./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8dbd267b0e0821e8d358e8d234024d8e484ea32431972ed8b70b87052179a50c --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 17:35:10,152 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 17:35:10,206 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 17:35:10,212 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 17:35:10,212 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 17:35:10,232 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 17:35:10,234 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 17:35:10,234 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 17:35:10,235 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 17:35:10,235 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 17:35:10,236 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 17:35:10,236 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 17:35:10,236 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 17:35:10,236 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 17:35:10,236 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 17:35:10,237 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 17:35:10,237 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 17:35:10,237 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 17:35:10,237 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 17:35:10,237 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 17:35:10,237 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 17:35:10,237 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 17:35:10,237 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 17:35:10,237 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 17:35:10,237 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 17:35:10,238 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 17:35:10,238 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 17:35:10,238 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 17:35:10,238 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 17:35:10,238 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 17:35:10,238 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 17:35:10,238 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 17:35:10,238 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 17:35:10,238 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 17:35:10,239 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 17:35:10,239 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 17:35:10,239 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 17:35:10,239 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 17:35:10,239 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 17:35:10,239 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 17:35:10,239 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 17:35:10,239 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 17:35:10,239 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 17:35:10,239 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8dbd267b0e0821e8d358e8d234024d8e484ea32431972ed8b70b87052179a50c [2025-03-08 17:35:10,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 17:35:10,472 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 17:35:10,474 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 17:35:10,474 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 17:35:10,475 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 17:35:10,476 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c [2025-03-08 17:35:11,584 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cc241773/1e55b61eff3b454cbdbe780e6a25b21d/FLAGc216a4dd9 [2025-03-08 17:35:11,799 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 17:35:11,801 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c [2025-03-08 17:35:11,808 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cc241773/1e55b61eff3b454cbdbe780e6a25b21d/FLAGc216a4dd9 [2025-03-08 17:35:11,825 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cc241773/1e55b61eff3b454cbdbe780e6a25b21d [2025-03-08 17:35:11,827 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 17:35:11,829 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 17:35:11,831 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 17:35:11,831 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 17:35:11,835 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 17:35:11,835 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:35:11" (1/1) ... [2025-03-08 17:35:11,836 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ec086a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:35:11, skipping insertion in model container [2025-03-08 17:35:11,836 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:35:11" (1/1) ... [2025-03-08 17:35:11,853 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 17:35:11,997 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c[4403,4416] [2025-03-08 17:35:12,007 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 17:35:12,016 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 17:35:12,040 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c[4403,4416] [2025-03-08 17:35:12,044 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 17:35:12,060 INFO L204 MainTranslator]: Completed translation [2025-03-08 17:35:12,060 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:35:12 WrapperNode [2025-03-08 17:35:12,060 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 17:35:12,061 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 17:35:12,061 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 17:35:12,061 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 17:35:12,065 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:35:12" (1/1) ... [2025-03-08 17:35:12,073 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:35:12" (1/1) ... [2025-03-08 17:35:12,094 INFO L138 Inliner]: procedures = 26, calls = 67, calls flagged for inlining = 22, calls inlined = 28, statements flattened = 319 [2025-03-08 17:35:12,095 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 17:35:12,095 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 17:35:12,095 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 17:35:12,095 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 17:35:12,103 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:35:12" (1/1) ... [2025-03-08 17:35:12,104 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:35:12" (1/1) ... [2025-03-08 17:35:12,106 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:35:12" (1/1) ... [2025-03-08 17:35:12,125 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2025-03-08 17:35:12,125 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:35:12" (1/1) ... [2025-03-08 17:35:12,125 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:35:12" (1/1) ... [2025-03-08 17:35:12,133 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:35:12" (1/1) ... [2025-03-08 17:35:12,134 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:35:12" (1/1) ... [2025-03-08 17:35:12,135 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:35:12" (1/1) ... [2025-03-08 17:35:12,136 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:35:12" (1/1) ... [2025-03-08 17:35:12,138 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 17:35:12,138 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 17:35:12,138 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 17:35:12,138 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 17:35:12,139 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:35:12" (1/1) ... [2025-03-08 17:35:12,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 17:35:12,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:35:12,159 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 17:35:12,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 17:35:12,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 17:35:12,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-08 17:35:12,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-08 17:35:12,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-08 17:35:12,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-08 17:35:12,176 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-08 17:35:12,176 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-08 17:35:12,177 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-08 17:35:12,177 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-08 17:35:12,177 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-08 17:35:12,177 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-08 17:35:12,177 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-03-08 17:35:12,177 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-03-08 17:35:12,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 17:35:12,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 17:35:12,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-08 17:35:12,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-08 17:35:12,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-08 17:35:12,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 17:35:12,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 17:35:12,178 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-08 17:35:12,279 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 17:35:12,281 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 17:35:12,680 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-08 17:35:12,681 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 17:35:12,957 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 17:35:12,957 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 17:35:12,958 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:35:12 BoogieIcfgContainer [2025-03-08 17:35:12,958 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 17:35:12,959 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 17:35:12,960 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 17:35:12,963 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 17:35:12,963 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 05:35:11" (1/3) ... [2025-03-08 17:35:12,964 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55b78dcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:35:12, skipping insertion in model container [2025-03-08 17:35:12,964 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:35:12" (2/3) ... [2025-03-08 17:35:12,964 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55b78dcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:35:12, skipping insertion in model container [2025-03-08 17:35:12,964 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:35:12" (3/3) ... [2025-03-08 17:35:12,966 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series.wvr.c [2025-03-08 17:35:12,976 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 17:35:12,977 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-buffer-series.wvr.c that has 5 procedures, 46 locations, 1 initial locations, 7 loop locations, and 1 error locations. [2025-03-08 17:35:12,978 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-08 17:35:13,029 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-03-08 17:35:13,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 52 transitions, 132 flow [2025-03-08 17:35:13,088 INFO L124 PetriNetUnfolderBase]: 7/48 cut-off events. [2025-03-08 17:35:13,089 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-08 17:35:13,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 48 events. 7/48 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 90 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2025-03-08 17:35:13,094 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 52 transitions, 132 flow [2025-03-08 17:35:13,097 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 47 transitions, 118 flow [2025-03-08 17:35:13,107 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 17:35:13,114 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;@2a784963, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 17:35:13,116 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-03-08 17:35:13,130 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-08 17:35:13,131 INFO L124 PetriNetUnfolderBase]: 7/46 cut-off events. [2025-03-08 17:35:13,131 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-08 17:35:13,131 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:35:13,132 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:35:13,132 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 2 more)] === [2025-03-08 17:35:13,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:35:13,136 INFO L85 PathProgramCache]: Analyzing trace with hash 366776383, now seen corresponding path program 1 times [2025-03-08 17:35:13,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:35:13,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927705971] [2025-03-08 17:35:13,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:35:13,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:35:13,198 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-03-08 17:35:13,246 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-08 17:35:13,251 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:35:13,251 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:35:13,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:35:13,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:35:13,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927705971] [2025-03-08 17:35:13,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927705971] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:35:13,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:35:13,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 17:35:13,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852329000] [2025-03-08 17:35:13,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:35:13,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 17:35:13,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:35:13,449 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 17:35:13,449 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 17:35:13,450 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2025-03-08 17:35:13,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:35:13,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:35:13,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2025-03-08 17:35:13,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:35:14,192 INFO L124 PetriNetUnfolderBase]: 5629/7734 cut-off events. [2025-03-08 17:35:14,192 INFO L125 PetriNetUnfolderBase]: For 501/501 co-relation queries the response was YES. [2025-03-08 17:35:14,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15602 conditions, 7734 events. 5629/7734 cut-off events. For 501/501 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 39176 event pairs, 1634 based on Foata normal form. 1/7559 useless extension candidates. Maximal degree in co-relation 14262. Up to 4718 conditions per place. [2025-03-08 17:35:14,248 INFO L140 encePairwiseOnDemand]: 48/52 looper letters, 57 selfloop transitions, 3 changer transitions 1/70 dead transitions. [2025-03-08 17:35:14,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 70 transitions, 301 flow [2025-03-08 17:35:14,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 17:35:14,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-08 17:35:14,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2025-03-08 17:35:14,261 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6474358974358975 [2025-03-08 17:35:14,262 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 118 flow. Second operand 3 states and 101 transitions. [2025-03-08 17:35:14,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 70 transitions, 301 flow [2025-03-08 17:35:14,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 70 transitions, 275 flow, removed 0 selfloop flow, removed 8 redundant places. [2025-03-08 17:35:14,277 INFO L231 Difference]: Finished difference. Result has 48 places, 49 transitions, 121 flow [2025-03-08 17:35:14,279 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=121, PETRI_PLACES=48, PETRI_TRANSITIONS=49} [2025-03-08 17:35:14,282 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, -5 predicate places. [2025-03-08 17:35:14,282 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 49 transitions, 121 flow [2025-03-08 17:35:14,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:35:14,283 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:35:14,284 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:35:14,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 17:35:14,284 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 2 more)] === [2025-03-08 17:35:14,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:35:14,285 INFO L85 PathProgramCache]: Analyzing trace with hash -2046079184, now seen corresponding path program 1 times [2025-03-08 17:35:14,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:35:14,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362172208] [2025-03-08 17:35:14,286 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:35:14,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:35:14,302 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-08 17:35:14,326 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-08 17:35:14,327 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:35:14,327 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:35:14,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:35:14,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:35:14,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362172208] [2025-03-08 17:35:14,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362172208] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:35:14,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:35:14,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 17:35:14,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709679792] [2025-03-08 17:35:14,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:35:14,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 17:35:14,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:35:14,450 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 17:35:14,450 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 17:35:14,450 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2025-03-08 17:35:14,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 49 transitions, 121 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:35:14,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:35:14,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2025-03-08 17:35:14,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:35:15,039 INFO L124 PetriNetUnfolderBase]: 6879/9589 cut-off events. [2025-03-08 17:35:15,040 INFO L125 PetriNetUnfolderBase]: For 1239/1239 co-relation queries the response was YES. [2025-03-08 17:35:15,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20242 conditions, 9589 events. 6879/9589 cut-off events. For 1239/1239 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 51696 event pairs, 2262 based on Foata normal form. 231/9725 useless extension candidates. Maximal degree in co-relation 7920. Up to 6208 conditions per place. [2025-03-08 17:35:15,081 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 64 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2025-03-08 17:35:15,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 75 transitions, 319 flow [2025-03-08 17:35:15,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 17:35:15,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-08 17:35:15,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2025-03-08 17:35:15,082 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6602564102564102 [2025-03-08 17:35:15,083 INFO L175 Difference]: Start difference. First operand has 48 places, 49 transitions, 121 flow. Second operand 3 states and 103 transitions. [2025-03-08 17:35:15,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 75 transitions, 319 flow [2025-03-08 17:35:15,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 75 transitions, 315 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-08 17:35:15,084 INFO L231 Difference]: Finished difference. Result has 50 places, 50 transitions, 132 flow [2025-03-08 17:35:15,084 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=50, PETRI_TRANSITIONS=50} [2025-03-08 17:35:15,084 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, -3 predicate places. [2025-03-08 17:35:15,084 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 50 transitions, 132 flow [2025-03-08 17:35:15,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:35:15,085 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:35:15,085 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:35:15,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 17:35:15,085 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 2 more)] === [2025-03-08 17:35:15,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:35:15,085 INFO L85 PathProgramCache]: Analyzing trace with hash 421941302, now seen corresponding path program 1 times [2025-03-08 17:35:15,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:35:15,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432461043] [2025-03-08 17:35:15,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:35:15,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:35:15,101 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-08 17:35:15,114 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-08 17:35:15,118 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:35:15,119 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:35:15,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:35:15,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:35:15,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432461043] [2025-03-08 17:35:15,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432461043] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:35:15,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:35:15,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 17:35:15,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56728070] [2025-03-08 17:35:15,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:35:15,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 17:35:15,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:35:15,220 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 17:35:15,221 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 17:35:15,221 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2025-03-08 17:35:15,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 50 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:35:15,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:35:15,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2025-03-08 17:35:15,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:35:15,967 INFO L124 PetriNetUnfolderBase]: 8267/11662 cut-off events. [2025-03-08 17:35:15,967 INFO L125 PetriNetUnfolderBase]: For 3103/3103 co-relation queries the response was YES. [2025-03-08 17:35:15,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25376 conditions, 11662 events. 8267/11662 cut-off events. For 3103/3103 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 64749 event pairs, 2562 based on Foata normal form. 177/11761 useless extension candidates. Maximal degree in co-relation 17420. Up to 7562 conditions per place. [2025-03-08 17:35:16,013 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 64 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2025-03-08 17:35:16,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 75 transitions, 335 flow [2025-03-08 17:35:16,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 17:35:16,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-08 17:35:16,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2025-03-08 17:35:16,014 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6474358974358975 [2025-03-08 17:35:16,014 INFO L175 Difference]: Start difference. First operand has 50 places, 50 transitions, 132 flow. Second operand 3 states and 101 transitions. [2025-03-08 17:35:16,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 75 transitions, 335 flow [2025-03-08 17:35:16,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 75 transitions, 332 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-08 17:35:16,016 INFO L231 Difference]: Finished difference. Result has 52 places, 51 transitions, 144 flow [2025-03-08 17:35:16,016 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=52, PETRI_TRANSITIONS=51} [2025-03-08 17:35:16,017 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, -1 predicate places. [2025-03-08 17:35:16,017 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 51 transitions, 144 flow [2025-03-08 17:35:16,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:35:16,017 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:35:16,017 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:35:16,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 17:35:16,018 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 2 more)] === [2025-03-08 17:35:16,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:35:16,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1559229919, now seen corresponding path program 1 times [2025-03-08 17:35:16,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:35:16,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526584001] [2025-03-08 17:35:16,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:35:16,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:35:16,027 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-08 17:35:16,046 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-08 17:35:16,046 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:35:16,046 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:35:16,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:35:16,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:35:16,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526584001] [2025-03-08 17:35:16,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526584001] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:35:16,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:35:16,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 17:35:16,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698408685] [2025-03-08 17:35:16,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:35:16,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 17:35:16,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:35:16,159 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 17:35:16,159 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 17:35:16,159 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2025-03-08 17:35:16,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 51 transitions, 144 flow. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:35:16,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:35:16,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2025-03-08 17:35:16,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:35:16,872 INFO L124 PetriNetUnfolderBase]: 10574/15243 cut-off events. [2025-03-08 17:35:16,873 INFO L125 PetriNetUnfolderBase]: For 5582/5582 co-relation queries the response was YES. [2025-03-08 17:35:16,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34157 conditions, 15243 events. 10574/15243 cut-off events. For 5582/5582 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 92029 event pairs, 8770 based on Foata normal form. 255/15371 useless extension candidates. Maximal degree in co-relation 16875. Up to 10990 conditions per place. [2025-03-08 17:35:16,932 INFO L140 encePairwiseOnDemand]: 44/52 looper letters, 73 selfloop transitions, 7 changer transitions 0/89 dead transitions. [2025-03-08 17:35:16,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 89 transitions, 403 flow [2025-03-08 17:35:16,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 17:35:16,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-08 17:35:16,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 140 transitions. [2025-03-08 17:35:16,937 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5384615384615384 [2025-03-08 17:35:16,937 INFO L175 Difference]: Start difference. First operand has 52 places, 51 transitions, 144 flow. Second operand 5 states and 140 transitions. [2025-03-08 17:35:16,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 89 transitions, 403 flow [2025-03-08 17:35:16,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 89 transitions, 400 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-08 17:35:16,940 INFO L231 Difference]: Finished difference. Result has 58 places, 57 transitions, 194 flow [2025-03-08 17:35:16,940 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=194, PETRI_PLACES=58, PETRI_TRANSITIONS=57} [2025-03-08 17:35:16,940 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 5 predicate places. [2025-03-08 17:35:16,941 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 57 transitions, 194 flow [2025-03-08 17:35:16,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:35:16,941 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:35:16,941 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:35:16,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 17:35:16,941 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 2 more)] === [2025-03-08 17:35:16,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:35:16,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1323614661, now seen corresponding path program 1 times [2025-03-08 17:35:16,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:35:16,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417096664] [2025-03-08 17:35:16,942 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:35:16,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:35:17,006 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-08 17:35:17,014 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-08 17:35:17,015 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:35:17,015 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:35:17,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:35:17,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:35:17,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417096664] [2025-03-08 17:35:17,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417096664] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:35:17,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:35:17,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 17:35:17,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302340041] [2025-03-08 17:35:17,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:35:17,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 17:35:17,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:35:17,119 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 17:35:17,119 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 17:35:17,120 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2025-03-08 17:35:17,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 57 transitions, 194 flow. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:35:17,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:35:17,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2025-03-08 17:35:17,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:35:18,316 INFO L124 PetriNetUnfolderBase]: 13585/19789 cut-off events. [2025-03-08 17:35:18,316 INFO L125 PetriNetUnfolderBase]: For 7328/7328 co-relation queries the response was YES. [2025-03-08 17:35:18,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43785 conditions, 19789 events. 13585/19789 cut-off events. For 7328/7328 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 126012 event pairs, 11518 based on Foata normal form. 385/20002 useless extension candidates. Maximal degree in co-relation 34618. Up to 14208 conditions per place. [2025-03-08 17:35:18,392 INFO L140 encePairwiseOnDemand]: 46/52 looper letters, 75 selfloop transitions, 7 changer transitions 2/93 dead transitions. [2025-03-08 17:35:18,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 93 transitions, 478 flow [2025-03-08 17:35:18,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 17:35:18,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-08 17:35:18,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 136 transitions. [2025-03-08 17:35:18,395 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5230769230769231 [2025-03-08 17:35:18,398 INFO L175 Difference]: Start difference. First operand has 58 places, 57 transitions, 194 flow. Second operand 5 states and 136 transitions. [2025-03-08 17:35:18,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 93 transitions, 478 flow [2025-03-08 17:35:18,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 93 transitions, 474 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-03-08 17:35:18,401 INFO L231 Difference]: Finished difference. Result has 64 places, 61 transitions, 244 flow [2025-03-08 17:35:18,401 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=244, PETRI_PLACES=64, PETRI_TRANSITIONS=61} [2025-03-08 17:35:18,401 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 11 predicate places. [2025-03-08 17:35:18,401 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 61 transitions, 244 flow [2025-03-08 17:35:18,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:35:18,402 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:35:18,402 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:35:18,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 17:35:18,402 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 2 more)] === [2025-03-08 17:35:18,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:35:18,402 INFO L85 PathProgramCache]: Analyzing trace with hash -228304299, now seen corresponding path program 1 times [2025-03-08 17:35:18,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:35:18,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223731079] [2025-03-08 17:35:18,402 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:35:18,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:35:18,413 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-08 17:35:18,445 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-08 17:35:18,448 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:35:18,449 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:35:18,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 17:35:18,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:35:18,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223731079] [2025-03-08 17:35:18,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223731079] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:35:18,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:35:18,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 17:35:18,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640184113] [2025-03-08 17:35:18,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:35:18,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 17:35:18,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:35:18,697 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 17:35:18,697 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 17:35:18,697 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2025-03-08 17:35:18,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 61 transitions, 244 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:35:18,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:35:18,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2025-03-08 17:35:18,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:35:20,385 INFO L124 PetriNetUnfolderBase]: 23298/33136 cut-off events. [2025-03-08 17:35:20,385 INFO L125 PetriNetUnfolderBase]: For 11083/11083 co-relation queries the response was YES. [2025-03-08 17:35:20,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74122 conditions, 33136 events. 23298/33136 cut-off events. For 11083/11083 co-relation queries the response was YES. Maximal size of possible extension queue 1138. Compared 216312 event pairs, 9202 based on Foata normal form. 0/31873 useless extension candidates. Maximal degree in co-relation 57063. Up to 12836 conditions per place. [2025-03-08 17:35:20,526 INFO L140 encePairwiseOnDemand]: 45/52 looper letters, 122 selfloop transitions, 11 changer transitions 1/142 dead transitions. [2025-03-08 17:35:20,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 142 transitions, 754 flow [2025-03-08 17:35:20,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 17:35:20,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-08 17:35:20,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2025-03-08 17:35:20,528 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5993589743589743 [2025-03-08 17:35:20,528 INFO L175 Difference]: Start difference. First operand has 64 places, 61 transitions, 244 flow. Second operand 6 states and 187 transitions. [2025-03-08 17:35:20,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 142 transitions, 754 flow [2025-03-08 17:35:20,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 142 transitions, 742 flow, removed 4 selfloop flow, removed 1 redundant places. [2025-03-08 17:35:20,535 INFO L231 Difference]: Finished difference. Result has 72 places, 64 transitions, 292 flow [2025-03-08 17:35:20,535 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=292, PETRI_PLACES=72, PETRI_TRANSITIONS=64} [2025-03-08 17:35:20,535 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 19 predicate places. [2025-03-08 17:35:20,536 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 64 transitions, 292 flow [2025-03-08 17:35:20,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:35:20,536 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:35:20,536 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:35:20,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 17:35:20,536 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 2 more)] === [2025-03-08 17:35:20,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:35:20,537 INFO L85 PathProgramCache]: Analyzing trace with hash 747317716, now seen corresponding path program 1 times [2025-03-08 17:35:20,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:35:20,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911747012] [2025-03-08 17:35:20,537 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:35:20,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:35:20,548 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-08 17:35:20,565 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-08 17:35:20,568 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:35:20,569 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:35:20,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 17:35:20,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:35:20,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911747012] [2025-03-08 17:35:20,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911747012] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:35:20,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:35:20,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 17:35:20,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027677570] [2025-03-08 17:35:20,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:35:20,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 17:35:20,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:35:20,766 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 17:35:20,766 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-08 17:35:20,767 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2025-03-08 17:35:20,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 64 transitions, 292 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:35:20,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:35:20,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2025-03-08 17:35:20,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:35:22,706 INFO L124 PetriNetUnfolderBase]: 20127/28670 cut-off events. [2025-03-08 17:35:22,706 INFO L125 PetriNetUnfolderBase]: For 12593/12658 co-relation queries the response was YES. [2025-03-08 17:35:22,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67299 conditions, 28670 events. 20127/28670 cut-off events. For 12593/12658 co-relation queries the response was YES. Maximal size of possible extension queue 951. Compared 182661 event pairs, 16535 based on Foata normal form. 0/27202 useless extension candidates. Maximal degree in co-relation 55830. Up to 25604 conditions per place. [2025-03-08 17:35:22,824 INFO L140 encePairwiseOnDemand]: 46/52 looper letters, 46 selfloop transitions, 7 changer transitions 34/95 dead transitions. [2025-03-08 17:35:22,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 95 transitions, 543 flow [2025-03-08 17:35:22,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 17:35:22,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-08 17:35:22,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2025-03-08 17:35:22,826 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46794871794871795 [2025-03-08 17:35:22,826 INFO L175 Difference]: Start difference. First operand has 72 places, 64 transitions, 292 flow. Second operand 6 states and 146 transitions. [2025-03-08 17:35:22,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 95 transitions, 543 flow [2025-03-08 17:35:22,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 95 transitions, 533 flow, removed 4 selfloop flow, removed 1 redundant places. [2025-03-08 17:35:22,832 INFO L231 Difference]: Finished difference. Result has 78 places, 61 transitions, 272 flow [2025-03-08 17:35:22,832 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=272, PETRI_PLACES=78, PETRI_TRANSITIONS=61} [2025-03-08 17:35:22,832 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 25 predicate places. [2025-03-08 17:35:22,832 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 61 transitions, 272 flow [2025-03-08 17:35:22,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:35:22,832 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:35:22,833 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:35:22,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 17:35:22,833 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 2 more)] === [2025-03-08 17:35:22,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:35:22,834 INFO L85 PathProgramCache]: Analyzing trace with hash 71317922, now seen corresponding path program 1 times [2025-03-08 17:35:22,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:35:22,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110235029] [2025-03-08 17:35:22,834 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:35:22,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:35:22,842 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-08 17:35:22,856 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-08 17:35:22,857 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:35:22,857 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:35:23,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 17:35:23,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:35:23,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110235029] [2025-03-08 17:35:23,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110235029] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:35:23,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:35:23,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 17:35:23,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477777948] [2025-03-08 17:35:23,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:35:23,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 17:35:23,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:35:23,029 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 17:35:23,029 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 17:35:23,032 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2025-03-08 17:35:23,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 61 transitions, 272 flow. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:35:23,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:35:23,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2025-03-08 17:35:23,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:35:24,376 INFO L124 PetriNetUnfolderBase]: 16416/24213 cut-off events. [2025-03-08 17:35:24,376 INFO L125 PetriNetUnfolderBase]: For 12500/12500 co-relation queries the response was YES. [2025-03-08 17:35:24,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57179 conditions, 24213 events. 16416/24213 cut-off events. For 12500/12500 co-relation queries the response was YES. Maximal size of possible extension queue 911. Compared 158153 event pairs, 4151 based on Foata normal form. 1169/25168 useless extension candidates. Maximal degree in co-relation 47585. Up to 11207 conditions per place. [2025-03-08 17:35:24,532 INFO L140 encePairwiseOnDemand]: 44/52 looper letters, 101 selfloop transitions, 11 changer transitions 8/129 dead transitions. [2025-03-08 17:35:24,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 129 transitions, 743 flow [2025-03-08 17:35:24,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 17:35:24,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-08 17:35:24,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 190 transitions. [2025-03-08 17:35:24,533 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.521978021978022 [2025-03-08 17:35:24,533 INFO L175 Difference]: Start difference. First operand has 78 places, 61 transitions, 272 flow. Second operand 7 states and 190 transitions. [2025-03-08 17:35:24,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 129 transitions, 743 flow [2025-03-08 17:35:24,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 129 transitions, 713 flow, removed 8 selfloop flow, removed 7 redundant places. [2025-03-08 17:35:24,550 INFO L231 Difference]: Finished difference. Result has 76 places, 65 transitions, 300 flow [2025-03-08 17:35:24,550 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=300, PETRI_PLACES=76, PETRI_TRANSITIONS=65} [2025-03-08 17:35:24,550 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 23 predicate places. [2025-03-08 17:35:24,550 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 65 transitions, 300 flow [2025-03-08 17:35:24,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:35:24,550 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:35:24,551 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:35:24,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 17:35:24,551 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 2 more)] === [2025-03-08 17:35:24,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:35:24,551 INFO L85 PathProgramCache]: Analyzing trace with hash -2114117745, now seen corresponding path program 1 times [2025-03-08 17:35:24,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:35:24,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582365639] [2025-03-08 17:35:24,551 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:35:24,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:35:24,561 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-08 17:35:24,570 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-08 17:35:24,571 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:35:24,571 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:35:24,723 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-08 17:35:24,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:35:24,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582365639] [2025-03-08 17:35:24,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582365639] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:35:24,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:35:24,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 17:35:24,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908288885] [2025-03-08 17:35:24,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:35:24,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 17:35:24,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:35:24,725 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 17:35:24,725 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-08 17:35:24,731 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2025-03-08 17:35:24,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 65 transitions, 300 flow. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:35:24,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:35:24,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2025-03-08 17:35:24,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:35:25,609 INFO L124 PetriNetUnfolderBase]: 11819/17061 cut-off events. [2025-03-08 17:35:25,609 INFO L125 PetriNetUnfolderBase]: For 16584/16598 co-relation queries the response was YES. [2025-03-08 17:35:25,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45970 conditions, 17061 events. 11819/17061 cut-off events. For 16584/16598 co-relation queries the response was YES. Maximal size of possible extension queue 643. Compared 105482 event pairs, 928 based on Foata normal form. 612/17635 useless extension candidates. Maximal degree in co-relation 39743. Up to 9586 conditions per place. [2025-03-08 17:35:25,691 INFO L140 encePairwiseOnDemand]: 46/52 looper letters, 101 selfloop transitions, 5 changer transitions 4/119 dead transitions. [2025-03-08 17:35:25,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 119 transitions, 754 flow [2025-03-08 17:35:25,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 17:35:25,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-08 17:35:25,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 158 transitions. [2025-03-08 17:35:25,692 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5064102564102564 [2025-03-08 17:35:25,692 INFO L175 Difference]: Start difference. First operand has 76 places, 65 transitions, 300 flow. Second operand 6 states and 158 transitions. [2025-03-08 17:35:25,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 119 transitions, 754 flow [2025-03-08 17:35:25,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 119 transitions, 730 flow, removed 5 selfloop flow, removed 5 redundant places. [2025-03-08 17:35:25,708 INFO L231 Difference]: Finished difference. Result has 75 places, 61 transitions, 264 flow [2025-03-08 17:35:25,708 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=264, PETRI_PLACES=75, PETRI_TRANSITIONS=61} [2025-03-08 17:35:25,709 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 22 predicate places. [2025-03-08 17:35:25,709 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 61 transitions, 264 flow [2025-03-08 17:35:25,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:35:25,709 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:35:25,709 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:35:25,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 17:35:25,709 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 2 more)] === [2025-03-08 17:35:25,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:35:25,710 INFO L85 PathProgramCache]: Analyzing trace with hash 19184816, now seen corresponding path program 1 times [2025-03-08 17:35:25,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:35:25,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649391300] [2025-03-08 17:35:25,710 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:35:25,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:35:25,719 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-03-08 17:35:25,732 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-08 17:35:25,732 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:35:25,732 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:35:25,864 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-08 17:35:25,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:35:25,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649391300] [2025-03-08 17:35:25,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649391300] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:35:25,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:35:25,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 17:35:25,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634897363] [2025-03-08 17:35:25,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:35:25,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 17:35:25,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:35:25,865 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 17:35:25,865 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 17:35:25,869 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2025-03-08 17:35:25,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 61 transitions, 264 flow. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:35:25,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:35:25,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2025-03-08 17:35:25,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:35:27,181 INFO L124 PetriNetUnfolderBase]: 17964/24982 cut-off events. [2025-03-08 17:35:27,181 INFO L125 PetriNetUnfolderBase]: For 27283/27283 co-relation queries the response was YES. [2025-03-08 17:35:27,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70699 conditions, 24982 events. 17964/24982 cut-off events. For 27283/27283 co-relation queries the response was YES. Maximal size of possible extension queue 852. Compared 146426 event pairs, 3525 based on Foata normal form. 413/25286 useless extension candidates. Maximal degree in co-relation 70666. Up to 8091 conditions per place. [2025-03-08 17:35:27,316 INFO L140 encePairwiseOnDemand]: 46/52 looper letters, 113 selfloop transitions, 18 changer transitions 0/140 dead transitions. [2025-03-08 17:35:27,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 140 transitions, 848 flow [2025-03-08 17:35:27,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 17:35:27,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-08 17:35:27,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 181 transitions. [2025-03-08 17:35:27,317 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5801282051282052 [2025-03-08 17:35:27,317 INFO L175 Difference]: Start difference. First operand has 75 places, 61 transitions, 264 flow. Second operand 6 states and 181 transitions. [2025-03-08 17:35:27,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 140 transitions, 848 flow [2025-03-08 17:35:27,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 140 transitions, 809 flow, removed 9 selfloop flow, removed 6 redundant places. [2025-03-08 17:35:27,344 INFO L231 Difference]: Finished difference. Result has 76 places, 73 transitions, 405 flow [2025-03-08 17:35:27,344 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=405, PETRI_PLACES=76, PETRI_TRANSITIONS=73} [2025-03-08 17:35:27,344 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 23 predicate places. [2025-03-08 17:35:27,344 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 73 transitions, 405 flow [2025-03-08 17:35:27,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:35:27,344 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:35:27,344 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:35:27,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 17:35:27,345 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 2 more)] === [2025-03-08 17:35:27,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:35:27,345 INFO L85 PathProgramCache]: Analyzing trace with hash -545328756, now seen corresponding path program 1 times [2025-03-08 17:35:27,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:35:27,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392192958] [2025-03-08 17:35:27,345 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:35:27,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:35:27,353 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-03-08 17:35:27,364 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-08 17:35:27,365 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:35:27,365 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:35:27,553 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-08 17:35:27,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:35:27,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392192958] [2025-03-08 17:35:27,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392192958] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:35:27,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002660978] [2025-03-08 17:35:27,553 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:35:27,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:35:27,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:35:27,556 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:35:27,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 17:35:27,620 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-03-08 17:35:27,652 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-08 17:35:27,652 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:35:27,652 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:35:27,654 INFO L256 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-08 17:35:27,658 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:35:27,889 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-08 17:35:27,891 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:35:28,018 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-08 17:35:28,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002660978] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-08 17:35:28,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-08 17:35:28,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6, 7] total 17 [2025-03-08 17:35:28,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53937439] [2025-03-08 17:35:28,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:35:28,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 17:35:28,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:35:28,019 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 17:35:28,019 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2025-03-08 17:35:28,023 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2025-03-08 17:35:28,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 73 transitions, 405 flow. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:35:28,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:35:28,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2025-03-08 17:35:28,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:35:31,314 INFO L124 PetriNetUnfolderBase]: 34363/46181 cut-off events. [2025-03-08 17:35:31,314 INFO L125 PetriNetUnfolderBase]: For 89345/89345 co-relation queries the response was YES. [2025-03-08 17:35:31,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140248 conditions, 46181 events. 34363/46181 cut-off events. For 89345/89345 co-relation queries the response was YES. Maximal size of possible extension queue 1397. Compared 265740 event pairs, 2439 based on Foata normal form. 0/44670 useless extension candidates. Maximal degree in co-relation 140213. Up to 17898 conditions per place. [2025-03-08 17:35:31,725 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 202 selfloop transitions, 23 changer transitions 2/234 dead transitions. [2025-03-08 17:35:31,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 234 transitions, 1837 flow [2025-03-08 17:35:31,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-08 17:35:31,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-08 17:35:31,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 266 transitions. [2025-03-08 17:35:31,727 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46503496503496505 [2025-03-08 17:35:31,727 INFO L175 Difference]: Start difference. First operand has 76 places, 73 transitions, 405 flow. Second operand 11 states and 266 transitions. [2025-03-08 17:35:31,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 234 transitions, 1837 flow [2025-03-08 17:35:31,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 234 transitions, 1822 flow, removed 7 selfloop flow, removed 2 redundant places. [2025-03-08 17:35:31,788 INFO L231 Difference]: Finished difference. Result has 92 places, 92 transitions, 613 flow [2025-03-08 17:35:31,788 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=613, PETRI_PLACES=92, PETRI_TRANSITIONS=92} [2025-03-08 17:35:31,789 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 39 predicate places. [2025-03-08 17:35:31,789 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 92 transitions, 613 flow [2025-03-08 17:35:31,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:35:31,789 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:35:31,789 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:35:31,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-08 17:35:31,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-08 17:35:31,990 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 2 more)] === [2025-03-08 17:35:31,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:35:31,990 INFO L85 PathProgramCache]: Analyzing trace with hash 825417968, now seen corresponding path program 2 times [2025-03-08 17:35:31,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:35:31,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400432209] [2025-03-08 17:35:31,991 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:35:31,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:35:32,001 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 44 statements into 2 equivalence classes. [2025-03-08 17:35:32,010 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 38 of 44 statements. [2025-03-08 17:35:32,010 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-08 17:35:32,010 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:35:32,126 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-08 17:35:32,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:35:32,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400432209] [2025-03-08 17:35:32,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400432209] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:35:32,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:35:32,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 17:35:32,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054723548] [2025-03-08 17:35:32,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:35:32,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 17:35:32,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:35:32,127 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 17:35:32,127 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 17:35:32,130 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2025-03-08 17:35:32,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 92 transitions, 613 flow. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:35:32,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:35:32,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2025-03-08 17:35:32,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:35:36,722 INFO L124 PetriNetUnfolderBase]: 45761/63627 cut-off events. [2025-03-08 17:35:36,722 INFO L125 PetriNetUnfolderBase]: For 213295/213322 co-relation queries the response was YES. [2025-03-08 17:35:37,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237179 conditions, 63627 events. 45761/63627 cut-off events. For 213295/213322 co-relation queries the response was YES. Maximal size of possible extension queue 1978. Compared 412057 event pairs, 7582 based on Foata normal form. 1135/63958 useless extension candidates. Maximal degree in co-relation 237136. Up to 20966 conditions per place. [2025-03-08 17:35:37,590 INFO L140 encePairwiseOnDemand]: 46/52 looper letters, 207 selfloop transitions, 15 changer transitions 0/233 dead transitions. [2025-03-08 17:35:37,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 233 transitions, 2112 flow [2025-03-08 17:35:37,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 17:35:37,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-08 17:35:37,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 185 transitions. [2025-03-08 17:35:37,591 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.592948717948718 [2025-03-08 17:35:37,591 INFO L175 Difference]: Start difference. First operand has 92 places, 92 transitions, 613 flow. Second operand 6 states and 185 transitions. [2025-03-08 17:35:37,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 233 transitions, 2112 flow [2025-03-08 17:35:37,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 233 transitions, 2078 flow, removed 15 selfloop flow, removed 2 redundant places. [2025-03-08 17:35:37,762 INFO L231 Difference]: Finished difference. Result has 99 places, 102 transitions, 728 flow [2025-03-08 17:35:37,762 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=728, PETRI_PLACES=99, PETRI_TRANSITIONS=102} [2025-03-08 17:35:37,763 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 46 predicate places. [2025-03-08 17:35:37,763 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 102 transitions, 728 flow [2025-03-08 17:35:37,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:35:37,763 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:35:37,763 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:35:37,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-08 17:35:37,763 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-08 17:35:37,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:35:37,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1153721355, now seen corresponding path program 1 times [2025-03-08 17:35:37,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:35:37,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868562249] [2025-03-08 17:35:37,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:35:37,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:35:37,772 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-03-08 17:35:37,816 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-03-08 17:35:37,817 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:35:37,817 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:35:39,742 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:35:39,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:35:39,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868562249] [2025-03-08 17:35:39,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868562249] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:35:39,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306284379] [2025-03-08 17:35:39,743 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:35:39,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:35:39,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:35:39,745 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:35:39,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 17:35:39,802 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-03-08 17:35:39,833 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-03-08 17:35:39,833 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:35:39,833 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:35:39,835 INFO L256 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-03-08 17:35:39,838 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:35:39,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-08 17:35:39,907 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 23 treesize of output 1 [2025-03-08 17:35:39,972 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2025-03-08 17:35:39,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2025-03-08 17:35:40,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-03-08 17:35:40,063 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-08 17:35:40,063 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 11 treesize of output 11 [2025-03-08 17:35:40,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-03-08 17:35:40,631 INFO L349 Elim1Store]: treesize reduction 12, result has 73.3 percent of original size [2025-03-08 17:35:40,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 46 [2025-03-08 17:35:40,641 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:35:40,641 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:35:41,513 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 17:35:41,514 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 173 treesize of output 113 [2025-03-08 17:35:41,618 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 17:35:41,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 3554 treesize of output 3294 [2025-03-08 17:35:41,753 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 17:35:41,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 1138 treesize of output 1066 [2025-03-08 17:35:41,878 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 17:35:41,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 850 treesize of output 922