./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/unroll-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d 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-5.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 624ca078114fa3c35bb1960efece3c50cba0d03b97522c4936fd5f6e5d783f29 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 01:21:28,527 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 01:21:28,595 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-08 01:21:28,603 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 01:21:28,605 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 01:21:28,635 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 01:21:28,636 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 01:21:28,636 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 01:21:28,637 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 01:21:28,637 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 01:21:28,638 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 01:21:28,638 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 01:21:28,639 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 01:21:28,639 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 01:21:28,639 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 01:21:28,639 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 01:21:28,640 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 01:21:28,640 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 01:21:28,640 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 01:21:28,640 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 01:21:28,640 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 01:21:28,640 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 01:21:28,640 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 01:21:28,641 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 01:21:28,641 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 01:21:28,641 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 01:21:28,641 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 01:21:28,641 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 01:21:28,641 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 01:21:28,641 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 01:21:28,641 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 01:21:28,641 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 01:21:28,642 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:21:28,642 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 01:21:28,642 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 01:21:28,643 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 01:21:28,643 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 01:21:28,643 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 01:21:28,643 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 01:21:28,643 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 01:21:28,643 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 01:21:28,643 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 01:21:28,643 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 01:21:28,643 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 -> 624ca078114fa3c35bb1960efece3c50cba0d03b97522c4936fd5f6e5d783f29 [2025-02-08 01:21:28,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 01:21:28,927 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 01:21:28,929 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 01:21:28,930 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 01:21:28,930 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 01:21:28,931 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/unroll-5.wvr.c [2025-02-08 01:21:30,217 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0789dd098/b1757d9d7fc7439a83850cdce3c0e72e/FLAGa78a94d0b [2025-02-08 01:21:30,484 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 01:21:30,485 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/unroll-5.wvr.c [2025-02-08 01:21:30,501 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0789dd098/b1757d9d7fc7439a83850cdce3c0e72e/FLAGa78a94d0b [2025-02-08 01:21:30,514 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0789dd098/b1757d9d7fc7439a83850cdce3c0e72e [2025-02-08 01:21:30,516 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 01:21:30,518 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 01:21:30,519 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 01:21:30,519 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 01:21:30,523 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 01:21:30,524 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:21:30" (1/1) ... [2025-02-08 01:21:30,525 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68fad818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:21:30, skipping insertion in model container [2025-02-08 01:21:30,525 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:21:30" (1/1) ... [2025-02-08 01:21:30,541 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 01:21:30,681 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-5.wvr.c[2670,2683] [2025-02-08 01:21:30,693 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:21:30,701 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 01:21:30,725 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-5.wvr.c[2670,2683] [2025-02-08 01:21:30,732 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:21:30,748 INFO L204 MainTranslator]: Completed translation [2025-02-08 01:21:30,750 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:21:30 WrapperNode [2025-02-08 01:21:30,750 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 01:21:30,751 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 01:21:30,751 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 01:21:30,751 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 01:21:30,757 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:21:30" (1/1) ... [2025-02-08 01:21:30,763 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:21:30" (1/1) ... [2025-02-08 01:21:30,781 INFO L138 Inliner]: procedures = 23, calls = 28, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 148 [2025-02-08 01:21:30,781 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 01:21:30,782 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 01:21:30,782 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 01:21:30,782 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 01:21:30,789 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:21:30" (1/1) ... [2025-02-08 01:21:30,789 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:21:30" (1/1) ... [2025-02-08 01:21:30,791 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:21:30" (1/1) ... [2025-02-08 01:21:30,803 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 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]. [2025-02-08 01:21:30,803 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:21:30" (1/1) ... [2025-02-08 01:21:30,803 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:21:30" (1/1) ... [2025-02-08 01:21:30,809 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:21:30" (1/1) ... [2025-02-08 01:21:30,810 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:21:30" (1/1) ... [2025-02-08 01:21:30,811 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:21:30" (1/1) ... [2025-02-08 01:21:30,812 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:21:30" (1/1) ... [2025-02-08 01:21:30,814 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 01:21:30,815 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 01:21:30,815 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 01:21:30,815 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 01:21:30,816 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:21:30" (1/1) ... [2025-02-08 01:21:30,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:21:30,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:21:30,846 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) [2025-02-08 01:21:30,847 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 [2025-02-08 01:21:30,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 01:21:30,865 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 01:21:30,866 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 01:21:30,866 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 01:21:30,866 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 01:21:30,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 01:21:30,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 01:21:30,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 01:21:30,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 01:21:30,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 01:21:30,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 01:21:30,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 01:21:30,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 01:21:30,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 01:21:30,867 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 01:21:30,941 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 01:21:30,942 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 01:21:31,254 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 01:21:31,255 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 01:21:31,474 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 01:21:31,475 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 01:21:31,475 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:21:31 BoogieIcfgContainer [2025-02-08 01:21:31,475 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 01:21:31,477 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 01:21:31,477 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 01:21:31,481 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 01:21:31,482 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 01:21:30" (1/3) ... [2025-02-08 01:21:31,482 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dcdf2f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:21:31, skipping insertion in model container [2025-02-08 01:21:31,484 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:21:30" (2/3) ... [2025-02-08 01:21:31,484 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dcdf2f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:21:31, skipping insertion in model container [2025-02-08 01:21:31,484 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:21:31" (3/3) ... [2025-02-08 01:21:31,485 INFO L128 eAbstractionObserver]: Analyzing ICFG unroll-5.wvr.c [2025-02-08 01:21:31,499 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 01:21:31,500 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG unroll-5.wvr.c that has 3 procedures, 18 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2025-02-08 01:21:31,500 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 01:21:31,550 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-08 01:21:31,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 24 places, 20 transitions, 54 flow [2025-02-08 01:21:31,614 INFO L124 PetriNetUnfolderBase]: 3/18 cut-off events. [2025-02-08 01:21:31,619 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-08 01:21:31,622 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. [2025-02-08 01:21:31,622 INFO L82 GeneralOperation]: Start removeDead. Operand has 24 places, 20 transitions, 54 flow [2025-02-08 01:21:31,636 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 21 places, 17 transitions, 46 flow [2025-02-08 01:21:31,646 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 01:21:31,658 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;@4e8dda49, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 01:21:31,658 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-02-08 01:21:31,669 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 01:21:31,669 INFO L124 PetriNetUnfolderBase]: 3/16 cut-off events. [2025-02-08 01:21:31,669 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-08 01:21:31,670 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:21:31,670 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:21:31,670 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:21:31,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:21:31,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1091962374, now seen corresponding path program 1 times [2025-02-08 01:21:31,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:21:31,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880528387] [2025-02-08 01:21:31,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:21:31,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:21:31,759 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 01:21:31,803 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 01:21:31,804 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:21:31,804 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:21:32,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:21:32,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:21:32,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880528387] [2025-02-08 01:21:32,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880528387] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:21:32,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:21:32,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 01:21:32,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044225117] [2025-02-08 01:21:32,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:21:32,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 01:21:32,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:21:32,110 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 01:21:32,110 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 01:21:32,112 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-08 01:21:32,114 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) [2025-02-08 01:21:32,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:21:32,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-08 01:21:32,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:21:32,200 INFO L124 PetriNetUnfolderBase]: 38/71 cut-off events. [2025-02-08 01:21:32,201 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2025-02-08 01:21:32,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 71 events. 38/71 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 6. 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. [2025-02-08 01:21:32,204 INFO L140 encePairwiseOnDemand]: 17/20 looper letters, 15 selfloop transitions, 2 changer transitions 0/18 dead transitions. [2025-02-08 01:21:32,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 18 transitions, 82 flow [2025-02-08 01:21:32,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 01:21:32,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 01:21:32,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 27 transitions. [2025-02-08 01:21:32,217 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45 [2025-02-08 01:21:32,219 INFO L175 Difference]: Start difference. First operand has 21 places, 17 transitions, 46 flow. Second operand 3 states and 27 transitions. [2025-02-08 01:21:32,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 18 transitions, 82 flow [2025-02-08 01:21:32,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 18 transitions, 74 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-08 01:21:32,227 INFO L231 Difference]: Finished difference. Result has 20 places, 18 transitions, 50 flow [2025-02-08 01:21:32,229 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} [2025-02-08 01:21:32,234 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, -1 predicate places. [2025-02-08 01:21:32,234 INFO L471 AbstractCegarLoop]: Abstraction has has 20 places, 18 transitions, 50 flow [2025-02-08 01:21:32,234 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) [2025-02-08 01:21:32,234 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:21:32,234 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:21:32,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 01:21:32,235 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:21:32,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:21:32,235 INFO L85 PathProgramCache]: Analyzing trace with hash -80986605, now seen corresponding path program 1 times [2025-02-08 01:21:32,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:21:32,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784488468] [2025-02-08 01:21:32,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:21:32,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:21:32,255 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 01:21:32,291 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 01:21:32,292 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:21:32,292 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:21:32,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:21:32,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:21:32,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784488468] [2025-02-08 01:21:32,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784488468] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:21:32,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:21:32,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 01:21:32,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269716099] [2025-02-08 01:21:32,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:21:32,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 01:21:32,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:21:32,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 01:21:32,442 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 01:21:32,443 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-08 01:21:32,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 18 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2025-02-08 01:21:32,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:21:32,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-08 01:21:32,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:21:32,532 INFO L124 PetriNetUnfolderBase]: 69/126 cut-off events. [2025-02-08 01:21:32,532 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-08 01:21:32,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266 conditions, 126 events. 69/126 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 320 event pairs, 22 based on Foata normal form. 1/96 useless extension candidates. Maximal degree in co-relation 255. Up to 72 conditions per place. [2025-02-08 01:21:32,535 INFO L140 encePairwiseOnDemand]: 16/20 looper letters, 24 selfloop transitions, 3 changer transitions 1/29 dead transitions. [2025-02-08 01:21:32,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 29 transitions, 131 flow [2025-02-08 01:21:32,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 01:21:32,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 01:21:32,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2025-02-08 01:21:32,536 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6166666666666667 [2025-02-08 01:21:32,536 INFO L175 Difference]: Start difference. First operand has 20 places, 18 transitions, 50 flow. Second operand 3 states and 37 transitions. [2025-02-08 01:21:32,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 29 transitions, 131 flow [2025-02-08 01:21:32,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 29 transitions, 127 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-02-08 01:21:32,537 INFO L231 Difference]: Finished difference. Result has 22 places, 20 transitions, 65 flow [2025-02-08 01:21:32,538 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=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=22, PETRI_TRANSITIONS=20} [2025-02-08 01:21:32,538 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 1 predicate places. [2025-02-08 01:21:32,538 INFO L471 AbstractCegarLoop]: Abstraction has has 22 places, 20 transitions, 65 flow [2025-02-08 01:21:32,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2025-02-08 01:21:32,538 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:21:32,539 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:21:32,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 01:21:32,539 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:21:32,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:21:32,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1979081660, now seen corresponding path program 1 times [2025-02-08 01:21:32,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:21:32,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191252024] [2025-02-08 01:21:32,541 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:21:32,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:21:32,556 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 01:21:32,597 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 01:21:32,597 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:21:32,597 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:21:32,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:21:32,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:21:32,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191252024] [2025-02-08 01:21:32,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191252024] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:21:32,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:21:32,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:21:32,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651929650] [2025-02-08 01:21:32,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:21:32,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:21:32,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:21:32,826 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:21:32,826 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:21:32,826 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-08 01:21:32,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 20 transitions, 65 flow. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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) [2025-02-08 01:21:32,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:21:32,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-08 01:21:32,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:21:32,996 INFO L124 PetriNetUnfolderBase]: 78/155 cut-off events. [2025-02-08 01:21:32,996 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2025-02-08 01:21:32,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 155 events. 78/155 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 498 event pairs, 24 based on Foata normal form. 9/163 useless extension candidates. Maximal degree in co-relation 353. Up to 81 conditions per place. [2025-02-08 01:21:33,002 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 29 selfloop transitions, 4 changer transitions 7/41 dead transitions. [2025-02-08 01:21:33,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 41 transitions, 202 flow [2025-02-08 01:21:33,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:21:33,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:21:33,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 53 transitions. [2025-02-08 01:21:33,007 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.53 [2025-02-08 01:21:33,007 INFO L175 Difference]: Start difference. First operand has 22 places, 20 transitions, 65 flow. Second operand 5 states and 53 transitions. [2025-02-08 01:21:33,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 41 transitions, 202 flow [2025-02-08 01:21:33,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 41 transitions, 198 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 01:21:33,009 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 93 flow [2025-02-08 01:21:33,009 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=93, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2025-02-08 01:21:33,009 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 7 predicate places. [2025-02-08 01:21:33,009 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 93 flow [2025-02-08 01:21:33,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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) [2025-02-08 01:21:33,010 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:21:33,010 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:21:33,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 01:21:33,010 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:21:33,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:21:33,011 INFO L85 PathProgramCache]: Analyzing trace with hash 61668184, now seen corresponding path program 2 times [2025-02-08 01:21:33,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:21:33,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112289968] [2025-02-08 01:21:33,011 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:21:33,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:21:33,027 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-08 01:21:33,041 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 01:21:33,042 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:21:33,042 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:21:33,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:21:33,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:21:33,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112289968] [2025-02-08 01:21:33,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112289968] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:21:33,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620561856] [2025-02-08 01:21:33,201 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:21:33,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:21:33,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:21:33,207 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) [2025-02-08 01:21:33,208 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 [2025-02-08 01:21:33,266 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-08 01:21:33,297 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 01:21:33,297 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:21:33,297 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:21:33,299 INFO L256 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 01:21:33,302 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:21:33,351 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:21:33,352 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:21:33,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:21:33,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620561856] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-08 01:21:33,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-08 01:21:33,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 6 [2025-02-08 01:21:33,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593374264] [2025-02-08 01:21:33,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:21:33,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 01:21:33,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:21:33,416 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 01:21:33,416 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:21:33,416 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-08 01:21:33,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 93 flow. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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) [2025-02-08 01:21:33,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:21:33,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-08 01:21:33,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:21:33,557 INFO L124 PetriNetUnfolderBase]: 80/154 cut-off events. [2025-02-08 01:21:33,557 INFO L125 PetriNetUnfolderBase]: For 111/111 co-relation queries the response was YES. [2025-02-08 01:21:33,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 477 conditions, 154 events. 80/154 cut-off events. For 111/111 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 442 event pairs, 22 based on Foata normal form. 4/157 useless extension candidates. Maximal degree in co-relation 457. Up to 91 conditions per place. [2025-02-08 01:21:33,558 INFO L140 encePairwiseOnDemand]: 16/20 looper letters, 27 selfloop transitions, 4 changer transitions 3/35 dead transitions. [2025-02-08 01:21:33,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 35 transitions, 208 flow [2025-02-08 01:21:33,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 01:21:33,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 01:21:33,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 44 transitions. [2025-02-08 01:21:33,563 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.55 [2025-02-08 01:21:33,563 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 93 flow. Second operand 4 states and 44 transitions. [2025-02-08 01:21:33,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 35 transitions, 208 flow [2025-02-08 01:21:33,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 35 transitions, 195 flow, removed 4 selfloop flow, removed 2 redundant places. [2025-02-08 01:21:33,566 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 112 flow [2025-02-08 01:21:33,566 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=112, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2025-02-08 01:21:33,567 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 9 predicate places. [2025-02-08 01:21:33,567 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 112 flow [2025-02-08 01:21:33,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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) [2025-02-08 01:21:33,567 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:21:33,568 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:21:33,577 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 01:21:33,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:21:33,772 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:21:33,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:21:33,773 INFO L85 PathProgramCache]: Analyzing trace with hash -158771731, now seen corresponding path program 1 times [2025-02-08 01:21:33,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:21:33,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519914240] [2025-02-08 01:21:33,773 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:21:33,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:21:33,781 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 01:21:33,792 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 01:21:33,792 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:21:33,792 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:21:33,889 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:21:33,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:21:33,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519914240] [2025-02-08 01:21:33,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519914240] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:21:33,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:21:33,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:21:33,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416051863] [2025-02-08 01:21:33,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:21:33,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:21:33,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:21:33,891 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:21:33,891 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:21:33,891 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-08 01:21:33,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 112 flow. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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) [2025-02-08 01:21:33,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:21:33,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-08 01:21:33,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:21:34,027 INFO L124 PetriNetUnfolderBase]: 89/174 cut-off events. [2025-02-08 01:21:34,028 INFO L125 PetriNetUnfolderBase]: For 196/196 co-relation queries the response was YES. [2025-02-08 01:21:34,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 556 conditions, 174 events. 89/174 cut-off events. For 196/196 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 567 event pairs, 25 based on Foata normal form. 2/175 useless extension candidates. Maximal degree in co-relation 535. Up to 87 conditions per place. [2025-02-08 01:21:34,031 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 29 selfloop transitions, 9 changer transitions 9/48 dead transitions. [2025-02-08 01:21:34,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 48 transitions, 299 flow [2025-02-08 01:21:34,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 01:21:34,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 01:21:34,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 60 transitions. [2025-02-08 01:21:34,033 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-02-08 01:21:34,033 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 112 flow. Second operand 6 states and 60 transitions. [2025-02-08 01:21:34,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 48 transitions, 299 flow [2025-02-08 01:21:34,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 48 transitions, 294 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 01:21:34,037 INFO L231 Difference]: Finished difference. Result has 36 places, 27 transitions, 163 flow [2025-02-08 01:21:34,038 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=163, PETRI_PLACES=36, PETRI_TRANSITIONS=27} [2025-02-08 01:21:34,039 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 15 predicate places. [2025-02-08 01:21:34,039 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 27 transitions, 163 flow [2025-02-08 01:21:34,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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) [2025-02-08 01:21:34,040 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:21:34,040 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:21:34,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 01:21:34,040 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:21:34,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:21:34,040 INFO L85 PathProgramCache]: Analyzing trace with hash 939571386, now seen corresponding path program 3 times [2025-02-08 01:21:34,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:21:34,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31137864] [2025-02-08 01:21:34,041 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:21:34,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:21:34,050 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 2 equivalence classes. [2025-02-08 01:21:34,066 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 01:21:34,069 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 01:21:34,070 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:21:34,159 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:21:34,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:21:34,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31137864] [2025-02-08 01:21:34,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31137864] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:21:34,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100286460] [2025-02-08 01:21:34,159 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:21:34,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:21:34,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:21:34,162 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) [2025-02-08 01:21:34,165 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 [2025-02-08 01:21:34,213 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 2 equivalence classes. [2025-02-08 01:21:34,237 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 01:21:34,237 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 01:21:34,237 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:21:34,238 INFO L256 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 01:21:34,240 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:21:34,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:21:34,275 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:21:34,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:21:34,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100286460] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:21:34,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:21:34,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2025-02-08 01:21:34,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852750520] [2025-02-08 01:21:34,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:21:34,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 01:21:34,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:21:34,343 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 01:21:34,344 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-02-08 01:21:34,344 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-08 01:21:34,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 163 flow. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 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) [2025-02-08 01:21:34,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:21:34,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-08 01:21:34,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:21:34,524 INFO L124 PetriNetUnfolderBase]: 113/215 cut-off events. [2025-02-08 01:21:34,524 INFO L125 PetriNetUnfolderBase]: For 437/437 co-relation queries the response was YES. [2025-02-08 01:21:34,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 839 conditions, 215 events. 113/215 cut-off events. For 437/437 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 717 event pairs, 25 based on Foata normal form. 4/218 useless extension candidates. Maximal degree in co-relation 816. Up to 113 conditions per place. [2025-02-08 01:21:34,527 INFO L140 encePairwiseOnDemand]: 13/20 looper letters, 37 selfloop transitions, 19 changer transitions 5/62 dead transitions. [2025-02-08 01:21:34,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 62 transitions, 473 flow [2025-02-08 01:21:34,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:21:34,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:21:34,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 76 transitions. [2025-02-08 01:21:34,529 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.475 [2025-02-08 01:21:34,529 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 163 flow. Second operand 8 states and 76 transitions. [2025-02-08 01:21:34,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 62 transitions, 473 flow [2025-02-08 01:21:34,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 62 transitions, 442 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-02-08 01:21:34,533 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 301 flow [2025-02-08 01:21:34,534 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=301, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2025-02-08 01:21:34,534 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 23 predicate places. [2025-02-08 01:21:34,535 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 301 flow [2025-02-08 01:21:34,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 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) [2025-02-08 01:21:34,535 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:21:34,535 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:21:34,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-08 01:21:34,735 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 [2025-02-08 01:21:34,736 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:21:34,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:21:34,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1188959565, now seen corresponding path program 2 times [2025-02-08 01:21:34,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:21:34,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796295983] [2025-02-08 01:21:34,737 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:21:34,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:21:34,745 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-08 01:21:34,761 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 01:21:34,761 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:21:34,761 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:21:35,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:21:35,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:21:35,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796295983] [2025-02-08 01:21:35,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796295983] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:21:35,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098414653] [2025-02-08 01:21:35,054 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:21:35,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:21:35,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:21:35,059 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) [2025-02-08 01:21:35,060 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 [2025-02-08 01:21:35,114 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-08 01:21:35,137 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 01:21:35,137 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:21:35,137 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:21:35,138 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 01:21:35,141 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:21:35,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:21:35,204 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:21:35,267 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:21:35,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098414653] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-08 01:21:35,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-08 01:21:35,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 5] total 11 [2025-02-08 01:21:35,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133885040] [2025-02-08 01:21:35,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:21:35,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 01:21:35,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:21:35,271 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 01:21:35,271 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2025-02-08 01:21:35,271 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-08 01:21:35,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 301 flow. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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) [2025-02-08 01:21:35,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:21:35,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-08 01:21:35,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:21:35,402 INFO L124 PetriNetUnfolderBase]: 120/227 cut-off events. [2025-02-08 01:21:35,402 INFO L125 PetriNetUnfolderBase]: For 564/564 co-relation queries the response was YES. [2025-02-08 01:21:35,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1021 conditions, 227 events. 120/227 cut-off events. For 564/564 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 743 event pairs, 32 based on Foata normal form. 5/231 useless extension candidates. Maximal degree in co-relation 994. Up to 153 conditions per place. [2025-02-08 01:21:35,407 INFO L140 encePairwiseOnDemand]: 16/20 looper letters, 39 selfloop transitions, 9 changer transitions 3/52 dead transitions. [2025-02-08 01:21:35,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 52 transitions, 469 flow [2025-02-08 01:21:35,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 01:21:35,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 01:21:35,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 45 transitions. [2025-02-08 01:21:35,409 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5625 [2025-02-08 01:21:35,409 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 301 flow. Second operand 4 states and 45 transitions. [2025-02-08 01:21:35,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 52 transitions, 469 flow [2025-02-08 01:21:35,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 52 transitions, 457 flow, removed 6 selfloop flow, removed 0 redundant places. [2025-02-08 01:21:35,419 INFO L231 Difference]: Finished difference. Result has 49 places, 41 transitions, 342 flow [2025-02-08 01:21:35,419 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=342, PETRI_PLACES=49, PETRI_TRANSITIONS=41} [2025-02-08 01:21:35,421 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 28 predicate places. [2025-02-08 01:21:35,421 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 41 transitions, 342 flow [2025-02-08 01:21:35,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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) [2025-02-08 01:21:35,421 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:21:35,421 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:21:35,429 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-08 01:21:35,622 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 [2025-02-08 01:21:35,622 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:21:35,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:21:35,623 INFO L85 PathProgramCache]: Analyzing trace with hash -277800771, now seen corresponding path program 3 times [2025-02-08 01:21:35,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:21:35,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370768938] [2025-02-08 01:21:35,623 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:21:35,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:21:35,632 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 2 equivalence classes. [2025-02-08 01:21:35,648 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 01:21:35,649 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 01:21:35,649 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:21:35,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:21:35,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:21:35,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370768938] [2025-02-08 01:21:35,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370768938] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:21:35,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142946974] [2025-02-08 01:21:35,956 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:21:35,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:21:35,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:21:35,959 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) [2025-02-08 01:21:35,961 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 [2025-02-08 01:21:36,014 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 2 equivalence classes. [2025-02-08 01:21:36,035 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 01:21:36,035 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 01:21:36,035 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:21:36,036 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 01:21:36,037 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:21:36,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:21:36,095 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:21:36,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:21:36,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142946974] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:21:36,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:21:36,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 11 [2025-02-08 01:21:36,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478821562] [2025-02-08 01:21:36,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:21:36,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-08 01:21:36,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:21:36,151 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-08 01:21:36,151 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2025-02-08 01:21:36,151 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-08 01:21:36,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 41 transitions, 342 flow. Second operand has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 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) [2025-02-08 01:21:36,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:21:36,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-08 01:21:36,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:21:36,445 INFO L124 PetriNetUnfolderBase]: 134/251 cut-off events. [2025-02-08 01:21:36,445 INFO L125 PetriNetUnfolderBase]: For 850/850 co-relation queries the response was YES. [2025-02-08 01:21:36,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1182 conditions, 251 events. 134/251 cut-off events. For 850/850 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 882 event pairs, 27 based on Foata normal form. 5/255 useless extension candidates. Maximal degree in co-relation 1152. Up to 121 conditions per place. [2025-02-08 01:21:36,449 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 40 selfloop transitions, 23 changer transitions 0/64 dead transitions. [2025-02-08 01:21:36,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 64 transitions, 575 flow [2025-02-08 01:21:36,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 01:21:36,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 01:21:36,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 72 transitions. [2025-02-08 01:21:36,450 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45 [2025-02-08 01:21:36,450 INFO L175 Difference]: Start difference. First operand has 49 places, 41 transitions, 342 flow. Second operand 8 states and 72 transitions. [2025-02-08 01:21:36,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 64 transitions, 575 flow [2025-02-08 01:21:36,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 64 transitions, 564 flow, removed 2 selfloop flow, removed 1 redundant places. [2025-02-08 01:21:36,457 INFO L231 Difference]: Finished difference. Result has 57 places, 44 transitions, 417 flow [2025-02-08 01:21:36,457 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=417, PETRI_PLACES=57, PETRI_TRANSITIONS=44} [2025-02-08 01:21:36,459 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 36 predicate places. [2025-02-08 01:21:36,459 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 44 transitions, 417 flow [2025-02-08 01:21:36,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 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) [2025-02-08 01:21:36,459 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:21:36,459 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:21:36,467 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-08 01:21:36,659 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 [2025-02-08 01:21:36,660 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:21:36,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:21:36,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1377652998, now seen corresponding path program 4 times [2025-02-08 01:21:36,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:21:36,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984807433] [2025-02-08 01:21:36,661 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:21:36,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:21:36,668 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-02-08 01:21:36,680 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 01:21:36,680 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:21:36,680 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:21:36,751 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:21:36,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:21:36,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984807433] [2025-02-08 01:21:36,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984807433] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:21:36,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036741552] [2025-02-08 01:21:36,753 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:21:36,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:21:36,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:21:36,755 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) [2025-02-08 01:21:36,758 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 [2025-02-08 01:21:36,805 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-02-08 01:21:36,827 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 01:21:36,827 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:21:36,827 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:21:36,828 INFO L256 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 01:21:36,829 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:21:36,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:21:36,860 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:21:36,905 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:21:36,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036741552] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:21:36,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:21:36,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 9 [2025-02-08 01:21:36,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450248478] [2025-02-08 01:21:36,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:21:36,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-08 01:21:36,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:21:36,907 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-08 01:21:36,908 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2025-02-08 01:21:36,908 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-08 01:21:36,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 417 flow. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:21:36,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:21:36,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-08 01:21:36,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:21:37,052 INFO L124 PetriNetUnfolderBase]: 129/237 cut-off events. [2025-02-08 01:21:37,052 INFO L125 PetriNetUnfolderBase]: For 1090/1090 co-relation queries the response was YES. [2025-02-08 01:21:37,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1250 conditions, 237 events. 129/237 cut-off events. For 1090/1090 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 794 event pairs, 40 based on Foata normal form. 4/241 useless extension candidates. Maximal degree in co-relation 1217. Up to 159 conditions per place. [2025-02-08 01:21:37,056 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 32 selfloop transitions, 17 changer transitions 3/53 dead transitions. [2025-02-08 01:21:37,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 53 transitions, 565 flow [2025-02-08 01:21:37,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:21:37,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:21:37,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 49 transitions. [2025-02-08 01:21:37,057 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49 [2025-02-08 01:21:37,057 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 417 flow. Second operand 5 states and 49 transitions. [2025-02-08 01:21:37,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 53 transitions, 565 flow [2025-02-08 01:21:37,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 53 transitions, 523 flow, removed 4 selfloop flow, removed 4 redundant places. [2025-02-08 01:21:37,064 INFO L231 Difference]: Finished difference. Result has 57 places, 43 transitions, 398 flow [2025-02-08 01:21:37,065 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=398, PETRI_PLACES=57, PETRI_TRANSITIONS=43} [2025-02-08 01:21:37,066 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 36 predicate places. [2025-02-08 01:21:37,066 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 43 transitions, 398 flow [2025-02-08 01:21:37,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:21:37,066 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:21:37,067 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:21:37,074 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-08 01:21:37,271 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 [2025-02-08 01:21:37,271 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:21:37,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:21:37,274 INFO L85 PathProgramCache]: Analyzing trace with hash -878931277, now seen corresponding path program 4 times [2025-02-08 01:21:37,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:21:37,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669009417] [2025-02-08 01:21:37,274 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:21:37,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:21:37,280 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-02-08 01:21:37,292 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 01:21:37,292 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:21:37,292 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:21:37,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:21:37,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:21:37,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669009417] [2025-02-08 01:21:37,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669009417] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:21:37,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:21:37,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:21:37,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134737025] [2025-02-08 01:21:37,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:21:37,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:21:37,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:21:37,358 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:21:37,358 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:21:37,358 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-08 01:21:37,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 43 transitions, 398 flow. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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) [2025-02-08 01:21:37,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:21:37,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-08 01:21:37,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:21:37,484 INFO L124 PetriNetUnfolderBase]: 116/209 cut-off events. [2025-02-08 01:21:37,484 INFO L125 PetriNetUnfolderBase]: For 1049/1049 co-relation queries the response was YES. [2025-02-08 01:21:37,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1085 conditions, 209 events. 116/209 cut-off events. For 1049/1049 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 640 event pairs, 19 based on Foata normal form. 4/212 useless extension candidates. Maximal degree in co-relation 1053. Up to 104 conditions per place. [2025-02-08 01:21:37,486 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 44 selfloop transitions, 20 changer transitions 1/66 dead transitions. [2025-02-08 01:21:37,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 66 transitions, 681 flow [2025-02-08 01:21:37,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 01:21:37,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 01:21:37,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 57 transitions. [2025-02-08 01:21:37,488 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.475 [2025-02-08 01:21:37,488 INFO L175 Difference]: Start difference. First operand has 57 places, 43 transitions, 398 flow. Second operand 6 states and 57 transitions. [2025-02-08 01:21:37,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 66 transitions, 681 flow [2025-02-08 01:21:37,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 66 transitions, 627 flow, removed 11 selfloop flow, removed 4 redundant places. [2025-02-08 01:21:37,493 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 506 flow [2025-02-08 01:21:37,493 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=506, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2025-02-08 01:21:37,494 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 38 predicate places. [2025-02-08 01:21:37,494 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 506 flow [2025-02-08 01:21:37,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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) [2025-02-08 01:21:37,494 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:21:37,494 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:21:37,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-08 01:21:37,494 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:21:37,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:21:37,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1722939657, now seen corresponding path program 5 times [2025-02-08 01:21:37,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:21:37,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835030610] [2025-02-08 01:21:37,495 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:21:37,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:21:37,502 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-08 01:21:37,509 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 01:21:37,510 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:21:37,510 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:21:37,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:21:37,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:21:37,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835030610] [2025-02-08 01:21:37,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835030610] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:21:37,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:21:37,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 01:21:37,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308831215] [2025-02-08 01:21:37,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:21:37,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 01:21:37,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:21:37,562 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 01:21:37,562 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 01:21:37,562 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2025-02-08 01:21:37,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 52 transitions, 506 flow. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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) [2025-02-08 01:21:37,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:21:37,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2025-02-08 01:21:37,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:21:37,645 INFO L124 PetriNetUnfolderBase]: 111/196 cut-off events. [2025-02-08 01:21:37,645 INFO L125 PetriNetUnfolderBase]: For 1128/1128 co-relation queries the response was YES. [2025-02-08 01:21:37,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1103 conditions, 196 events. 111/196 cut-off events. For 1128/1128 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 578 event pairs, 29 based on Foata normal form. 5/200 useless extension candidates. Maximal degree in co-relation 1069. Up to 140 conditions per place. [2025-02-08 01:21:37,648 INFO L140 encePairwiseOnDemand]: 16/20 looper letters, 35 selfloop transitions, 19 changer transitions 1/56 dead transitions. [2025-02-08 01:21:37,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 56 transitions, 624 flow [2025-02-08 01:21:37,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 01:21:37,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 01:21:37,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 41 transitions. [2025-02-08 01:21:37,649 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5125 [2025-02-08 01:21:37,649 INFO L175 Difference]: Start difference. First operand has 59 places, 52 transitions, 506 flow. Second operand 4 states and 41 transitions. [2025-02-08 01:21:37,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 56 transitions, 624 flow [2025-02-08 01:21:37,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 56 transitions, 600 flow, removed 12 selfloop flow, removed 0 redundant places. [2025-02-08 01:21:37,654 INFO L231 Difference]: Finished difference. Result has 62 places, 49 transitions, 490 flow [2025-02-08 01:21:37,655 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=490, PETRI_PLACES=62, PETRI_TRANSITIONS=49} [2025-02-08 01:21:37,655 INFO L279 CegarLoopForPetriNet]: 21 programPoint places, 41 predicate places. [2025-02-08 01:21:37,655 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 49 transitions, 490 flow [2025-02-08 01:21:37,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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) [2025-02-08 01:21:37,655 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:21:37,655 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:21:37,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-08 01:21:37,655 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:21:37,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:21:37,656 INFO L85 PathProgramCache]: Analyzing trace with hash -99655844, now seen corresponding path program 1 times [2025-02-08 01:21:37,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:21:37,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682809729] [2025-02-08 01:21:37,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:21:37,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:21:37,665 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-08 01:21:37,677 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 01:21:37,679 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:21:37,679 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:21:37,864 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 01:21:37,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:21:37,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682809729] [2025-02-08 01:21:37,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682809729] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:21:37,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472776049] [2025-02-08 01:21:37,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:21:37,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:21:37,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:21:37,867 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) [2025-02-08 01:21:37,895 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 [2025-02-08 01:21:37,941 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-08 01:21:37,959 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 01:21:37,959 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:21:37,959 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:21:37,961 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-02-08 01:21:37,962 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:21:38,012 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 [2025-02-08 01:21:38,177 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:21:38,178 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:21:38,525 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 260 treesize of output 228 [2025-02-08 01:21:39,220 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 01:21:39,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 17 new quantified variables, introduced 45 case distinctions, treesize of input 3265 treesize of output 2301 [2025-02-08 01:22:39,910 WARN L672 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2025-02-08 01:22:58,188 WARN L672 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts.