./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-min-array-hom.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-more-min-array-hom.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 0224e82797c7b26c7800eaf85be5e5678e7961d21aa4e2312eda2860d261b33a --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 04:40:47,782 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 04:40:47,853 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 04:40:47,860 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 04:40:47,861 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 04:40:47,889 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 04:40:47,889 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 04:40:47,889 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 04:40:47,889 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 04:40:47,889 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 04:40:47,890 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 04:40:47,890 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 04:40:47,890 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 04:40:47,890 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 04:40:47,890 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 04:40:47,890 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 04:40:47,890 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 04:40:47,890 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 04:40:47,890 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 04:40:47,890 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 04:40:47,890 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 04:40:47,890 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 04:40:47,890 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 04:40:47,890 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 04:40:47,890 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 04:40:47,890 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 04:40:47,890 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 04:40:47,890 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 04:40:47,891 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 04:40:47,891 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 04:40:47,891 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 04:40:47,891 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 04:40:47,891 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:40:47,891 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 04:40:47,891 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 04:40:47,891 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 04:40:47,891 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 04:40:47,891 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 04:40:47,891 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 04:40:47,891 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 04:40:47,891 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 04:40:47,891 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 04:40:47,891 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 04:40:47,891 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 -> 0224e82797c7b26c7800eaf85be5e5678e7961d21aa4e2312eda2860d261b33a [2025-02-06 04:40:48,127 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 04:40:48,133 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 04:40:48,135 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 04:40:48,136 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 04:40:48,137 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 04:40:48,138 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c [2025-02-06 04:40:49,287 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/756c20e73/01f4b0e5d0f44769b31ef5fd1d73ee23/FLAG4189ad131 [2025-02-06 04:40:49,547 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 04:40:49,555 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c [2025-02-06 04:40:49,566 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/756c20e73/01f4b0e5d0f44769b31ef5fd1d73ee23/FLAG4189ad131 [2025-02-06 04:40:49,873 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/756c20e73/01f4b0e5d0f44769b31ef5fd1d73ee23 [2025-02-06 04:40:49,875 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 04:40:49,876 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 04:40:49,878 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 04:40:49,879 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 04:40:49,882 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 04:40:49,884 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:40:49" (1/1) ... [2025-02-06 04:40:49,885 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27c66aac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:40:49, skipping insertion in model container [2025-02-06 04:40:49,885 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:40:49" (1/1) ... [2025-02-06 04:40:49,899 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 04:40:50,018 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-more-min-array-hom.wvr.c[2625,2638] [2025-02-06 04:40:50,026 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:40:50,033 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 04:40:50,051 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-more-min-array-hom.wvr.c[2625,2638] [2025-02-06 04:40:50,054 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:40:50,065 INFO L204 MainTranslator]: Completed translation [2025-02-06 04:40:50,066 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:40:50 WrapperNode [2025-02-06 04:40:50,066 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 04:40:50,067 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 04:40:50,067 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 04:40:50,067 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 04:40:50,071 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:40:50" (1/1) ... [2025-02-06 04:40:50,077 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:40:50" (1/1) ... [2025-02-06 04:40:50,091 INFO L138 Inliner]: procedures = 23, calls = 28, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 84 [2025-02-06 04:40:50,091 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 04:40:50,092 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 04:40:50,092 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 04:40:50,092 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 04:40:50,098 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:40:50" (1/1) ... [2025-02-06 04:40:50,099 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:40:50" (1/1) ... [2025-02-06 04:40:50,101 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:40:50" (1/1) ... [2025-02-06 04:40:50,116 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-02-06 04:40:50,116 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:40:50" (1/1) ... [2025-02-06 04:40:50,116 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:40:50" (1/1) ... [2025-02-06 04:40:50,123 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:40:50" (1/1) ... [2025-02-06 04:40:50,124 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:40:50" (1/1) ... [2025-02-06 04:40:50,128 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:40:50" (1/1) ... [2025-02-06 04:40:50,129 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:40:50" (1/1) ... [2025-02-06 04:40:50,130 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 04:40:50,130 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 04:40:50,130 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 04:40:50,130 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 04:40:50,131 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:40:50" (1/1) ... [2025-02-06 04:40:50,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:40:50,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:40:50,154 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 04:40:50,160 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 04:40:50,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 04:40:50,175 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-06 04:40:50,175 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-06 04:40:50,175 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-06 04:40:50,175 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-06 04:40:50,175 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-06 04:40:50,176 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-06 04:40:50,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 04:40:50,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 04:40:50,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 04:40:50,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 04:40:50,176 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-06 04:40:50,176 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-06 04:40:50,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 04:40:50,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 04:40:50,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 04:40:50,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 04:40:50,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 04:40:50,177 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 04:40:50,250 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 04:40:50,253 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 04:40:50,453 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 04:40:50,454 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 04:40:50,581 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 04:40:50,581 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 04:40:50,582 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:40:50 BoogieIcfgContainer [2025-02-06 04:40:50,582 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 04:40:50,583 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 04:40:50,583 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 04:40:50,586 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 04:40:50,586 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 04:40:49" (1/3) ... [2025-02-06 04:40:50,587 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11686438 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:40:50, skipping insertion in model container [2025-02-06 04:40:50,587 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:40:50" (2/3) ... [2025-02-06 04:40:50,587 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11686438 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:40:50, skipping insertion in model container [2025-02-06 04:40:50,587 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:40:50" (3/3) ... [2025-02-06 04:40:50,588 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-min-array-hom.wvr.c [2025-02-06 04:40:50,596 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 04:40:50,597 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-min-array-hom.wvr.c that has 4 procedures, 30 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2025-02-06 04:40:50,597 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 04:40:50,641 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-02-06 04:40:50,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 33 transitions, 87 flow [2025-02-06 04:40:50,697 INFO L124 PetriNetUnfolderBase]: 4/30 cut-off events. [2025-02-06 04:40:50,703 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-06 04:40:50,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 30 events. 4/30 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 38 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2025-02-06 04:40:50,706 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 33 transitions, 87 flow [2025-02-06 04:40:50,711 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 29 transitions, 76 flow [2025-02-06 04:40:50,721 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 04:40:50,732 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;@b17d968, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 04:40:50,732 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-02-06 04:40:50,745 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 04:40:50,747 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2025-02-06 04:40:50,747 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-06 04:40:50,747 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:40:50,747 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:40:50,748 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 04:40:50,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:40:50,752 INFO L85 PathProgramCache]: Analyzing trace with hash 557860275, now seen corresponding path program 1 times [2025-02-06 04:40:50,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:40:50,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997447163] [2025-02-06 04:40:50,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:40:50,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:40:50,826 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 04:40:50,863 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:40:50,867 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:40:50,867 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:40:51,141 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 04:40:51,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:40:51,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997447163] [2025-02-06 04:40:51,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997447163] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:40:51,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:40:51,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 04:40:51,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468466017] [2025-02-06 04:40:51,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:40:51,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 04:40:51,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:40:51,162 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 04:40:51,162 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 04:40:51,163 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2025-02-06 04:40:51,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 04:40:51,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:40:51,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2025-02-06 04:40:51,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:40:51,300 INFO L124 PetriNetUnfolderBase]: 617/954 cut-off events. [2025-02-06 04:40:51,301 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2025-02-06 04:40:51,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1949 conditions, 954 events. 617/954 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3780 event pairs, 126 based on Foata normal form. 1/950 useless extension candidates. Maximal degree in co-relation 1715. Up to 677 conditions per place. [2025-02-06 04:40:51,311 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 37 selfloop transitions, 4 changer transitions 1/46 dead transitions. [2025-02-06 04:40:51,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 46 transitions, 209 flow [2025-02-06 04:40:51,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 04:40:51,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 04:40:51,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 64 transitions. [2025-02-06 04:40:51,322 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6464646464646465 [2025-02-06 04:40:51,323 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 76 flow. Second operand 3 states and 64 transitions. [2025-02-06 04:40:51,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 46 transitions, 209 flow [2025-02-06 04:40:51,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 46 transitions, 187 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-02-06 04:40:51,332 INFO L231 Difference]: Finished difference. Result has 32 places, 32 transitions, 90 flow [2025-02-06 04:40:51,334 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=32, PETRI_TRANSITIONS=32} [2025-02-06 04:40:51,336 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, -3 predicate places. [2025-02-06 04:40:51,337 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 32 transitions, 90 flow [2025-02-06 04:40:51,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 04:40:51,337 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:40:51,337 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 04:40:51,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 04:40:51,338 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 04:40:51,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:40:51,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1404449691, now seen corresponding path program 1 times [2025-02-06 04:40:51,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:40:51,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425954919] [2025-02-06 04:40:51,339 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:40:51,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:40:51,349 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-06 04:40:51,363 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 04:40:51,363 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:40:51,363 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:40:51,468 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 04:40:51,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:40:51,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425954919] [2025-02-06 04:40:51,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425954919] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:40:51,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:40:51,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 04:40:51,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71421134] [2025-02-06 04:40:51,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:40:51,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 04:40:51,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:40:51,471 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 04:40:51,471 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 04:40:51,476 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2025-02-06 04:40:51,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 32 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:40:51,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:40:51,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2025-02-06 04:40:51,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:40:51,622 INFO L124 PetriNetUnfolderBase]: 617/965 cut-off events. [2025-02-06 04:40:51,623 INFO L125 PetriNetUnfolderBase]: For 199/199 co-relation queries the response was YES. [2025-02-06 04:40:51,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2170 conditions, 965 events. 617/965 cut-off events. For 199/199 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4078 event pairs, 407 based on Foata normal form. 0/957 useless extension candidates. Maximal degree in co-relation 802. Up to 895 conditions per place. [2025-02-06 04:40:51,630 INFO L140 encePairwiseOnDemand]: 30/33 looper letters, 27 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2025-02-06 04:40:51,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 33 transitions, 150 flow [2025-02-06 04:40:51,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 04:40:51,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 04:40:51,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2025-02-06 04:40:51,632 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2025-02-06 04:40:51,633 INFO L175 Difference]: Start difference. First operand has 32 places, 32 transitions, 90 flow. Second operand 3 states and 48 transitions. [2025-02-06 04:40:51,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 33 transitions, 150 flow [2025-02-06 04:40:51,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 33 transitions, 146 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 04:40:51,635 INFO L231 Difference]: Finished difference. Result has 34 places, 33 transitions, 98 flow [2025-02-06 04:40:51,636 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=34, PETRI_TRANSITIONS=33} [2025-02-06 04:40:51,636 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2025-02-06 04:40:51,637 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 33 transitions, 98 flow [2025-02-06 04:40:51,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:40:51,637 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:40:51,637 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] [2025-02-06 04:40:51,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 04:40:51,637 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 04:40:51,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:40:51,639 INFO L85 PathProgramCache]: Analyzing trace with hash 779917777, now seen corresponding path program 1 times [2025-02-06 04:40:51,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:40:51,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748660267] [2025-02-06 04:40:51,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:40:51,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:40:51,646 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-06 04:40:51,652 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 04:40:51,653 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:40:51,653 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:40:51,715 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 04:40:51,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:40:51,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748660267] [2025-02-06 04:40:51,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748660267] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:40:51,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:40:51,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 04:40:51,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78122324] [2025-02-06 04:40:51,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:40:51,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 04:40:51,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:40:51,717 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 04:40:51,717 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 04:40:51,727 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2025-02-06 04:40:51,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 33 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:40:51,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:40:51,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2025-02-06 04:40:51,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:40:51,872 INFO L124 PetriNetUnfolderBase]: 790/1161 cut-off events. [2025-02-06 04:40:51,873 INFO L125 PetriNetUnfolderBase]: For 187/187 co-relation queries the response was YES. [2025-02-06 04:40:51,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2575 conditions, 1161 events. 790/1161 cut-off events. For 187/187 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4572 event pairs, 246 based on Foata normal form. 0/1118 useless extension candidates. Maximal degree in co-relation 2562. Up to 576 conditions per place. [2025-02-06 04:40:51,879 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 40 selfloop transitions, 4 changer transitions 0/47 dead transitions. [2025-02-06 04:40:51,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 47 transitions, 224 flow [2025-02-06 04:40:51,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 04:40:51,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 04:40:51,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 63 transitions. [2025-02-06 04:40:51,881 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2025-02-06 04:40:51,881 INFO L175 Difference]: Start difference. First operand has 34 places, 33 transitions, 98 flow. Second operand 4 states and 63 transitions. [2025-02-06 04:40:51,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 47 transitions, 224 flow [2025-02-06 04:40:51,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 47 transitions, 218 flow, removed 2 selfloop flow, removed 1 redundant places. [2025-02-06 04:40:51,883 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 113 flow [2025-02-06 04:40:51,883 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=113, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2025-02-06 04:40:51,883 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2025-02-06 04:40:51,883 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 113 flow [2025-02-06 04:40:51,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:40:51,885 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:40:51,885 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] [2025-02-06 04:40:51,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 04:40:51,885 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 04:40:51,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:40:51,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1043708507, now seen corresponding path program 1 times [2025-02-06 04:40:51,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:40:51,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467680721] [2025-02-06 04:40:51,886 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:40:51,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:40:51,896 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-06 04:40:51,902 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 04:40:51,905 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:40:51,906 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:40:52,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:40:52,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:40:52,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467680721] [2025-02-06 04:40:52,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467680721] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:40:52,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988281103] [2025-02-06 04:40:52,033 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:40:52,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:40:52,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:40:52,040 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 04:40:52,041 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 04:40:52,087 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-06 04:40:52,105 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 04:40:52,105 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:40:52,105 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:40:52,106 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 04:40:52,109 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:40:52,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:40:52,184 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:40:52,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:40:52,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988281103] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 04:40:52,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 04:40:52,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2025-02-06 04:40:52,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111851236] [2025-02-06 04:40:52,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:40:52,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:40:52,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:40:52,217 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:40:52,217 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-02-06 04:40:52,222 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2025-02-06 04:40:52,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 113 flow. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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 04:40:52,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:40:52,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2025-02-06 04:40:52,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:40:52,344 INFO L124 PetriNetUnfolderBase]: 855/1295 cut-off events. [2025-02-06 04:40:52,344 INFO L125 PetriNetUnfolderBase]: For 505/505 co-relation queries the response was YES. [2025-02-06 04:40:52,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3247 conditions, 1295 events. 855/1295 cut-off events. For 505/505 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5382 event pairs, 256 based on Foata normal form. 0/1230 useless extension candidates. Maximal degree in co-relation 3227. Up to 670 conditions per place. [2025-02-06 04:40:52,352 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 41 selfloop transitions, 5 changer transitions 0/50 dead transitions. [2025-02-06 04:40:52,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 50 transitions, 257 flow [2025-02-06 04:40:52,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:40:52,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:40:52,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 72 transitions. [2025-02-06 04:40:52,354 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43636363636363634 [2025-02-06 04:40:52,355 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 113 flow. Second operand 5 states and 72 transitions. [2025-02-06 04:40:52,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 50 transitions, 257 flow [2025-02-06 04:40:52,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 50 transitions, 251 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 04:40:52,359 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 132 flow [2025-02-06 04:40:52,359 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=132, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2025-02-06 04:40:52,360 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 7 predicate places. [2025-02-06 04:40:52,360 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 132 flow [2025-02-06 04:40:52,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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 04:40:52,360 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:40:52,360 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:40:52,375 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 04:40:52,560 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 04:40:52,561 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 04:40:52,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:40:52,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1212184845, now seen corresponding path program 1 times [2025-02-06 04:40:52,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:40:52,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399868996] [2025-02-06 04:40:52,561 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:40:52,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:40:52,570 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-06 04:40:52,591 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 04:40:52,591 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:40:52,592 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:40:53,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:40:53,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:40:53,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399868996] [2025-02-06 04:40:53,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399868996] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:40:53,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019573409] [2025-02-06 04:40:53,605 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:40:53,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:40:53,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:40:53,607 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 04:40:53,608 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 04:40:53,652 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-06 04:40:53,670 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 04:40:53,671 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:40:53,671 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:40:53,671 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-02-06 04:40:53,673 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:40:53,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-06 04:40:53,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 35 [2025-02-06 04:40:54,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:40:54,128 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:40:55,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 282 treesize of output 254 [2025-02-06 04:40:56,016 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 04:40:56,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 372 treesize of output 376 [2025-02-06 04:41:19,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 226 treesize of output 208 [2025-02-06 04:41:19,407 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 04:41:19,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 261 treesize of output 291 [2025-02-06 04:41:23,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:41:23,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019573409] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:41:23,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:41:23,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 24 [2025-02-06 04:41:23,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512564453] [2025-02-06 04:41:23,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:41:23,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-06 04:41:23,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:41:23,136 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-06 04:41:23,137 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2025-02-06 04:41:23,289 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2025-02-06 04:41:23,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 132 flow. Second operand has 25 states, 25 states have (on average 8.88) internal successors, (222), 25 states have internal predecessors, (222), 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 04:41:23,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:41:23,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2025-02-06 04:41:23,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:41:24,965 INFO L124 PetriNetUnfolderBase]: 1841/2761 cut-off events. [2025-02-06 04:41:24,966 INFO L125 PetriNetUnfolderBase]: For 1721/1721 co-relation queries the response was YES. [2025-02-06 04:41:24,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7669 conditions, 2761 events. 1841/2761 cut-off events. For 1721/1721 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 12694 event pairs, 106 based on Foata normal form. 1/2761 useless extension candidates. Maximal degree in co-relation 5614. Up to 1375 conditions per place. [2025-02-06 04:41:24,979 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 137 selfloop transitions, 57 changer transitions 1/199 dead transitions. [2025-02-06 04:41:24,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 199 transitions, 1067 flow [2025-02-06 04:41:24,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-06 04:41:24,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-02-06 04:41:24,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 321 transitions. [2025-02-06 04:41:24,985 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46320346320346323 [2025-02-06 04:41:24,985 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 132 flow. Second operand 21 states and 321 transitions. [2025-02-06 04:41:24,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 199 transitions, 1067 flow [2025-02-06 04:41:24,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 199 transitions, 1050 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 04:41:24,994 INFO L231 Difference]: Finished difference. Result has 64 places, 91 transitions, 543 flow [2025-02-06 04:41:24,995 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=543, PETRI_PLACES=64, PETRI_TRANSITIONS=91} [2025-02-06 04:41:24,995 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 29 predicate places. [2025-02-06 04:41:24,995 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 91 transitions, 543 flow [2025-02-06 04:41:24,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 8.88) internal successors, (222), 25 states have internal predecessors, (222), 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 04:41:24,996 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:41:24,996 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:41:25,003 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 04:41:25,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:41:25,197 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 04:41:25,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:41:25,197 INFO L85 PathProgramCache]: Analyzing trace with hash 886983781, now seen corresponding path program 2 times [2025-02-06 04:41:25,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:41:25,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786099360] [2025-02-06 04:41:25,200 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:41:25,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:41:25,210 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-02-06 04:41:25,239 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 04:41:25,239 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:41:25,239 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:25,710 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:41:25,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:41:25,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786099360] [2025-02-06 04:41:25,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786099360] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:41:25,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884544736] [2025-02-06 04:41:25,711 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:41:25,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:41:25,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:41:25,714 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 04:41:25,718 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 04:41:25,755 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-02-06 04:41:25,771 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 04:41:25,771 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:41:25,771 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:25,772 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-02-06 04:41:25,773 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:41:25,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-06 04:41:26,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 35 [2025-02-06 04:41:26,075 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:41:26,075 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:41:27,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 226 treesize of output 208 [2025-02-06 04:41:27,377 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 04:41:27,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 261 treesize of output 291 [2025-02-06 04:41:44,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 282 treesize of output 254 [2025-02-06 04:41:44,932 INFO L349 Elim1Store]: treesize reduction 80, result has 1.2 percent of original size [2025-02-06 04:41:44,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 372 treesize of output 1 [2025-02-06 04:41:44,972 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:41:44,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884544736] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:41:44,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:41:44,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 22 [2025-02-06 04:41:44,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090526800] [2025-02-06 04:41:44,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:41:44,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 04:41:44,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:41:44,977 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 04:41:44,977 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2025-02-06 04:41:45,125 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2025-02-06 04:41:45,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 91 transitions, 543 flow. Second operand has 23 states, 23 states have (on average 9.869565217391305) internal successors, (227), 23 states have internal predecessors, (227), 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 04:41:45,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:41:45,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2025-02-06 04:41:45,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:41:46,841 INFO L124 PetriNetUnfolderBase]: 2050/3333 cut-off events. [2025-02-06 04:41:46,842 INFO L125 PetriNetUnfolderBase]: For 4846/4846 co-relation queries the response was YES. [2025-02-06 04:41:46,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10794 conditions, 3333 events. 2050/3333 cut-off events. For 4846/4846 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 18090 event pairs, 124 based on Foata normal form. 3/3334 useless extension candidates. Maximal degree in co-relation 10232. Up to 1815 conditions per place. [2025-02-06 04:41:46,860 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 193 selfloop transitions, 121 changer transitions 2/322 dead transitions. [2025-02-06 04:41:46,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 322 transitions, 2167 flow [2025-02-06 04:41:46,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-02-06 04:41:46,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2025-02-06 04:41:46,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 474 transitions. [2025-02-06 04:41:46,862 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4633431085043988 [2025-02-06 04:41:46,862 INFO L175 Difference]: Start difference. First operand has 64 places, 91 transitions, 543 flow. Second operand 31 states and 474 transitions. [2025-02-06 04:41:46,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 322 transitions, 2167 flow [2025-02-06 04:41:46,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 322 transitions, 1959 flow, removed 77 selfloop flow, removed 3 redundant places. [2025-02-06 04:41:46,877 INFO L231 Difference]: Finished difference. Result has 105 places, 182 transitions, 1307 flow [2025-02-06 04:41:46,878 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1307, PETRI_PLACES=105, PETRI_TRANSITIONS=182} [2025-02-06 04:41:46,878 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 70 predicate places. [2025-02-06 04:41:46,878 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 182 transitions, 1307 flow [2025-02-06 04:41:46,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.869565217391305) internal successors, (227), 23 states have internal predecessors, (227), 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 04:41:46,879 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:41:46,879 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:41:46,885 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 04:41:47,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:41:47,080 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 04:41:47,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:41:47,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1745271629, now seen corresponding path program 3 times [2025-02-06 04:41:47,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:41:47,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612108601] [2025-02-06 04:41:47,081 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:41:47,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:41:47,089 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 2 equivalence classes. [2025-02-06 04:41:47,107 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 04:41:47,107 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:41:47,107 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:47,573 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:41:47,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:41:47,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612108601] [2025-02-06 04:41:47,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612108601] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:41:47,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638591276] [2025-02-06 04:41:47,573 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:41:47,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:41:47,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:41:47,577 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 04:41:47,582 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 04:41:47,621 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 2 equivalence classes. [2025-02-06 04:41:47,638 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 04:41:47,638 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:41:47,638 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:47,640 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-02-06 04:41:47,641 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:41:47,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-06 04:41:47,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 35 [2025-02-06 04:41:47,889 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:41:47,890 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:41:49,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 217 treesize of output 195 [2025-02-06 04:41:49,342 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 04:41:49,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 296 treesize of output 278 [2025-02-06 04:41:52,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 183 treesize of output 167 [2025-02-06 04:41:52,873 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 04:41:52,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 215 treesize of output 219 [2025-02-06 04:41:53,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 96 [2025-02-06 04:41:53,851 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-06 04:41:53,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 115 [2025-02-06 04:41:54,046 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:41:54,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638591276] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:41:54,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:41:54,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 22 [2025-02-06 04:41:54,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075723899] [2025-02-06 04:41:54,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:41:54,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 04:41:54,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:41:54,050 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 04:41:54,050 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2025-02-06 04:41:54,253 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2025-02-06 04:41:54,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 182 transitions, 1307 flow. Second operand has 23 states, 23 states have (on average 9.782608695652174) internal successors, (225), 23 states have internal predecessors, (225), 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 04:41:54,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:41:54,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2025-02-06 04:41:54,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:41:56,581 INFO L124 PetriNetUnfolderBase]: 3836/6209 cut-off events. [2025-02-06 04:41:56,581 INFO L125 PetriNetUnfolderBase]: For 16945/16974 co-relation queries the response was YES. [2025-02-06 04:41:56,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23989 conditions, 6209 events. 3836/6209 cut-off events. For 16945/16974 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 37651 event pairs, 285 based on Foata normal form. 29/6236 useless extension candidates. Maximal degree in co-relation 22851. Up to 2782 conditions per place. [2025-02-06 04:41:56,659 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 233 selfloop transitions, 247 changer transitions 2/488 dead transitions. [2025-02-06 04:41:56,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 488 transitions, 4097 flow [2025-02-06 04:41:56,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-02-06 04:41:56,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2025-02-06 04:41:56,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 523 transitions. [2025-02-06 04:41:56,663 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4661319073083779 [2025-02-06 04:41:56,663 INFO L175 Difference]: Start difference. First operand has 105 places, 182 transitions, 1307 flow. Second operand 34 states and 523 transitions. [2025-02-06 04:41:56,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 488 transitions, 4097 flow [2025-02-06 04:41:56,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 488 transitions, 3910 flow, removed 91 selfloop flow, removed 2 redundant places. [2025-02-06 04:41:56,701 INFO L231 Difference]: Finished difference. Result has 148 places, 329 transitions, 3031 flow [2025-02-06 04:41:56,701 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1222, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=3031, PETRI_PLACES=148, PETRI_TRANSITIONS=329} [2025-02-06 04:41:56,701 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 113 predicate places. [2025-02-06 04:41:56,701 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 329 transitions, 3031 flow [2025-02-06 04:41:56,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.782608695652174) internal successors, (225), 23 states have internal predecessors, (225), 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 04:41:56,702 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:41:56,702 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:41:56,708 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 04:41:56,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2025-02-06 04:41:56,902 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 04:41:56,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:41:56,903 INFO L85 PathProgramCache]: Analyzing trace with hash 417128933, now seen corresponding path program 4 times [2025-02-06 04:41:56,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:41:56,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300004779] [2025-02-06 04:41:56,903 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:41:56,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:41:56,908 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 26 statements into 2 equivalence classes. [2025-02-06 04:41:56,916 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 04:41:56,916 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:41:56,916 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:57,278 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 04:41:57,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:41:57,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300004779] [2025-02-06 04:41:57,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300004779] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:41:57,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:41:57,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 04:41:57,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595051361] [2025-02-06 04:41:57,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:41:57,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 04:41:57,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:41:57,279 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 04:41:57,280 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-02-06 04:41:57,309 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2025-02-06 04:41:57,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 329 transitions, 3031 flow. Second operand has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 11 states have internal predecessors, (89), 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 04:41:57,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:41:57,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2025-02-06 04:41:57,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:41:58,076 INFO L124 PetriNetUnfolderBase]: 5091/8120 cut-off events. [2025-02-06 04:41:58,077 INFO L125 PetriNetUnfolderBase]: For 31736/31768 co-relation queries the response was YES. [2025-02-06 04:41:58,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34897 conditions, 8120 events. 5091/8120 cut-off events. For 31736/31768 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 50738 event pairs, 1299 based on Foata normal form. 13/8130 useless extension candidates. Maximal degree in co-relation 33325. Up to 6980 conditions per place. [2025-02-06 04:41:58,208 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 309 selfloop transitions, 80 changer transitions 1/395 dead transitions. [2025-02-06 04:41:58,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 395 transitions, 4348 flow [2025-02-06 04:41:58,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 04:41:58,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 04:41:58,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2025-02-06 04:41:58,211 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39669421487603307 [2025-02-06 04:41:58,211 INFO L175 Difference]: Start difference. First operand has 148 places, 329 transitions, 3031 flow. Second operand 11 states and 144 transitions. [2025-02-06 04:41:58,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 395 transitions, 4348 flow [2025-02-06 04:41:58,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 395 transitions, 4116 flow, removed 58 selfloop flow, removed 12 redundant places. [2025-02-06 04:41:58,336 INFO L231 Difference]: Finished difference. Result has 150 places, 361 transitions, 3366 flow [2025-02-06 04:41:58,338 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2823, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3366, PETRI_PLACES=150, PETRI_TRANSITIONS=361} [2025-02-06 04:41:58,338 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 115 predicate places. [2025-02-06 04:41:58,338 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 361 transitions, 3366 flow [2025-02-06 04:41:58,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 11 states have internal predecessors, (89), 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 04:41:58,340 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:41:58,340 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:41:58,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-06 04:41:58,340 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 04:41:58,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:41:58,341 INFO L85 PathProgramCache]: Analyzing trace with hash -231077975, now seen corresponding path program 5 times [2025-02-06 04:41:58,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:41:58,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902381190] [2025-02-06 04:41:58,341 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:41:58,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:41:58,347 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-02-06 04:41:58,364 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 04:41:58,364 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:41:58,364 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:59,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:41:59,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:41:59,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902381190] [2025-02-06 04:41:59,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902381190] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:41:59,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546031186] [2025-02-06 04:41:59,160 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:41:59,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:41:59,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:41:59,162 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:41:59,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 04:41:59,201 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-02-06 04:41:59,216 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 04:41:59,216 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:41:59,216 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:59,217 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-02-06 04:41:59,219 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:41:59,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-06 04:41:59,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 35 [2025-02-06 04:41:59,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:41:59,577 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:42:01,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 217 treesize of output 195 [2025-02-06 04:42:01,589 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 04:42:01,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 296 treesize of output 278 [2025-02-06 04:42:05,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 96 [2025-02-06 04:42:05,286 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-06 04:42:05,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 115 [2025-02-06 04:42:05,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 182 treesize of output 166 [2025-02-06 04:42:05,581 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2025-02-06 04:42:05,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 214 treesize of output 1 [2025-02-06 04:42:05,641 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:42:05,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546031186] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:42:05,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:42:05,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 28 [2025-02-06 04:42:05,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835460237] [2025-02-06 04:42:05,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:42:05,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-02-06 04:42:05,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:42:05,643 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-02-06 04:42:05,643 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=675, Unknown=0, NotChecked=0, Total=812 [2025-02-06 04:42:05,773 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2025-02-06 04:42:05,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 361 transitions, 3366 flow. Second operand has 29 states, 29 states have (on average 7.586206896551724) internal successors, (220), 29 states have internal predecessors, (220), 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 04:42:05,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:42:05,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2025-02-06 04:42:05,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:42:10,181 INFO L124 PetriNetUnfolderBase]: 9096/13273 cut-off events. [2025-02-06 04:42:10,181 INFO L125 PetriNetUnfolderBase]: For 51583/51583 co-relation queries the response was YES. [2025-02-06 04:42:10,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57552 conditions, 13273 events. 9096/13273 cut-off events. For 51583/51583 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 76173 event pairs, 1186 based on Foata normal form. 3/13274 useless extension candidates. Maximal degree in co-relation 55399. Up to 7544 conditions per place. [2025-02-06 04:42:10,368 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 367 selfloop transitions, 389 changer transitions 2/760 dead transitions. [2025-02-06 04:42:10,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 760 transitions, 7831 flow [2025-02-06 04:42:10,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2025-02-06 04:42:10,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2025-02-06 04:42:10,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 542 transitions. [2025-02-06 04:42:10,371 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4106060606060606 [2025-02-06 04:42:10,371 INFO L175 Difference]: Start difference. First operand has 150 places, 361 transitions, 3366 flow. Second operand 40 states and 542 transitions. [2025-02-06 04:42:10,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 760 transitions, 7831 flow [2025-02-06 04:42:10,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 760 transitions, 7651 flow, removed 65 selfloop flow, removed 2 redundant places. [2025-02-06 04:42:10,509 INFO L231 Difference]: Finished difference. Result has 202 places, 569 transitions, 6595 flow [2025-02-06 04:42:10,509 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3287, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=6595, PETRI_PLACES=202, PETRI_TRANSITIONS=569} [2025-02-06 04:42:10,511 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 167 predicate places. [2025-02-06 04:42:10,511 INFO L471 AbstractCegarLoop]: Abstraction has has 202 places, 569 transitions, 6595 flow [2025-02-06 04:42:10,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 7.586206896551724) internal successors, (220), 29 states have internal predecessors, (220), 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 04:42:10,511 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:42:10,511 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:42:10,518 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-06 04:42:10,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:10,713 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 04:42:10,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:42:10,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1555862205, now seen corresponding path program 6 times [2025-02-06 04:42:10,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:42:10,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332616390] [2025-02-06 04:42:10,715 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 04:42:10,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:42:10,720 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 26 statements into 2 equivalence classes. [2025-02-06 04:42:10,729 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 04:42:10,729 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-06 04:42:10,729 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:11,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:42:11,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:42:11,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332616390] [2025-02-06 04:42:11,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332616390] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:42:11,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74170950] [2025-02-06 04:42:11,035 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 04:42:11,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:11,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:42:11,037 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:42:11,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-06 04:42:11,076 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 26 statements into 2 equivalence classes. [2025-02-06 04:42:11,091 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 04:42:11,091 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-06 04:42:11,091 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:11,092 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-02-06 04:42:11,093 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:42:11,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-06 04:42:11,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 41 [2025-02-06 04:42:11,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:42:11,347 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:42:12,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 217 treesize of output 195 [2025-02-06 04:42:12,620 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 04:42:12,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 296 treesize of output 278 [2025-02-06 04:42:14,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 96 [2025-02-06 04:42:14,822 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-06 04:42:14,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 115 [2025-02-06 04:42:15,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 183 treesize of output 167 [2025-02-06 04:42:15,084 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2025-02-06 04:42:15,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 215 treesize of output 1 [2025-02-06 04:42:15,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:42:15,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74170950] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:42:15,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:42:15,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 22 [2025-02-06 04:42:15,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929107719] [2025-02-06 04:42:15,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:42:15,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 04:42:15,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:42:15,134 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 04:42:15,135 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2025-02-06 04:42:15,273 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2025-02-06 04:42:15,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 569 transitions, 6595 flow. Second operand has 23 states, 23 states have (on average 9.869565217391305) internal successors, (227), 23 states have internal predecessors, (227), 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 04:42:15,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:42:15,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2025-02-06 04:42:15,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:42:18,549 INFO L124 PetriNetUnfolderBase]: 6721/10721 cut-off events. [2025-02-06 04:42:18,550 INFO L125 PetriNetUnfolderBase]: For 74011/74393 co-relation queries the response was YES. [2025-02-06 04:42:18,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56839 conditions, 10721 events. 6721/10721 cut-off events. For 74011/74393 co-relation queries the response was YES. Maximal size of possible extension queue 609. Compared 70769 event pairs, 291 based on Foata normal form. 274/10893 useless extension candidates. Maximal degree in co-relation 56057. Up to 3566 conditions per place. [2025-02-06 04:42:18,780 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 270 selfloop transitions, 605 changer transitions 2/896 dead transitions. [2025-02-06 04:42:18,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 896 transitions, 11098 flow [2025-02-06 04:42:18,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2025-02-06 04:42:18,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2025-02-06 04:42:18,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 644 transitions. [2025-02-06 04:42:18,786 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45384073291050037 [2025-02-06 04:42:18,787 INFO L175 Difference]: Start difference. First operand has 202 places, 569 transitions, 6595 flow. Second operand 43 states and 644 transitions. [2025-02-06 04:42:18,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 896 transitions, 11098 flow [2025-02-06 04:42:19,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 896 transitions, 10736 flow, removed 137 selfloop flow, removed 8 redundant places. [2025-02-06 04:42:19,017 INFO L231 Difference]: Finished difference. Result has 242 places, 715 transitions, 9644 flow [2025-02-06 04:42:19,018 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6273, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=471, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=9644, PETRI_PLACES=242, PETRI_TRANSITIONS=715} [2025-02-06 04:42:19,018 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 207 predicate places. [2025-02-06 04:42:19,018 INFO L471 AbstractCegarLoop]: Abstraction has has 242 places, 715 transitions, 9644 flow [2025-02-06 04:42:19,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.869565217391305) internal successors, (227), 23 states have internal predecessors, (227), 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 04:42:19,019 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:42:19,019 INFO L206 CegarLoopForPetriNet]: trace histogram [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] [2025-02-06 04:42:19,025 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-06 04:42:19,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-02-06 04:42:19,223 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:42:19,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:42:19,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1829837613, now seen corresponding path program 7 times [2025-02-06 04:42:19,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:42:19,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098631663] [2025-02-06 04:42:19,224 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 04:42:19,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:42:19,229 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-06 04:42:19,233 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-06 04:42:19,233 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:42:19,233 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:19,383 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:42:19,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:42:19,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098631663] [2025-02-06 04:42:19,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098631663] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:42:19,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693122311] [2025-02-06 04:42:19,383 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 04:42:19,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:19,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:42:19,385 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:42:19,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-06 04:42:19,427 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-06 04:42:19,442 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-06 04:42:19,443 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:42:19,443 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:19,443 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 04:42:19,444 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:42:19,494 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:42:19,494 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:42:19,547 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:42:19,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693122311] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:42:19,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:42:19,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2025-02-06 04:42:19,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894005432] [2025-02-06 04:42:19,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:42:19,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-06 04:42:19,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:42:19,548 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-06 04:42:19,548 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2025-02-06 04:42:19,570 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2025-02-06 04:42:19,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 715 transitions, 9644 flow. Second operand has 15 states, 15 states have (on average 8.733333333333333) internal successors, (131), 15 states have internal predecessors, (131), 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 04:42:19,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:42:19,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2025-02-06 04:42:19,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:42:21,469 INFO L124 PetriNetUnfolderBase]: 9292/14230 cut-off events. [2025-02-06 04:42:21,469 INFO L125 PetriNetUnfolderBase]: For 131781/132125 co-relation queries the response was YES. [2025-02-06 04:42:21,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82006 conditions, 14230 events. 9292/14230 cut-off events. For 131781/132125 co-relation queries the response was YES. Maximal size of possible extension queue 728. Compared 92020 event pairs, 1845 based on Foata normal form. 320/14529 useless extension candidates. Maximal degree in co-relation 81913. Up to 4672 conditions per place. [2025-02-06 04:42:21,591 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 803 selfloop transitions, 90 changer transitions 0/900 dead transitions. [2025-02-06 04:42:21,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 900 transitions, 13668 flow [2025-02-06 04:42:21,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 04:42:21,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 04:42:21,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2025-02-06 04:42:21,592 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5181818181818182 [2025-02-06 04:42:21,592 INFO L175 Difference]: Start difference. First operand has 242 places, 715 transitions, 9644 flow. Second operand 10 states and 171 transitions. [2025-02-06 04:42:21,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 900 transitions, 13668 flow [2025-02-06 04:42:22,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 900 transitions, 12816 flow, removed 351 selfloop flow, removed 16 redundant places. [2025-02-06 04:42:22,226 INFO L231 Difference]: Finished difference. Result has 237 places, 719 transitions, 9275 flow [2025-02-06 04:42:22,226 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=8890, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=710, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=625, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9275, PETRI_PLACES=237, PETRI_TRANSITIONS=719} [2025-02-06 04:42:22,226 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 202 predicate places. [2025-02-06 04:42:22,226 INFO L471 AbstractCegarLoop]: Abstraction has has 237 places, 719 transitions, 9275 flow [2025-02-06 04:42:22,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.733333333333333) internal successors, (131), 15 states have internal predecessors, (131), 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 04:42:22,227 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:42:22,227 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] [2025-02-06 04:42:22,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-06 04:42:22,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:22,428 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:42:22,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:42:22,429 INFO L85 PathProgramCache]: Analyzing trace with hash 37998241, now seen corresponding path program 8 times [2025-02-06 04:42:22,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:42:22,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687556550] [2025-02-06 04:42:22,429 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:42:22,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:42:22,434 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 29 statements into 2 equivalence classes. [2025-02-06 04:42:22,444 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-02-06 04:42:22,445 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:42:22,445 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:22,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:42:22,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:42:22,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687556550] [2025-02-06 04:42:22,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687556550] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:42:22,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279423195] [2025-02-06 04:42:22,589 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:42:22,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:22,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:42:22,594 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:42:22,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-06 04:42:22,633 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 29 statements into 2 equivalence classes. [2025-02-06 04:42:22,648 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-02-06 04:42:22,648 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:42:22,648 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:22,649 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 04:42:22,650 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:42:22,715 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:42:22,715 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 04:42:22,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279423195] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:42:22,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 04:42:22,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 14 [2025-02-06 04:42:22,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24223043] [2025-02-06 04:42:22,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:42:22,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 04:42:22,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:42:22,716 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 04:42:22,716 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2025-02-06 04:42:22,732 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2025-02-06 04:42:22,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 719 transitions, 9275 flow. Second operand has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:42:22,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:42:22,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2025-02-06 04:42:22,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand