./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-three-array-min.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 632917bb2a5e88c193ba7761220e89039206b92cb89d98172ae8e9ad69d27ca8 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 04:43:40,033 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 04:43:40,081 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 04:43:40,087 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 04:43:40,090 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 04:43:40,109 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 04:43:40,110 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 04:43:40,110 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 04:43:40,110 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 04:43:40,110 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 04:43:40,110 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 04:43:40,110 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 04:43:40,110 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 04:43:40,110 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 04:43:40,110 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 04:43:40,111 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 04:43:40,111 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 04:43:40,111 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 04:43:40,111 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 04:43:40,111 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 04:43:40,111 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 04:43:40,111 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 04:43:40,111 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 04:43:40,111 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 04:43:40,111 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 04:43:40,111 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 04:43:40,111 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 04:43:40,111 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 04:43:40,111 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 04:43:40,111 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 04:43:40,111 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 04:43:40,111 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 04:43:40,111 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:43:40,112 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 04:43:40,112 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 04:43:40,112 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 04:43:40,112 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 04:43:40,112 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 04:43:40,112 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 04:43:40,112 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 04:43:40,112 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 04:43:40,112 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 04:43:40,112 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 04:43:40,112 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 -> 632917bb2a5e88c193ba7761220e89039206b92cb89d98172ae8e9ad69d27ca8 [2025-02-06 04:43:40,323 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 04:43:40,331 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 04:43:40,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 04:43:40,334 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 04:43:40,335 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 04:43:40,336 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c [2025-02-06 04:43:41,471 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1fdf9a3bc/afb71da5c0f54e7c8267d45f07807997/FLAGcd4511706 [2025-02-06 04:43:41,696 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 04:43:41,698 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c [2025-02-06 04:43:41,705 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1fdf9a3bc/afb71da5c0f54e7c8267d45f07807997/FLAGcd4511706 [2025-02-06 04:43:41,724 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1fdf9a3bc/afb71da5c0f54e7c8267d45f07807997 [2025-02-06 04:43:41,726 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 04:43:41,727 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 04:43:41,729 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 04:43:41,729 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 04:43:41,733 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 04:43:41,734 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:43:41" (1/1) ... [2025-02-06 04:43:41,735 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b2559be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:43:41, skipping insertion in model container [2025-02-06 04:43:41,736 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:43:41" (1/1) ... [2025-02-06 04:43:41,750 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 04:43:41,883 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/popl20-three-array-min.wvr.c[2854,2867] [2025-02-06 04:43:41,895 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:43:41,903 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 04:43:41,919 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/popl20-three-array-min.wvr.c[2854,2867] [2025-02-06 04:43:41,922 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:43:41,934 INFO L204 MainTranslator]: Completed translation [2025-02-06 04:43:41,935 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:43:41 WrapperNode [2025-02-06 04:43:41,935 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 04:43:41,936 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 04:43:41,937 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 04:43:41,937 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 04:43:41,940 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:43:41" (1/1) ... [2025-02-06 04:43:41,946 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:43:41" (1/1) ... [2025-02-06 04:43:41,966 INFO L138 Inliner]: procedures = 25, calls = 42, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 210 [2025-02-06 04:43:41,966 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 04:43:41,966 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 04:43:41,966 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 04:43:41,966 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 04:43:41,971 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:43:41" (1/1) ... [2025-02-06 04:43:41,972 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:43:41" (1/1) ... [2025-02-06 04:43:41,974 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:43:41" (1/1) ... [2025-02-06 04:43:41,983 INFO L175 MemorySlicer]: Split 18 memory accesses to 2 slices as follows [2, 16]. 89 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2025-02-06 04:43:41,983 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:43:41" (1/1) ... [2025-02-06 04:43:41,983 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:43:41" (1/1) ... [2025-02-06 04:43:41,991 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:43:41" (1/1) ... [2025-02-06 04:43:41,996 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:43:41" (1/1) ... [2025-02-06 04:43:41,997 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:43:41" (1/1) ... [2025-02-06 04:43:41,998 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:43:41" (1/1) ... [2025-02-06 04:43:42,000 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 04:43:42,001 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 04:43:42,002 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 04:43:42,002 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 04:43:42,003 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:43:41" (1/1) ... [2025-02-06 04:43:42,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:43:42,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:43:42,030 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 04:43:42,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 04:43:42,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 04:43:42,053 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-06 04:43:42,053 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-06 04:43:42,053 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-06 04:43:42,053 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-06 04:43:42,053 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-06 04:43:42,053 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-06 04:43:42,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 04:43:42,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 04:43:42,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 04:43:42,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 04:43:42,054 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-06 04:43:42,054 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-06 04:43:42,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 04:43:42,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 04:43:42,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 04:43:42,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 04:43:42,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 04:43:42,055 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 04:43:42,126 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 04:43:42,127 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 04:43:42,490 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 04:43:42,491 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 04:43:42,760 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 04:43:42,761 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 04:43:42,761 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:43:42 BoogieIcfgContainer [2025-02-06 04:43:42,761 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 04:43:42,764 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 04:43:42,764 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 04:43:42,767 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 04:43:42,767 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 04:43:41" (1/3) ... [2025-02-06 04:43:42,768 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c5110f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:43:42, skipping insertion in model container [2025-02-06 04:43:42,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:43:41" (2/3) ... [2025-02-06 04:43:42,768 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c5110f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:43:42, skipping insertion in model container [2025-02-06 04:43:42,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:43:42" (3/3) ... [2025-02-06 04:43:42,769 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-three-array-min.wvr.c [2025-02-06 04:43:42,780 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 04:43:42,781 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-three-array-min.wvr.c that has 4 procedures, 33 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2025-02-06 04:43:42,781 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 04:43:42,827 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-02-06 04:43:42,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 39 transitions, 99 flow [2025-02-06 04:43:42,879 INFO L124 PetriNetUnfolderBase]: 7/36 cut-off events. [2025-02-06 04:43:42,881 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-06 04:43:42,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 36 events. 7/36 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2025-02-06 04:43:42,883 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 39 transitions, 99 flow [2025-02-06 04:43:42,889 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 35 transitions, 88 flow [2025-02-06 04:43:42,894 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 04:43:42,901 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;@5ed5cca8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 04:43:42,901 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-02-06 04:43:42,909 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 04:43:42,909 INFO L124 PetriNetUnfolderBase]: 7/34 cut-off events. [2025-02-06 04:43:42,909 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-06 04:43:42,909 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:43:42,910 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:43:42,910 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:43:42,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:43:42,919 INFO L85 PathProgramCache]: Analyzing trace with hash -911464602, now seen corresponding path program 1 times [2025-02-06 04:43:42,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:43:42,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180871802] [2025-02-06 04:43:42,924 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:43:42,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:43:42,980 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 04:43:43,029 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 04:43:43,029 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:43:43,029 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:43:43,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:43:43,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:43:43,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180871802] [2025-02-06 04:43:43,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180871802] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:43:43,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:43:43,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 04:43:43,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764866527] [2025-02-06 04:43:43,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:43:43,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 04:43:43,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:43:43,240 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 04:43:43,240 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 04:43:43,241 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2025-02-06 04:43:43,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 35 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:43:43,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:43:43,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2025-02-06 04:43:43,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:43:43,419 INFO L124 PetriNetUnfolderBase]: 431/694 cut-off events. [2025-02-06 04:43:43,419 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2025-02-06 04:43:43,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1348 conditions, 694 events. 431/694 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2694 event pairs, 284 based on Foata normal form. 0/610 useless extension candidates. Maximal degree in co-relation 1137. Up to 590 conditions per place. [2025-02-06 04:43:43,426 INFO L140 encePairwiseOnDemand]: 36/39 looper letters, 28 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2025-02-06 04:43:43,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 36 transitions, 150 flow [2025-02-06 04:43:43,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 04:43:43,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 04:43:43,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2025-02-06 04:43:43,438 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49572649572649574 [2025-02-06 04:43:43,439 INFO L175 Difference]: Start difference. First operand has 38 places, 35 transitions, 88 flow. Second operand 3 states and 58 transitions. [2025-02-06 04:43:43,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 36 transitions, 150 flow [2025-02-06 04:43:43,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 138 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-02-06 04:43:43,446 INFO L231 Difference]: Finished difference. Result has 35 places, 36 transitions, 88 flow [2025-02-06 04:43:43,448 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=35, PETRI_TRANSITIONS=36} [2025-02-06 04:43:43,450 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, -3 predicate places. [2025-02-06 04:43:43,451 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 36 transitions, 88 flow [2025-02-06 04:43:43,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:43:43,452 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:43:43,452 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:43:43,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 04:43:43,453 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:43:43,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:43:43,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1873097933, now seen corresponding path program 1 times [2025-02-06 04:43:43,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:43:43,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519295439] [2025-02-06 04:43:43,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:43:43,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:43:43,467 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-06 04:43:43,482 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 04:43:43,482 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:43:43,482 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:43:43,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:43:43,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:43:43,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519295439] [2025-02-06 04:43:43,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519295439] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:43:43,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:43:43,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 04:43:43,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481244298] [2025-02-06 04:43:43,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:43:43,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 04:43:43,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:43:43,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 04:43:43,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 04:43:43,620 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2025-02-06 04:43:43,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 36 transitions, 88 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:43:43,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:43:43,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2025-02-06 04:43:43,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:43:43,760 INFO L124 PetriNetUnfolderBase]: 431/696 cut-off events. [2025-02-06 04:43:43,761 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2025-02-06 04:43:43,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1313 conditions, 696 events. 431/696 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2691 event pairs, 284 based on Foata normal form. 0/612 useless extension candidates. Maximal degree in co-relation 1302. Up to 589 conditions per place. [2025-02-06 04:43:43,768 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 26 selfloop transitions, 6 changer transitions 0/38 dead transitions. [2025-02-06 04:43:43,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 38 transitions, 156 flow [2025-02-06 04:43:43,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 04:43:43,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 04:43:43,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 70 transitions. [2025-02-06 04:43:43,771 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44871794871794873 [2025-02-06 04:43:43,772 INFO L175 Difference]: Start difference. First operand has 35 places, 36 transitions, 88 flow. Second operand 4 states and 70 transitions. [2025-02-06 04:43:43,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 38 transitions, 156 flow [2025-02-06 04:43:43,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 38 transitions, 152 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-02-06 04:43:43,773 INFO L231 Difference]: Finished difference. Result has 38 places, 38 transitions, 112 flow [2025-02-06 04:43:43,774 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=112, PETRI_PLACES=38, PETRI_TRANSITIONS=38} [2025-02-06 04:43:43,774 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 0 predicate places. [2025-02-06 04:43:43,774 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 38 transitions, 112 flow [2025-02-06 04:43:43,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:43:43,775 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:43:43,775 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:43:43,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 04:43:43,775 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:43:43,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:43:43,776 INFO L85 PathProgramCache]: Analyzing trace with hash -278999820, now seen corresponding path program 1 times [2025-02-06 04:43:43,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:43:43,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997193400] [2025-02-06 04:43:43,777 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:43:43,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:43:43,790 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-06 04:43:43,807 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 04:43:43,808 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:43:43,808 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:43:43,923 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:43:43,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:43:43,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997193400] [2025-02-06 04:43:43,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997193400] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:43:43,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:43:43,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 04:43:43,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591469914] [2025-02-06 04:43:43,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:43:43,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 04:43:43,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:43:43,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 04:43:43,925 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 04:43:43,925 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2025-02-06 04:43:43,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 38 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:43:43,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:43:43,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2025-02-06 04:43:43,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:43:44,056 INFO L124 PetriNetUnfolderBase]: 663/1098 cut-off events. [2025-02-06 04:43:44,056 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2025-02-06 04:43:44,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2016 conditions, 1098 events. 663/1098 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 4591 event pairs, 226 based on Foata normal form. 1/964 useless extension candidates. Maximal degree in co-relation 1996. Up to 459 conditions per place. [2025-02-06 04:43:44,062 INFO L140 encePairwiseOnDemand]: 36/39 looper letters, 42 selfloop transitions, 2 changer transitions 2/52 dead transitions. [2025-02-06 04:43:44,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 52 transitions, 235 flow [2025-02-06 04:43:44,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 04:43:44,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 04:43:44,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2025-02-06 04:43:44,064 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6068376068376068 [2025-02-06 04:43:44,065 INFO L175 Difference]: Start difference. First operand has 38 places, 38 transitions, 112 flow. Second operand 3 states and 71 transitions. [2025-02-06 04:43:44,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 52 transitions, 235 flow [2025-02-06 04:43:44,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 52 transitions, 234 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 04:43:44,067 INFO L231 Difference]: Finished difference. Result has 40 places, 39 transitions, 123 flow [2025-02-06 04:43:44,067 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=123, PETRI_PLACES=40, PETRI_TRANSITIONS=39} [2025-02-06 04:43:44,068 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 2 predicate places. [2025-02-06 04:43:44,068 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 39 transitions, 123 flow [2025-02-06 04:43:44,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:43:44,069 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:43:44,069 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:43:44,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 04:43:44,069 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:43:44,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:43:44,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1970062281, now seen corresponding path program 1 times [2025-02-06 04:43:44,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:43:44,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692332617] [2025-02-06 04:43:44,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:43:44,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:43:44,082 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-02-06 04:43:44,096 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-02-06 04:43:44,096 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:43:44,096 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:43:44,221 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 04:43:44,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:43:44,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692332617] [2025-02-06 04:43:44,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692332617] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:43:44,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470728349] [2025-02-06 04:43:44,222 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:43:44,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:43:44,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:43:44,224 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:43:44,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 04:43:44,289 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-02-06 04:43:44,318 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-02-06 04:43:44,318 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:43:44,318 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:43:44,320 INFO L256 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 04:43:44,323 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:43:44,411 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 04:43:44,412 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:43:44,487 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 04:43:44,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470728349] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:43:44,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:43:44,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-02-06 04:43:44,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486638090] [2025-02-06 04:43:44,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:43:44,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 04:43:44,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:43:44,488 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 04:43:44,488 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2025-02-06 04:43:44,505 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2025-02-06 04:43:44,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 39 transitions, 123 flow. Second operand has 12 states, 12 states have (on average 11.083333333333334) internal successors, (133), 12 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:43:44,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:43:44,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2025-02-06 04:43:44,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:43:44,850 INFO L124 PetriNetUnfolderBase]: 1039/1608 cut-off events. [2025-02-06 04:43:44,850 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2025-02-06 04:43:44,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3214 conditions, 1608 events. 1039/1608 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 6430 event pairs, 506 based on Foata normal form. 0/1363 useless extension candidates. Maximal degree in co-relation 2432. Up to 877 conditions per place. [2025-02-06 04:43:44,861 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 37 selfloop transitions, 10 changer transitions 41/93 dead transitions. [2025-02-06 04:43:44,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 93 transitions, 457 flow [2025-02-06 04:43:44,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 04:43:44,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 04:43:44,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2025-02-06 04:43:44,863 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4307692307692308 [2025-02-06 04:43:44,863 INFO L175 Difference]: Start difference. First operand has 40 places, 39 transitions, 123 flow. Second operand 10 states and 168 transitions. [2025-02-06 04:43:44,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 93 transitions, 457 flow [2025-02-06 04:43:44,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 93 transitions, 455 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 04:43:44,865 INFO L231 Difference]: Finished difference. Result has 53 places, 42 transitions, 179 flow [2025-02-06 04:43:44,865 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=179, PETRI_PLACES=53, PETRI_TRANSITIONS=42} [2025-02-06 04:43:44,866 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 15 predicate places. [2025-02-06 04:43:44,866 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 42 transitions, 179 flow [2025-02-06 04:43:44,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.083333333333334) internal successors, (133), 12 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:43:44,866 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:43:44,866 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:43:44,878 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 04:43:45,067 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 [2025-02-06 04:43:45,067 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:43:45,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:43:45,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1354039615, now seen corresponding path program 2 times [2025-02-06 04:43:45,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:43:45,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968315065] [2025-02-06 04:43:45,069 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:43:45,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:43:45,084 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 33 statements into 2 equivalence classes. [2025-02-06 04:43:45,096 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 27 of 33 statements. [2025-02-06 04:43:45,096 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 04:43:45,096 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:43:45,169 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-02-06 04:43:45,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:43:45,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968315065] [2025-02-06 04:43:45,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968315065] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:43:45,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:43:45,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 04:43:45,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743773886] [2025-02-06 04:43:45,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:43:45,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:43:45,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:43:45,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:43:45,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 04:43:45,176 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2025-02-06 04:43:45,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 42 transitions, 179 flow. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:43:45,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:43:45,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2025-02-06 04:43:45,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:43:45,383 INFO L124 PetriNetUnfolderBase]: 1355/2057 cut-off events. [2025-02-06 04:43:45,383 INFO L125 PetriNetUnfolderBase]: For 342/342 co-relation queries the response was YES. [2025-02-06 04:43:45,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4394 conditions, 2057 events. 1355/2057 cut-off events. For 342/342 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 9551 event pairs, 550 based on Foata normal form. 13/1835 useless extension candidates. Maximal degree in co-relation 4358. Up to 1082 conditions per place. [2025-02-06 04:43:45,392 INFO L140 encePairwiseOnDemand]: 34/39 looper letters, 67 selfloop transitions, 3 changer transitions 14/89 dead transitions. [2025-02-06 04:43:45,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 89 transitions, 475 flow [2025-02-06 04:43:45,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:43:45,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:43:45,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2025-02-06 04:43:45,394 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5948717948717949 [2025-02-06 04:43:45,394 INFO L175 Difference]: Start difference. First operand has 53 places, 42 transitions, 179 flow. Second operand 5 states and 116 transitions. [2025-02-06 04:43:45,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 89 transitions, 475 flow [2025-02-06 04:43:45,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 89 transitions, 443 flow, removed 13 selfloop flow, removed 5 redundant places. [2025-02-06 04:43:45,399 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 177 flow [2025-02-06 04:43:45,399 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=177, PETRI_PLACES=50, PETRI_TRANSITIONS=44} [2025-02-06 04:43:45,402 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 12 predicate places. [2025-02-06 04:43:45,402 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 177 flow [2025-02-06 04:43:45,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:43:45,402 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:43:45,403 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:43:45,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 04:43:45,403 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:43:45,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:43:45,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1869270427, now seen corresponding path program 3 times [2025-02-06 04:43:45,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:43:45,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720006014] [2025-02-06 04:43:45,404 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:43:45,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:43:45,414 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 33 statements into 2 equivalence classes. [2025-02-06 04:43:45,428 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 33 of 33 statements. [2025-02-06 04:43:45,428 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:43:45,428 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:43:45,493 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-02-06 04:43:45,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:43:45,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720006014] [2025-02-06 04:43:45,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720006014] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:43:45,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:43:45,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 04:43:45,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9516429] [2025-02-06 04:43:45,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:43:45,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:43:45,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:43:45,495 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:43:45,495 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 04:43:45,501 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2025-02-06 04:43:45,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 177 flow. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:43:45,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:43:45,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2025-02-06 04:43:45,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:43:45,826 INFO L124 PetriNetUnfolderBase]: 2313/3640 cut-off events. [2025-02-06 04:43:45,826 INFO L125 PetriNetUnfolderBase]: For 1971/1971 co-relation queries the response was YES. [2025-02-06 04:43:45,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8689 conditions, 3640 events. 2313/3640 cut-off events. For 1971/1971 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 19301 event pairs, 992 based on Foata normal form. 14/3392 useless extension candidates. Maximal degree in co-relation 8656. Up to 1828 conditions per place. [2025-02-06 04:43:45,847 INFO L140 encePairwiseOnDemand]: 34/39 looper letters, 71 selfloop transitions, 3 changer transitions 13/92 dead transitions. [2025-02-06 04:43:45,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 92 transitions, 522 flow [2025-02-06 04:43:45,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:43:45,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:43:45,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2025-02-06 04:43:45,849 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5692307692307692 [2025-02-06 04:43:45,849 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 177 flow. Second operand 5 states and 111 transitions. [2025-02-06 04:43:45,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 92 transitions, 522 flow [2025-02-06 04:43:45,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 92 transitions, 500 flow, removed 7 selfloop flow, removed 2 redundant places. [2025-02-06 04:43:45,857 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 193 flow [2025-02-06 04:43:45,857 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=193, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2025-02-06 04:43:45,858 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 16 predicate places. [2025-02-06 04:43:45,858 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 193 flow [2025-02-06 04:43:45,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:43:45,859 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:43:45,859 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:43:45,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 04:43:45,859 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:43:45,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:43:45,860 INFO L85 PathProgramCache]: Analyzing trace with hash -2048763945, now seen corresponding path program 4 times [2025-02-06 04:43:45,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:43:45,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589403574] [2025-02-06 04:43:45,860 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:43:45,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:43:45,873 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 33 statements into 2 equivalence classes. [2025-02-06 04:43:45,875 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 21 of 33 statements. [2025-02-06 04:43:45,875 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-06 04:43:45,875 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:43:45,901 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-02-06 04:43:45,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:43:45,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589403574] [2025-02-06 04:43:45,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589403574] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:43:45,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:43:45,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 04:43:45,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978434011] [2025-02-06 04:43:45,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:43:45,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:43:45,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:43:45,903 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:43:45,904 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 04:43:45,907 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2025-02-06 04:43:45,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 193 flow. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:43:45,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:43:45,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2025-02-06 04:43:45,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:43:46,329 INFO L124 PetriNetUnfolderBase]: 3115/4808 cut-off events. [2025-02-06 04:43:46,330 INFO L125 PetriNetUnfolderBase]: For 3439/3439 co-relation queries the response was YES. [2025-02-06 04:43:46,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12266 conditions, 4808 events. 3115/4808 cut-off events. For 3439/3439 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 26064 event pairs, 890 based on Foata normal form. 46/4497 useless extension candidates. Maximal degree in co-relation 12231. Up to 2234 conditions per place. [2025-02-06 04:43:46,357 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 102 selfloop transitions, 16 changer transitions 0/123 dead transitions. [2025-02-06 04:43:46,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 123 transitions, 719 flow [2025-02-06 04:43:46,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 04:43:46,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 04:43:46,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2025-02-06 04:43:46,358 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5096153846153846 [2025-02-06 04:43:46,358 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 193 flow. Second operand 8 states and 159 transitions. [2025-02-06 04:43:46,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 123 transitions, 719 flow [2025-02-06 04:43:46,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 123 transitions, 699 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-02-06 04:43:46,371 INFO L231 Difference]: Finished difference. Result has 61 places, 59 transitions, 301 flow [2025-02-06 04:43:46,371 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=301, PETRI_PLACES=61, PETRI_TRANSITIONS=59} [2025-02-06 04:43:46,372 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 23 predicate places. [2025-02-06 04:43:46,372 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 59 transitions, 301 flow [2025-02-06 04:43:46,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:43:46,373 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:43:46,373 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:43:46,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 04:43:46,373 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:43:46,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:43:46,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1700677747, now seen corresponding path program 5 times [2025-02-06 04:43:46,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:43:46,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415488028] [2025-02-06 04:43:46,373 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:43:46,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:43:46,390 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 33 statements into 2 equivalence classes. [2025-02-06 04:43:46,420 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 33 of 33 statements. [2025-02-06 04:43:46,420 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:43:46,420 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:43:46,503 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 04:43:46,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:43:46,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415488028] [2025-02-06 04:43:46,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415488028] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:43:46,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013193694] [2025-02-06 04:43:46,503 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:43:46,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:43:46,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:43:46,505 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:43:46,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 04:43:46,559 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 33 statements into 2 equivalence classes. [2025-02-06 04:43:46,589 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 33 of 33 statements. [2025-02-06 04:43:46,589 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:43:46,589 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:43:46,590 INFO L256 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 04:43:46,592 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:43:46,662 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 04:43:46,663 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:43:46,707 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 04:43:46,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013193694] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 04:43:46,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 04:43:46,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2025-02-06 04:43:46,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661244394] [2025-02-06 04:43:46,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:43:46,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 04:43:46,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:43:46,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 04:43:46,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2025-02-06 04:43:46,714 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2025-02-06 04:43:46,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 59 transitions, 301 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:43:46,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:43:46,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2025-02-06 04:43:46,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:43:47,082 INFO L124 PetriNetUnfolderBase]: 3120/4852 cut-off events. [2025-02-06 04:43:47,083 INFO L125 PetriNetUnfolderBase]: For 7359/7433 co-relation queries the response was YES. [2025-02-06 04:43:47,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13514 conditions, 4852 events. 3120/4852 cut-off events. For 7359/7433 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 26504 event pairs, 777 based on Foata normal form. 156/4762 useless extension candidates. Maximal degree in co-relation 13477. Up to 2585 conditions per place. [2025-02-06 04:43:47,113 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 75 selfloop transitions, 7 changer transitions 0/87 dead transitions. [2025-02-06 04:43:47,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 87 transitions, 623 flow [2025-02-06 04:43:47,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 04:43:47,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 04:43:47,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 94 transitions. [2025-02-06 04:43:47,114 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4017094017094017 [2025-02-06 04:43:47,114 INFO L175 Difference]: Start difference. First operand has 61 places, 59 transitions, 301 flow. Second operand 6 states and 94 transitions. [2025-02-06 04:43:47,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 87 transitions, 623 flow [2025-02-06 04:43:47,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 87 transitions, 591 flow, removed 6 selfloop flow, removed 2 redundant places. [2025-02-06 04:43:47,125 INFO L231 Difference]: Finished difference. Result has 64 places, 59 transitions, 302 flow [2025-02-06 04:43:47,125 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=302, PETRI_PLACES=64, PETRI_TRANSITIONS=59} [2025-02-06 04:43:47,126 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 26 predicate places. [2025-02-06 04:43:47,126 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 59 transitions, 302 flow [2025-02-06 04:43:47,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:43:47,126 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:43:47,126 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:43:47,132 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 [2025-02-06 04:43:47,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:43:47,327 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:43:47,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:43:47,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1888596361, now seen corresponding path program 1 times [2025-02-06 04:43:47,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:43:47,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497093772] [2025-02-06 04:43:47,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:43:47,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:43:47,338 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-02-06 04:43:47,349 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-02-06 04:43:47,349 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:43:47,350 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:43:47,453 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 04:43:47,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:43:47,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497093772] [2025-02-06 04:43:47,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497093772] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:43:47,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642533743] [2025-02-06 04:43:47,453 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:43:47,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:43:47,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:43:47,456 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:43:47,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 04:43:47,518 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-02-06 04:43:47,547 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-02-06 04:43:47,547 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:43:47,547 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:43:47,549 INFO L256 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 04:43:47,550 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:43:47,599 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 04:43:47,599 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:43:47,651 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 04:43:47,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642533743] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 04:43:47,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 04:43:47,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2025-02-06 04:43:47,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068835487] [2025-02-06 04:43:47,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:43:47,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 04:43:47,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:43:47,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 04:43:47,652 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2025-02-06 04:43:47,660 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2025-02-06 04:43:47,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 59 transitions, 302 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:43:47,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:43:47,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2025-02-06 04:43:47,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:43:47,877 INFO L124 PetriNetUnfolderBase]: 1570/2484 cut-off events. [2025-02-06 04:43:47,877 INFO L125 PetriNetUnfolderBase]: For 4653/4677 co-relation queries the response was YES. [2025-02-06 04:43:47,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7322 conditions, 2484 events. 1570/2484 cut-off events. For 4653/4677 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 12305 event pairs, 605 based on Foata normal form. 216/2600 useless extension candidates. Maximal degree in co-relation 7281. Up to 1567 conditions per place. [2025-02-06 04:43:47,889 INFO L140 encePairwiseOnDemand]: 34/39 looper letters, 52 selfloop transitions, 9 changer transitions 0/68 dead transitions. [2025-02-06 04:43:47,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 68 transitions, 437 flow [2025-02-06 04:43:47,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 04:43:47,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 04:43:47,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 101 transitions. [2025-02-06 04:43:47,890 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43162393162393164 [2025-02-06 04:43:47,890 INFO L175 Difference]: Start difference. First operand has 64 places, 59 transitions, 302 flow. Second operand 6 states and 101 transitions. [2025-02-06 04:43:47,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 68 transitions, 437 flow [2025-02-06 04:43:47,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 68 transitions, 423 flow, removed 2 selfloop flow, removed 4 redundant places. [2025-02-06 04:43:47,897 INFO L231 Difference]: Finished difference. Result has 64 places, 54 transitions, 271 flow [2025-02-06 04:43:47,897 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=271, PETRI_PLACES=64, PETRI_TRANSITIONS=54} [2025-02-06 04:43:47,897 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 26 predicate places. [2025-02-06 04:43:47,897 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 54 transitions, 271 flow [2025-02-06 04:43:47,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:43:47,897 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:43:47,898 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:43:47,904 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-06 04:43:48,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:43:48,098 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:43:48,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:43:48,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1114096148, now seen corresponding path program 1 times [2025-02-06 04:43:48,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:43:48,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864104003] [2025-02-06 04:43:48,099 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:43:48,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:43:48,111 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-02-06 04:43:48,166 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-02-06 04:43:48,167 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:43:48,167 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:43:49,954 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 04:43:49,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:43:49,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864104003] [2025-02-06 04:43:49,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864104003] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:43:49,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104270020] [2025-02-06 04:43:49,955 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:43:49,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:43:49,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:43:49,957 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:43:49,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 04:43:50,019 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-02-06 04:43:50,048 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-02-06 04:43:50,048 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:43:50,049 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:43:50,050 INFO L256 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 41 conjuncts are in the unsatisfiable core [2025-02-06 04:43:50,053 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:43:50,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2025-02-06 04:43:50,095 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2025-02-06 04:43:50,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2025-02-06 04:43:50,128 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2025-02-06 04:43:50,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2025-02-06 04:43:50,394 INFO L349 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2025-02-06 04:43:50,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 55 treesize of output 55 [2025-02-06 04:43:57,510 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 04:43:57,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 17 select indices, 17 select index equivalence classes, 0 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 136 case distinctions, treesize of input 408 treesize of output 1830