./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 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb236053-c2d2-434d-8a5b-66defc05c9c4/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb236053-c2d2-434d-8a5b-66defc05c9c4/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb236053-c2d2-434d-8a5b-66defc05c9c4/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb236053-c2d2-434d-8a5b-66defc05c9c4/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb236053-c2d2-434d-8a5b-66defc05c9c4/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb236053-c2d2-434d-8a5b-66defc05c9c4/bin/uautomizer-verify-qhAvR1uOyd --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-dev-826ab2b [2024-11-13 15:54:19,141 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:54:19,216 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb236053-c2d2-434d-8a5b-66defc05c9c4/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 15:54:19,221 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:54:19,221 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:54:19,243 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:54:19,244 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:54:19,244 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:54:19,244 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:54:19,245 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:54:19,245 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:54:19,245 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:54:19,245 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:54:19,245 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:54:19,245 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:54:19,246 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:54:19,246 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 15:54:19,246 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 15:54:19,246 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:54:19,246 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 15:54:19,246 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:54:19,246 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 15:54:19,246 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:54:19,246 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 15:54:19,247 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:54:19,247 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 15:54:19,247 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 15:54:19,247 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:54:19,247 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:54:19,247 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:54:19,247 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:54:19,247 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:54:19,247 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:54:19,248 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:54:19,248 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:54:19,248 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 15:54:19,248 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 15:54:19,248 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 15:54:19,248 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:54:19,248 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:54:19,248 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:54:19,248 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:54:19,248 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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb236053-c2d2-434d-8a5b-66defc05c9c4/bin/uautomizer-verify-qhAvR1uOyd 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 [2024-11-13 15:54:19,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:54:19,525 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:54:19,528 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:54:19,529 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:54:19,529 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:54:19,530 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb236053-c2d2-434d-8a5b-66defc05c9c4/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c Unable to find full path for "g++" [2024-11-13 15:54:21,505 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:54:21,745 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:54:21,745 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb236053-c2d2-434d-8a5b-66defc05c9c4/sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c [2024-11-13 15:54:21,754 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb236053-c2d2-434d-8a5b-66defc05c9c4/bin/uautomizer-verify-qhAvR1uOyd/data/3c2743b5b/2b5b8c2bf48948f188cbcfe86c0bac45/FLAGf1af4c36a [2024-11-13 15:54:21,776 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb236053-c2d2-434d-8a5b-66defc05c9c4/bin/uautomizer-verify-qhAvR1uOyd/data/3c2743b5b/2b5b8c2bf48948f188cbcfe86c0bac45 [2024-11-13 15:54:21,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:54:21,782 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:54:21,785 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:54:21,785 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:54:21,790 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:54:21,791 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:54:21" (1/1) ... [2024-11-13 15:54:21,792 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b17e095 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:54:21, skipping insertion in model container [2024-11-13 15:54:21,792 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:54:21" (1/1) ... [2024-11-13 15:54:21,821 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:54:22,078 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb236053-c2d2-434d-8a5b-66defc05c9c4/sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c[4403,4416] [2024-11-13 15:54:22,096 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:54:22,110 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:54:22,152 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb236053-c2d2-434d-8a5b-66defc05c9c4/sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c[4403,4416] [2024-11-13 15:54:22,161 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:54:22,184 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:54:22,185 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:54:22 WrapperNode [2024-11-13 15:54:22,185 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:54:22,187 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:54:22,188 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:54:22,188 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:54:22,198 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:54:22" (1/1) ... [2024-11-13 15:54:22,210 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:54:22" (1/1) ... [2024-11-13 15:54:22,254 INFO L138 Inliner]: procedures = 26, calls = 67, calls flagged for inlining = 22, calls inlined = 28, statements flattened = 333 [2024-11-13 15:54:22,254 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:54:22,255 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:54:22,255 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:54:22,255 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:54:22,265 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:54:22" (1/1) ... [2024-11-13 15:54:22,265 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:54:22" (1/1) ... [2024-11-13 15:54:22,269 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:54:22" (1/1) ... [2024-11-13 15:54:22,286 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]. [2024-11-13 15:54:22,286 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:54:22" (1/1) ... [2024-11-13 15:54:22,286 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:54:22" (1/1) ... [2024-11-13 15:54:22,296 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:54:22" (1/1) ... [2024-11-13 15:54:22,300 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:54:22" (1/1) ... [2024-11-13 15:54:22,302 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:54:22" (1/1) ... [2024-11-13 15:54:22,304 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:54:22" (1/1) ... [2024-11-13 15:54:22,307 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:54:22,308 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:54:22,308 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:54:22,308 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:54:22,309 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:54:22" (1/1) ... [2024-11-13 15:54:22,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:54:22,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb236053-c2d2-434d-8a5b-66defc05c9c4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:54:22,360 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb236053-c2d2-434d-8a5b-66defc05c9c4/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:54:22,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb236053-c2d2-434d-8a5b-66defc05c9c4/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:54:22,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 15:54:22,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 15:54:22,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 15:54:22,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 15:54:22,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 15:54:22,397 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-13 15:54:22,397 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-13 15:54:22,397 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-13 15:54:22,397 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-13 15:54:22,397 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-13 15:54:22,397 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-13 15:54:22,397 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-13 15:54:22,397 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-13 15:54:22,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 15:54:22,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 15:54:22,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-13 15:54:22,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-13 15:54:22,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 15:54:22,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:54:22,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:54:22,399 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 15:54:22,554 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:54:22,557 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:54:23,185 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 15:54:23,185 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:54:23,802 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:54:23,802 INFO L316 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-13 15:54:23,803 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:54:23 BoogieIcfgContainer [2024-11-13 15:54:23,803 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:54:23,806 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 15:54:23,806 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 15:54:23,853 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 15:54:23,853 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:54:21" (1/3) ... [2024-11-13 15:54:23,853 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70a7cc78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:54:23, skipping insertion in model container [2024-11-13 15:54:23,853 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:54:22" (2/3) ... [2024-11-13 15:54:23,854 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70a7cc78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:54:23, skipping insertion in model container [2024-11-13 15:54:23,854 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:54:23" (3/3) ... [2024-11-13 15:54:23,856 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series.wvr.c [2024-11-13 15:54:23,872 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 15:54:23,874 INFO L154 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. [2024-11-13 15:54:23,874 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 15:54:23,971 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-13 15:54:24,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 52 transitions, 132 flow [2024-11-13 15:54:24,077 INFO L124 PetriNetUnfolderBase]: 7/48 cut-off events. [2024-11-13 15:54:24,082 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-13 15:54:24,090 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 82 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. [2024-11-13 15:54:24,090 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 52 transitions, 132 flow [2024-11-13 15:54:24,097 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 47 transitions, 118 flow [2024-11-13 15:54:24,109 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:54:24,129 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;@38aa59f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:54:24,130 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-13 15:54:24,159 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 15:54:24,159 INFO L124 PetriNetUnfolderBase]: 7/46 cut-off events. [2024-11-13 15:54:24,159 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-13 15:54:24,159 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:54:24,161 INFO L204 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] [2024-11-13 15:54:24,161 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)] === [2024-11-13 15:54:24,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:54:24,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1369541980, now seen corresponding path program 1 times [2024-11-13 15:54:24,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:54:24,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460186640] [2024-11-13 15:54:24,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:54:24,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:54:24,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:24,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:54:24,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:54:24,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460186640] [2024-11-13 15:54:24,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460186640] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:54:24,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:54:24,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:54:24,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893123745] [2024-11-13 15:54:24,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:54:24,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:54:24,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:54:24,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:54:24,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:54:24,753 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 52 [2024-11-13 15:54:24,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:54:24,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:54:24,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 52 [2024-11-13 15:54:24,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:54:25,648 INFO L124 PetriNetUnfolderBase]: 2408/3712 cut-off events. [2024-11-13 15:54:25,648 INFO L125 PetriNetUnfolderBase]: For 205/205 co-relation queries the response was YES. [2024-11-13 15:54:25,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6983 conditions, 3712 events. 2408/3712 cut-off events. For 205/205 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 21258 event pairs, 472 based on Foata normal form. 1/3511 useless extension candidates. Maximal degree in co-relation 6291. Up to 2067 conditions per place. [2024-11-13 15:54:25,698 INFO L140 encePairwiseOnDemand]: 48/52 looper letters, 43 selfloop transitions, 3 changer transitions 1/64 dead transitions. [2024-11-13 15:54:25,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 64 transitions, 261 flow [2024-11-13 15:54:25,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:54:25,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 15:54:25,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 111 transitions. [2024-11-13 15:54:25,718 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7115384615384616 [2024-11-13 15:54:25,721 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 118 flow. Second operand 3 states and 111 transitions. [2024-11-13 15:54:25,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 64 transitions, 261 flow [2024-11-13 15:54:25,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 64 transitions, 235 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-13 15:54:25,739 INFO L231 Difference]: Finished difference. Result has 48 places, 49 transitions, 121 flow [2024-11-13 15:54:25,744 INFO L260 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} [2024-11-13 15:54:25,749 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, -5 predicate places. [2024-11-13 15:54:25,749 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 49 transitions, 121 flow [2024-11-13 15:54:25,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:54:25,750 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:54:25,750 INFO L204 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] [2024-11-13 15:54:25,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 15:54:25,751 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)] === [2024-11-13 15:54:25,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:54:25,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1954021766, now seen corresponding path program 1 times [2024-11-13 15:54:25,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:54:25,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329031144] [2024-11-13 15:54:25,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:54:25,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:54:25,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:26,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:54:26,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:54:26,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329031144] [2024-11-13 15:54:26,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329031144] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:54:26,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:54:26,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:54:26,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065884192] [2024-11-13 15:54:26,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:54:26,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:54:26,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:54:26,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:54:26,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:54:26,122 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 52 [2024-11-13 15:54:26,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 49 transitions, 121 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2024-11-13 15:54:26,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:54:26,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 52 [2024-11-13 15:54:26,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:54:26,837 INFO L124 PetriNetUnfolderBase]: 2398/3648 cut-off events. [2024-11-13 15:54:26,838 INFO L125 PetriNetUnfolderBase]: For 614/614 co-relation queries the response was YES. [2024-11-13 15:54:26,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7581 conditions, 3648 events. 2398/3648 cut-off events. For 614/614 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 20916 event pairs, 549 based on Foata normal form. 76/3577 useless extension candidates. Maximal degree in co-relation 2649. Up to 2321 conditions per place. [2024-11-13 15:54:26,866 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 51 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2024-11-13 15:54:26,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 70 transitions, 283 flow [2024-11-13 15:54:26,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:54:26,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 15:54:26,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2024-11-13 15:54:26,868 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7307692307692307 [2024-11-13 15:54:26,869 INFO L175 Difference]: Start difference. First operand has 48 places, 49 transitions, 121 flow. Second operand 3 states and 114 transitions. [2024-11-13 15:54:26,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 70 transitions, 283 flow [2024-11-13 15:54:26,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 70 transitions, 279 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 15:54:26,871 INFO L231 Difference]: Finished difference. Result has 50 places, 50 transitions, 132 flow [2024-11-13 15:54:26,872 INFO L260 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} [2024-11-13 15:54:26,872 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, -3 predicate places. [2024-11-13 15:54:26,872 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 50 transitions, 132 flow [2024-11-13 15:54:26,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2024-11-13 15:54:26,874 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:54:26,874 INFO L204 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] [2024-11-13 15:54:26,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 15:54:26,874 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)] === [2024-11-13 15:54:26,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:54:26,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1110394158, now seen corresponding path program 1 times [2024-11-13 15:54:26,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:54:26,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106885264] [2024-11-13 15:54:26,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:54:26,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:54:26,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:27,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:54:27,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:54:27,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106885264] [2024-11-13 15:54:27,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106885264] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:54:27,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:54:27,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:54:27,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378160350] [2024-11-13 15:54:27,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:54:27,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:54:27,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:54:27,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:54:27,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:54:27,140 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 52 [2024-11-13 15:54:27,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 50 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2024-11-13 15:54:27,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:54:27,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 52 [2024-11-13 15:54:27,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:54:27,727 INFO L124 PetriNetUnfolderBase]: 2363/3739 cut-off events. [2024-11-13 15:54:27,727 INFO L125 PetriNetUnfolderBase]: For 1405/1405 co-relation queries the response was YES. [2024-11-13 15:54:27,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8147 conditions, 3739 events. 2363/3739 cut-off events. For 1405/1405 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 22507 event pairs, 571 based on Foata normal form. 41/3618 useless extension candidates. Maximal degree in co-relation 5952. Up to 2334 conditions per place. [2024-11-13 15:54:27,753 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 51 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2024-11-13 15:54:27,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 70 transitions, 299 flow [2024-11-13 15:54:27,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:54:27,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 15:54:27,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 112 transitions. [2024-11-13 15:54:27,758 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.717948717948718 [2024-11-13 15:54:27,758 INFO L175 Difference]: Start difference. First operand has 50 places, 50 transitions, 132 flow. Second operand 3 states and 112 transitions. [2024-11-13 15:54:27,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 70 transitions, 299 flow [2024-11-13 15:54:27,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 70 transitions, 296 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 15:54:27,761 INFO L231 Difference]: Finished difference. Result has 52 places, 51 transitions, 144 flow [2024-11-13 15:54:27,761 INFO L260 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} [2024-11-13 15:54:27,765 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, -1 predicate places. [2024-11-13 15:54:27,766 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 51 transitions, 144 flow [2024-11-13 15:54:27,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2024-11-13 15:54:27,766 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:54:27,766 INFO L204 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] [2024-11-13 15:54:27,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 15:54:27,766 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)] === [2024-11-13 15:54:27,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:54:27,767 INFO L85 PathProgramCache]: Analyzing trace with hash 67398301, now seen corresponding path program 1 times [2024-11-13 15:54:27,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:54:27,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146144097] [2024-11-13 15:54:27,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:54:27,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:54:27,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:28,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:54:28,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:54:28,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146144097] [2024-11-13 15:54:28,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146144097] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:54:28,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:54:28,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:54:28,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433416717] [2024-11-13 15:54:28,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:54:28,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:54:28,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:54:28,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:54:28,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:54:28,069 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 52 [2024-11-13 15:54:28,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 51 transitions, 144 flow. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 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) [2024-11-13 15:54:28,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:54:28,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 52 [2024-11-13 15:54:28,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:54:28,823 INFO L124 PetriNetUnfolderBase]: 2795/4444 cut-off events. [2024-11-13 15:54:28,824 INFO L125 PetriNetUnfolderBase]: For 2274/2274 co-relation queries the response was YES. [2024-11-13 15:54:28,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10251 conditions, 4444 events. 2795/4444 cut-off events. For 2274/2274 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 29479 event pairs, 2080 based on Foata normal form. 94/4065 useless extension candidates. Maximal degree in co-relation 4768. Up to 3079 conditions per place. [2024-11-13 15:54:28,858 INFO L140 encePairwiseOnDemand]: 47/52 looper letters, 58 selfloop transitions, 4 changer transitions 0/79 dead transitions. [2024-11-13 15:54:28,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 79 transitions, 347 flow [2024-11-13 15:54:28,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:54:28,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 15:54:28,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2024-11-13 15:54:28,862 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6230769230769231 [2024-11-13 15:54:28,862 INFO L175 Difference]: Start difference. First operand has 52 places, 51 transitions, 144 flow. Second operand 5 states and 162 transitions. [2024-11-13 15:54:28,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 79 transitions, 347 flow [2024-11-13 15:54:28,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 79 transitions, 344 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 15:54:28,868 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 170 flow [2024-11-13 15:54:28,869 INFO L260 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=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=170, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2024-11-13 15:54:28,870 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 5 predicate places. [2024-11-13 15:54:28,871 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 170 flow [2024-11-13 15:54:28,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 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) [2024-11-13 15:54:28,871 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:54:28,871 INFO L204 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] [2024-11-13 15:54:28,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 15:54:28,872 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)] === [2024-11-13 15:54:28,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:54:28,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1763162059, now seen corresponding path program 1 times [2024-11-13 15:54:28,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:54:28,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033671989] [2024-11-13 15:54:28,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:54:28,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:54:28,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:29,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:54:29,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:54:29,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033671989] [2024-11-13 15:54:29,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033671989] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:54:29,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:54:29,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:54:29,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517217636] [2024-11-13 15:54:29,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:54:29,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:54:29,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:54:29,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:54:29,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:54:29,125 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 52 [2024-11-13 15:54:29,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 170 flow. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 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) [2024-11-13 15:54:29,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:54:29,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 52 [2024-11-13 15:54:29,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:54:29,944 INFO L124 PetriNetUnfolderBase]: 3459/5671 cut-off events. [2024-11-13 15:54:29,944 INFO L125 PetriNetUnfolderBase]: For 2903/2903 co-relation queries the response was YES. [2024-11-13 15:54:29,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12804 conditions, 5671 events. 3459/5671 cut-off events. For 2903/2903 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 40540 event pairs, 2644 based on Foata normal form. 131/5204 useless extension candidates. Maximal degree in co-relation 10447. Up to 3845 conditions per place. [2024-11-13 15:54:29,985 INFO L140 encePairwiseOnDemand]: 46/52 looper letters, 59 selfloop transitions, 6 changer transitions 2/84 dead transitions. [2024-11-13 15:54:29,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 84 transitions, 400 flow [2024-11-13 15:54:29,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:54:29,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 15:54:29,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2024-11-13 15:54:29,987 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6230769230769231 [2024-11-13 15:54:29,987 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 170 flow. Second operand 5 states and 162 transitions. [2024-11-13 15:54:29,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 84 transitions, 400 flow [2024-11-13 15:54:29,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 84 transitions, 396 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-13 15:54:29,995 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 209 flow [2024-11-13 15:54:29,996 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=209, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2024-11-13 15:54:29,997 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 11 predicate places. [2024-11-13 15:54:29,998 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 209 flow [2024-11-13 15:54:29,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 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) [2024-11-13 15:54:29,998 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:54:29,998 INFO L204 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] [2024-11-13 15:54:29,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 15:54:29,998 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)] === [2024-11-13 15:54:29,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:54:29,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1903364895, now seen corresponding path program 1 times [2024-11-13 15:54:29,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:54:29,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015656536] [2024-11-13 15:54:29,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:54:29,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:54:30,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:30,437 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 15:54:30,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:54:30,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015656536] [2024-11-13 15:54:30,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015656536] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:54:30,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:54:30,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:54:30,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104298005] [2024-11-13 15:54:30,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:54:30,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:54:30,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:54:30,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:54:30,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:54:30,512 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 52 [2024-11-13 15:54:30,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 209 flow. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 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) [2024-11-13 15:54:30,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:54:30,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 52 [2024-11-13 15:54:30,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:54:32,409 INFO L124 PetriNetUnfolderBase]: 8319/13428 cut-off events. [2024-11-13 15:54:32,410 INFO L125 PetriNetUnfolderBase]: For 5838/5855 co-relation queries the response was YES. [2024-11-13 15:54:32,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30064 conditions, 13428 events. 8319/13428 cut-off events. For 5838/5855 co-relation queries the response was YES. Maximal size of possible extension queue 730. Compared 101673 event pairs, 3756 based on Foata normal form. 0/12316 useless extension candidates. Maximal degree in co-relation 22628. Up to 4773 conditions per place. [2024-11-13 15:54:32,486 INFO L140 encePairwiseOnDemand]: 45/52 looper letters, 100 selfloop transitions, 9 changer transitions 1/124 dead transitions. [2024-11-13 15:54:32,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 124 transitions, 645 flow [2024-11-13 15:54:32,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:54:32,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 15:54:32,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 201 transitions. [2024-11-13 15:54:32,488 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6442307692307693 [2024-11-13 15:54:32,488 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 209 flow. Second operand 6 states and 201 transitions. [2024-11-13 15:54:32,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 124 transitions, 645 flow [2024-11-13 15:54:32,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 124 transitions, 638 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-13 15:54:32,492 INFO L231 Difference]: Finished difference. Result has 72 places, 62 transitions, 262 flow [2024-11-13 15:54:32,493 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=262, PETRI_PLACES=72, PETRI_TRANSITIONS=62} [2024-11-13 15:54:32,493 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 19 predicate places. [2024-11-13 15:54:32,493 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 62 transitions, 262 flow [2024-11-13 15:54:32,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 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) [2024-11-13 15:54:32,494 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:54:32,494 INFO L204 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] [2024-11-13 15:54:32,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 15:54:32,494 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)] === [2024-11-13 15:54:32,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:54:32,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1136326167, now seen corresponding path program 1 times [2024-11-13 15:54:32,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:54:32,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646659374] [2024-11-13 15:54:32,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:54:32,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:54:32,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:32,982 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 15:54:32,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:54:32,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646659374] [2024-11-13 15:54:32,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646659374] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:54:32,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:54:32,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:54:32,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442107116] [2024-11-13 15:54:32,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:54:32,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:54:32,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:54:32,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:54:32,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:54:33,058 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 52 [2024-11-13 15:54:33,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 62 transitions, 262 flow. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 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) [2024-11-13 15:54:33,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:54:33,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 52 [2024-11-13 15:54:33,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:54:34,654 INFO L124 PetriNetUnfolderBase]: 8968/13455 cut-off events. [2024-11-13 15:54:34,654 INFO L125 PetriNetUnfolderBase]: For 6598/6692 co-relation queries the response was YES. [2024-11-13 15:54:34,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31818 conditions, 13455 events. 8968/13455 cut-off events. For 6598/6692 co-relation queries the response was YES. Maximal size of possible extension queue 769. Compared 93905 event pairs, 3225 based on Foata normal form. 0/12549 useless extension candidates. Maximal degree in co-relation 24855. Up to 7786 conditions per place. [2024-11-13 15:54:34,743 INFO L140 encePairwiseOnDemand]: 45/52 looper letters, 76 selfloop transitions, 11 changer transitions 8/110 dead transitions. [2024-11-13 15:54:34,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 110 transitions, 594 flow [2024-11-13 15:54:34,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:54:34,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 15:54:34,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 190 transitions. [2024-11-13 15:54:34,744 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6089743589743589 [2024-11-13 15:54:34,745 INFO L175 Difference]: Start difference. First operand has 72 places, 62 transitions, 262 flow. Second operand 6 states and 190 transitions. [2024-11-13 15:54:34,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 110 transitions, 594 flow [2024-11-13 15:54:34,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 110 transitions, 583 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-11-13 15:54:34,751 INFO L231 Difference]: Finished difference. Result has 78 places, 65 transitions, 298 flow [2024-11-13 15:54:34,751 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=298, PETRI_PLACES=78, PETRI_TRANSITIONS=65} [2024-11-13 15:54:34,752 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 25 predicate places. [2024-11-13 15:54:34,752 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 65 transitions, 298 flow [2024-11-13 15:54:34,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 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) [2024-11-13 15:54:34,753 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:54:34,753 INFO L204 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] [2024-11-13 15:54:34,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 15:54:34,753 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)] === [2024-11-13 15:54:34,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:54:34,753 INFO L85 PathProgramCache]: Analyzing trace with hash 416604275, now seen corresponding path program 2 times [2024-11-13 15:54:34,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:54:34,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818222107] [2024-11-13 15:54:34,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:54:34,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:54:34,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:35,097 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 15:54:35,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:54:35,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818222107] [2024-11-13 15:54:35,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818222107] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:54:35,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:54:35,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:54:35,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974587418] [2024-11-13 15:54:35,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:54:35,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:54:35,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:54:35,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:54:35,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:54:35,172 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 52 [2024-11-13 15:54:35,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 65 transitions, 298 flow. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 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) [2024-11-13 15:54:35,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:54:35,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 52 [2024-11-13 15:54:35,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:54:36,862 INFO L124 PetriNetUnfolderBase]: 8713/13214 cut-off events. [2024-11-13 15:54:36,862 INFO L125 PetriNetUnfolderBase]: For 7435/7619 co-relation queries the response was YES. [2024-11-13 15:54:36,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32101 conditions, 13214 events. 8713/13214 cut-off events. For 7435/7619 co-relation queries the response was YES. Maximal size of possible extension queue 677. Compared 92329 event pairs, 3825 based on Foata normal form. 0/12024 useless extension candidates. Maximal degree in co-relation 26939. Up to 5905 conditions per place. [2024-11-13 15:54:36,952 INFO L140 encePairwiseOnDemand]: 45/52 looper letters, 63 selfloop transitions, 6 changer transitions 30/113 dead transitions. [2024-11-13 15:54:36,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 113 transitions, 619 flow [2024-11-13 15:54:36,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:54:36,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 15:54:36,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 191 transitions. [2024-11-13 15:54:36,955 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6121794871794872 [2024-11-13 15:54:36,955 INFO L175 Difference]: Start difference. First operand has 78 places, 65 transitions, 298 flow. Second operand 6 states and 191 transitions. [2024-11-13 15:54:36,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 113 transitions, 619 flow [2024-11-13 15:54:37,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 113 transitions, 609 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-13 15:54:37,126 INFO L231 Difference]: Finished difference. Result has 83 places, 60 transitions, 258 flow [2024-11-13 15:54:37,131 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=258, PETRI_PLACES=83, PETRI_TRANSITIONS=60} [2024-11-13 15:54:37,131 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 30 predicate places. [2024-11-13 15:54:37,131 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 60 transitions, 258 flow [2024-11-13 15:54:37,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 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) [2024-11-13 15:54:37,132 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:54:37,132 INFO L204 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] [2024-11-13 15:54:37,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 15:54:37,132 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)] === [2024-11-13 15:54:37,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:54:37,132 INFO L85 PathProgramCache]: Analyzing trace with hash 25206381, now seen corresponding path program 1 times [2024-11-13 15:54:37,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:54:37,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221380677] [2024-11-13 15:54:37,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:54:37,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:54:37,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:37,506 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:54:37,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:54:37,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221380677] [2024-11-13 15:54:37,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221380677] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:54:37,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888002122] [2024-11-13 15:54:37,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:54:37,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:54:37,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb236053-c2d2-434d-8a5b-66defc05c9c4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:54:37,509 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb236053-c2d2-434d-8a5b-66defc05c9c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:54:37,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb236053-c2d2-434d-8a5b-66defc05c9c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 15:54:37,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:37,661 INFO L255 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 15:54:37,666 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:54:37,968 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:54:37,968 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:54:38,182 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:54:38,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888002122] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:54:38,182 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:54:38,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 17 [2024-11-13 15:54:38,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751643353] [2024-11-13 15:54:38,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:54:38,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 15:54:38,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:54:38,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 15:54:38,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2024-11-13 15:54:38,463 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 52 [2024-11-13 15:54:38,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 60 transitions, 258 flow. Second operand has 18 states, 18 states have (on average 21.333333333333332) internal successors, (384), 18 states have internal predecessors, (384), 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) [2024-11-13 15:54:38,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:54:38,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 52 [2024-11-13 15:54:38,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:54:40,749 INFO L124 PetriNetUnfolderBase]: 11916/17410 cut-off events. [2024-11-13 15:54:40,749 INFO L125 PetriNetUnfolderBase]: For 9714/9714 co-relation queries the response was YES. [2024-11-13 15:54:40,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44212 conditions, 17410 events. 11916/17410 cut-off events. For 9714/9714 co-relation queries the response was YES. Maximal size of possible extension queue 930. Compared 119379 event pairs, 779 based on Foata normal form. 0/16909 useless extension candidates. Maximal degree in co-relation 39894. Up to 4001 conditions per place. [2024-11-13 15:54:40,833 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 142 selfloop transitions, 18 changer transitions 8/182 dead transitions. [2024-11-13 15:54:40,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 182 transitions, 1030 flow [2024-11-13 15:54:40,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 15:54:40,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-13 15:54:40,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 354 transitions. [2024-11-13 15:54:40,835 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5673076923076923 [2024-11-13 15:54:40,835 INFO L175 Difference]: Start difference. First operand has 83 places, 60 transitions, 258 flow. Second operand 12 states and 354 transitions. [2024-11-13 15:54:40,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 182 transitions, 1030 flow [2024-11-13 15:54:40,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 182 transitions, 1005 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-11-13 15:54:40,857 INFO L231 Difference]: Finished difference. Result has 82 places, 67 transitions, 309 flow [2024-11-13 15:54:40,857 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=309, PETRI_PLACES=82, PETRI_TRANSITIONS=67} [2024-11-13 15:54:40,858 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 29 predicate places. [2024-11-13 15:54:40,858 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 67 transitions, 309 flow [2024-11-13 15:54:40,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 21.333333333333332) internal successors, (384), 18 states have internal predecessors, (384), 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) [2024-11-13 15:54:40,859 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:54:40,859 INFO L204 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] [2024-11-13 15:54:40,877 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb236053-c2d2-434d-8a5b-66defc05c9c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 15:54:41,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb236053-c2d2-434d-8a5b-66defc05c9c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:54:41,063 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)] === [2024-11-13 15:54:41,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:54:41,063 INFO L85 PathProgramCache]: Analyzing trace with hash -759640919, now seen corresponding path program 2 times [2024-11-13 15:54:41,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:54:41,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955273633] [2024-11-13 15:54:41,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:54:41,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:54:41,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:41,384 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 15:54:41,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:54:41,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955273633] [2024-11-13 15:54:41,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955273633] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:54:41,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:54:41,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:54:41,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240377803] [2024-11-13 15:54:41,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:54:41,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:54:41,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:54:41,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:54:41,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:54:41,451 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 52 [2024-11-13 15:54:41,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 67 transitions, 309 flow. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 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) [2024-11-13 15:54:41,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:54:41,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 52 [2024-11-13 15:54:41,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:54:42,764 INFO L124 PetriNetUnfolderBase]: 7076/10645 cut-off events. [2024-11-13 15:54:42,764 INFO L125 PetriNetUnfolderBase]: For 13946/14270 co-relation queries the response was YES. [2024-11-13 15:54:42,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30556 conditions, 10645 events. 7076/10645 cut-off events. For 13946/14270 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 69659 event pairs, 852 based on Foata normal form. 448/10857 useless extension candidates. Maximal degree in co-relation 30521. Up to 5342 conditions per place. [2024-11-13 15:54:42,832 INFO L140 encePairwiseOnDemand]: 46/52 looper letters, 80 selfloop transitions, 5 changer transitions 2/107 dead transitions. [2024-11-13 15:54:42,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 107 transitions, 683 flow [2024-11-13 15:54:42,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:54:42,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 15:54:42,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 175 transitions. [2024-11-13 15:54:42,834 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5608974358974359 [2024-11-13 15:54:42,834 INFO L175 Difference]: Start difference. First operand has 82 places, 67 transitions, 309 flow. Second operand 6 states and 175 transitions. [2024-11-13 15:54:42,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 107 transitions, 683 flow [2024-11-13 15:54:42,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 107 transitions, 632 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-11-13 15:54:42,861 INFO L231 Difference]: Finished difference. Result has 80 places, 65 transitions, 273 flow [2024-11-13 15:54:42,861 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=273, PETRI_PLACES=80, PETRI_TRANSITIONS=65} [2024-11-13 15:54:42,862 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 27 predicate places. [2024-11-13 15:54:42,862 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 65 transitions, 273 flow [2024-11-13 15:54:42,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 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) [2024-11-13 15:54:42,863 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:54:42,863 INFO L204 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] [2024-11-13 15:54:42,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 15:54:42,863 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)] === [2024-11-13 15:54:42,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:54:42,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1163961446, now seen corresponding path program 1 times [2024-11-13 15:54:42,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:54:42,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292125863] [2024-11-13 15:54:42,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:54:42,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:54:42,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:43,214 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 15:54:43,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:54:43,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292125863] [2024-11-13 15:54:43,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292125863] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:54:43,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195801573] [2024-11-13 15:54:43,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:54:43,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:54:43,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb236053-c2d2-434d-8a5b-66defc05c9c4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:54:43,217 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb236053-c2d2-434d-8a5b-66defc05c9c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:54:43,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb236053-c2d2-434d-8a5b-66defc05c9c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 15:54:43,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:43,375 INFO L255 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 15:54:43,379 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:54:43,667 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 15:54:43,667 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:54:43,895 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 15:54:43,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195801573] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:54:43,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:54:43,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 16 [2024-11-13 15:54:43,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357746726] [2024-11-13 15:54:43,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:54:43,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-13 15:54:43,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:54:43,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-13 15:54:43,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2024-11-13 15:54:44,137 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 52 [2024-11-13 15:54:44,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 65 transitions, 273 flow. Second operand has 17 states, 17 states have (on average 20.88235294117647) internal successors, (355), 17 states have internal predecessors, (355), 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) [2024-11-13 15:54:44,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:54:44,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 52 [2024-11-13 15:54:44,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:54:49,658 INFO L124 PetriNetUnfolderBase]: 22162/31915 cut-off events. [2024-11-13 15:54:49,659 INFO L125 PetriNetUnfolderBase]: For 36937/37892 co-relation queries the response was YES. [2024-11-13 15:54:49,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91792 conditions, 31915 events. 22162/31915 cut-off events. For 36937/37892 co-relation queries the response was YES. Maximal size of possible extension queue 1467. Compared 219733 event pairs, 387 based on Foata normal form. 1146/32411 useless extension candidates. Maximal degree in co-relation 91759. Up to 4291 conditions per place. [2024-11-13 15:54:49,824 INFO L140 encePairwiseOnDemand]: 37/52 looper letters, 440 selfloop transitions, 180 changer transitions 0/633 dead transitions. [2024-11-13 15:54:49,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 633 transitions, 3958 flow [2024-11-13 15:54:49,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-13 15:54:49,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-11-13 15:54:49,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1061 transitions. [2024-11-13 15:54:49,828 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5514553014553014 [2024-11-13 15:54:49,829 INFO L175 Difference]: Start difference. First operand has 80 places, 65 transitions, 273 flow. Second operand 37 states and 1061 transitions. [2024-11-13 15:54:49,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 633 transitions, 3958 flow [2024-11-13 15:54:49,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 633 transitions, 3906 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-11-13 15:54:49,863 INFO L231 Difference]: Finished difference. Result has 139 places, 246 transitions, 2011 flow [2024-11-13 15:54:49,863 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=2011, PETRI_PLACES=139, PETRI_TRANSITIONS=246} [2024-11-13 15:54:49,864 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 86 predicate places. [2024-11-13 15:54:49,864 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 246 transitions, 2011 flow [2024-11-13 15:54:49,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 20.88235294117647) internal successors, (355), 17 states have internal predecessors, (355), 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) [2024-11-13 15:54:49,865 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:54:49,865 INFO L204 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] [2024-11-13 15:54:49,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb236053-c2d2-434d-8a5b-66defc05c9c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 15:54:50,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb236053-c2d2-434d-8a5b-66defc05c9c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:54:50,065 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)] === [2024-11-13 15:54:50,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:54:50,066 INFO L85 PathProgramCache]: Analyzing trace with hash 2010058044, now seen corresponding path program 1 times [2024-11-13 15:54:50,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:54:50,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930168627] [2024-11-13 15:54:50,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:54:50,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:54:50,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:50,329 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 15:54:50,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:54:50,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930168627] [2024-11-13 15:54:50,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930168627] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:54:50,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830609984] [2024-11-13 15:54:50,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:54:50,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:54:50,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb236053-c2d2-434d-8a5b-66defc05c9c4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:54:50,332 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb236053-c2d2-434d-8a5b-66defc05c9c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:54:50,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb236053-c2d2-434d-8a5b-66defc05c9c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 15:54:50,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:50,474 INFO L255 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 15:54:50,477 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:54:50,603 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 15:54:50,603 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:54:50,786 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 15:54:50,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830609984] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 15:54:50,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:54:50,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5, 5] total 11 [2024-11-13 15:54:50,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129919472] [2024-11-13 15:54:50,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:54:50,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 15:54:50,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:54:50,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 15:54:50,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-11-13 15:54:50,810 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 52 [2024-11-13 15:54:50,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 246 transitions, 2011 flow. Second operand has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 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) [2024-11-13 15:54:50,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:54:50,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 52 [2024-11-13 15:54:50,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:55:02,034 INFO L124 PetriNetUnfolderBase]: 50407/72360 cut-off events. [2024-11-13 15:55:02,034 INFO L125 PetriNetUnfolderBase]: For 984989/987391 co-relation queries the response was YES. [2024-11-13 15:55:02,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 357887 conditions, 72360 events. 50407/72360 cut-off events. For 984989/987391 co-relation queries the response was YES. Maximal size of possible extension queue 2683. Compared 520496 event pairs, 4938 based on Foata normal form. 1911/74152 useless extension candidates. Maximal degree in co-relation 357825. Up to 23482 conditions per place. [2024-11-13 15:55:02,891 INFO L140 encePairwiseOnDemand]: 45/52 looper letters, 471 selfloop transitions, 51 changer transitions 0/533 dead transitions. [2024-11-13 15:55:02,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 533 transitions, 5735 flow [2024-11-13 15:55:02,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:55:02,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 15:55:02,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 184 transitions. [2024-11-13 15:55:02,893 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5897435897435898 [2024-11-13 15:55:02,893 INFO L175 Difference]: Start difference. First operand has 139 places, 246 transitions, 2011 flow. Second operand 6 states and 184 transitions. [2024-11-13 15:55:02,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 533 transitions, 5735 flow [2024-11-13 15:55:09,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 533 transitions, 5610 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-11-13 15:55:09,986 INFO L231 Difference]: Finished difference. Result has 141 places, 273 transitions, 2349 flow [2024-11-13 15:55:09,987 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1926, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2349, PETRI_PLACES=141, PETRI_TRANSITIONS=273} [2024-11-13 15:55:09,987 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 88 predicate places. [2024-11-13 15:55:09,988 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 273 transitions, 2349 flow [2024-11-13 15:55:09,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 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) [2024-11-13 15:55:09,988 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:55:09,988 INFO L204 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] [2024-11-13 15:55:10,003 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb236053-c2d2-434d-8a5b-66defc05c9c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 15:55:10,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb236053-c2d2-434d-8a5b-66defc05c9c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-13 15:55:10,190 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)] === [2024-11-13 15:55:10,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:55:10,190 INFO L85 PathProgramCache]: Analyzing trace with hash -215651224, now seen corresponding path program 1 times [2024-11-13 15:55:10,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:55:10,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655202241] [2024-11-13 15:55:10,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:55:10,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:55:10,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:55:14,161 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:55:14,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:55:14,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655202241] [2024-11-13 15:55:14,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655202241] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:55:14,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852727628] [2024-11-13 15:55:14,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:55:14,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:55:14,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb236053-c2d2-434d-8a5b-66defc05c9c4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:55:14,164 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb236053-c2d2-434d-8a5b-66defc05c9c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:55:14,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb236053-c2d2-434d-8a5b-66defc05c9c4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 15:55:14,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:55:14,313 INFO L255 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-13 15:55:14,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:55:14,405 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 [2024-11-13 15:55:14,504 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 [2024-11-13 15:55:14,582 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 15:55:14,582 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 [2024-11-13 15:55:14,667 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 [2024-11-13 15:55:15,667 INFO L349 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2024-11-13 15:55:15,668 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 42 [2024-11-13 15:55:15,681 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:55:15,681 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:55:25,081 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:55:25,081 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 155 treesize of output 95 [2024-11-13 15:55:25,232 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:55:25,233 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 322 treesize of output 478 [2024-11-13 15:55:25,418 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:55:25,419 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 226 treesize of output 370