./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 735b3cc8 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0d0975dc4466296431d96c26938a2e71864de63aba998f18ecd8a32ca341796b --- Real Ultimate output --- This is Ultimate 0.3.0-?-735b3cc-m [2025-03-14 01:01:42,481 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-14 01:01:42,542 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-14 01:01:42,549 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-14 01:01:42,549 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-14 01:01:42,568 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-14 01:01:42,570 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-14 01:01:42,570 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-14 01:01:42,571 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-14 01:01:42,571 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-14 01:01:42,571 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-14 01:01:42,572 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-14 01:01:42,572 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-14 01:01:42,572 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-14 01:01:42,572 INFO L153 SettingsManager]: * Use SBE=true [2025-03-14 01:01:42,572 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-14 01:01:42,573 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-14 01:01:42,573 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-14 01:01:42,573 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-14 01:01:42,573 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-14 01:01:42,573 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-14 01:01:42,573 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-14 01:01:42,573 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-14 01:01:42,573 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-14 01:01:42,573 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-14 01:01:42,574 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-14 01:01:42,574 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-14 01:01:42,574 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-14 01:01:42,574 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-14 01:01:42,574 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-14 01:01:42,574 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-14 01:01:42,574 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-14 01:01:42,574 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-14 01:01:42,575 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-14 01:01:42,575 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-14 01:01:42,575 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-14 01:01:42,575 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-14 01:01:42,575 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-14 01:01:42,575 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-14 01:01:42,575 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-14 01:01:42,575 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-14 01:01:42,575 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-14 01:01:42,575 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-14 01:01:42,575 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d0975dc4466296431d96c26938a2e71864de63aba998f18ecd8a32ca341796b [2025-03-14 01:01:42,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-14 01:01:42,828 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-14 01:01:42,830 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-14 01:01:42,830 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-14 01:01:42,831 INFO L274 PluginConnector]: CDTParser initialized [2025-03-14 01:01:42,832 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c [2025-03-14 01:01:44,006 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c93276fc8/765d0bc167ae4d26a7a3a09cb41a59cc/FLAG76550519b [2025-03-14 01:01:44,257 INFO L384 CDTParser]: Found 1 translation units. [2025-03-14 01:01:44,258 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c [2025-03-14 01:01:44,268 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c93276fc8/765d0bc167ae4d26a7a3a09cb41a59cc/FLAG76550519b [2025-03-14 01:01:44,584 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c93276fc8/765d0bc167ae4d26a7a3a09cb41a59cc [2025-03-14 01:01:44,586 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-14 01:01:44,587 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-14 01:01:44,588 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-14 01:01:44,588 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-14 01:01:44,591 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-14 01:01:44,592 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.03 01:01:44" (1/1) ... [2025-03-14 01:01:44,592 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e48f2d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:01:44, skipping insertion in model container [2025-03-14 01:01:44,592 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.03 01:01:44" (1/1) ... [2025-03-14 01:01:44,611 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-14 01:01:44,777 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c[6489,6502] [2025-03-14 01:01:44,789 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-14 01:01:44,801 INFO L200 MainTranslator]: Completed pre-run [2025-03-14 01:01:44,841 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c[6489,6502] [2025-03-14 01:01:44,847 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-14 01:01:44,861 INFO L204 MainTranslator]: Completed translation [2025-03-14 01:01:44,863 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:01:44 WrapperNode [2025-03-14 01:01:44,863 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-14 01:01:44,864 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-14 01:01:44,865 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-14 01:01:44,865 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-14 01:01:44,869 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:01:44" (1/1) ... [2025-03-14 01:01:44,881 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:01:44" (1/1) ... [2025-03-14 01:01:44,917 INFO L138 Inliner]: procedures = 25, calls = 61, calls flagged for inlining = 28, calls inlined = 42, statements flattened = 591 [2025-03-14 01:01:44,917 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-14 01:01:44,918 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-14 01:01:44,918 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-14 01:01:44,918 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-14 01:01:44,927 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:01:44" (1/1) ... [2025-03-14 01:01:44,927 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:01:44" (1/1) ... [2025-03-14 01:01:44,935 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:01:44" (1/1) ... [2025-03-14 01:01:44,960 INFO L175 MemorySlicer]: Split 29 memory accesses to 2 slices as follows [2, 27]. 93 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2025-03-14 01:01:44,960 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:01:44" (1/1) ... [2025-03-14 01:01:44,961 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:01:44" (1/1) ... [2025-03-14 01:01:44,973 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:01:44" (1/1) ... [2025-03-14 01:01:44,974 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:01:44" (1/1) ... [2025-03-14 01:01:44,975 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:01:44" (1/1) ... [2025-03-14 01:01:44,976 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:01:44" (1/1) ... [2025-03-14 01:01:44,979 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-14 01:01:44,985 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-14 01:01:44,985 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-14 01:01:44,985 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-14 01:01:44,985 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:01:44" (1/1) ... [2025-03-14 01:01:44,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-14 01:01:45,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:01:45,014 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) [2025-03-14 01:01:45,019 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 [2025-03-14 01:01:45,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-14 01:01:45,038 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-14 01:01:45,038 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-14 01:01:45,038 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-14 01:01:45,039 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-14 01:01:45,039 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-14 01:01:45,039 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-14 01:01:45,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-14 01:01:45,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-14 01:01:45,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-14 01:01:45,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-14 01:01:45,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-14 01:01:45,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-14 01:01:45,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-14 01:01:45,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-14 01:01:45,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-14 01:01:45,041 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-14 01:01:45,151 INFO L256 CfgBuilder]: Building ICFG [2025-03-14 01:01:45,153 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-14 01:01:45,806 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-14 01:01:45,806 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-14 01:01:45,807 INFO L318 CfgBuilder]: Performing block encoding [2025-03-14 01:01:46,502 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-14 01:01:46,503 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.03 01:01:46 BoogieIcfgContainer [2025-03-14 01:01:46,504 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-14 01:01:46,505 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-14 01:01:46,506 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-14 01:01:46,509 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-14 01:01:46,510 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.03 01:01:44" (1/3) ... [2025-03-14 01:01:46,510 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6830fec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.03 01:01:46, skipping insertion in model container [2025-03-14 01:01:46,510 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:01:44" (2/3) ... [2025-03-14 01:01:46,511 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6830fec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.03 01:01:46, skipping insertion in model container [2025-03-14 01:01:46,511 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.03 01:01:46" (3/3) ... [2025-03-14 01:01:46,512 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-trans.wvr.c [2025-03-14 01:01:46,523 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-14 01:01:46,525 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-nzb-file-trans.wvr.c that has 4 procedures, 38 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2025-03-14 01:01:46,525 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-14 01:01:46,651 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-14 01:01:46,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 49 transitions, 119 flow [2025-03-14 01:01:46,713 INFO L124 PetriNetUnfolderBase]: 12/46 cut-off events. [2025-03-14 01:01:46,716 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-14 01:01:46,720 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 74 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2025-03-14 01:01:46,722 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 49 transitions, 119 flow [2025-03-14 01:01:46,724 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 45 transitions, 108 flow [2025-03-14 01:01:46,733 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 01:01:46,741 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;@77756a7f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 01:01:46,741 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-03-14 01:01:46,758 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 01:01:46,759 INFO L124 PetriNetUnfolderBase]: 12/44 cut-off events. [2025-03-14 01:01:46,759 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-14 01:01:46,759 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:01:46,760 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] [2025-03-14 01:01:46,760 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)] === [2025-03-14 01:01:46,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:01:46,764 INFO L85 PathProgramCache]: Analyzing trace with hash 654225432, now seen corresponding path program 1 times [2025-03-14 01:01:46,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:01:46,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790939184] [2025-03-14 01:01:46,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:01:46,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:01:46,837 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-14 01:01:46,867 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-14 01:01:46,867 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:01:46,868 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:01:47,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:01:47,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:01:47,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790939184] [2025-03-14 01:01:47,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790939184] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:01:47,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:01:47,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-14 01:01:47,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165686158] [2025-03-14 01:01:47,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:01:47,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 01:01:47,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:01:47,219 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 01:01:47,220 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 01:01:47,220 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-14 01:01:47,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:01:47,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:01:47,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-14 01:01:47,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:01:47,911 INFO L124 PetriNetUnfolderBase]: 2373/3237 cut-off events. [2025-03-14 01:01:47,912 INFO L125 PetriNetUnfolderBase]: For 185/185 co-relation queries the response was YES. [2025-03-14 01:01:47,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6649 conditions, 3237 events. 2373/3237 cut-off events. For 185/185 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 12259 event pairs, 1692 based on Foata normal form. 0/2556 useless extension candidates. Maximal degree in co-relation 6206. Up to 3234 conditions per place. [2025-03-14 01:01:47,936 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 38 selfloop transitions, 6 changer transitions 0/45 dead transitions. [2025-03-14 01:01:47,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 45 transitions, 196 flow [2025-03-14 01:01:47,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 01:01:47,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 01:01:47,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2025-03-14 01:01:47,947 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4217687074829932 [2025-03-14 01:01:47,949 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 108 flow. Second operand 3 states and 62 transitions. [2025-03-14 01:01:47,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 45 transitions, 196 flow [2025-03-14 01:01:47,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 45 transitions, 184 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-03-14 01:01:47,958 INFO L231 Difference]: Finished difference. Result has 40 places, 45 transitions, 122 flow [2025-03-14 01:01:47,960 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=40, PETRI_TRANSITIONS=45} [2025-03-14 01:01:47,962 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2025-03-14 01:01:47,962 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 45 transitions, 122 flow [2025-03-14 01:01:47,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:01:47,963 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:01:47,963 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] [2025-03-14 01:01:47,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-14 01:01:47,963 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)] === [2025-03-14 01:01:47,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:01:47,964 INFO L85 PathProgramCache]: Analyzing trace with hash 671603589, now seen corresponding path program 1 times [2025-03-14 01:01:47,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:01:47,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300658948] [2025-03-14 01:01:47,964 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:01:47,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:01:47,985 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-14 01:01:48,004 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-14 01:01:48,004 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:01:48,004 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:01:48,162 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:01:48,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:01:48,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300658948] [2025-03-14 01:01:48,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300658948] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:01:48,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626563561] [2025-03-14 01:01:48,163 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:01:48,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:01:48,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:01:48,165 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) [2025-03-14 01:01:48,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-14 01:01:48,308 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-14 01:01:48,346 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-14 01:01:48,346 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:01:48,346 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:01:48,349 INFO L256 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-14 01:01:48,354 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:01:48,390 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:01:48,391 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:01:48,415 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 01:01:48,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626563561] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:01:48,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:01:48,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2025-03-14 01:01:48,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774341448] [2025-03-14 01:01:48,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:01:48,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-14 01:01:48,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:01:48,418 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-14 01:01:48,419 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2025-03-14 01:01:48,419 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-14 01:01:48,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 45 transitions, 122 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:01:48,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:01:48,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-14 01:01:48,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:01:48,871 INFO L124 PetriNetUnfolderBase]: 2373/3246 cut-off events. [2025-03-14 01:01:48,871 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2025-03-14 01:01:48,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6574 conditions, 3246 events. 2373/3246 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 12273 event pairs, 1692 based on Foata normal form. 6/2573 useless extension candidates. Maximal degree in co-relation 6525. Up to 3234 conditions per place. [2025-03-14 01:01:48,884 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 38 selfloop transitions, 15 changer transitions 0/54 dead transitions. [2025-03-14 01:01:48,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 54 transitions, 264 flow [2025-03-14 01:01:48,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-14 01:01:48,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-14 01:01:48,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2025-03-14 01:01:48,886 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2925170068027211 [2025-03-14 01:01:48,886 INFO L175 Difference]: Start difference. First operand has 40 places, 45 transitions, 122 flow. Second operand 6 states and 86 transitions. [2025-03-14 01:01:48,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 54 transitions, 264 flow [2025-03-14 01:01:48,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 54 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-14 01:01:48,888 INFO L231 Difference]: Finished difference. Result has 47 places, 54 transitions, 212 flow [2025-03-14 01:01:48,888 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=212, PETRI_PLACES=47, PETRI_TRANSITIONS=54} [2025-03-14 01:01:48,888 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2025-03-14 01:01:48,888 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 54 transitions, 212 flow [2025-03-14 01:01:48,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:01:48,888 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:01:48,889 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:01:48,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-14 01:01:49,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:01:49,093 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)] === [2025-03-14 01:01:49,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:01:49,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1245307706, now seen corresponding path program 2 times [2025-03-14 01:01:49,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:01:49,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977314199] [2025-03-14 01:01:49,094 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:01:49,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:01:49,120 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 36 statements into 2 equivalence classes. [2025-03-14 01:01:49,145 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 24 of 36 statements. [2025-03-14 01:01:49,146 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-14 01:01:49,146 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:01:49,720 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-14 01:01:49,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:01:49,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977314199] [2025-03-14 01:01:49,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977314199] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:01:49,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:01:49,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-14 01:01:49,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623257171] [2025-03-14 01:01:49,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:01:49,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 01:01:49,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:01:49,723 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 01:01:49,723 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-14 01:01:49,723 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-14 01:01:49,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 54 transitions, 212 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:01:49,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:01:49,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-14 01:01:49,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:01:50,584 INFO L124 PetriNetUnfolderBase]: 3867/5443 cut-off events. [2025-03-14 01:01:50,584 INFO L125 PetriNetUnfolderBase]: For 119/119 co-relation queries the response was YES. [2025-03-14 01:01:50,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11022 conditions, 5443 events. 3867/5443 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 25073 event pairs, 1692 based on Foata normal form. 1/4412 useless extension candidates. Maximal degree in co-relation 10934. Up to 3132 conditions per place. [2025-03-14 01:01:50,613 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 107 selfloop transitions, 13 changer transitions 1/122 dead transitions. [2025-03-14 01:01:50,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 122 transitions, 602 flow [2025-03-14 01:01:50,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-14 01:01:50,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-14 01:01:50,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2025-03-14 01:01:50,615 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2025-03-14 01:01:50,615 INFO L175 Difference]: Start difference. First operand has 47 places, 54 transitions, 212 flow. Second operand 5 states and 130 transitions. [2025-03-14 01:01:50,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 122 transitions, 602 flow [2025-03-14 01:01:50,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 122 transitions, 578 flow, removed 9 selfloop flow, removed 1 redundant places. [2025-03-14 01:01:50,620 INFO L231 Difference]: Finished difference. Result has 53 places, 66 transitions, 287 flow [2025-03-14 01:01:50,621 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=287, PETRI_PLACES=53, PETRI_TRANSITIONS=66} [2025-03-14 01:01:50,622 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 10 predicate places. [2025-03-14 01:01:50,622 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 66 transitions, 287 flow [2025-03-14 01:01:50,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:01:50,622 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:01:50,622 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:01:50,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-14 01:01:50,623 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)] === [2025-03-14 01:01:50,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:01:50,623 INFO L85 PathProgramCache]: Analyzing trace with hash 407664732, now seen corresponding path program 3 times [2025-03-14 01:01:50,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:01:50,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476867365] [2025-03-14 01:01:50,624 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 01:01:50,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:01:50,644 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 36 statements into 3 equivalence classes. [2025-03-14 01:01:50,665 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 24 of 36 statements. [2025-03-14 01:01:50,667 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-14 01:01:50,668 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:01:51,169 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-14 01:01:51,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:01:51,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476867365] [2025-03-14 01:01:51,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476867365] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:01:51,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:01:51,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-14 01:01:51,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521436485] [2025-03-14 01:01:51,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:01:51,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 01:01:51,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:01:51,171 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 01:01:51,172 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-14 01:01:51,172 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-14 01:01:51,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 66 transitions, 287 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:01:51,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:01:51,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-14 01:01:51,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:01:52,915 INFO L124 PetriNetUnfolderBase]: 9364/13163 cut-off events. [2025-03-14 01:01:52,916 INFO L125 PetriNetUnfolderBase]: For 5697/5697 co-relation queries the response was YES. [2025-03-14 01:01:52,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32201 conditions, 13163 events. 9364/13163 cut-off events. For 5697/5697 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 70197 event pairs, 1562 based on Foata normal form. 1/12700 useless extension candidates. Maximal degree in co-relation 32121. Up to 4067 conditions per place. [2025-03-14 01:01:52,972 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 136 selfloop transitions, 43 changer transitions 1/181 dead transitions. [2025-03-14 01:01:52,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 181 transitions, 1011 flow [2025-03-14 01:01:52,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-14 01:01:52,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-14 01:01:52,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 176 transitions. [2025-03-14 01:01:52,974 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5986394557823129 [2025-03-14 01:01:52,974 INFO L175 Difference]: Start difference. First operand has 53 places, 66 transitions, 287 flow. Second operand 6 states and 176 transitions. [2025-03-14 01:01:52,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 181 transitions, 1011 flow [2025-03-14 01:01:52,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 181 transitions, 1011 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-14 01:01:52,990 INFO L231 Difference]: Finished difference. Result has 63 places, 101 transitions, 664 flow [2025-03-14 01:01:52,991 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=664, PETRI_PLACES=63, PETRI_TRANSITIONS=101} [2025-03-14 01:01:52,991 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 20 predicate places. [2025-03-14 01:01:52,992 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 101 transitions, 664 flow [2025-03-14 01:01:52,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:01:52,992 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:01:52,992 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:01:52,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-14 01:01:52,993 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)] === [2025-03-14 01:01:52,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:01:52,993 INFO L85 PathProgramCache]: Analyzing trace with hash 382692966, now seen corresponding path program 4 times [2025-03-14 01:01:52,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:01:52,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841743955] [2025-03-14 01:01:52,994 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-14 01:01:52,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:01:53,014 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 36 statements into 2 equivalence classes. [2025-03-14 01:01:53,033 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-03-14 01:01:53,036 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-14 01:01:53,036 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:01:53,158 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-03-14 01:01:53,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:01:53,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841743955] [2025-03-14 01:01:53,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841743955] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:01:53,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218784411] [2025-03-14 01:01:53,159 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-14 01:01:53,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:01:53,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:01:53,162 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) [2025-03-14 01:01:53,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-14 01:01:53,293 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 36 statements into 2 equivalence classes. [2025-03-14 01:01:53,332 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-03-14 01:01:53,332 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-14 01:01:53,332 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:01:53,334 INFO L256 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-14 01:01:53,337 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:01:53,384 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-03-14 01:01:53,384 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:01:53,421 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-03-14 01:01:53,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218784411] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:01:53,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:01:53,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2025-03-14 01:01:53,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518465026] [2025-03-14 01:01:53,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:01:53,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-14 01:01:53,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:01:53,424 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-14 01:01:53,424 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2025-03-14 01:01:53,424 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-14 01:01:53,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 101 transitions, 664 flow. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 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) [2025-03-14 01:01:53,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:01:53,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-14 01:01:53,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:01:55,129 INFO L124 PetriNetUnfolderBase]: 9364/13166 cut-off events. [2025-03-14 01:01:55,130 INFO L125 PetriNetUnfolderBase]: For 20754/20754 co-relation queries the response was YES. [2025-03-14 01:01:55,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39169 conditions, 13166 events. 9364/13166 cut-off events. For 20754/20754 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 69679 event pairs, 6354 based on Foata normal form. 1/12743 useless extension candidates. Maximal degree in co-relation 39072. Up to 13144 conditions per place. [2025-03-14 01:01:55,197 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 85 selfloop transitions, 18 changer transitions 0/104 dead transitions. [2025-03-14 01:01:55,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 104 transitions, 888 flow [2025-03-14 01:01:55,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-14 01:01:55,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-14 01:01:55,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2025-03-14 01:01:55,201 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2536443148688047 [2025-03-14 01:01:55,201 INFO L175 Difference]: Start difference. First operand has 63 places, 101 transitions, 664 flow. Second operand 7 states and 87 transitions. [2025-03-14 01:01:55,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 104 transitions, 888 flow [2025-03-14 01:01:55,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 104 transitions, 868 flow, removed 10 selfloop flow, removed 0 redundant places. [2025-03-14 01:01:55,239 INFO L231 Difference]: Finished difference. Result has 70 places, 104 transitions, 712 flow [2025-03-14 01:01:55,239 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=712, PETRI_PLACES=70, PETRI_TRANSITIONS=104} [2025-03-14 01:01:55,239 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 27 predicate places. [2025-03-14 01:01:55,239 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 104 transitions, 712 flow [2025-03-14 01:01:55,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 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) [2025-03-14 01:01:55,240 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:01:55,240 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:01:55,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-14 01:01:55,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:01:55,446 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)] === [2025-03-14 01:01:55,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:01:55,447 INFO L85 PathProgramCache]: Analyzing trace with hash 292873019, now seen corresponding path program 5 times [2025-03-14 01:01:55,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:01:55,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595573585] [2025-03-14 01:01:55,447 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:01:55,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:01:55,474 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 39 statements into 4 equivalence classes. [2025-03-14 01:01:55,513 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 39 of 39 statements. [2025-03-14 01:01:55,513 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-03-14 01:01:55,513 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:01:55,984 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-14 01:01:55,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:01:55,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595573585] [2025-03-14 01:01:55,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595573585] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:01:55,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:01:55,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-14 01:01:55,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986660413] [2025-03-14 01:01:55,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:01:55,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 01:01:55,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:01:55,986 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 01:01:55,986 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-14 01:01:55,986 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-14 01:01:55,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 104 transitions, 712 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:01:55,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:01:55,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-14 01:01:55,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:01:58,402 INFO L124 PetriNetUnfolderBase]: 11624/16479 cut-off events. [2025-03-14 01:01:58,403 INFO L125 PetriNetUnfolderBase]: For 22083/22083 co-relation queries the response was YES. [2025-03-14 01:01:58,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47361 conditions, 16479 events. 11624/16479 cut-off events. For 22083/22083 co-relation queries the response was YES. Maximal size of possible extension queue 607. Compared 90275 event pairs, 3505 based on Foata normal form. 1/15956 useless extension candidates. Maximal degree in co-relation 47243. Up to 6638 conditions per place. [2025-03-14 01:01:58,504 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 142 selfloop transitions, 53 changer transitions 1/197 dead transitions. [2025-03-14 01:01:58,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 197 transitions, 1537 flow [2025-03-14 01:01:58,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-14 01:01:58,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-14 01:01:58,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 144 transitions. [2025-03-14 01:01:58,507 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5877551020408164 [2025-03-14 01:01:58,507 INFO L175 Difference]: Start difference. First operand has 70 places, 104 transitions, 712 flow. Second operand 5 states and 144 transitions. [2025-03-14 01:01:58,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 197 transitions, 1537 flow [2025-03-14 01:01:58,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 197 transitions, 1501 flow, removed 6 selfloop flow, removed 4 redundant places. [2025-03-14 01:01:58,560 INFO L231 Difference]: Finished difference. Result has 74 places, 136 transitions, 1200 flow [2025-03-14 01:01:58,560 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=676, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1200, PETRI_PLACES=74, PETRI_TRANSITIONS=136} [2025-03-14 01:01:58,561 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 31 predicate places. [2025-03-14 01:01:58,561 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 136 transitions, 1200 flow [2025-03-14 01:01:58,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:01:58,561 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:01:58,561 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:01:58,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-14 01:01:58,563 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)] === [2025-03-14 01:01:58,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:01:58,564 INFO L85 PathProgramCache]: Analyzing trace with hash 192323227, now seen corresponding path program 6 times [2025-03-14 01:01:58,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:01:58,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650230310] [2025-03-14 01:01:58,564 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-14 01:01:58,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:01:58,582 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 39 statements into 4 equivalence classes. [2025-03-14 01:01:58,594 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 24 of 39 statements. [2025-03-14 01:01:58,594 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-14 01:01:58,594 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:01:58,891 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-14 01:01:58,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:01:58,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650230310] [2025-03-14 01:01:58,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650230310] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:01:58,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:01:58,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-14 01:01:58,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031009229] [2025-03-14 01:01:58,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:01:58,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 01:01:58,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:01:58,893 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 01:01:58,893 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-14 01:01:58,893 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-14 01:01:58,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 136 transitions, 1200 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:01:58,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:01:58,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-14 01:01:58,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:02:00,988 INFO L124 PetriNetUnfolderBase]: 14572/20588 cut-off events. [2025-03-14 01:02:00,989 INFO L125 PetriNetUnfolderBase]: For 55255/55255 co-relation queries the response was YES. [2025-03-14 01:02:01,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66364 conditions, 20588 events. 14572/20588 cut-off events. For 55255/55255 co-relation queries the response was YES. Maximal size of possible extension queue 798. Compared 117455 event pairs, 3895 based on Foata normal form. 1/19877 useless extension candidates. Maximal degree in co-relation 66260. Up to 7886 conditions per place. [2025-03-14 01:02:01,104 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 146 selfloop transitions, 71 changer transitions 4/222 dead transitions. [2025-03-14 01:02:01,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 222 transitions, 2111 flow [2025-03-14 01:02:01,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-14 01:02:01,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-14 01:02:01,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 142 transitions. [2025-03-14 01:02:01,105 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5795918367346938 [2025-03-14 01:02:01,106 INFO L175 Difference]: Start difference. First operand has 74 places, 136 transitions, 1200 flow. Second operand 5 states and 142 transitions. [2025-03-14 01:02:01,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 222 transitions, 2111 flow [2025-03-14 01:02:01,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 222 transitions, 2099 flow, removed 6 selfloop flow, removed 0 redundant places. [2025-03-14 01:02:01,230 INFO L231 Difference]: Finished difference. Result has 81 places, 163 transitions, 1728 flow [2025-03-14 01:02:01,230 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1188, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1728, PETRI_PLACES=81, PETRI_TRANSITIONS=163} [2025-03-14 01:02:01,230 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 38 predicate places. [2025-03-14 01:02:01,231 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 163 transitions, 1728 flow [2025-03-14 01:02:01,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:01,231 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:02:01,231 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:02:01,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-14 01:02:01,231 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)] === [2025-03-14 01:02:01,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:02:01,232 INFO L85 PathProgramCache]: Analyzing trace with hash -168228379, now seen corresponding path program 7 times [2025-03-14 01:02:01,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:02:01,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210836838] [2025-03-14 01:02:01,232 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-14 01:02:01,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:02:01,246 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-14 01:02:01,264 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-14 01:02:01,264 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:02:01,264 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:01,787 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-14 01:02:01,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:02:01,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210836838] [2025-03-14 01:02:01,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210836838] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:02:01,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:02:01,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-14 01:02:01,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012854510] [2025-03-14 01:02:01,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:02:01,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 01:02:01,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:02:01,788 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 01:02:01,788 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-14 01:02:01,788 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-14 01:02:01,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 163 transitions, 1728 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:01,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:02:01,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-14 01:02:01,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:02:05,511 INFO L124 PetriNetUnfolderBase]: 22021/30973 cut-off events. [2025-03-14 01:02:05,511 INFO L125 PetriNetUnfolderBase]: For 104495/104495 co-relation queries the response was YES. [2025-03-14 01:02:05,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108519 conditions, 30973 events. 22021/30973 cut-off events. For 104495/104495 co-relation queries the response was YES. Maximal size of possible extension queue 1140. Compared 184800 event pairs, 6591 based on Foata normal form. 1/30974 useless extension candidates. Maximal degree in co-relation 108411. Up to 13191 conditions per place. [2025-03-14 01:02:05,800 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 228 selfloop transitions, 68 changer transitions 2/299 dead transitions. [2025-03-14 01:02:05,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 299 transitions, 3319 flow [2025-03-14 01:02:05,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-14 01:02:05,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-14 01:02:05,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 148 transitions. [2025-03-14 01:02:05,802 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6040816326530613 [2025-03-14 01:02:05,802 INFO L175 Difference]: Start difference. First operand has 81 places, 163 transitions, 1728 flow. Second operand 5 states and 148 transitions. [2025-03-14 01:02:05,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 299 transitions, 3319 flow [2025-03-14 01:02:06,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 299 transitions, 3217 flow, removed 11 selfloop flow, removed 2 redundant places. [2025-03-14 01:02:06,102 INFO L231 Difference]: Finished difference. Result has 87 places, 212 transitions, 2481 flow [2025-03-14 01:02:06,102 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1655, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2481, PETRI_PLACES=87, PETRI_TRANSITIONS=212} [2025-03-14 01:02:06,102 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 44 predicate places. [2025-03-14 01:02:06,103 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 212 transitions, 2481 flow [2025-03-14 01:02:06,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:06,103 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:02:06,103 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:02:06,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-14 01:02:06,103 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)] === [2025-03-14 01:02:06,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:02:06,104 INFO L85 PathProgramCache]: Analyzing trace with hash -520239365, now seen corresponding path program 8 times [2025-03-14 01:02:06,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:02:06,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297399534] [2025-03-14 01:02:06,104 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:02:06,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:02:06,129 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 39 statements into 2 equivalence classes. [2025-03-14 01:02:06,142 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 24 of 39 statements. [2025-03-14 01:02:06,142 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-14 01:02:06,143 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:06,525 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-14 01:02:06,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:02:06,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297399534] [2025-03-14 01:02:06,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297399534] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:02:06,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:02:06,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-14 01:02:06,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517210785] [2025-03-14 01:02:06,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:02:06,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 01:02:06,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:02:06,528 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 01:02:06,528 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-14 01:02:06,528 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-14 01:02:06,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 212 transitions, 2481 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:06,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:02:06,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-14 01:02:06,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:02:11,503 INFO L124 PetriNetUnfolderBase]: 22784/32101 cut-off events. [2025-03-14 01:02:11,504 INFO L125 PetriNetUnfolderBase]: For 145007/145007 co-relation queries the response was YES. [2025-03-14 01:02:11,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120915 conditions, 32101 events. 22784/32101 cut-off events. For 145007/145007 co-relation queries the response was YES. Maximal size of possible extension queue 1207. Compared 193805 event pairs, 4886 based on Foata normal form. 1/32102 useless extension candidates. Maximal degree in co-relation 120805. Up to 11459 conditions per place. [2025-03-14 01:02:12,040 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 229 selfloop transitions, 109 changer transitions 2/341 dead transitions. [2025-03-14 01:02:12,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 341 transitions, 3998 flow [2025-03-14 01:02:12,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-14 01:02:12,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-14 01:02:12,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 180 transitions. [2025-03-14 01:02:12,041 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6122448979591837 [2025-03-14 01:02:12,041 INFO L175 Difference]: Start difference. First operand has 87 places, 212 transitions, 2481 flow. Second operand 6 states and 180 transitions. [2025-03-14 01:02:12,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 341 transitions, 3998 flow [2025-03-14 01:02:12,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 341 transitions, 3858 flow, removed 70 selfloop flow, removed 0 redundant places. [2025-03-14 01:02:12,533 INFO L231 Difference]: Finished difference. Result has 96 places, 243 transitions, 3182 flow [2025-03-14 01:02:12,533 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2387, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3182, PETRI_PLACES=96, PETRI_TRANSITIONS=243} [2025-03-14 01:02:12,534 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 53 predicate places. [2025-03-14 01:02:12,534 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 243 transitions, 3182 flow [2025-03-14 01:02:12,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:12,534 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:02:12,534 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:02:12,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-14 01:02:12,535 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)] === [2025-03-14 01:02:12,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:02:12,535 INFO L85 PathProgramCache]: Analyzing trace with hash 517265682, now seen corresponding path program 1 times [2025-03-14 01:02:12,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:02:12,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182308784] [2025-03-14 01:02:12,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:02:12,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:02:12,557 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-03-14 01:02:12,573 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-03-14 01:02:12,573 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:02:12,573 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:12,731 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-14 01:02:12,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:02:12,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182308784] [2025-03-14 01:02:12,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182308784] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:02:12,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:02:12,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-14 01:02:12,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426395920] [2025-03-14 01:02:12,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:02:12,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-14 01:02:12,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:02:12,734 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-14 01:02:12,734 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-14 01:02:12,734 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-14 01:02:12,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 243 transitions, 3182 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:12,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:02:12,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-14 01:02:12,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:02:18,703 INFO L124 PetriNetUnfolderBase]: 23872/33710 cut-off events. [2025-03-14 01:02:18,704 INFO L125 PetriNetUnfolderBase]: For 180645/180645 co-relation queries the response was YES. [2025-03-14 01:02:18,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129318 conditions, 33710 events. 23872/33710 cut-off events. For 180645/180645 co-relation queries the response was YES. Maximal size of possible extension queue 1287. Compared 205889 event pairs, 8215 based on Foata normal form. 4/33714 useless extension candidates. Maximal degree in co-relation 129204. Up to 27191 conditions per place. [2025-03-14 01:02:19,050 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 234 selfloop transitions, 20 changer transitions 55/310 dead transitions. [2025-03-14 01:02:19,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 310 transitions, 4386 flow [2025-03-14 01:02:19,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-14 01:02:19,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-14 01:02:19,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2025-03-14 01:02:19,052 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5153061224489796 [2025-03-14 01:02:19,052 INFO L175 Difference]: Start difference. First operand has 96 places, 243 transitions, 3182 flow. Second operand 4 states and 101 transitions. [2025-03-14 01:02:19,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 310 transitions, 4386 flow [2025-03-14 01:02:19,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 310 transitions, 4334 flow, removed 26 selfloop flow, removed 0 redundant places. [2025-03-14 01:02:19,909 INFO L231 Difference]: Finished difference. Result has 102 places, 226 transitions, 2996 flow [2025-03-14 01:02:19,909 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3146, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2996, PETRI_PLACES=102, PETRI_TRANSITIONS=226} [2025-03-14 01:02:19,910 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 59 predicate places. [2025-03-14 01:02:19,910 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 226 transitions, 2996 flow [2025-03-14 01:02:19,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:19,910 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:02:19,910 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:02:19,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-14 01:02:19,911 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)] === [2025-03-14 01:02:19,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:02:19,911 INFO L85 PathProgramCache]: Analyzing trace with hash -27483939, now seen corresponding path program 1 times [2025-03-14 01:02:19,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:02:19,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278142550] [2025-03-14 01:02:19,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:02:19,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:02:19,928 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-03-14 01:02:19,941 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-03-14 01:02:19,942 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:02:19,942 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:20,059 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-14 01:02:20,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:02:20,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278142550] [2025-03-14 01:02:20,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278142550] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:02:20,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:02:20,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-14 01:02:20,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736433996] [2025-03-14 01:02:20,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:02:20,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-14 01:02:20,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:02:20,061 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-14 01:02:20,061 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-14 01:02:20,061 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-14 01:02:20,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 226 transitions, 2996 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:20,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:02:20,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-14 01:02:20,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:02:24,317 INFO L124 PetriNetUnfolderBase]: 22421/31778 cut-off events. [2025-03-14 01:02:24,318 INFO L125 PetriNetUnfolderBase]: For 166238/166238 co-relation queries the response was YES. [2025-03-14 01:02:24,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120783 conditions, 31778 events. 22421/31778 cut-off events. For 166238/166238 co-relation queries the response was YES. Maximal size of possible extension queue 1208. Compared 194328 event pairs, 7652 based on Foata normal form. 4/31782 useless extension candidates. Maximal degree in co-relation 120666. Up to 26691 conditions per place. [2025-03-14 01:02:24,688 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 218 selfloop transitions, 18 changer transitions 53/290 dead transitions. [2025-03-14 01:02:24,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 290 transitions, 4131 flow [2025-03-14 01:02:24,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-14 01:02:24,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-14 01:02:24,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2025-03-14 01:02:24,689 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5255102040816326 [2025-03-14 01:02:24,689 INFO L175 Difference]: Start difference. First operand has 102 places, 226 transitions, 2996 flow. Second operand 4 states and 103 transitions. [2025-03-14 01:02:24,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 290 transitions, 4131 flow [2025-03-14 01:02:25,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 290 transitions, 4015 flow, removed 11 selfloop flow, removed 4 redundant places. [2025-03-14 01:02:25,496 INFO L231 Difference]: Finished difference. Result has 103 places, 211 transitions, 2788 flow [2025-03-14 01:02:25,497 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2900, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2788, PETRI_PLACES=103, PETRI_TRANSITIONS=211} [2025-03-14 01:02:25,498 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 60 predicate places. [2025-03-14 01:02:25,498 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 211 transitions, 2788 flow [2025-03-14 01:02:25,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:25,498 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:02:25,498 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:02:25,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-14 01:02:25,499 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)] === [2025-03-14 01:02:25,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:02:25,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1287772162, now seen corresponding path program 1 times [2025-03-14 01:02:25,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:02:25,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186784722] [2025-03-14 01:02:25,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:02:25,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:02:25,515 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-03-14 01:02:25,523 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-03-14 01:02:25,523 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:02:25,523 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:02:26,004 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-14 01:02:26,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:02:26,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186784722] [2025-03-14 01:02:26,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186784722] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:02:26,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:02:26,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-14 01:02:26,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944047523] [2025-03-14 01:02:26,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:02:26,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 01:02:26,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:02:26,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 01:02:26,005 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-14 01:02:26,005 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 49 [2025-03-14 01:02:26,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 211 transitions, 2788 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:02:26,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:02:26,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 49 [2025-03-14 01:02:26,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand