./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/unroll-cond-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/unroll-cond-2.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 4f5c6e2b4939ff0e3b5a44ab7f8c3e5d18f7e9fd12beb8fad487ea501e8fa48b --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 04:44:54,212 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 04:44:54,258 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 04:44:54,261 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 04:44:54,261 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 04:44:54,274 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 04:44:54,274 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 04:44:54,274 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 04:44:54,274 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 04:44:54,274 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 04:44:54,274 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 04:44:54,274 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 04:44:54,275 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 04:44:54,275 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 04:44:54,275 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 04:44:54,275 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 04:44:54,275 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 04:44:54,275 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 04:44:54,275 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 04:44:54,275 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 04:44:54,275 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 04:44:54,275 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 04:44:54,275 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 04:44:54,275 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 04:44:54,275 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 04:44:54,275 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 04:44:54,275 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 04:44:54,275 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 04:44:54,275 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 04:44:54,276 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 04:44:54,276 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 04:44:54,276 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 04:44:54,276 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:44:54,276 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 04:44:54,276 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 04:44:54,276 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 04:44:54,276 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 04:44:54,276 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 04:44:54,276 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 04:44:54,276 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 04:44:54,276 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 04:44:54,276 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 04:44:54,276 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 04:44:54,276 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-jdk21/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 -> 4f5c6e2b4939ff0e3b5a44ab7f8c3e5d18f7e9fd12beb8fad487ea501e8fa48b [2025-02-06 04:44:54,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 04:44:54,503 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 04:44:54,505 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 04:44:54,505 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 04:44:54,505 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 04:44:54,506 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/unroll-cond-2.wvr.c [2025-02-06 04:44:55,650 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/23b4675a9/1a0d974e228e421291e0a4d4bddfe03a/FLAG9916f44fd [2025-02-06 04:44:55,914 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 04:44:55,916 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-2.wvr.c [2025-02-06 04:44:55,923 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/23b4675a9/1a0d974e228e421291e0a4d4bddfe03a/FLAG9916f44fd [2025-02-06 04:44:55,940 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/23b4675a9/1a0d974e228e421291e0a4d4bddfe03a [2025-02-06 04:44:55,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 04:44:55,943 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 04:44:55,945 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 04:44:55,946 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 04:44:55,949 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 04:44:55,950 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:44:55" (1/1) ... [2025-02-06 04:44:55,952 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b3cf14f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:44:55, skipping insertion in model container [2025-02-06 04:44:55,952 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:44:55" (1/1) ... [2025-02-06 04:44:55,964 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 04:44:56,087 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-2.wvr.c[2500,2513] [2025-02-06 04:44:56,094 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:44:56,102 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 04:44:56,121 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-2.wvr.c[2500,2513] [2025-02-06 04:44:56,123 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:44:56,131 INFO L204 MainTranslator]: Completed translation [2025-02-06 04:44:56,132 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:44:56 WrapperNode [2025-02-06 04:44:56,132 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 04:44:56,133 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 04:44:56,133 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 04:44:56,133 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 04:44:56,137 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:44:56" (1/1) ... [2025-02-06 04:44:56,142 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:44:56" (1/1) ... [2025-02-06 04:44:56,159 INFO L138 Inliner]: procedures = 23, calls = 23, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 125 [2025-02-06 04:44:56,159 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 04:44:56,160 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 04:44:56,160 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 04:44:56,160 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 04:44:56,166 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:44:56" (1/1) ... [2025-02-06 04:44:56,166 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:44:56" (1/1) ... [2025-02-06 04:44:56,167 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:44:56" (1/1) ... [2025-02-06 04:44:56,183 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-02-06 04:44:56,183 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:44:56" (1/1) ... [2025-02-06 04:44:56,183 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:44:56" (1/1) ... [2025-02-06 04:44:56,188 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:44:56" (1/1) ... [2025-02-06 04:44:56,189 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:44:56" (1/1) ... [2025-02-06 04:44:56,190 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:44:56" (1/1) ... [2025-02-06 04:44:56,190 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:44:56" (1/1) ... [2025-02-06 04:44:56,191 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 04:44:56,196 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 04:44:56,196 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 04:44:56,196 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 04:44:56,196 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:44:56" (1/1) ... [2025-02-06 04:44:56,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:44:56,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:44:56,218 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 04:44:56,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 04:44:56,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 04:44:56,235 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-06 04:44:56,235 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-06 04:44:56,235 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-06 04:44:56,235 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-06 04:44:56,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 04:44:56,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 04:44:56,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 04:44:56,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 04:44:56,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 04:44:56,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 04:44:56,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 04:44:56,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 04:44:56,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 04:44:56,237 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 04:44:56,294 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 04:44:56,295 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 04:44:56,461 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 04:44:56,461 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 04:44:56,682 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 04:44:56,682 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 04:44:56,682 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:44:56 BoogieIcfgContainer [2025-02-06 04:44:56,683 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 04:44:56,684 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 04:44:56,684 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 04:44:56,687 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 04:44:56,687 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 04:44:55" (1/3) ... [2025-02-06 04:44:56,688 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60932ca9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:44:56, skipping insertion in model container [2025-02-06 04:44:56,688 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:44:56" (2/3) ... [2025-02-06 04:44:56,688 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60932ca9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:44:56, skipping insertion in model container [2025-02-06 04:44:56,688 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:44:56" (3/3) ... [2025-02-06 04:44:56,689 INFO L128 eAbstractionObserver]: Analyzing ICFG unroll-cond-2.wvr.c [2025-02-06 04:44:56,699 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 04:44:56,700 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG unroll-cond-2.wvr.c that has 3 procedures, 18 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2025-02-06 04:44:56,700 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 04:44:56,751 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-06 04:44:56,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 24 places, 20 transitions, 54 flow [2025-02-06 04:44:56,797 INFO L124 PetriNetUnfolderBase]: 3/18 cut-off events. [2025-02-06 04:44:56,798 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-06 04:44:56,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 18 events. 3/18 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 10 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2025-02-06 04:44:56,800 INFO L82 GeneralOperation]: Start removeDead. Operand has 24 places, 20 transitions, 54 flow [2025-02-06 04:44:56,802 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 21 places, 17 transitions, 46 flow [2025-02-06 04:44:56,808 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 04:44:56,815 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;@2f086f9d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 04:44:56,817 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-02-06 04:44:56,825 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 04:44:56,828 INFO L124 PetriNetUnfolderBase]: 3/16 cut-off events. [2025-02-06 04:44:56,828 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-06 04:44:56,828 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:56,829 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:56,829 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:56,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:56,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1840295052, now seen corresponding path program 1 times [2025-02-06 04:44:56,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:56,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411168369] [2025-02-06 04:44:56,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:44:56,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:56,917 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 04:44:56,946 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 04:44:56,947 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:44:56,947 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:57,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:57,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:57,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411168369] [2025-02-06 04:44:57,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411168369] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:44:57,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:44:57,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 04:44:57,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730842232] [2025-02-06 04:44:57,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:44:57,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 04:44:57,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:57,176 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 04:44:57,176 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 04:44:57,177 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-06 04:44:57,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 17 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2025-02-06 04:44:57,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:57,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-06 04:44:57,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:57,224 INFO L124 PetriNetUnfolderBase]: 38/71 cut-off events. [2025-02-06 04:44:57,224 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-02-06 04:44:57,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 71 events. 38/71 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 118 event pairs, 22 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 120. Up to 70 conditions per place. [2025-02-06 04:44:57,226 INFO L140 encePairwiseOnDemand]: 17/20 looper letters, 15 selfloop transitions, 2 changer transitions 0/18 dead transitions. [2025-02-06 04:44:57,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 18 transitions, 82 flow [2025-02-06 04:44:57,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 04:44:57,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 04:44:57,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 27 transitions. [2025-02-06 04:44:57,235 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45 [2025-02-06 04:44:57,235 INFO L175 Difference]: Start difference. First operand has 21 places, 17 transitions, 46 flow. Second operand 3 states and 27 transitions. [2025-02-06 04:44:57,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 18 transitions, 82 flow [2025-02-06 04:44:57,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 18 transitions, 74 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-06 04:44:57,241 INFO L231 Difference]: Finished difference. Result has 20 places, 18 transitions, 50 flow [2025-02-06 04:44:57,242 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=20, PETRI_TRANSITIONS=18} [2025-02-06 04:44:57,244 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, -1 predicate places. [2025-02-06 04:44:57,245 INFO L471 AbstractCegarLoop]: Abstraction has has 20 places, 18 transitions, 50 flow [2025-02-06 04:44:57,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2025-02-06 04:44:57,245 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:57,245 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:57,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 04:44:57,245 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:57,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:57,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1349574716, now seen corresponding path program 1 times [2025-02-06 04:44:57,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:57,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252797090] [2025-02-06 04:44:57,246 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:44:57,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:57,258 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 04:44:57,271 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 04:44:57,272 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:44:57,272 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:57,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:44:57,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:57,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252797090] [2025-02-06 04:44:57,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252797090] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:44:57,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:44:57,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 04:44:57,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085000839] [2025-02-06 04:44:57,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:44:57,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 04:44:57,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:57,430 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 04:44:57,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-02-06 04:44:57,430 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-06 04:44:57,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 18 transitions, 50 flow. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 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) [2025-02-06 04:44:57,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:57,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-06 04:44:57,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:57,561 INFO L124 PetriNetUnfolderBase]: 67/123 cut-off events. [2025-02-06 04:44:57,561 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-06 04:44:57,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 123 events. 67/123 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 335 event pairs, 2 based on Foata normal form. 1/95 useless extension candidates. Maximal degree in co-relation 249. Up to 77 conditions per place. [2025-02-06 04:44:57,562 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 30 selfloop transitions, 11 changer transitions 2/44 dead transitions. [2025-02-06 04:44:57,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 44 transitions, 194 flow [2025-02-06 04:44:57,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 04:44:57,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 04:44:57,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 62 transitions. [2025-02-06 04:44:57,564 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2025-02-06 04:44:57,564 INFO L175 Difference]: Start difference. First operand has 20 places, 18 transitions, 50 flow. Second operand 6 states and 62 transitions. [2025-02-06 04:44:57,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 44 transitions, 194 flow [2025-02-06 04:44:57,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 44 transitions, 190 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-02-06 04:44:57,565 INFO L231 Difference]: Finished difference. Result has 27 places, 28 transitions, 114 flow [2025-02-06 04:44:57,565 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=114, PETRI_PLACES=27, PETRI_TRANSITIONS=28} [2025-02-06 04:44:57,566 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 6 predicate places. [2025-02-06 04:44:57,566 INFO L471 AbstractCegarLoop]: Abstraction has has 27 places, 28 transitions, 114 flow [2025-02-06 04:44:57,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 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) [2025-02-06 04:44:57,566 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:57,566 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:57,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 04:44:57,566 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:57,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:57,567 INFO L85 PathProgramCache]: Analyzing trace with hash -493281410, now seen corresponding path program 2 times [2025-02-06 04:44:57,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:57,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011723310] [2025-02-06 04:44:57,567 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:44:57,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:57,574 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-02-06 04:44:57,580 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 14 of 15 statements. [2025-02-06 04:44:57,581 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 04:44:57,581 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:57,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:44:57,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:57,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011723310] [2025-02-06 04:44:57,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011723310] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:44:57,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:44:57,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 04:44:57,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154471742] [2025-02-06 04:44:57,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:44:57,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 04:44:57,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:57,704 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 04:44:57,704 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-02-06 04:44:57,704 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-06 04:44:57,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 28 transitions, 114 flow. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 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) [2025-02-06 04:44:57,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:57,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-06 04:44:57,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:57,813 INFO L124 PetriNetUnfolderBase]: 67/125 cut-off events. [2025-02-06 04:44:57,813 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2025-02-06 04:44:57,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 381 conditions, 125 events. 67/125 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 331 event pairs, 3 based on Foata normal form. 1/104 useless extension candidates. Maximal degree in co-relation 362. Up to 77 conditions per place. [2025-02-06 04:44:57,814 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 29 selfloop transitions, 15 changer transitions 2/47 dead transitions. [2025-02-06 04:44:57,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 47 transitions, 268 flow [2025-02-06 04:44:57,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 04:44:57,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 04:44:57,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 64 transitions. [2025-02-06 04:44:57,818 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2025-02-06 04:44:57,818 INFO L175 Difference]: Start difference. First operand has 27 places, 28 transitions, 114 flow. Second operand 7 states and 64 transitions. [2025-02-06 04:44:57,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 47 transitions, 268 flow [2025-02-06 04:44:57,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 47 transitions, 260 flow, removed 4 selfloop flow, removed 0 redundant places. [2025-02-06 04:44:57,819 INFO L231 Difference]: Finished difference. Result has 35 places, 33 transitions, 173 flow [2025-02-06 04:44:57,819 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=173, PETRI_PLACES=35, PETRI_TRANSITIONS=33} [2025-02-06 04:44:57,820 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 14 predicate places. [2025-02-06 04:44:57,820 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 33 transitions, 173 flow [2025-02-06 04:44:57,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 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) [2025-02-06 04:44:57,820 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:57,820 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:57,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 04:44:57,820 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:57,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:57,822 INFO L85 PathProgramCache]: Analyzing trace with hash -209840974, now seen corresponding path program 3 times [2025-02-06 04:44:57,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:57,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490506282] [2025-02-06 04:44:57,823 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:44:57,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:57,832 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 15 statements into 2 equivalence classes. [2025-02-06 04:44:57,838 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 14 of 15 statements. [2025-02-06 04:44:57,838 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-06 04:44:57,838 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:57,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:44:57,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:57,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490506282] [2025-02-06 04:44:57,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490506282] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:44:57,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:44:57,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 04:44:57,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261252627] [2025-02-06 04:44:57,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:44:57,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 04:44:57,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:57,988 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 04:44:57,988 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-02-06 04:44:57,988 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-06 04:44:57,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 173 flow. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 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) [2025-02-06 04:44:57,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:57,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-06 04:44:57,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:58,138 INFO L124 PetriNetUnfolderBase]: 83/158 cut-off events. [2025-02-06 04:44:58,138 INFO L125 PetriNetUnfolderBase]: For 107/107 co-relation queries the response was YES. [2025-02-06 04:44:58,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 543 conditions, 158 events. 83/158 cut-off events. For 107/107 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 450 event pairs, 6 based on Foata normal form. 1/130 useless extension candidates. Maximal degree in co-relation 520. Up to 58 conditions per place. [2025-02-06 04:44:58,142 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 35 selfloop transitions, 19 changer transitions 2/57 dead transitions. [2025-02-06 04:44:58,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 57 transitions, 368 flow [2025-02-06 04:44:58,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 04:44:58,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 04:44:58,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 76 transitions. [2025-02-06 04:44:58,143 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.475 [2025-02-06 04:44:58,143 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 173 flow. Second operand 8 states and 76 transitions. [2025-02-06 04:44:58,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 57 transitions, 368 flow [2025-02-06 04:44:58,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 57 transitions, 341 flow, removed 9 selfloop flow, removed 2 redundant places. [2025-02-06 04:44:58,146 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 232 flow [2025-02-06 04:44:58,146 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=232, PETRI_PLACES=43, PETRI_TRANSITIONS=37} [2025-02-06 04:44:58,146 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 22 predicate places. [2025-02-06 04:44:58,146 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 232 flow [2025-02-06 04:44:58,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 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) [2025-02-06 04:44:58,146 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:58,148 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:58,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 04:44:58,148 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:58,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:58,148 INFO L85 PathProgramCache]: Analyzing trace with hash 664979026, now seen corresponding path program 1 times [2025-02-06 04:44:58,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:58,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116535011] [2025-02-06 04:44:58,149 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:44:58,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:58,154 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 04:44:58,165 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 04:44:58,165 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:44:58,165 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:58,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:44:58,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:58,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116535011] [2025-02-06 04:44:58,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116535011] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:44:58,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986688980] [2025-02-06 04:44:58,392 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:44:58,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:44:58,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:44:58,394 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:44:58,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 04:44:58,441 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 04:44:58,457 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 04:44:58,457 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:44:58,457 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:58,459 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-06 04:44:58,462 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:44:58,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-02-06 04:44:58,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:44:58,588 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:44:58,780 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-06 04:44:58,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 22 [2025-02-06 04:44:58,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:44:58,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986688980] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:44:58,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:44:58,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2025-02-06 04:44:58,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396030455] [2025-02-06 04:44:58,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:44:58,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-06 04:44:58,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:58,841 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-06 04:44:58,841 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2025-02-06 04:44:58,841 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-06 04:44:58,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 232 flow. Second operand has 15 states, 15 states have (on average 5.6) internal successors, (84), 15 states have internal predecessors, (84), 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) [2025-02-06 04:44:58,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:58,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-06 04:44:58,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:59,125 INFO L124 PetriNetUnfolderBase]: 121/225 cut-off events. [2025-02-06 04:44:59,125 INFO L125 PetriNetUnfolderBase]: For 309/309 co-relation queries the response was YES. [2025-02-06 04:44:59,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 867 conditions, 225 events. 121/225 cut-off events. For 309/309 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 726 event pairs, 5 based on Foata normal form. 1/225 useless extension candidates. Maximal degree in co-relation 841. Up to 131 conditions per place. [2025-02-06 04:44:59,128 INFO L140 encePairwiseOnDemand]: 11/20 looper letters, 47 selfloop transitions, 22 changer transitions 3/73 dead transitions. [2025-02-06 04:44:59,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 73 transitions, 525 flow [2025-02-06 04:44:59,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 04:44:59,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 04:44:59,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 94 transitions. [2025-02-06 04:44:59,129 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47 [2025-02-06 04:44:59,129 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 232 flow. Second operand 10 states and 94 transitions. [2025-02-06 04:44:59,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 73 transitions, 525 flow [2025-02-06 04:44:59,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 73 transitions, 492 flow, removed 5 selfloop flow, removed 5 redundant places. [2025-02-06 04:44:59,132 INFO L231 Difference]: Finished difference. Result has 49 places, 46 transitions, 321 flow [2025-02-06 04:44:59,132 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=321, PETRI_PLACES=49, PETRI_TRANSITIONS=46} [2025-02-06 04:44:59,133 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 28 predicate places. [2025-02-06 04:44:59,133 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 46 transitions, 321 flow [2025-02-06 04:44:59,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.6) internal successors, (84), 15 states have internal predecessors, (84), 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) [2025-02-06 04:44:59,133 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:59,133 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:59,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-06 04:44:59,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:44:59,334 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:59,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:59,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1657429743, now seen corresponding path program 1 times [2025-02-06 04:44:59,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:59,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526264419] [2025-02-06 04:44:59,335 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:44:59,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:59,341 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 04:44:59,349 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 04:44:59,349 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:44:59,349 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:59,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:44:59,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:59,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526264419] [2025-02-06 04:44:59,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526264419] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:44:59,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218188602] [2025-02-06 04:44:59,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:44:59,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:44:59,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:44:59,451 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:44:59,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 04:44:59,487 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 04:44:59,502 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 04:44:59,502 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:44:59,502 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:59,503 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-02-06 04:44:59,505 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:44:59,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-06 04:44:59,737 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-06 04:44:59,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 17 [2025-02-06 04:44:59,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:59,751 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:45:00,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 64 [2025-02-06 04:45:00,393 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 04:45:00,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 118 treesize of output 116 [2025-02-06 04:45:00,920 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:45:00,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218188602] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:45:00,920 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:45:00,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 22 [2025-02-06 04:45:00,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518057387] [2025-02-06 04:45:00,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:45:00,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-02-06 04:45:00,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:45:00,922 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-02-06 04:45:00,923 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2025-02-06 04:45:00,923 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-06 04:45:00,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 321 flow. Second operand has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 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) [2025-02-06 04:45:00,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:45:00,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-06 04:45:00,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:45:02,172 INFO L124 PetriNetUnfolderBase]: 365/652 cut-off events. [2025-02-06 04:45:02,173 INFO L125 PetriNetUnfolderBase]: For 1188/1188 co-relation queries the response was YES. [2025-02-06 04:45:02,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2741 conditions, 652 events. 365/652 cut-off events. For 1188/1188 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2880 event pairs, 25 based on Foata normal form. 13/665 useless extension candidates. Maximal degree in co-relation 2592. Up to 235 conditions per place. [2025-02-06 04:45:02,179 INFO L140 encePairwiseOnDemand]: 9/20 looper letters, 81 selfloop transitions, 62 changer transitions 57/201 dead transitions. [2025-02-06 04:45:02,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 201 transitions, 1563 flow [2025-02-06 04:45:02,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-02-06 04:45:02,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2025-02-06 04:45:02,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 270 transitions. [2025-02-06 04:45:02,182 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45 [2025-02-06 04:45:02,182 INFO L175 Difference]: Start difference. First operand has 49 places, 46 transitions, 321 flow. Second operand 30 states and 270 transitions. [2025-02-06 04:45:02,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 201 transitions, 1563 flow [2025-02-06 04:45:02,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 201 transitions, 1482 flow, removed 23 selfloop flow, removed 3 redundant places. [2025-02-06 04:45:02,192 INFO L231 Difference]: Finished difference. Result has 85 places, 89 transitions, 817 flow [2025-02-06 04:45:02,192 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=817, PETRI_PLACES=85, PETRI_TRANSITIONS=89} [2025-02-06 04:45:02,193 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 64 predicate places. [2025-02-06 04:45:02,193 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 89 transitions, 817 flow [2025-02-06 04:45:02,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 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) [2025-02-06 04:45:02,194 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:45:02,194 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:45:02,200 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-06 04:45:02,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:45:02,398 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:45:02,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:45:02,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1050676446, now seen corresponding path program 2 times [2025-02-06 04:45:02,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:45:02,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868432015] [2025-02-06 04:45:02,399 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:45:02,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:45:02,404 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-06 04:45:02,431 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 04:45:02,433 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:45:02,433 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:45:02,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:45:02,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:45:02,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868432015] [2025-02-06 04:45:02,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868432015] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:45:02,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236063451] [2025-02-06 04:45:02,667 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:45:02,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:45:02,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:45:02,669 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:45:02,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 04:45:02,707 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-06 04:45:02,721 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 04:45:02,721 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:45:02,721 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:45:02,723 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-02-06 04:45:02,724 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:45:02,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-02-06 04:45:02,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:45:02,839 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:45:02,951 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 04:45:02,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 33 [2025-02-06 04:45:03,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:45:03,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236063451] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:45:03,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:45:03,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 13 [2025-02-06 04:45:03,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604418068] [2025-02-06 04:45:03,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:45:03,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-06 04:45:03,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:45:03,035 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-06 04:45:03,035 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2025-02-06 04:45:03,035 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-06 04:45:03,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 89 transitions, 817 flow. Second operand has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 14 states have internal predecessors, (76), 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) [2025-02-06 04:45:03,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:45:03,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-06 04:45:03,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:45:03,285 INFO L124 PetriNetUnfolderBase]: 253/460 cut-off events. [2025-02-06 04:45:03,288 INFO L125 PetriNetUnfolderBase]: For 1468/1468 co-relation queries the response was YES. [2025-02-06 04:45:03,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2328 conditions, 460 events. 253/460 cut-off events. For 1468/1468 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1881 event pairs, 23 based on Foata normal form. 1/459 useless extension candidates. Maximal degree in co-relation 2257. Up to 350 conditions per place. [2025-02-06 04:45:03,292 INFO L140 encePairwiseOnDemand]: 10/20 looper letters, 72 selfloop transitions, 41 changer transitions 3/117 dead transitions. [2025-02-06 04:45:03,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 117 transitions, 1188 flow [2025-02-06 04:45:03,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 04:45:03,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 04:45:03,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 91 transitions. [2025-02-06 04:45:03,294 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41363636363636364 [2025-02-06 04:45:03,294 INFO L175 Difference]: Start difference. First operand has 85 places, 89 transitions, 817 flow. Second operand 11 states and 91 transitions. [2025-02-06 04:45:03,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 117 transitions, 1188 flow [2025-02-06 04:45:03,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 117 transitions, 1060 flow, removed 41 selfloop flow, removed 11 redundant places. [2025-02-06 04:45:03,307 INFO L231 Difference]: Finished difference. Result has 79 places, 95 transitions, 855 flow [2025-02-06 04:45:03,307 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=695, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=855, PETRI_PLACES=79, PETRI_TRANSITIONS=95} [2025-02-06 04:45:03,308 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 58 predicate places. [2025-02-06 04:45:03,309 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 95 transitions, 855 flow [2025-02-06 04:45:03,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 14 states have internal predecessors, (76), 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) [2025-02-06 04:45:03,309 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:45:03,310 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:45:03,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-06 04:45:03,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:45:03,511 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:45:03,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:45:03,511 INFO L85 PathProgramCache]: Analyzing trace with hash 743933394, now seen corresponding path program 3 times [2025-02-06 04:45:03,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:45:03,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298137788] [2025-02-06 04:45:03,511 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:45:03,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:45:03,516 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 2 equivalence classes. [2025-02-06 04:45:03,526 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 04:45:03,527 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:45:03,527 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:45:03,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:45:03,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:45:03,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298137788] [2025-02-06 04:45:03,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298137788] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:45:03,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228945586] [2025-02-06 04:45:03,703 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:45:03,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:45:03,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:45:03,705 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:45:03,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 04:45:03,740 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 2 equivalence classes. [2025-02-06 04:45:03,764 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 04:45:03,764 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:45:03,764 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:45:03,765 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-02-06 04:45:03,766 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:45:03,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-02-06 04:45:03,852 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:45:03,852 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:45:03,886 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 04:45:03,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 73 [2025-02-06 04:45:03,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:45:03,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228945586] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:45:03,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:45:03,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5] total 9 [2025-02-06 04:45:03,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889505447] [2025-02-06 04:45:03,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:45:03,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 04:45:03,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:45:03,974 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 04:45:03,974 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2025-02-06 04:45:03,974 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-06 04:45:03,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 95 transitions, 855 flow. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:45:03,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:45:03,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-06 04:45:03,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:45:04,097 INFO L124 PetriNetUnfolderBase]: 255/468 cut-off events. [2025-02-06 04:45:04,098 INFO L125 PetriNetUnfolderBase]: For 1536/1536 co-relation queries the response was YES. [2025-02-06 04:45:04,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2322 conditions, 468 events. 255/468 cut-off events. For 1536/1536 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1915 event pairs, 36 based on Foata normal form. 1/469 useless extension candidates. Maximal degree in co-relation 2163. Up to 365 conditions per place. [2025-02-06 04:45:04,101 INFO L140 encePairwiseOnDemand]: 13/20 looper letters, 74 selfloop transitions, 29 changer transitions 3/107 dead transitions. [2025-02-06 04:45:04,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 107 transitions, 1122 flow [2025-02-06 04:45:04,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 04:45:04,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 04:45:04,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 61 transitions. [2025-02-06 04:45:04,102 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4357142857142857 [2025-02-06 04:45:04,102 INFO L175 Difference]: Start difference. First operand has 79 places, 95 transitions, 855 flow. Second operand 7 states and 61 transitions. [2025-02-06 04:45:04,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 107 transitions, 1122 flow [2025-02-06 04:45:04,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 107 transitions, 1037 flow, removed 8 selfloop flow, removed 7 redundant places. [2025-02-06 04:45:04,108 INFO L231 Difference]: Finished difference. Result has 79 places, 96 transitions, 849 flow [2025-02-06 04:45:04,109 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=772, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=849, PETRI_PLACES=79, PETRI_TRANSITIONS=96} [2025-02-06 04:45:04,109 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 58 predicate places. [2025-02-06 04:45:04,109 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 96 transitions, 849 flow [2025-02-06 04:45:04,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:45:04,109 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:45:04,109 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:45:04,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-06 04:45:04,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-02-06 04:45:04,314 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:45:04,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:45:04,315 INFO L85 PathProgramCache]: Analyzing trace with hash 2066376821, now seen corresponding path program 2 times [2025-02-06 04:45:04,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:45:04,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755489067] [2025-02-06 04:45:04,315 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:45:04,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:45:04,320 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-02-06 04:45:04,330 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 04:45:04,330 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:45:04,330 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:45:04,423 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:45:04,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:45:04,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755489067] [2025-02-06 04:45:04,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755489067] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:45:04,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974949620] [2025-02-06 04:45:04,424 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:45:04,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:45:04,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:45:04,427 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:45:04,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 04:45:04,461 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-02-06 04:45:04,482 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 04:45:04,482 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:45:04,482 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:45:04,484 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 04:45:04,485 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:45:04,514 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:45:04,514 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:45:04,578 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:45:04,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974949620] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:45:04,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:45:04,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2025-02-06 04:45:04,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967709505] [2025-02-06 04:45:04,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:45:04,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 04:45:04,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:45:04,579 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 04:45:04,579 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2025-02-06 04:45:04,579 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-06 04:45:04,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 96 transitions, 849 flow. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 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) [2025-02-06 04:45:04,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:45:04,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-06 04:45:04,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:45:04,982 INFO L124 PetriNetUnfolderBase]: 303/565 cut-off events. [2025-02-06 04:45:04,983 INFO L125 PetriNetUnfolderBase]: For 1761/1761 co-relation queries the response was YES. [2025-02-06 04:45:04,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2639 conditions, 565 events. 303/565 cut-off events. For 1761/1761 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2505 event pairs, 30 based on Foata normal form. 15/580 useless extension candidates. Maximal degree in co-relation 2454. Up to 146 conditions per place. [2025-02-06 04:45:04,987 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 94 selfloop transitions, 70 changer transitions 5/170 dead transitions. [2025-02-06 04:45:04,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 170 transitions, 1612 flow [2025-02-06 04:45:04,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-06 04:45:04,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-02-06 04:45:04,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 134 transitions. [2025-02-06 04:45:04,989 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41875 [2025-02-06 04:45:04,989 INFO L175 Difference]: Start difference. First operand has 79 places, 96 transitions, 849 flow. Second operand 16 states and 134 transitions. [2025-02-06 04:45:04,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 170 transitions, 1612 flow [2025-02-06 04:45:04,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 170 transitions, 1551 flow, removed 3 selfloop flow, removed 5 redundant places. [2025-02-06 04:45:04,996 INFO L231 Difference]: Finished difference. Result has 94 places, 118 transitions, 1182 flow [2025-02-06 04:45:04,997 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=788, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1182, PETRI_PLACES=94, PETRI_TRANSITIONS=118} [2025-02-06 04:45:04,997 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 73 predicate places. [2025-02-06 04:45:04,997 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 118 transitions, 1182 flow [2025-02-06 04:45:04,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 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) [2025-02-06 04:45:04,997 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:45:04,998 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:45:05,007 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-06 04:45:05,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:45:05,199 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:45:05,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:45:05,200 INFO L85 PathProgramCache]: Analyzing trace with hash 19119941, now seen corresponding path program 1 times [2025-02-06 04:45:05,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:45:05,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336461871] [2025-02-06 04:45:05,200 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:45:05,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:45:05,204 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 04:45:05,212 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 04:45:05,214 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:45:05,214 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:45:05,326 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:45:05,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:45:05,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336461871] [2025-02-06 04:45:05,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336461871] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:45:05,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222272717] [2025-02-06 04:45:05,327 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:45:05,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:45:05,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:45:05,328 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:45:05,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-06 04:45:05,370 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 04:45:05,382 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 04:45:05,382 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:45:05,382 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:45:05,386 INFO L256 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-02-06 04:45:05,391 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:45:05,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-06 04:45:05,566 INFO L349 Elim1Store]: treesize reduction 18, result has 28.0 percent of original size [2025-02-06 04:45:05,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 105 treesize of output 63 [2025-02-06 04:45:05,600 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:45:05,601 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:45:05,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 220 treesize of output 194 [2025-02-06 04:45:05,971 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 04:45:05,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 15 case distinctions, treesize of input 778 treesize of output 574 [2025-02-06 04:45:14,450 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:45:14,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222272717] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:45:14,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:45:14,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2025-02-06 04:45:14,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88085312] [2025-02-06 04:45:14,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:45:14,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-06 04:45:14,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:45:14,452 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-06 04:45:14,452 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2025-02-06 04:45:14,452 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-06 04:45:14,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 118 transitions, 1182 flow. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 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) [2025-02-06 04:45:14,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:45:14,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-06 04:45:14,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:45:15,519 INFO L124 PetriNetUnfolderBase]: 360/723 cut-off events. [2025-02-06 04:45:15,519 INFO L125 PetriNetUnfolderBase]: For 3247/3247 co-relation queries the response was YES. [2025-02-06 04:45:15,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3833 conditions, 723 events. 360/723 cut-off events. For 3247/3247 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3738 event pairs, 29 based on Foata normal form. 13/735 useless extension candidates. Maximal degree in co-relation 3538. Up to 201 conditions per place. [2025-02-06 04:45:15,523 INFO L140 encePairwiseOnDemand]: 10/20 looper letters, 92 selfloop transitions, 64 changer transitions 73/230 dead transitions. [2025-02-06 04:45:15,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 230 transitions, 2418 flow [2025-02-06 04:45:15,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-02-06 04:45:15,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2025-02-06 04:45:15,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 247 transitions. [2025-02-06 04:45:15,526 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44107142857142856 [2025-02-06 04:45:15,526 INFO L175 Difference]: Start difference. First operand has 94 places, 118 transitions, 1182 flow. Second operand 28 states and 247 transitions. [2025-02-06 04:45:15,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 230 transitions, 2418 flow [2025-02-06 04:45:15,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 230 transitions, 2135 flow, removed 123 selfloop flow, removed 3 redundant places. [2025-02-06 04:45:15,540 INFO L231 Difference]: Finished difference. Result has 123 places, 104 transitions, 1053 flow [2025-02-06 04:45:15,541 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1012, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1053, PETRI_PLACES=123, PETRI_TRANSITIONS=104} [2025-02-06 04:45:15,541 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 102 predicate places. [2025-02-06 04:45:15,541 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 104 transitions, 1053 flow [2025-02-06 04:45:15,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 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) [2025-02-06 04:45:15,542 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:45:15,542 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:45:15,548 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-06 04:45:15,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-02-06 04:45:15,743 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:45:15,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:45:15,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1796501523, now seen corresponding path program 3 times [2025-02-06 04:45:15,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:45:15,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123317780] [2025-02-06 04:45:15,744 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:45:15,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:45:15,750 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 2 equivalence classes. [2025-02-06 04:45:15,760 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 04:45:15,761 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:45:15,761 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:45:15,882 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:45:15,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:45:15,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123317780] [2025-02-06 04:45:15,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123317780] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:45:15,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175230297] [2025-02-06 04:45:15,883 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:45:15,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:45:15,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:45:15,885 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:45:15,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-06 04:45:15,925 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 2 equivalence classes. [2025-02-06 04:45:15,970 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 04:45:15,970 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:45:15,970 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:45:15,972 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 04:45:15,973 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:45:16,012 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:45:16,012 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:45:16,100 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:45:16,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175230297] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:45:16,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:45:16,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2025-02-06 04:45:16,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524563282] [2025-02-06 04:45:16,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:45:16,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 04:45:16,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:45:16,102 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 04:45:16,102 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-06 04:45:16,102 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-06 04:45:16,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 104 transitions, 1053 flow. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:45:16,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:45:16,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-06 04:45:16,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:45:16,595 INFO L124 PetriNetUnfolderBase]: 313/668 cut-off events. [2025-02-06 04:45:16,595 INFO L125 PetriNetUnfolderBase]: For 2944/2944 co-relation queries the response was YES. [2025-02-06 04:45:16,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3334 conditions, 668 events. 313/668 cut-off events. For 2944/2944 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3508 event pairs, 38 based on Foata normal form. 15/682 useless extension candidates. Maximal degree in co-relation 3165. Up to 173 conditions per place. [2025-02-06 04:45:16,600 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 105 selfloop transitions, 100 changer transitions 0/206 dead transitions. [2025-02-06 04:45:16,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 206 transitions, 2166 flow [2025-02-06 04:45:16,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-02-06 04:45:16,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2025-02-06 04:45:16,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 181 transitions. [2025-02-06 04:45:16,601 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4525 [2025-02-06 04:45:16,601 INFO L175 Difference]: Start difference. First operand has 123 places, 104 transitions, 1053 flow. Second operand 20 states and 181 transitions. [2025-02-06 04:45:16,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 206 transitions, 2166 flow [2025-02-06 04:45:16,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 206 transitions, 1971 flow, removed 58 selfloop flow, removed 17 redundant places. [2025-02-06 04:45:16,613 INFO L231 Difference]: Finished difference. Result has 125 places, 149 transitions, 1654 flow [2025-02-06 04:45:16,614 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=948, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1654, PETRI_PLACES=125, PETRI_TRANSITIONS=149} [2025-02-06 04:45:16,615 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 104 predicate places. [2025-02-06 04:45:16,615 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 149 transitions, 1654 flow [2025-02-06 04:45:16,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:45:16,615 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:45:16,615 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:45:16,621 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-06 04:45:16,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:45:16,816 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:45:16,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:45:16,817 INFO L85 PathProgramCache]: Analyzing trace with hash 67466208, now seen corresponding path program 4 times [2025-02-06 04:45:16,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:45:16,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021454048] [2025-02-06 04:45:16,817 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:45:16,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:45:16,823 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 17 statements into 2 equivalence classes. [2025-02-06 04:45:16,835 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 04:45:16,835 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:45:16,835 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:45:16,980 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:45:16,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:45:16,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021454048] [2025-02-06 04:45:16,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021454048] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:45:16,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519291545] [2025-02-06 04:45:16,981 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:45:16,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:45:16,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:45:16,985 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:45:16,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-06 04:45:17,021 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 17 statements into 2 equivalence classes. [2025-02-06 04:45:17,034 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 04:45:17,034 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:45:17,034 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:45:17,035 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-02-06 04:45:17,037 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:45:17,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-06 04:45:17,179 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-06 04:45:17,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 31 [2025-02-06 04:45:17,199 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:45:17,199 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:45:17,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 116 [2025-02-06 04:45:17,444 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 04:45:17,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 298 treesize of output 240 [2025-02-06 04:45:18,109 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:45:18,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519291545] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:45:18,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:45:18,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2025-02-06 04:45:18,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425761593] [2025-02-06 04:45:18,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:45:18,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-06 04:45:18,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:45:18,111 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-06 04:45:18,111 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2025-02-06 04:45:18,111 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-06 04:45:18,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 149 transitions, 1654 flow. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 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) [2025-02-06 04:45:18,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:45:18,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-06 04:45:18,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:45:18,742 INFO L124 PetriNetUnfolderBase]: 373/759 cut-off events. [2025-02-06 04:45:18,743 INFO L125 PetriNetUnfolderBase]: For 3358/3358 co-relation queries the response was YES. [2025-02-06 04:45:18,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4149 conditions, 759 events. 373/759 cut-off events. For 3358/3358 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3973 event pairs, 20 based on Foata normal form. 5/763 useless extension candidates. Maximal degree in co-relation 4014. Up to 403 conditions per place. [2025-02-06 04:45:18,748 INFO L140 encePairwiseOnDemand]: 10/20 looper letters, 110 selfloop transitions, 69 changer transitions 50/230 dead transitions. [2025-02-06 04:45:18,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 230 transitions, 2583 flow [2025-02-06 04:45:18,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-02-06 04:45:18,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2025-02-06 04:45:18,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 216 transitions. [2025-02-06 04:45:18,749 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4 [2025-02-06 04:45:18,749 INFO L175 Difference]: Start difference. First operand has 125 places, 149 transitions, 1654 flow. Second operand 27 states and 216 transitions. [2025-02-06 04:45:18,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 230 transitions, 2583 flow [2025-02-06 04:45:18,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 230 transitions, 2498 flow, removed 36 selfloop flow, removed 2 redundant places. [2025-02-06 04:45:18,764 INFO L231 Difference]: Finished difference. Result has 154 places, 147 transitions, 1710 flow [2025-02-06 04:45:18,764 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1549, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1710, PETRI_PLACES=154, PETRI_TRANSITIONS=147} [2025-02-06 04:45:18,766 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 133 predicate places. [2025-02-06 04:45:18,766 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 147 transitions, 1710 flow [2025-02-06 04:45:18,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 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) [2025-02-06 04:45:18,766 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:45:18,766 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:45:18,773 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-06 04:45:18,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:45:18,970 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:45:18,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:45:18,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1879618413, now seen corresponding path program 4 times [2025-02-06 04:45:18,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:45:18,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096262155] [2025-02-06 04:45:18,970 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:45:18,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:45:18,975 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 17 statements into 2 equivalence classes. [2025-02-06 04:45:18,981 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 04:45:18,981 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:45:18,981 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:45:19,078 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:45:19,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:45:19,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096262155] [2025-02-06 04:45:19,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096262155] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:45:19,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858571894] [2025-02-06 04:45:19,079 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:45:19,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:45:19,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:45:19,081 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:45:19,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-06 04:45:19,118 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 17 statements into 2 equivalence classes. [2025-02-06 04:45:19,155 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 04:45:19,155 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:45:19,156 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:45:19,157 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 04:45:19,157 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:45:19,192 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:45:19,193 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:45:19,267 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:45:19,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858571894] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:45:19,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:45:19,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2025-02-06 04:45:19,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232630790] [2025-02-06 04:45:19,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:45:19,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 04:45:19,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:45:19,268 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 04:45:19,268 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2025-02-06 04:45:19,268 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-06 04:45:19,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 147 transitions, 1710 flow. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:45:19,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:45:19,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-06 04:45:19,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:45:19,613 INFO L124 PetriNetUnfolderBase]: 341/641 cut-off events. [2025-02-06 04:45:19,613 INFO L125 PetriNetUnfolderBase]: For 3709/3709 co-relation queries the response was YES. [2025-02-06 04:45:19,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3835 conditions, 641 events. 341/641 cut-off events. For 3709/3709 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2991 event pairs, 45 based on Foata normal form. 18/658 useless extension candidates. Maximal degree in co-relation 3770. Up to 209 conditions per place. [2025-02-06 04:45:19,618 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 105 selfloop transitions, 82 changer transitions 0/188 dead transitions. [2025-02-06 04:45:19,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 188 transitions, 2303 flow [2025-02-06 04:45:19,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 04:45:19,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-06 04:45:19,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 143 transitions. [2025-02-06 04:45:19,619 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4766666666666667 [2025-02-06 04:45:19,619 INFO L175 Difference]: Start difference. First operand has 154 places, 147 transitions, 1710 flow. Second operand 15 states and 143 transitions. [2025-02-06 04:45:19,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 188 transitions, 2303 flow [2025-02-06 04:45:19,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 188 transitions, 2090 flow, removed 78 selfloop flow, removed 12 redundant places. [2025-02-06 04:45:19,633 INFO L231 Difference]: Finished difference. Result has 136 places, 148 transitions, 1749 flow [2025-02-06 04:45:19,633 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1459, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1749, PETRI_PLACES=136, PETRI_TRANSITIONS=148} [2025-02-06 04:45:19,633 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 115 predicate places. [2025-02-06 04:45:19,634 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 148 transitions, 1749 flow [2025-02-06 04:45:19,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:45:19,634 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:45:19,634 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:45:19,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-06 04:45:19,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:45:19,834 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:45:19,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:45:19,835 INFO L85 PathProgramCache]: Analyzing trace with hash -2129604195, now seen corresponding path program 5 times [2025-02-06 04:45:19,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:45:19,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142384426] [2025-02-06 04:45:19,835 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:45:19,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:45:19,841 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-02-06 04:45:19,849 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 04:45:19,850 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:45:19,850 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:45:19,932 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:45:19,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:45:19,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142384426] [2025-02-06 04:45:19,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142384426] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:45:19,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510887467] [2025-02-06 04:45:19,933 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:45:19,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:45:19,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:45:19,938 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:45:19,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-06 04:45:19,979 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-02-06 04:45:20,037 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 04:45:20,037 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:45:20,037 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:45:20,039 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 04:45:20,039 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:45:20,083 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:45:20,083 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:45:20,134 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:45:20,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510887467] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:45:20,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:45:20,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2025-02-06 04:45:20,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975825060] [2025-02-06 04:45:20,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:45:20,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-06 04:45:20,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:45:20,136 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-06 04:45:20,137 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2025-02-06 04:45:20,137 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-06 04:45:20,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 148 transitions, 1749 flow. Second operand has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:45:20,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:45:20,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-06 04:45:20,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:45:20,595 INFO L124 PetriNetUnfolderBase]: 620/1141 cut-off events. [2025-02-06 04:45:20,596 INFO L125 PetriNetUnfolderBase]: For 6390/6390 co-relation queries the response was YES. [2025-02-06 04:45:20,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6725 conditions, 1141 events. 620/1141 cut-off events. For 6390/6390 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5897 event pairs, 15 based on Foata normal form. 6/1146 useless extension candidates. Maximal degree in co-relation 6663. Up to 263 conditions per place. [2025-02-06 04:45:20,605 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 188 selfloop transitions, 115 changer transitions 1/305 dead transitions. [2025-02-06 04:45:20,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 305 transitions, 4012 flow [2025-02-06 04:45:20,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-06 04:45:20,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-02-06 04:45:20,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 171 transitions. [2025-02-06 04:45:20,606 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.475 [2025-02-06 04:45:20,606 INFO L175 Difference]: Start difference. First operand has 136 places, 148 transitions, 1749 flow. Second operand 18 states and 171 transitions. [2025-02-06 04:45:20,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 305 transitions, 4012 flow [2025-02-06 04:45:20,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 305 transitions, 3827 flow, removed 34 selfloop flow, removed 9 redundant places. [2025-02-06 04:45:20,628 INFO L231 Difference]: Finished difference. Result has 150 places, 208 transitions, 2718 flow [2025-02-06 04:45:20,629 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1617, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2718, PETRI_PLACES=150, PETRI_TRANSITIONS=208} [2025-02-06 04:45:20,629 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 129 predicate places. [2025-02-06 04:45:20,629 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 208 transitions, 2718 flow [2025-02-06 04:45:20,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:45:20,629 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:45:20,630 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:45:20,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-02-06 04:45:20,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-02-06 04:45:20,834 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:45:20,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:45:20,835 INFO L85 PathProgramCache]: Analyzing trace with hash -199675415, now seen corresponding path program 6 times [2025-02-06 04:45:20,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:45:20,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118698091] [2025-02-06 04:45:20,835 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 04:45:20,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:45:20,840 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 17 statements into 2 equivalence classes. [2025-02-06 04:45:20,846 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 04:45:20,846 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-06 04:45:20,846 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:45:20,917 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:45:20,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:45:20,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118698091] [2025-02-06 04:45:20,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118698091] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:45:20,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518869908] [2025-02-06 04:45:20,918 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 04:45:20,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:45:20,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:45:20,921 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:45:20,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-06 04:45:20,956 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 17 statements into 2 equivalence classes. [2025-02-06 04:45:20,985 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 04:45:20,985 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-06 04:45:20,985 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:45:20,986 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 04:45:20,987 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:45:21,026 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:45:21,026 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:45:21,077 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:45:21,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518869908] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:45:21,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:45:21,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2025-02-06 04:45:21,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117493810] [2025-02-06 04:45:21,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:45:21,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-06 04:45:21,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:45:21,078 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-06 04:45:21,078 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2025-02-06 04:45:21,078 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-06 04:45:21,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 208 transitions, 2718 flow. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:45:21,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:45:21,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-06 04:45:21,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:45:21,526 INFO L124 PetriNetUnfolderBase]: 710/1301 cut-off events. [2025-02-06 04:45:21,527 INFO L125 PetriNetUnfolderBase]: For 10085/10085 co-relation queries the response was YES. [2025-02-06 04:45:21,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8266 conditions, 1301 events. 710/1301 cut-off events. For 10085/10085 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 6825 event pairs, 37 based on Foata normal form. 14/1314 useless extension candidates. Maximal degree in co-relation 8198. Up to 359 conditions per place. [2025-02-06 04:45:21,538 INFO L140 encePairwiseOnDemand]: 13/20 looper letters, 152 selfloop transitions, 168 changer transitions 0/321 dead transitions. [2025-02-06 04:45:21,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 321 transitions, 4504 flow [2025-02-06 04:45:21,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-02-06 04:45:21,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2025-02-06 04:45:21,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 176 transitions. [2025-02-06 04:45:21,541 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4631578947368421 [2025-02-06 04:45:21,541 INFO L175 Difference]: Start difference. First operand has 150 places, 208 transitions, 2718 flow. Second operand 19 states and 176 transitions. [2025-02-06 04:45:21,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 321 transitions, 4504 flow [2025-02-06 04:45:21,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 321 transitions, 4262 flow, removed 96 selfloop flow, removed 5 redundant places. [2025-02-06 04:45:21,578 INFO L231 Difference]: Finished difference. Result has 170 places, 246 transitions, 3584 flow [2025-02-06 04:45:21,578 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2488, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3584, PETRI_PLACES=170, PETRI_TRANSITIONS=246} [2025-02-06 04:45:21,578 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 149 predicate places. [2025-02-06 04:45:21,578 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 246 transitions, 3584 flow [2025-02-06 04:45:21,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:45:21,579 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:45:21,579 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:45:21,585 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-06 04:45:21,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-02-06 04:45:21,783 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:45:21,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:45:21,784 INFO L85 PathProgramCache]: Analyzing trace with hash -276536195, now seen corresponding path program 7 times [2025-02-06 04:45:21,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:45:21,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633607529] [2025-02-06 04:45:21,784 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 04:45:21,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:45:21,787 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 04:45:21,793 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 04:45:21,793 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:45:21,793 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:45:21,929 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:45:21,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:45:21,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633607529] [2025-02-06 04:45:21,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633607529] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:45:21,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257067624] [2025-02-06 04:45:21,929 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 04:45:21,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:45:21,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:45:21,931 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:45:21,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-06 04:45:21,969 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 04:45:21,989 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 04:45:21,989 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:45:21,989 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:45:21,990 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 04:45:21,990 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:45:22,069 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:45:22,069 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:45:22,202 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:45:22,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257067624] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:45:22,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:45:22,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2025-02-06 04:45:22,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821727863] [2025-02-06 04:45:22,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:45:22,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-06 04:45:22,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:45:22,203 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-06 04:45:22,203 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2025-02-06 04:45:22,203 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-06 04:45:22,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 246 transitions, 3584 flow. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 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) [2025-02-06 04:45:22,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:45:22,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-06 04:45:22,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:45:22,675 INFO L124 PetriNetUnfolderBase]: 793/1450 cut-off events. [2025-02-06 04:45:22,675 INFO L125 PetriNetUnfolderBase]: For 15236/15236 co-relation queries the response was YES. [2025-02-06 04:45:22,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10005 conditions, 1450 events. 793/1450 cut-off events. For 15236/15236 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 7817 event pairs, 62 based on Foata normal form. 9/1458 useless extension candidates. Maximal degree in co-relation 9933. Up to 512 conditions per place. [2025-02-06 04:45:22,686 INFO L140 encePairwiseOnDemand]: 13/20 looper letters, 175 selfloop transitions, 159 changer transitions 0/335 dead transitions. [2025-02-06 04:45:22,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 335 transitions, 5297 flow [2025-02-06 04:45:22,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-06 04:45:22,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-02-06 04:45:22,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 140 transitions. [2025-02-06 04:45:22,687 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4375 [2025-02-06 04:45:22,687 INFO L175 Difference]: Start difference. First operand has 170 places, 246 transitions, 3584 flow. Second operand 16 states and 140 transitions. [2025-02-06 04:45:22,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 335 transitions, 5297 flow [2025-02-06 04:45:22,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 335 transitions, 5059 flow, removed 98 selfloop flow, removed 6 redundant places. [2025-02-06 04:45:22,736 INFO L231 Difference]: Finished difference. Result has 186 places, 273 transitions, 4315 flow [2025-02-06 04:45:22,736 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=3404, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4315, PETRI_PLACES=186, PETRI_TRANSITIONS=273} [2025-02-06 04:45:22,737 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 165 predicate places. [2025-02-06 04:45:22,737 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 273 transitions, 4315 flow [2025-02-06 04:45:22,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 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) [2025-02-06 04:45:22,737 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:45:22,737 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:45:22,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-02-06 04:45:22,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:45:22,938 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:45:22,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:45:22,938 INFO L85 PathProgramCache]: Analyzing trace with hash -258102169, now seen corresponding path program 8 times [2025-02-06 04:45:22,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:45:22,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380310819] [2025-02-06 04:45:22,938 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:45:22,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:45:22,942 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-02-06 04:45:22,948 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 04:45:22,948 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:45:22,948 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:45:23,063 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:45:23,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:45:23,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380310819] [2025-02-06 04:45:23,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380310819] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:45:23,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589119286] [2025-02-06 04:45:23,063 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:45:23,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:45:23,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:45:23,066 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:45:23,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-06 04:45:23,103 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-02-06 04:45:23,147 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 04:45:23,147 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:45:23,147 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:45:23,149 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 04:45:23,150 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:45:23,198 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:45:23,198 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:45:23,344 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:45:23,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589119286] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:45:23,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:45:23,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2025-02-06 04:45:23,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170447810] [2025-02-06 04:45:23,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:45:23,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 04:45:23,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:45:23,344 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 04:45:23,345 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-06 04:45:23,345 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-06 04:45:23,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 273 transitions, 4315 flow. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 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) [2025-02-06 04:45:23,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:45:23,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-06 04:45:23,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:45:23,778 INFO L124 PetriNetUnfolderBase]: 869/1613 cut-off events. [2025-02-06 04:45:23,779 INFO L125 PetriNetUnfolderBase]: For 18428/18428 co-relation queries the response was YES. [2025-02-06 04:45:23,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11480 conditions, 1613 events. 869/1613 cut-off events. For 18428/18428 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 9074 event pairs, 233 based on Foata normal form. 15/1627 useless extension candidates. Maximal degree in co-relation 11403. Up to 1153 conditions per place. [2025-02-06 04:45:23,790 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 237 selfloop transitions, 113 changer transitions 3/354 dead transitions. [2025-02-06 04:45:23,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 354 transitions, 5946 flow [2025-02-06 04:45:23,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 04:45:23,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-06 04:45:23,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 133 transitions. [2025-02-06 04:45:23,792 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44333333333333336 [2025-02-06 04:45:23,792 INFO L175 Difference]: Start difference. First operand has 186 places, 273 transitions, 4315 flow. Second operand 15 states and 133 transitions. [2025-02-06 04:45:23,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 354 transitions, 5946 flow [2025-02-06 04:45:23,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 354 transitions, 5871 flow, removed 14 selfloop flow, removed 4 redundant places. [2025-02-06 04:45:23,861 INFO L231 Difference]: Finished difference. Result has 201 places, 305 transitions, 5182 flow [2025-02-06 04:45:23,861 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=4223, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=5182, PETRI_PLACES=201, PETRI_TRANSITIONS=305} [2025-02-06 04:45:23,862 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 180 predicate places. [2025-02-06 04:45:23,862 INFO L471 AbstractCegarLoop]: Abstraction has has 201 places, 305 transitions, 5182 flow [2025-02-06 04:45:23,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 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) [2025-02-06 04:45:23,862 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:45:23,862 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:45:23,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-02-06 04:45:24,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-02-06 04:45:24,064 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:45:24,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:45:24,064 INFO L85 PathProgramCache]: Analyzing trace with hash -308051378, now seen corresponding path program 5 times [2025-02-06 04:45:24,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:45:24,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972322631] [2025-02-06 04:45:24,065 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:45:24,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:45:24,073 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-02-06 04:45:24,087 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:45:24,092 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:45:24,092 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:45:24,204 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:45:24,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:45:24,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972322631] [2025-02-06 04:45:24,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972322631] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:45:24,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093494741] [2025-02-06 04:45:24,205 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:45:24,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:45:24,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:45:24,208 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:45:24,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-06 04:45:24,248 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-02-06 04:45:24,274 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:45:24,274 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:45:24,274 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:45:24,275 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-06 04:45:24,276 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:45:24,354 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:45:24,354 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:45:24,431 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:45:24,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093494741] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:45:24,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:45:24,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 14 [2025-02-06 04:45:24,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115812677] [2025-02-06 04:45:24,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:45:24,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-06 04:45:24,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:45:24,432 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-06 04:45:24,432 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2025-02-06 04:45:24,432 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-06 04:45:24,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 305 transitions, 5182 flow. Second operand has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 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) [2025-02-06 04:45:24,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:45:24,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-06 04:45:24,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:45:28,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-02-06 04:45:40,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-02-06 04:45:44,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-02-06 04:45:48,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-02-06 04:45:52,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-02-06 04:45:56,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-02-06 04:46:00,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-02-06 04:46:04,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-02-06 04:46:05,082 INFO L124 PetriNetUnfolderBase]: 1034/1908 cut-off events. [2025-02-06 04:46:05,083 INFO L125 PetriNetUnfolderBase]: For 23501/23501 co-relation queries the response was YES. [2025-02-06 04:46:05,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14037 conditions, 1908 events. 1034/1908 cut-off events. For 23501/23501 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 11017 event pairs, 74 based on Foata normal form. 54/1961 useless extension candidates. Maximal degree in co-relation 13954. Up to 588 conditions per place. [2025-02-06 04:46:05,098 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 287 selfloop transitions, 127 changer transitions 2/417 dead transitions. [2025-02-06 04:46:05,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 417 transitions, 7476 flow [2025-02-06 04:46:05,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-06 04:46:05,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-02-06 04:46:05,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 140 transitions. [2025-02-06 04:46:05,099 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-02-06 04:46:05,099 INFO L175 Difference]: Start difference. First operand has 201 places, 305 transitions, 5182 flow. Second operand 14 states and 140 transitions. [2025-02-06 04:46:05,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 417 transitions, 7476 flow [2025-02-06 04:46:05,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 417 transitions, 7282 flow, removed 77 selfloop flow, removed 8 redundant places. [2025-02-06 04:46:05,187 INFO L231 Difference]: Finished difference. Result has 210 places, 314 transitions, 5570 flow [2025-02-06 04:46:05,187 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=4784, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5570, PETRI_PLACES=210, PETRI_TRANSITIONS=314} [2025-02-06 04:46:05,188 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 189 predicate places. [2025-02-06 04:46:05,188 INFO L471 AbstractCegarLoop]: Abstraction has has 210 places, 314 transitions, 5570 flow [2025-02-06 04:46:05,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 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) [2025-02-06 04:46:05,188 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:46:05,188 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:46:05,195 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-02-06 04:46:05,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-02-06 04:46:05,389 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:46:05,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:46:05,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1626497579, now seen corresponding path program 2 times [2025-02-06 04:46:05,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:46:05,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590666614] [2025-02-06 04:46:05,390 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:46:05,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:46:05,393 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-02-06 04:46:05,399 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:46:05,399 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:46:05,399 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:46:05,504 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:46:05,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:46:05,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590666614] [2025-02-06 04:46:05,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590666614] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:46:05,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884408361] [2025-02-06 04:46:05,505 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:46:05,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:46:05,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:46:05,510 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:46:05,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-06 04:46:05,552 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-02-06 04:46:05,595 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:46:05,596 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:46:05,596 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:46:05,597 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 04:46:05,599 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:46:05,629 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:46:05,629 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:46:05,719 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:46:05,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884408361] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:46:05,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:46:05,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 11 [2025-02-06 04:46:05,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837294591] [2025-02-06 04:46:05,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:46:05,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 04:46:05,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:46:05,720 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 04:46:05,720 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-02-06 04:46:05,720 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-06 04:46:05,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 314 transitions, 5570 flow. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:46:05,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:46:05,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-06 04:46:05,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:46:06,209 INFO L124 PetriNetUnfolderBase]: 1020/1851 cut-off events. [2025-02-06 04:46:06,209 INFO L125 PetriNetUnfolderBase]: For 25157/25157 co-relation queries the response was YES. [2025-02-06 04:46:06,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14403 conditions, 1851 events. 1020/1851 cut-off events. For 25157/25157 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 10309 event pairs, 170 based on Foata normal form. 19/1869 useless extension candidates. Maximal degree in co-relation 14318. Up to 665 conditions per place. [2025-02-06 04:46:06,227 INFO L140 encePairwiseOnDemand]: 13/20 looper letters, 195 selfloop transitions, 154 changer transitions 3/353 dead transitions. [2025-02-06 04:46:06,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 353 transitions, 6622 flow [2025-02-06 04:46:06,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 04:46:06,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 04:46:06,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 99 transitions. [2025-02-06 04:46:06,232 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.495 [2025-02-06 04:46:06,232 INFO L175 Difference]: Start difference. First operand has 210 places, 314 transitions, 5570 flow. Second operand 10 states and 99 transitions. [2025-02-06 04:46:06,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 353 transitions, 6622 flow [2025-02-06 04:46:06,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 353 transitions, 6235 flow, removed 124 selfloop flow, removed 9 redundant places. [2025-02-06 04:46:06,470 INFO L231 Difference]: Finished difference. Result has 212 places, 315 transitions, 5629 flow [2025-02-06 04:46:06,470 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=5195, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5629, PETRI_PLACES=212, PETRI_TRANSITIONS=315} [2025-02-06 04:46:06,471 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 191 predicate places. [2025-02-06 04:46:06,474 INFO L471 AbstractCegarLoop]: Abstraction has has 212 places, 315 transitions, 5629 flow [2025-02-06 04:46:06,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:46:06,475 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:46:06,475 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:46:06,484 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-02-06 04:46:06,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:46:06,675 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:46:06,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:46:06,676 INFO L85 PathProgramCache]: Analyzing trace with hash 774865558, now seen corresponding path program 6 times [2025-02-06 04:46:06,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:46:06,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685459020] [2025-02-06 04:46:06,676 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 04:46:06,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:46:06,682 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 2 equivalence classes. [2025-02-06 04:46:06,693 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:46:06,693 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-06 04:46:06,694 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:46:06,811 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:46:06,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:46:06,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685459020] [2025-02-06 04:46:06,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685459020] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:46:06,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889865012] [2025-02-06 04:46:06,812 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 04:46:06,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:46:06,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:46:06,816 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:46:06,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-06 04:46:06,853 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 2 equivalence classes. [2025-02-06 04:46:06,885 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:46:06,885 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-06 04:46:06,885 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:46:06,886 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 04:46:06,887 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:46:06,909 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:46:06,910 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:46:06,966 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:46:06,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889865012] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:46:06,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:46:06,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 11 [2025-02-06 04:46:06,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313605987] [2025-02-06 04:46:06,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:46:06,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 04:46:06,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:46:06,967 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 04:46:06,967 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2025-02-06 04:46:06,968 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-06 04:46:06,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 315 transitions, 5629 flow. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:46:06,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:46:06,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-06 04:46:06,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:46:07,534 INFO L124 PetriNetUnfolderBase]: 1015/1835 cut-off events. [2025-02-06 04:46:07,534 INFO L125 PetriNetUnfolderBase]: For 26104/26104 co-relation queries the response was YES. [2025-02-06 04:46:07,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13985 conditions, 1835 events. 1015/1835 cut-off events. For 26104/26104 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 10247 event pairs, 55 based on Foata normal form. 2/1836 useless extension candidates. Maximal degree in co-relation 13903. Up to 479 conditions per place. [2025-02-06 04:46:07,548 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 317 selfloop transitions, 148 changer transitions 2/468 dead transitions. [2025-02-06 04:46:07,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 468 transitions, 8826 flow [2025-02-06 04:46:07,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-06 04:46:07,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-02-06 04:46:07,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 153 transitions. [2025-02-06 04:46:07,549 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45 [2025-02-06 04:46:07,549 INFO L175 Difference]: Start difference. First operand has 212 places, 315 transitions, 5629 flow. Second operand 17 states and 153 transitions. [2025-02-06 04:46:07,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 468 transitions, 8826 flow [2025-02-06 04:46:07,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 468 transitions, 8607 flow, removed 21 selfloop flow, removed 7 redundant places. [2025-02-06 04:46:07,641 INFO L231 Difference]: Finished difference. Result has 219 places, 321 transitions, 5857 flow [2025-02-06 04:46:07,642 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=5453, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=5857, PETRI_PLACES=219, PETRI_TRANSITIONS=321} [2025-02-06 04:46:07,642 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 198 predicate places. [2025-02-06 04:46:07,642 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 321 transitions, 5857 flow [2025-02-06 04:46:07,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:46:07,642 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:46:07,642 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:46:07,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-02-06 04:46:07,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:46:07,843 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:46:07,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:46:07,844 INFO L85 PathProgramCache]: Analyzing trace with hash -275041784, now seen corresponding path program 7 times [2025-02-06 04:46:07,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:46:07,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269844750] [2025-02-06 04:46:07,844 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 04:46:07,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:46:07,848 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 04:46:07,852 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:46:07,852 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:46:07,852 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:46:07,985 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:46:07,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:46:07,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269844750] [2025-02-06 04:46:07,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269844750] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:46:07,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149385342] [2025-02-06 04:46:07,986 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 04:46:07,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:46:07,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:46:07,991 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:46:07,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-02-06 04:46:08,035 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 04:46:08,057 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:46:08,058 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:46:08,058 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:46:08,059 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-06 04:46:08,059 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:46:08,137 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:46:08,137 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:46:08,260 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:46:08,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149385342] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:46:08,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:46:08,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 13 [2025-02-06 04:46:08,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480145071] [2025-02-06 04:46:08,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:46:08,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-06 04:46:08,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:46:08,261 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-06 04:46:08,261 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2025-02-06 04:46:08,261 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-06 04:46:08,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 321 transitions, 5857 flow. Second operand has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 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) [2025-02-06 04:46:08,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:46:08,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-06 04:46:08,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:46:08,964 INFO L124 PetriNetUnfolderBase]: 1190/2244 cut-off events. [2025-02-06 04:46:08,964 INFO L125 PetriNetUnfolderBase]: For 31511/31511 co-relation queries the response was YES. [2025-02-06 04:46:08,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16733 conditions, 2244 events. 1190/2244 cut-off events. For 31511/31511 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 13560 event pairs, 201 based on Foata normal form. 15/2258 useless extension candidates. Maximal degree in co-relation 16653. Up to 1141 conditions per place. [2025-02-06 04:46:08,980 INFO L140 encePairwiseOnDemand]: 13/20 looper letters, 278 selfloop transitions, 171 changer transitions 2/452 dead transitions. [2025-02-06 04:46:08,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 452 transitions, 8563 flow [2025-02-06 04:46:08,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-06 04:46:08,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-02-06 04:46:08,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 159 transitions. [2025-02-06 04:46:08,982 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4676470588235294 [2025-02-06 04:46:08,983 INFO L175 Difference]: Start difference. First operand has 219 places, 321 transitions, 5857 flow. Second operand 17 states and 159 transitions. [2025-02-06 04:46:08,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 452 transitions, 8563 flow [2025-02-06 04:46:09,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 452 transitions, 8361 flow, removed 27 selfloop flow, removed 9 redundant places. [2025-02-06 04:46:09,084 INFO L231 Difference]: Finished difference. Result has 234 places, 382 transitions, 7506 flow [2025-02-06 04:46:09,085 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=5692, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=7506, PETRI_PLACES=234, PETRI_TRANSITIONS=382} [2025-02-06 04:46:09,085 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 213 predicate places. [2025-02-06 04:46:09,085 INFO L471 AbstractCegarLoop]: Abstraction has has 234 places, 382 transitions, 7506 flow [2025-02-06 04:46:09,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 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) [2025-02-06 04:46:09,085 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:46:09,085 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:46:09,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-02-06 04:46:09,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:46:09,286 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:46:09,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:46:09,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1519568056, now seen corresponding path program 8 times [2025-02-06 04:46:09,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:46:09,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118335373] [2025-02-06 04:46:09,287 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:46:09,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:46:09,291 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-02-06 04:46:09,296 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:46:09,296 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:46:09,296 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:46:09,390 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:46:09,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:46:09,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118335373] [2025-02-06 04:46:09,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118335373] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:46:09,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150011723] [2025-02-06 04:46:09,390 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:46:09,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:46:09,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:46:09,394 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:46:09,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-02-06 04:46:09,434 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-02-06 04:46:09,491 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:46:09,492 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:46:09,492 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:46:09,493 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 04:46:09,493 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:46:09,527 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:46:09,527 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:46:09,595 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:46:09,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150011723] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:46:09,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:46:09,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 11 [2025-02-06 04:46:09,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713072239] [2025-02-06 04:46:09,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:46:09,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 04:46:09,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:46:09,596 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 04:46:09,596 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-02-06 04:46:09,596 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-06 04:46:09,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 382 transitions, 7506 flow. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 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) [2025-02-06 04:46:09,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:46:09,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-06 04:46:09,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:46:10,470 INFO L124 PetriNetUnfolderBase]: 1183/2218 cut-off events. [2025-02-06 04:46:10,471 INFO L125 PetriNetUnfolderBase]: For 37151/37151 co-relation queries the response was YES. [2025-02-06 04:46:10,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17840 conditions, 2218 events. 1183/2218 cut-off events. For 37151/37151 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 13297 event pairs, 218 based on Foata normal form. 2/2219 useless extension candidates. Maximal degree in co-relation 17753. Up to 923 conditions per place. [2025-02-06 04:46:10,487 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 309 selfloop transitions, 122 changer transitions 2/434 dead transitions. [2025-02-06 04:46:10,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 434 transitions, 9054 flow [2025-02-06 04:46:10,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 04:46:10,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-02-06 04:46:10,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 101 transitions. [2025-02-06 04:46:10,488 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42083333333333334 [2025-02-06 04:46:10,488 INFO L175 Difference]: Start difference. First operand has 234 places, 382 transitions, 7506 flow. Second operand 12 states and 101 transitions. [2025-02-06 04:46:10,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 434 transitions, 9054 flow [2025-02-06 04:46:10,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 434 transitions, 8874 flow, removed 69 selfloop flow, removed 7 redundant places. [2025-02-06 04:46:10,608 INFO L231 Difference]: Finished difference. Result has 238 places, 381 transitions, 7560 flow [2025-02-06 04:46:10,608 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=7310, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7560, PETRI_PLACES=238, PETRI_TRANSITIONS=381} [2025-02-06 04:46:10,609 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 217 predicate places. [2025-02-06 04:46:10,609 INFO L471 AbstractCegarLoop]: Abstraction has has 238 places, 381 transitions, 7560 flow [2025-02-06 04:46:10,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 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) [2025-02-06 04:46:10,609 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:46:10,609 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:46:10,615 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-02-06 04:46:10,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:46:10,810 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:46:10,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:46:10,810 INFO L85 PathProgramCache]: Analyzing trace with hash -2057622854, now seen corresponding path program 9 times [2025-02-06 04:46:10,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:46:10,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803089290] [2025-02-06 04:46:10,811 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:46:10,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:46:10,814 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-02-06 04:46:10,819 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:46:10,819 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:46:10,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:46:10,942 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:46:10,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:46:10,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803089290] [2025-02-06 04:46:10,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803089290] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:46:10,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492065911] [2025-02-06 04:46:10,942 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:46:10,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:46:10,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:46:10,947 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:46:10,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-02-06 04:46:11,002 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-02-06 04:46:11,046 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:46:11,046 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:46:11,046 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:46:11,049 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-06 04:46:11,050 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:46:11,191 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:46:11,191 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:46:11,400 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:46:11,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492065911] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:46:11,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:46:11,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2025-02-06 04:46:11,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437400291] [2025-02-06 04:46:11,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:46:11,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-06 04:46:11,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:46:11,401 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-06 04:46:11,402 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2025-02-06 04:46:11,402 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-06 04:46:11,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 381 transitions, 7560 flow. Second operand has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 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) [2025-02-06 04:46:11,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:46:11,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-06 04:46:11,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:46:12,078 INFO L124 PetriNetUnfolderBase]: 1234/2368 cut-off events. [2025-02-06 04:46:12,079 INFO L125 PetriNetUnfolderBase]: For 38828/38828 co-relation queries the response was YES. [2025-02-06 04:46:12,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18930 conditions, 2368 events. 1234/2368 cut-off events. For 38828/38828 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 14818 event pairs, 247 based on Foata normal form. 15/2382 useless extension candidates. Maximal degree in co-relation 18844. Up to 1452 conditions per place. [2025-02-06 04:46:12,097 INFO L140 encePairwiseOnDemand]: 13/20 looper letters, 310 selfloop transitions, 160 changer transitions 2/473 dead transitions. [2025-02-06 04:46:12,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 473 transitions, 9648 flow [2025-02-06 04:46:12,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-06 04:46:12,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-02-06 04:46:12,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 159 transitions. [2025-02-06 04:46:12,099 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2025-02-06 04:46:12,099 INFO L175 Difference]: Start difference. First operand has 238 places, 381 transitions, 7560 flow. Second operand 18 states and 159 transitions. [2025-02-06 04:46:12,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 473 transitions, 9648 flow [2025-02-06 04:46:12,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 473 transitions, 9498 flow, removed 18 selfloop flow, removed 8 redundant places. [2025-02-06 04:46:12,266 INFO L231 Difference]: Finished difference. Result has 254 places, 409 transitions, 8540 flow [2025-02-06 04:46:12,266 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=7393, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=8540, PETRI_PLACES=254, PETRI_TRANSITIONS=409} [2025-02-06 04:46:12,267 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 233 predicate places. [2025-02-06 04:46:12,267 INFO L471 AbstractCegarLoop]: Abstraction has has 254 places, 409 transitions, 8540 flow [2025-02-06 04:46:12,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 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) [2025-02-06 04:46:12,267 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:46:12,267 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:46:12,273 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-02-06 04:46:12,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:46:12,471 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:46:12,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:46:12,471 INFO L85 PathProgramCache]: Analyzing trace with hash -127115660, now seen corresponding path program 10 times [2025-02-06 04:46:12,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:46:12,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116559594] [2025-02-06 04:46:12,472 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:46:12,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:46:12,476 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-02-06 04:46:12,484 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:46:12,485 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:46:12,485 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:46:12,568 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:46:12,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:46:12,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116559594] [2025-02-06 04:46:12,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116559594] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:46:12,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6591379] [2025-02-06 04:46:12,569 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:46:12,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:46:12,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:46:12,571 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:46:12,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-02-06 04:46:12,611 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-02-06 04:46:12,632 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:46:12,633 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:46:12,633 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:46:12,633 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 04:46:12,634 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:46:12,661 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:46:12,661 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:46:12,716 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:46:12,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6591379] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:46:12,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:46:12,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 12 [2025-02-06 04:46:12,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902167155] [2025-02-06 04:46:12,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:46:12,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 04:46:12,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:46:12,717 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 04:46:12,717 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2025-02-06 04:46:12,717 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-06 04:46:12,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 409 transitions, 8540 flow. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 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) [2025-02-06 04:46:12,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:46:12,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-06 04:46:12,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:46:13,224 INFO L124 PetriNetUnfolderBase]: 1221/2328 cut-off events. [2025-02-06 04:46:13,225 INFO L125 PetriNetUnfolderBase]: For 42374/42374 co-relation queries the response was YES. [2025-02-06 04:46:13,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19813 conditions, 2328 events. 1221/2328 cut-off events. For 42374/42374 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 14376 event pairs, 250 based on Foata normal form. 6/2333 useless extension candidates. Maximal degree in co-relation 19723. Up to 1190 conditions per place. [2025-02-06 04:46:13,243 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 350 selfloop transitions, 91 changer transitions 7/449 dead transitions. [2025-02-06 04:46:13,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 449 transitions, 9974 flow [2025-02-06 04:46:13,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 04:46:13,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 04:46:13,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 71 transitions. [2025-02-06 04:46:13,245 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39444444444444443 [2025-02-06 04:46:13,245 INFO L175 Difference]: Start difference. First operand has 254 places, 409 transitions, 8540 flow. Second operand 9 states and 71 transitions. [2025-02-06 04:46:13,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 449 transitions, 9974 flow [2025-02-06 04:46:13,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 449 transitions, 9775 flow, removed 40 selfloop flow, removed 6 redundant places. [2025-02-06 04:46:13,397 INFO L231 Difference]: Finished difference. Result has 257 places, 403 transitions, 8373 flow [2025-02-06 04:46:13,397 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=8307, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8373, PETRI_PLACES=257, PETRI_TRANSITIONS=403} [2025-02-06 04:46:13,397 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 236 predicate places. [2025-02-06 04:46:13,397 INFO L471 AbstractCegarLoop]: Abstraction has has 257 places, 403 transitions, 8373 flow [2025-02-06 04:46:13,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 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) [2025-02-06 04:46:13,398 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:46:13,398 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:46:13,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2025-02-06 04:46:13,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:46:13,599 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:46:13,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:46:13,600 INFO L85 PathProgramCache]: Analyzing trace with hash 2057423634, now seen corresponding path program 11 times [2025-02-06 04:46:13,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:46:13,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931340260] [2025-02-06 04:46:13,600 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:46:13,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:46:13,605 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-02-06 04:46:13,614 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:46:13,614 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:46:13,614 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:46:13,667 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:46:13,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:46:13,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931340260] [2025-02-06 04:46:13,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931340260] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:46:13,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518697221] [2025-02-06 04:46:13,668 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:46:13,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:46:13,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:46:13,674 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:46:13,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-02-06 04:46:13,721 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-02-06 04:46:13,755 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:46:13,755 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:46:13,755 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:46:13,757 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 04:46:13,757 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:46:13,816 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:46:13,816 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:46:13,890 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:46:13,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518697221] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:46:13,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:46:13,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2025-02-06 04:46:13,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041193610] [2025-02-06 04:46:13,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:46:13,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 04:46:13,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:46:13,892 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 04:46:13,893 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2025-02-06 04:46:13,893 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-06 04:46:13,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 403 transitions, 8373 flow. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:46:13,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:46:13,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-06 04:46:13,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:46:14,467 INFO L124 PetriNetUnfolderBase]: 1216/2308 cut-off events. [2025-02-06 04:46:14,468 INFO L125 PetriNetUnfolderBase]: For 43832/43832 co-relation queries the response was YES. [2025-02-06 04:46:14,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19812 conditions, 2308 events. 1216/2308 cut-off events. For 43832/43832 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 14126 event pairs, 250 based on Foata normal form. 2/2309 useless extension candidates. Maximal degree in co-relation 19721. Up to 1193 conditions per place. [2025-02-06 04:46:14,486 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 350 selfloop transitions, 98 changer transitions 2/451 dead transitions. [2025-02-06 04:46:14,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 451 transitions, 9851 flow [2025-02-06 04:46:14,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 04:46:14,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-06 04:46:14,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 109 transitions. [2025-02-06 04:46:14,487 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36333333333333334 [2025-02-06 04:46:14,487 INFO L175 Difference]: Start difference. First operand has 257 places, 403 transitions, 8373 flow. Second operand 15 states and 109 transitions. [2025-02-06 04:46:14,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 451 transitions, 9851 flow [2025-02-06 04:46:14,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 451 transitions, 9786 flow, removed 8 selfloop flow, removed 5 redundant places. [2025-02-06 04:46:14,637 INFO L231 Difference]: Finished difference. Result has 260 places, 401 transitions, 8463 flow [2025-02-06 04:46:14,637 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=8268, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=8463, PETRI_PLACES=260, PETRI_TRANSITIONS=401} [2025-02-06 04:46:14,637 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 239 predicate places. [2025-02-06 04:46:14,638 INFO L471 AbstractCegarLoop]: Abstraction has has 260 places, 401 transitions, 8463 flow [2025-02-06 04:46:14,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:46:14,638 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:46:14,638 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:46:14,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2025-02-06 04:46:14,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2025-02-06 04:46:14,842 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:46:14,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:46:14,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1030384068, now seen corresponding path program 3 times [2025-02-06 04:46:14,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:46:14,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543829471] [2025-02-06 04:46:14,843 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:46:14,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:46:14,851 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-02-06 04:46:14,866 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:46:14,866 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:46:14,866 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:46:15,011 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:46:15,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:46:15,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543829471] [2025-02-06 04:46:15,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543829471] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:46:15,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718096075] [2025-02-06 04:46:15,011 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:46:15,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:46:15,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:46:15,013 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:46:15,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-02-06 04:46:15,058 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-02-06 04:46:15,093 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:46:15,093 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:46:15,093 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:46:15,094 INFO L256 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 04:46:15,095 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:46:15,150 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:46:15,150 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:46:15,310 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:46:15,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718096075] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:46:15,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:46:15,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 15 [2025-02-06 04:46:15,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878974394] [2025-02-06 04:46:15,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:46:15,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-06 04:46:15,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:46:15,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-06 04:46:15,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2025-02-06 04:46:15,313 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-06 04:46:15,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 401 transitions, 8463 flow. Second operand has 15 states, 15 states have (on average 5.2) internal successors, (78), 15 states have internal predecessors, (78), 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) [2025-02-06 04:46:15,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:46:15,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-06 04:46:15,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:46:19,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-02-06 04:46:23,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-02-06 04:46:26,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-02-06 04:46:30,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-02-06 04:46:31,117 INFO L124 PetriNetUnfolderBase]: 1506/2872 cut-off events. [2025-02-06 04:46:31,118 INFO L125 PetriNetUnfolderBase]: For 59805/59805 co-relation queries the response was YES. [2025-02-06 04:46:31,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25160 conditions, 2872 events. 1506/2872 cut-off events. For 59805/59805 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 18496 event pairs, 118 based on Foata normal form. 12/2883 useless extension candidates. Maximal degree in co-relation 25071. Up to 774 conditions per place. [2025-02-06 04:46:31,143 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 349 selfloop transitions, 271 changer transitions 10/631 dead transitions. [2025-02-06 04:46:31,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 631 transitions, 13687 flow [2025-02-06 04:46:31,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-02-06 04:46:31,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2025-02-06 04:46:31,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 205 transitions. [2025-02-06 04:46:31,145 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41 [2025-02-06 04:46:31,145 INFO L175 Difference]: Start difference. First operand has 260 places, 401 transitions, 8463 flow. Second operand 25 states and 205 transitions. [2025-02-06 04:46:31,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 631 transitions, 13687 flow [2025-02-06 04:46:31,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 631 transitions, 13252 flow, removed 81 selfloop flow, removed 14 redundant places. [2025-02-06 04:46:31,354 INFO L231 Difference]: Finished difference. Result has 275 places, 472 transitions, 10275 flow [2025-02-06 04:46:31,355 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=8033, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=10275, PETRI_PLACES=275, PETRI_TRANSITIONS=472} [2025-02-06 04:46:31,355 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 254 predicate places. [2025-02-06 04:46:31,355 INFO L471 AbstractCegarLoop]: Abstraction has has 275 places, 472 transitions, 10275 flow [2025-02-06 04:46:31,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.2) internal successors, (78), 15 states have internal predecessors, (78), 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) [2025-02-06 04:46:31,355 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:46:31,355 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:46:31,362 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-02-06 04:46:31,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-02-06 04:46:31,556 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:46:31,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:46:31,557 INFO L85 PathProgramCache]: Analyzing trace with hash 978017025, now seen corresponding path program 4 times [2025-02-06 04:46:31,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:46:31,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823069457] [2025-02-06 04:46:31,557 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:46:31,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:46:31,567 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-02-06 04:46:31,603 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:46:31,603 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:46:31,603 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:46:32,185 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:46:32,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:46:32,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823069457] [2025-02-06 04:46:32,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823069457] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:46:32,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128047024] [2025-02-06 04:46:32,186 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:46:32,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:46:32,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:46:32,188 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:46:32,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-02-06 04:46:32,232 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-02-06 04:46:32,247 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:46:32,247 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:46:32,247 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:46:32,248 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-02-06 04:46:32,250 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:46:32,445 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 04:46:32,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 22 [2025-02-06 04:46:32,449 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:46:32,449 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:46:32,732 INFO L349 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2025-02-06 04:46:32,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 74 [2025-02-06 04:46:32,792 INFO L349 Elim1Store]: treesize reduction 74, result has 29.5 percent of original size [2025-02-06 04:46:32,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 63 treesize of output 61 [2025-02-06 04:46:32,831 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:46:32,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128047024] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:46:32,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:46:32,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 8] total 25 [2025-02-06 04:46:32,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97939948] [2025-02-06 04:46:32,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:46:32,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-06 04:46:32,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:46:32,832 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-06 04:46:32,832 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2025-02-06 04:46:32,832 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-06 04:46:32,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 472 transitions, 10275 flow. Second operand has 26 states, 26 states have (on average 4.846153846153846) internal successors, (126), 26 states have internal predecessors, (126), 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) [2025-02-06 04:46:32,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:46:32,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-06 04:46:32,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand