates. Maximal degree in co-relation 63864. Up to 19064 conditions per place. [2025-03-08 17:31:21,459 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 107 selfloop transitions, 11 changer transitions 4/126 dead transitions. [2025-03-08 17:31:21,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 126 transitions, 1175 flow [2025-03-08 17:31:21,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 17:31:21,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-08 17:31:21,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2025-03-08 17:31:21,460 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2025-03-08 17:31:21,460 INFO L175 Difference]: Start difference. First operand has 117 places, 89 transitions, 793 flow. Second operand 4 states and 105 transitions. [2025-03-08 17:31:21,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 126 transitions, 1175 flow [2025-03-08 17:31:21,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 126 transitions, 1163 flow, removed 4 selfloop flow, removed 2 redundant places. [2025-03-08 17:31:21,658 INFO L231 Difference]: Finished difference. Result has 116 places, 87 transitions, 765 flow [2025-03-08 17:31:21,658 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=781, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=765, PETRI_PLACES=116, PETRI_TRANSITIONS=87} [2025-03-08 17:31:21,659 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 73 predicate places. [2025-03-08 17:31:21,659 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 87 transitions, 765 flow [2025-03-08 17:31:21,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:31:21,659 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:31:21,659 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:31:21,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-08 17:31:21,659 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-08 17:31:21,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:31:21,659 INFO L85 PathProgramCache]: Analyzing trace with hash 806152955, now seen corresponding path program 5 times [2025-03-08 17:31:21,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:31:21,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233100011] [2025-03-08 17:31:21,659 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 17:31:21,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:31:21,663 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 28 statements into 1 equivalence classes. [2025-03-08 17:31:21,666 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-08 17:31:21,666 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-08 17:31:21,666 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:31:21,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:31:21,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:31:21,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233100011] [2025-03-08 17:31:21,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233100011] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:31:21,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:31:21,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 17:31:21,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664986974] [2025-03-08 17:31:21,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:31:21,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 17:31:21,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:31:21,690 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 17:31:21,690 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 17:31:21,690 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-08 17:31:21,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 87 transitions, 765 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:31:21,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:31:21,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-08 17:31:21,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:31:22,749 INFO L124 PetriNetUnfolderBase]: 14759/21383 cut-off events. [2025-03-08 17:31:22,750 INFO L125 PetriNetUnfolderBase]: For 35304/35304 co-relation queries the response was YES. [2025-03-08 17:31:22,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59100 conditions, 21383 events. 14759/21383 cut-off events. For 35304/35304 co-relation queries the response was YES. Maximal size of possible extension queue 974. Compared 133148 event pairs, 9522 based on Foata normal form. 96/19977 useless extension candidates. Maximal degree in co-relation 58712. Up to 19878 conditions per place. [2025-03-08 17:31:22,913 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 66 selfloop transitions, 0 changer transitions 21/91 dead transitions. [2025-03-08 17:31:22,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 91 transitions, 813 flow [2025-03-08 17:31:22,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 17:31:22,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-08 17:31:22,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 82 transitions. [2025-03-08 17:31:22,914 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41836734693877553 [2025-03-08 17:31:22,914 INFO L175 Difference]: Start difference. First operand has 116 places, 87 transitions, 765 flow. Second operand 4 states and 82 transitions. [2025-03-08 17:31:22,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 91 transitions, 813 flow [2025-03-08 17:31:23,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 91 transitions, 760 flow, removed 10 selfloop flow, removed 8 redundant places. [2025-03-08 17:31:23,085 INFO L231 Difference]: Finished difference. Result has 105 places, 70 transitions, 430 flow [2025-03-08 17:31:23,085 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=430, PETRI_PLACES=105, PETRI_TRANSITIONS=70} [2025-03-08 17:31:23,086 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 62 predicate places. [2025-03-08 17:31:23,086 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 70 transitions, 430 flow [2025-03-08 17:31:23,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:31:23,086 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:31:23,086 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:31:23,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-08 17:31:23,086 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-08 17:31:23,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:31:23,086 INFO L85 PathProgramCache]: Analyzing trace with hash 396290689, now seen corresponding path program 6 times [2025-03-08 17:31:23,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:31:23,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596570686] [2025-03-08 17:31:23,086 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 17:31:23,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:31:23,091 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 28 statements into 1 equivalence classes. [2025-03-08 17:31:23,093 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-08 17:31:23,093 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-08 17:31:23,093 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:31:23,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:31:23,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:31:23,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596570686] [2025-03-08 17:31:23,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596570686] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:31:23,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:31:23,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 17:31:23,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840576231] [2025-03-08 17:31:23,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:31:23,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 17:31:23,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:31:23,124 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 17:31:23,124 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 17:31:23,125 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-08 17:31:23,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 70 transitions, 430 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:31:23,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:31:23,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-08 17:31:23,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:31:23,930 INFO L124 PetriNetUnfolderBase]: 12937/18605 cut-off events. [2025-03-08 17:31:23,930 INFO L125 PetriNetUnfolderBase]: For 18290/18290 co-relation queries the response was YES. [2025-03-08 17:31:24,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49213 conditions, 18605 events. 12937/18605 cut-off events. For 18290/18290 co-relation queries the response was YES. Maximal size of possible extension queue 871. Compared 111186 event pairs, 2718 based on Foata normal form. 80/17329 useless extension candidates. Maximal degree in co-relation 49188. Up to 16128 conditions per place. [2025-03-08 17:31:24,051 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 73 selfloop transitions, 4 changer transitions 11/92 dead transitions. [2025-03-08 17:31:24,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 92 transitions, 653 flow [2025-03-08 17:31:24,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 17:31:24,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-08 17:31:24,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2025-03-08 17:31:24,052 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2025-03-08 17:31:24,052 INFO L175 Difference]: Start difference. First operand has 105 places, 70 transitions, 430 flow. Second operand 4 states and 91 transitions. [2025-03-08 17:31:24,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 92 transitions, 653 flow [2025-03-08 17:31:24,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 92 transitions, 627 flow, removed 8 selfloop flow, removed 7 redundant places. [2025-03-08 17:31:24,101 INFO L231 Difference]: Finished difference. Result has 88 places, 66 transitions, 360 flow [2025-03-08 17:31:24,101 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=360, PETRI_PLACES=88, PETRI_TRANSITIONS=66} [2025-03-08 17:31:24,102 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 45 predicate places. [2025-03-08 17:31:24,102 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 66 transitions, 360 flow [2025-03-08 17:31:24,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:31:24,102 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:31:24,102 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:31:24,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-08 17:31:24,102 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-08 17:31:24,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:31:24,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1631078493, now seen corresponding path program 1 times [2025-03-08 17:31:24,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:31:24,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024826575] [2025-03-08 17:31:24,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:31:24,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:31:24,107 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-03-08 17:31:24,112 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-08 17:31:24,112 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:31:24,112 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:31:24,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:31:24,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:31:24,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024826575] [2025-03-08 17:31:24,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024826575] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:31:24,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:31:24,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 17:31:24,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650918574] [2025-03-08 17:31:24,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:31:24,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 17:31:24,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:31:24,412 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 17:31:24,412 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-03-08 17:31:24,462 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-08 17:31:24,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 66 transitions, 360 flow. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 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) [2025-03-08 17:31:24,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:31:24,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-08 17:31:24,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:31:25,900 INFO L124 PetriNetUnfolderBase]: 19664/27990 cut-off events. [2025-03-08 17:31:25,900 INFO L125 PetriNetUnfolderBase]: For 23520/23520 co-relation queries the response was YES. [2025-03-08 17:31:25,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72851 conditions, 27990 events. 19664/27990 cut-off events. For 23520/23520 co-relation queries the response was YES. Maximal size of possible extension queue 1267. Compared 173821 event pairs, 3552 based on Foata normal form. 2/26203 useless extension candidates. Maximal degree in co-relation 72831. Up to 12865 conditions per place. [2025-03-08 17:31:26,060 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 225 selfloop transitions, 21 changer transitions 1/251 dead transitions. [2025-03-08 17:31:26,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 251 transitions, 1754 flow [2025-03-08 17:31:26,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-08 17:31:26,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-08 17:31:26,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 270 transitions. [2025-03-08 17:31:26,061 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45918367346938777 [2025-03-08 17:31:26,061 INFO L175 Difference]: Start difference. First operand has 88 places, 66 transitions, 360 flow. Second operand 12 states and 270 transitions. [2025-03-08 17:31:26,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 251 transitions, 1754 flow [2025-03-08 17:31:26,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 251 transitions, 1697 flow, removed 8 selfloop flow, removed 6 redundant places. [2025-03-08 17:31:26,106 INFO L231 Difference]: Finished difference. Result has 93 places, 86 transitions, 487 flow [2025-03-08 17:31:26,106 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=487, PETRI_PLACES=93, PETRI_TRANSITIONS=86} [2025-03-08 17:31:26,106 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 50 predicate places. [2025-03-08 17:31:26,106 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 86 transitions, 487 flow [2025-03-08 17:31:26,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 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) [2025-03-08 17:31:26,106 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:31:26,106 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:31:26,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-03-08 17:31:26,106 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-08 17:31:26,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:31:26,107 INFO L85 PathProgramCache]: Analyzing trace with hash 894621232, now seen corresponding path program 1 times [2025-03-08 17:31:26,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:31:26,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441108988] [2025-03-08 17:31:26,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:31:26,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:31:26,112 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-08 17:31:26,119 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-08 17:31:26,120 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:31:26,120 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:31:26,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:31:26,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:31:26,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441108988] [2025-03-08 17:31:26,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441108988] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:31:26,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961821181] [2025-03-08 17:31:26,352 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:31:26,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:31:26,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:31:26,354 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) [2025-03-08 17:31:26,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 17:31:26,398 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-08 17:31:26,418 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-08 17:31:26,418 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:31:26,418 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:31:26,420 INFO L256 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-03-08 17:31:26,421 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:31:26,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:31:26,793 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:31:27,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 17:31:27,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961821181] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-08 17:31:27,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-08 17:31:27,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 11] total 26 [2025-03-08 17:31:27,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984906335] [2025-03-08 17:31:27,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:31:27,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 17:31:27,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:31:27,901 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 17:31:27,901 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2025-03-08 17:31:27,954 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-08 17:31:27,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 86 transitions, 487 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 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) [2025-03-08 17:31:27,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:31:27,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-08 17:31:27,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:31:30,930 INFO L124 PetriNetUnfolderBase]: 32210/46709 cut-off events. [2025-03-08 17:31:30,930 INFO L125 PetriNetUnfolderBase]: For 36955/36979 co-relation queries the response was YES. [2025-03-08 17:31:31,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135350 conditions, 46709 events. 32210/46709 cut-off events. For 36955/36979 co-relation queries the response was YES. Maximal size of possible extension queue 2028. Compared 321399 event pairs, 2475 based on Foata normal form. 32/46730 useless extension candidates. Maximal degree in co-relation 135329. Up to 9259 conditions per place. [2025-03-08 17:31:31,311 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 351 selfloop transitions, 87 changer transitions 13/455 dead transitions. [2025-03-08 17:31:31,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 455 transitions, 3025 flow [2025-03-08 17:31:31,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-08 17:31:31,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-08 17:31:31,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 381 transitions. [2025-03-08 17:31:31,312 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5183673469387755 [2025-03-08 17:31:31,312 INFO L175 Difference]: Start difference. First operand has 93 places, 86 transitions, 487 flow. Second operand 15 states and 381 transitions. [2025-03-08 17:31:31,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 455 transitions, 3025 flow [2025-03-08 17:31:31,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 455 transitions, 3022 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-08 17:31:31,406 INFO L231 Difference]: Finished difference. Result has 118 places, 184 transitions, 1394 flow [2025-03-08 17:31:31,406 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1394, PETRI_PLACES=118, PETRI_TRANSITIONS=184} [2025-03-08 17:31:31,406 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 75 predicate places. [2025-03-08 17:31:31,406 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 184 transitions, 1394 flow [2025-03-08 17:31:31,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 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) [2025-03-08 17:31:31,407 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:31:31,407 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:31:31,412 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-08 17:31:31,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-03-08 17:31:31,607 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-08 17:31:31,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:31:31,608 INFO L85 PathProgramCache]: Analyzing trace with hash 2022418369, now seen corresponding path program 1 times [2025-03-08 17:31:31,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:31:31,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856050030] [2025-03-08 17:31:31,608 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:31:31,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:31:31,612 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-08 17:31:31,616 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-08 17:31:31,616 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:31:31,616 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:31:31,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:31:31,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:31:31,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856050030] [2025-03-08 17:31:31,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856050030] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:31:31,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285750315] [2025-03-08 17:31:31,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:31:31,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:31:31,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:31:31,706 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:31:31,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 17:31:31,753 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-08 17:31:31,773 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-08 17:31:31,773 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:31:31,773 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:31:31,774 INFO L256 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-03-08 17:31:31,776 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:31:32,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:31:32,073 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:31:33,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 17:31:33,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285750315] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-08 17:31:33,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-08 17:31:33,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7, 11] total 24 [2025-03-08 17:31:33,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71091832] [2025-03-08 17:31:33,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:31:33,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 17:31:33,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:31:33,279 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 17:31:33,279 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2025-03-08 17:31:33,335 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-08 17:31:33,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 184 transitions, 1394 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 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) [2025-03-08 17:31:33,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:31:33,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-08 17:31:33,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:31:40,513 INFO L124 PetriNetUnfolderBase]: 56396/81278 cut-off events. [2025-03-08 17:31:40,514 INFO L125 PetriNetUnfolderBase]: For 216710/216959 co-relation queries the response was YES. [2025-03-08 17:31:41,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299266 conditions, 81278 events. 56396/81278 cut-off events. For 216710/216959 co-relation queries the response was YES. Maximal size of possible extension queue 3750. Compared 594378 event pairs, 4788 based on Foata normal form. 182/81449 useless extension candidates. Maximal degree in co-relation 299232. Up to 25599 conditions per place. [2025-03-08 17:31:41,312 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 412 selfloop transitions, 271 changer transitions 13/700 dead transitions. [2025-03-08 17:31:41,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 700 transitions, 6427 flow [2025-03-08 17:31:41,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-03-08 17:31:41,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2025-03-08 17:31:41,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 470 transitions. [2025-03-08 17:31:41,314 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47959183673469385 [2025-03-08 17:31:41,314 INFO L175 Difference]: Start difference. First operand has 118 places, 184 transitions, 1394 flow. Second operand 20 states and 470 transitions. [2025-03-08 17:31:41,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 700 transitions, 6427 flow [2025-03-08 17:31:42,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 700 transitions, 6348 flow, removed 24 selfloop flow, removed 2 redundant places. [2025-03-08 17:31:42,976 INFO L231 Difference]: Finished difference. Result has 149 places, 372 transitions, 3857 flow [2025-03-08 17:31:42,977 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1375, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3857, PETRI_PLACES=149, PETRI_TRANSITIONS=372} [2025-03-08 17:31:42,977 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 106 predicate places. [2025-03-08 17:31:42,977 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 372 transitions, 3857 flow [2025-03-08 17:31:42,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 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) [2025-03-08 17:31:42,977 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:31:42,977 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:31:42,984 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-08 17:31:43,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:31:43,178 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-08 17:31:43,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:31:43,178 INFO L85 PathProgramCache]: Analyzing trace with hash -268108909, now seen corresponding path program 2 times [2025-03-08 17:31:43,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:31:43,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850382062] [2025-03-08 17:31:43,178 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:31:43,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:31:43,183 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-03-08 17:31:43,189 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 30 of 31 statements. [2025-03-08 17:31:43,189 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-08 17:31:43,189 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:31:43,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 17:31:43,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:31:43,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850382062] [2025-03-08 17:31:43,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850382062] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:31:43,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:31:43,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-08 17:31:43,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123162985] [2025-03-08 17:31:43,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:31:43,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-08 17:31:43,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:31:43,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-08 17:31:43,486 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2025-03-08 17:31:43,532 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-08 17:31:43,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 372 transitions, 3857 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 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) [2025-03-08 17:31:43,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:31:43,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-08 17:31:43,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:31:52,977 INFO L124 PetriNetUnfolderBase]: 65773/94468 cut-off events. [2025-03-08 17:31:52,977 INFO L125 PetriNetUnfolderBase]: For 552010/552348 co-relation queries the response was YES. [2025-03-08 17:31:53,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 411054 conditions, 94468 events. 65773/94468 cut-off events. For 552010/552348 co-relation queries the response was YES. Maximal size of possible extension queue 4347. Compared 698102 event pairs, 13915 based on Foata normal form. 305/94765 useless extension candidates. Maximal degree in co-relation 411006. Up to 68168 conditions per place. [2025-03-08 17:31:54,166 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 492 selfloop transitions, 275 changer transitions 2/773 dead transitions. [2025-03-08 17:31:54,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 773 transitions, 9256 flow [2025-03-08 17:31:54,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-08 17:31:54,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-08 17:31:54,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 248 transitions. [2025-03-08 17:31:54,167 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4601113172541744 [2025-03-08 17:31:54,167 INFO L175 Difference]: Start difference. First operand has 149 places, 372 transitions, 3857 flow. Second operand 11 states and 248 transitions. [2025-03-08 17:31:54,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 773 transitions, 9256 flow [2025-03-08 17:32:01,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 773 transitions, 8872 flow, removed 180 selfloop flow, removed 2 redundant places. [2025-03-08 17:32:01,847 INFO L231 Difference]: Finished difference. Result has 162 places, 546 transitions, 6628 flow [2025-03-08 17:32:01,847 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3662, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6628, PETRI_PLACES=162, PETRI_TRANSITIONS=546} [2025-03-08 17:32:01,847 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 119 predicate places. [2025-03-08 17:32:01,847 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 546 transitions, 6628 flow [2025-03-08 17:32:01,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 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) [2025-03-08 17:32:01,847 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:32:01,847 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:32:01,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-03-08 17:32:01,847 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-08 17:32:01,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:32:01,848 INFO L85 PathProgramCache]: Analyzing trace with hash -37586203, now seen corresponding path program 3 times [2025-03-08 17:32:01,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:32:01,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025644499] [2025-03-08 17:32:01,848 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 17:32:01,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:32:01,852 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 2 equivalence classes. [2025-03-08 17:32:01,857 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 30 of 31 statements. [2025-03-08 17:32:01,857 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-08 17:32:01,857 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:32:02,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 17:32:02,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:32:02,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025644499] [2025-03-08 17:32:02,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025644499] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:32:02,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:32:02,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 17:32:02,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255109079] [2025-03-08 17:32:02,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:32:02,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 17:32:02,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:32:02,188 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 17:32:02,189 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-03-08 17:32:02,231 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 49 [2025-03-08 17:32:02,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 546 transitions, 6628 flow. Second operand has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:32:02,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:32:02,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 49 [2025-03-08 17:32:02,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand