./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f1231c8-f9c4-4a42-8850-425b0e3dff8c/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f1231c8-f9c4-4a42-8850-425b0e3dff8c/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f1231c8-f9c4-4a42-8850-425b0e3dff8c/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f1231c8-f9c4-4a42-8850-425b0e3dff8c/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f1231c8-f9c4-4a42-8850-425b0e3dff8c/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f1231c8-f9c4-4a42-8850-425b0e3dff8c/bin/uautomizer-verify-LYvppIcaGC --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 19261aa21d7ff8465246029ba19079abe08492ae10904d6c12d0346fe16f4773 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:48:47,651 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:48:47,747 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f1231c8-f9c4-4a42-8850-425b0e3dff8c/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 01:48:47,754 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:48:47,754 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:48:47,781 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:48:47,782 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:48:47,782 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:48:47,782 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:48:47,782 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:48:47,783 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:48:47,783 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:48:47,783 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:48:47,783 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:48:47,783 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:48:47,784 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:48:47,784 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:48:47,784 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 01:48:47,784 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:48:47,784 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 01:48:47,784 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:48:47,785 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:48:47,785 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:48:47,785 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:48:47,785 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 01:48:47,785 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:48:47,785 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:48:47,786 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:48:47,786 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:48:47,786 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:48:47,786 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:48:47,786 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:48:47,786 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:48:47,787 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:48:47,787 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:48:47,787 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:48:47,787 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:48:47,787 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:48:47,787 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:48:47,788 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:48:47,788 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:48:47,788 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:48:47,788 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:48:47,788 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:48:47,788 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:48:47,788 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:48:47,789 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:48:47,789 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:48:47,789 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_5f1231c8-f9c4-4a42-8850-425b0e3dff8c/bin/uautomizer-verify-LYvppIcaGC 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 -> 19261aa21d7ff8465246029ba19079abe08492ae10904d6c12d0346fe16f4773 [2024-11-24 01:48:48,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:48:48,161 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:48:48,163 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:48:48,165 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:48:48,165 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:48:48,166 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f1231c8-f9c4-4a42-8850-425b0e3dff8c/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2024-11-24 01:48:51,296 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f1231c8-f9c4-4a42-8850-425b0e3dff8c/bin/uautomizer-verify-LYvppIcaGC/data/e6ab192ae/da107bc4bb2842519b0db4e24156bbba/FLAG4a2858d10 [2024-11-24 01:48:51,775 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:48:51,776 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f1231c8-f9c4-4a42-8850-425b0e3dff8c/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2024-11-24 01:48:51,797 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f1231c8-f9c4-4a42-8850-425b0e3dff8c/bin/uautomizer-verify-LYvppIcaGC/data/e6ab192ae/da107bc4bb2842519b0db4e24156bbba/FLAG4a2858d10 [2024-11-24 01:48:51,819 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f1231c8-f9c4-4a42-8850-425b0e3dff8c/bin/uautomizer-verify-LYvppIcaGC/data/e6ab192ae/da107bc4bb2842519b0db4e24156bbba [2024-11-24 01:48:51,823 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:48:51,825 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:48:51,827 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:48:51,827 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:48:51,832 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:48:51,835 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:48:51" (1/1) ... [2024-11-24 01:48:51,836 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d00bffc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:48:51, skipping insertion in model container [2024-11-24 01:48:51,837 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:48:51" (1/1) ... [2024-11-24 01:48:51,893 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:48:52,133 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_5f1231c8-f9c4-4a42-8850-425b0e3dff8c/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7806,7819] [2024-11-24 01:48:52,183 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:48:52,215 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:48:52,275 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_5f1231c8-f9c4-4a42-8850-425b0e3dff8c/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7806,7819] [2024-11-24 01:48:52,322 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:48:52,340 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:48:52,341 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:48:52 WrapperNode [2024-11-24 01:48:52,341 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:48:52,342 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:48:52,343 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:48:52,343 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:48:52,350 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:48:52" (1/1) ... [2024-11-24 01:48:52,371 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:48:52" (1/1) ... [2024-11-24 01:48:52,442 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 687 [2024-11-24 01:48:52,442 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:48:52,442 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:48:52,443 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:48:52,443 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:48:52,458 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:48:52" (1/1) ... [2024-11-24 01:48:52,459 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:48:52" (1/1) ... [2024-11-24 01:48:52,463 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:48:52" (1/1) ... [2024-11-24 01:48:52,483 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-24 01:48:52,483 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:48:52" (1/1) ... [2024-11-24 01:48:52,483 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:48:52" (1/1) ... [2024-11-24 01:48:52,496 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:48:52" (1/1) ... [2024-11-24 01:48:52,498 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:48:52" (1/1) ... [2024-11-24 01:48:52,504 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:48:52" (1/1) ... [2024-11-24 01:48:52,506 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:48:52" (1/1) ... [2024-11-24 01:48:52,509 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:48:52" (1/1) ... [2024-11-24 01:48:52,513 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:48:52,514 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:48:52,514 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:48:52,514 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:48:52,515 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:48:52" (1/1) ... [2024-11-24 01:48:52,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:48:52,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f1231c8-f9c4-4a42-8850-425b0e3dff8c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:48:52,562 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f1231c8-f9c4-4a42-8850-425b0e3dff8c/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:48:52,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f1231c8-f9c4-4a42-8850-425b0e3dff8c/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:48:52,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:48:52,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 01:48:52,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:48:52,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:48:52,746 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:48:52,749 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:48:53,715 INFO L? ?]: Removed 51 outVars from TransFormulas that were not future-live. [2024-11-24 01:48:53,716 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:48:53,736 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:48:53,739 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-24 01:48:53,739 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:48:53 BoogieIcfgContainer [2024-11-24 01:48:53,740 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:48:53,742 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:48:53,742 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:48:53,748 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:48:53,749 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:48:51" (1/3) ... [2024-11-24 01:48:53,750 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e443225 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:48:53, skipping insertion in model container [2024-11-24 01:48:53,750 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:48:52" (2/3) ... [2024-11-24 01:48:53,751 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e443225 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:48:53, skipping insertion in model container [2024-11-24 01:48:53,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:48:53" (3/3) ... [2024-11-24 01:48:53,753 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2024-11-24 01:48:53,772 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:48:53,776 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c that has 1 procedures, 149 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-24 01:48:53,861 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:48:53,878 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;@755895ed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:48:53,878 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 01:48:53,885 INFO L276 IsEmpty]: Start isEmpty. Operand has 149 states, 147 states have (on average 1.7619047619047619) internal successors, (259), 148 states have internal predecessors, (259), 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) [2024-11-24 01:48:53,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-24 01:48:53,894 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:48:53,895 INFO L218 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:48:53,896 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:48:53,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:48:53,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1468963440, now seen corresponding path program 1 times [2024-11-24 01:48:53,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:48:53,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105114532] [2024-11-24 01:48:53,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:48:53,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:48:54,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:48:54,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:48:54,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:48:54,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105114532] [2024-11-24 01:48:54,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105114532] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:48:54,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:48:54,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:48:54,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361823817] [2024-11-24 01:48:54,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:48:54,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:48:54,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:48:54,692 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:48:54,693 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:48:54,696 INFO L87 Difference]: Start difference. First operand has 149 states, 147 states have (on average 1.7619047619047619) internal successors, (259), 148 states have internal predecessors, (259), 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) Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-11-24 01:48:54,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:48:54,861 INFO L93 Difference]: Finished difference Result 323 states and 547 transitions. [2024-11-24 01:48:54,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:48:54,865 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) Word has length 62 [2024-11-24 01:48:54,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:48:54,877 INFO L225 Difference]: With dead ends: 323 [2024-11-24 01:48:54,877 INFO L226 Difference]: Without dead ends: 225 [2024-11-24 01:48:54,884 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:48:54,888 INFO L435 NwaCegarLoop]: 259 mSDtfsCounter, 150 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:48:54,888 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 452 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:48:54,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2024-11-24 01:48:54,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 223. [2024-11-24 01:48:54,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 1.572072072072072) internal successors, (349), 222 states have internal predecessors, (349), 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) [2024-11-24 01:48:54,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 349 transitions. [2024-11-24 01:48:54,944 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 349 transitions. Word has length 62 [2024-11-24 01:48:54,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:48:54,945 INFO L471 AbstractCegarLoop]: Abstraction has 223 states and 349 transitions. [2024-11-24 01:48:54,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-11-24 01:48:54,945 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 349 transitions. [2024-11-24 01:48:54,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-24 01:48:54,947 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:48:54,948 INFO L218 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:48:54,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 01:48:54,948 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:48:54,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:48:54,949 INFO L85 PathProgramCache]: Analyzing trace with hash -240910223, now seen corresponding path program 1 times [2024-11-24 01:48:54,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:48:54,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117865279] [2024-11-24 01:48:54,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:48:54,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:48:55,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:48:55,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:48:55,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:48:55,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117865279] [2024-11-24 01:48:55,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117865279] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:48:55,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:48:55,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:48:55,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170318564] [2024-11-24 01:48:55,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:48:55,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:48:55,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:48:55,250 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:48:55,250 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:48:55,250 INFO L87 Difference]: Start difference. First operand 223 states and 349 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:48:55,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:48:55,334 INFO L93 Difference]: Finished difference Result 539 states and 869 transitions. [2024-11-24 01:48:55,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:48:55,335 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-24 01:48:55,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:48:55,338 INFO L225 Difference]: With dead ends: 539 [2024-11-24 01:48:55,338 INFO L226 Difference]: Without dead ends: 373 [2024-11-24 01:48:55,339 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:48:55,343 INFO L435 NwaCegarLoop]: 222 mSDtfsCounter, 125 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:48:55,343 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 415 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:48:55,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2024-11-24 01:48:55,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 371. [2024-11-24 01:48:55,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 1.6) internal successors, (592), 370 states have internal predecessors, (592), 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) [2024-11-24 01:48:55,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 592 transitions. [2024-11-24 01:48:55,369 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 592 transitions. Word has length 64 [2024-11-24 01:48:55,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:48:55,370 INFO L471 AbstractCegarLoop]: Abstraction has 371 states and 592 transitions. [2024-11-24 01:48:55,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:48:55,370 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 592 transitions. [2024-11-24 01:48:55,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-24 01:48:55,373 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:48:55,373 INFO L218 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:48:55,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 01:48:55,373 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:48:55,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:48:55,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1851209774, now seen corresponding path program 1 times [2024-11-24 01:48:55,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:48:55,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745583643] [2024-11-24 01:48:55,374 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:48:55,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:48:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:48:55,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:48:55,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:48:55,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745583643] [2024-11-24 01:48:55,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745583643] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:48:55,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:48:55,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:48:55,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025202179] [2024-11-24 01:48:55,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:48:55,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:48:55,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:48:55,630 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:48:55,631 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:48:55,631 INFO L87 Difference]: Start difference. First operand 371 states and 592 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:48:55,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:48:55,692 INFO L93 Difference]: Finished difference Result 967 states and 1570 transitions. [2024-11-24 01:48:55,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:48:55,693 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-11-24 01:48:55,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:48:55,696 INFO L225 Difference]: With dead ends: 967 [2024-11-24 01:48:55,697 INFO L226 Difference]: Without dead ends: 653 [2024-11-24 01:48:55,698 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:48:55,699 INFO L435 NwaCegarLoop]: 222 mSDtfsCounter, 119 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:48:55,699 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 416 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:48:55,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2024-11-24 01:48:55,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 651. [2024-11-24 01:48:55,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 650 states have (on average 1.6123076923076922) internal successors, (1048), 650 states have internal predecessors, (1048), 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) [2024-11-24 01:48:55,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1048 transitions. [2024-11-24 01:48:55,731 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1048 transitions. Word has length 66 [2024-11-24 01:48:55,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:48:55,731 INFO L471 AbstractCegarLoop]: Abstraction has 651 states and 1048 transitions. [2024-11-24 01:48:55,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:48:55,731 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1048 transitions. [2024-11-24 01:48:55,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-24 01:48:55,734 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:48:55,734 INFO L218 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:48:55,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 01:48:55,735 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:48:55,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:48:55,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1666116403, now seen corresponding path program 1 times [2024-11-24 01:48:55,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:48:55,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384060530] [2024-11-24 01:48:55,736 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:48:55,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:48:55,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:48:56,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:48:56,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:48:56,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384060530] [2024-11-24 01:48:56,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384060530] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:48:56,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:48:56,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:48:56,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58266349] [2024-11-24 01:48:56,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:48:56,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:48:56,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:48:56,018 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:48:56,018 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:48:56,019 INFO L87 Difference]: Start difference. First operand 651 states and 1048 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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) [2024-11-24 01:48:56,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:48:56,284 INFO L93 Difference]: Finished difference Result 2807 states and 4618 transitions. [2024-11-24 01:48:56,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 01:48:56,285 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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) Word has length 68 [2024-11-24 01:48:56,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:48:56,295 INFO L225 Difference]: With dead ends: 2807 [2024-11-24 01:48:56,295 INFO L226 Difference]: Without dead ends: 2213 [2024-11-24 01:48:56,296 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:48:56,297 INFO L435 NwaCegarLoop]: 219 mSDtfsCounter, 857 mSDsluCounter, 1398 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 1617 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:48:56,298 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 1617 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:48:56,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2213 states. [2024-11-24 01:48:56,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2213 to 1170. [2024-11-24 01:48:56,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1170 states, 1169 states have (on average 1.6236099230111207) internal successors, (1898), 1169 states have internal predecessors, (1898), 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) [2024-11-24 01:48:56,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 1898 transitions. [2024-11-24 01:48:56,357 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 1898 transitions. Word has length 68 [2024-11-24 01:48:56,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:48:56,357 INFO L471 AbstractCegarLoop]: Abstraction has 1170 states and 1898 transitions. [2024-11-24 01:48:56,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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) [2024-11-24 01:48:56,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 1898 transitions. [2024-11-24 01:48:56,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-24 01:48:56,365 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:48:56,365 INFO L218 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:48:56,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 01:48:56,365 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:48:56,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:48:56,366 INFO L85 PathProgramCache]: Analyzing trace with hash 47496755, now seen corresponding path program 1 times [2024-11-24 01:48:56,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:48:56,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777798209] [2024-11-24 01:48:56,366 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:48:56,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:48:56,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:48:56,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:48:56,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:48:56,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777798209] [2024-11-24 01:48:56,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777798209] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:48:56,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:48:56,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:48:56,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782239951] [2024-11-24 01:48:56,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:48:56,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:48:56,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:48:56,646 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:48:56,646 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:48:56,646 INFO L87 Difference]: Start difference. First operand 1170 states and 1898 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2024-11-24 01:48:56,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:48:56,770 INFO L93 Difference]: Finished difference Result 3409 states and 5599 transitions. [2024-11-24 01:48:56,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:48:56,771 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) Word has length 69 [2024-11-24 01:48:56,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:48:56,781 INFO L225 Difference]: With dead ends: 3409 [2024-11-24 01:48:56,782 INFO L226 Difference]: Without dead ends: 2296 [2024-11-24 01:48:56,786 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:48:56,787 INFO L435 NwaCegarLoop]: 222 mSDtfsCounter, 430 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:48:56,787 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [430 Valid, 662 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:48:56,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2296 states. [2024-11-24 01:48:56,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2296 to 1724. [2024-11-24 01:48:56,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1724 states, 1723 states have (on average 1.6297156123041208) internal successors, (2808), 1723 states have internal predecessors, (2808), 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) [2024-11-24 01:48:56,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1724 states to 1724 states and 2808 transitions. [2024-11-24 01:48:56,864 INFO L78 Accepts]: Start accepts. Automaton has 1724 states and 2808 transitions. Word has length 69 [2024-11-24 01:48:56,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:48:56,865 INFO L471 AbstractCegarLoop]: Abstraction has 1724 states and 2808 transitions. [2024-11-24 01:48:56,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2024-11-24 01:48:56,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1724 states and 2808 transitions. [2024-11-24 01:48:56,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-24 01:48:56,867 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:48:56,867 INFO L218 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:48:56,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 01:48:56,868 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:48:56,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:48:56,869 INFO L85 PathProgramCache]: Analyzing trace with hash -613931840, now seen corresponding path program 1 times [2024-11-24 01:48:56,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:48:56,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60597685] [2024-11-24 01:48:56,870 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:48:56,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:48:56,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:48:57,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:48:57,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:48:57,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60597685] [2024-11-24 01:48:57,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60597685] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:48:57,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:48:57,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:48:57,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540196512] [2024-11-24 01:48:57,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:48:57,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:48:57,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:48:57,014 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:48:57,014 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:48:57,014 INFO L87 Difference]: Start difference. First operand 1724 states and 2808 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-11-24 01:48:57,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:48:57,069 INFO L93 Difference]: Finished difference Result 3779 states and 6218 transitions. [2024-11-24 01:48:57,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:48:57,069 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) Word has length 70 [2024-11-24 01:48:57,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:48:57,080 INFO L225 Difference]: With dead ends: 3779 [2024-11-24 01:48:57,080 INFO L226 Difference]: Without dead ends: 2591 [2024-11-24 01:48:57,085 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:48:57,086 INFO L435 NwaCegarLoop]: 323 mSDtfsCounter, 132 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:48:57,086 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 512 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:48:57,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2591 states. [2024-11-24 01:48:57,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2591 to 2589. [2024-11-24 01:48:57,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2589 states, 2588 states have (on average 1.6333075734157652) internal successors, (4227), 2588 states have internal predecessors, (4227), 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) [2024-11-24 01:48:57,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2589 states to 2589 states and 4227 transitions. [2024-11-24 01:48:57,162 INFO L78 Accepts]: Start accepts. Automaton has 2589 states and 4227 transitions. Word has length 70 [2024-11-24 01:48:57,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:48:57,162 INFO L471 AbstractCegarLoop]: Abstraction has 2589 states and 4227 transitions. [2024-11-24 01:48:57,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-11-24 01:48:57,163 INFO L276 IsEmpty]: Start isEmpty. Operand 2589 states and 4227 transitions. [2024-11-24 01:48:57,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-24 01:48:57,164 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:48:57,164 INFO L218 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:48:57,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 01:48:57,165 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:48:57,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:48:57,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1843763252, now seen corresponding path program 1 times [2024-11-24 01:48:57,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:48:57,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906929668] [2024-11-24 01:48:57,166 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:48:57,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:48:57,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:48:57,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:48:57,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:48:57,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906929668] [2024-11-24 01:48:57,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906929668] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:48:57,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:48:57,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:48:57,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684714916] [2024-11-24 01:48:57,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:48:57,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:48:57,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:48:57,305 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:48:57,305 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:48:57,305 INFO L87 Difference]: Start difference. First operand 2589 states and 4227 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-11-24 01:48:57,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:48:57,365 INFO L93 Difference]: Finished difference Result 5033 states and 8246 transitions. [2024-11-24 01:48:57,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:48:57,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) Word has length 70 [2024-11-24 01:48:57,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:48:57,380 INFO L225 Difference]: With dead ends: 5033 [2024-11-24 01:48:57,380 INFO L226 Difference]: Without dead ends: 3599 [2024-11-24 01:48:57,383 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:48:57,384 INFO L435 NwaCegarLoop]: 308 mSDtfsCounter, 126 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:48:57,385 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 498 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:48:57,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3599 states. [2024-11-24 01:48:57,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3599 to 3597. [2024-11-24 01:48:57,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3597 states, 3596 states have (on average 1.628754171301446) internal successors, (5857), 3596 states have internal predecessors, (5857), 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) [2024-11-24 01:48:57,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3597 states to 3597 states and 5857 transitions. [2024-11-24 01:48:57,502 INFO L78 Accepts]: Start accepts. Automaton has 3597 states and 5857 transitions. Word has length 70 [2024-11-24 01:48:57,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:48:57,502 INFO L471 AbstractCegarLoop]: Abstraction has 3597 states and 5857 transitions. [2024-11-24 01:48:57,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-11-24 01:48:57,503 INFO L276 IsEmpty]: Start isEmpty. Operand 3597 states and 5857 transitions. [2024-11-24 01:48:57,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-24 01:48:57,503 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:48:57,504 INFO L218 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:48:57,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 01:48:57,504 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:48:57,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:48:57,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1414453242, now seen corresponding path program 1 times [2024-11-24 01:48:57,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:48:57,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901354437] [2024-11-24 01:48:57,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:48:57,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:48:57,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:48:57,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:48:57,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:48:57,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901354437] [2024-11-24 01:48:57,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901354437] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:48:57,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:48:57,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:48:57,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654488596] [2024-11-24 01:48:57,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:48:57,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:48:57,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:48:57,697 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:48:57,697 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:48:57,698 INFO L87 Difference]: Start difference. First operand 3597 states and 5857 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-11-24 01:48:57,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:48:57,900 INFO L93 Difference]: Finished difference Result 11303 states and 18475 transitions. [2024-11-24 01:48:57,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:48:57,901 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) Word has length 70 [2024-11-24 01:48:57,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:48:57,933 INFO L225 Difference]: With dead ends: 11303 [2024-11-24 01:48:57,933 INFO L226 Difference]: Without dead ends: 7781 [2024-11-24 01:48:57,938 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:48:57,939 INFO L435 NwaCegarLoop]: 213 mSDtfsCounter, 429 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:48:57,939 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 747 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:48:57,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7781 states. [2024-11-24 01:48:58,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7781 to 5670. [2024-11-24 01:48:58,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5670 states, 5669 states have (on average 1.6232139707179396) internal successors, (9202), 5669 states have internal predecessors, (9202), 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) [2024-11-24 01:48:58,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5670 states to 5670 states and 9202 transitions. [2024-11-24 01:48:58,109 INFO L78 Accepts]: Start accepts. Automaton has 5670 states and 9202 transitions. Word has length 70 [2024-11-24 01:48:58,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:48:58,110 INFO L471 AbstractCegarLoop]: Abstraction has 5670 states and 9202 transitions. [2024-11-24 01:48:58,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-11-24 01:48:58,110 INFO L276 IsEmpty]: Start isEmpty. Operand 5670 states and 9202 transitions. [2024-11-24 01:48:58,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-24 01:48:58,110 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:48:58,111 INFO L218 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:48:58,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 01:48:58,111 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:48:58,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:48:58,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1510229994, now seen corresponding path program 1 times [2024-11-24 01:48:58,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:48:58,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11644701] [2024-11-24 01:48:58,112 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:48:58,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:48:58,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:48:58,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:48:58,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:48:58,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11644701] [2024-11-24 01:48:58,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11644701] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:48:58,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:48:58,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:48:58,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809237152] [2024-11-24 01:48:58,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:48:58,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:48:58,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:48:58,239 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:48:58,239 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:48:58,239 INFO L87 Difference]: Start difference. First operand 5670 states and 9202 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-11-24 01:48:58,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:48:58,328 INFO L93 Difference]: Finished difference Result 11090 states and 18039 transitions. [2024-11-24 01:48:58,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:48:58,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) Word has length 70 [2024-11-24 01:48:58,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:48:58,371 INFO L225 Difference]: With dead ends: 11090 [2024-11-24 01:48:58,372 INFO L226 Difference]: Without dead ends: 7838 [2024-11-24 01:48:58,376 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:48:58,379 INFO L435 NwaCegarLoop]: 284 mSDtfsCounter, 120 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:48:58,379 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 475 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:48:58,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7838 states. [2024-11-24 01:48:58,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7838 to 7836. [2024-11-24 01:48:58,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7836 states, 7835 states have (on average 1.61531589023612) internal successors, (12656), 7835 states have internal predecessors, (12656), 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) [2024-11-24 01:48:58,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7836 states to 7836 states and 12656 transitions. [2024-11-24 01:48:58,655 INFO L78 Accepts]: Start accepts. Automaton has 7836 states and 12656 transitions. Word has length 70 [2024-11-24 01:48:58,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:48:58,655 INFO L471 AbstractCegarLoop]: Abstraction has 7836 states and 12656 transitions. [2024-11-24 01:48:58,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-11-24 01:48:58,656 INFO L276 IsEmpty]: Start isEmpty. Operand 7836 states and 12656 transitions. [2024-11-24 01:48:58,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-24 01:48:58,656 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:48:58,656 INFO L218 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:48:58,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 01:48:58,657 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:48:58,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:48:58,657 INFO L85 PathProgramCache]: Analyzing trace with hash 844989402, now seen corresponding path program 1 times [2024-11-24 01:48:58,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:48:58,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841596580] [2024-11-24 01:48:58,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:48:58,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:48:58,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:48:58,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:48:58,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:48:58,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841596580] [2024-11-24 01:48:58,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841596580] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:48:58,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:48:58,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:48:58,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135841843] [2024-11-24 01:48:58,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:48:58,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:48:58,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:48:58,845 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:48:58,845 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:48:58,845 INFO L87 Difference]: Start difference. First operand 7836 states and 12656 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2024-11-24 01:48:59,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:48:59,079 INFO L93 Difference]: Finished difference Result 24465 states and 39613 transitions. [2024-11-24 01:48:59,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:48:59,080 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) Word has length 71 [2024-11-24 01:48:59,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:48:59,126 INFO L225 Difference]: With dead ends: 24465 [2024-11-24 01:48:59,126 INFO L226 Difference]: Without dead ends: 16720 [2024-11-24 01:48:59,139 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:48:59,139 INFO L435 NwaCegarLoop]: 213 mSDtfsCounter, 427 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:48:59,140 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 749 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:48:59,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16720 states. [2024-11-24 01:48:59,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16720 to 12235. [2024-11-24 01:48:59,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12235 states, 12234 states have (on average 1.607242112146477) internal successors, (19663), 12234 states have internal predecessors, (19663), 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) [2024-11-24 01:48:59,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12235 states to 12235 states and 19663 transitions. [2024-11-24 01:48:59,624 INFO L78 Accepts]: Start accepts. Automaton has 12235 states and 19663 transitions. Word has length 71 [2024-11-24 01:48:59,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:48:59,624 INFO L471 AbstractCegarLoop]: Abstraction has 12235 states and 19663 transitions. [2024-11-24 01:48:59,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2024-11-24 01:48:59,625 INFO L276 IsEmpty]: Start isEmpty. Operand 12235 states and 19663 transitions. [2024-11-24 01:48:59,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-24 01:48:59,625 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:48:59,626 INFO L218 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:48:59,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 01:48:59,626 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:48:59,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:48:59,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1231314837, now seen corresponding path program 1 times [2024-11-24 01:48:59,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:48:59,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884762707] [2024-11-24 01:48:59,627 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:48:59,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:48:59,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:49:00,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:49:00,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:00,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884762707] [2024-11-24 01:49:00,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884762707] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:00,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:00,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:49:00,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790839895] [2024-11-24 01:49:00,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:00,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:49:00,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:00,045 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:49:00,045 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:49:00,046 INFO L87 Difference]: Start difference. First operand 12235 states and 19663 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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) [2024-11-24 01:49:00,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:49:00,251 INFO L93 Difference]: Finished difference Result 24381 states and 39202 transitions. [2024-11-24 01:49:00,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:49:00,252 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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) Word has length 73 [2024-11-24 01:49:00,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:49:00,283 INFO L225 Difference]: With dead ends: 24381 [2024-11-24 01:49:00,283 INFO L226 Difference]: Without dead ends: 12237 [2024-11-24 01:49:00,297 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:49:00,297 INFO L435 NwaCegarLoop]: 218 mSDtfsCounter, 120 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:49:00,298 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 800 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:49:00,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12237 states. [2024-11-24 01:49:00,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12237 to 12235. [2024-11-24 01:49:00,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12235 states, 12234 states have (on average 1.5970246853032533) internal successors, (19538), 12234 states have internal predecessors, (19538), 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) [2024-11-24 01:49:00,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12235 states to 12235 states and 19538 transitions. [2024-11-24 01:49:00,582 INFO L78 Accepts]: Start accepts. Automaton has 12235 states and 19538 transitions. Word has length 73 [2024-11-24 01:49:00,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:49:00,582 INFO L471 AbstractCegarLoop]: Abstraction has 12235 states and 19538 transitions. [2024-11-24 01:49:00,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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) [2024-11-24 01:49:00,583 INFO L276 IsEmpty]: Start isEmpty. Operand 12235 states and 19538 transitions. [2024-11-24 01:49:00,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-24 01:49:00,590 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:49:00,590 INFO L218 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:49:00,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-24 01:49:00,590 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:49:00,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:00,591 INFO L85 PathProgramCache]: Analyzing trace with hash -833180180, now seen corresponding path program 1 times [2024-11-24 01:49:00,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:00,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218838359] [2024-11-24 01:49:00,591 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:49:00,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:00,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:49:00,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:49:00,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:00,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218838359] [2024-11-24 01:49:00,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218838359] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:00,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:00,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:49:00,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738893681] [2024-11-24 01:49:00,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:00,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:49:00,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:00,971 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:49:00,971 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:49:00,972 INFO L87 Difference]: Start difference. First operand 12235 states and 19538 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2024-11-24 01:49:01,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:49:01,216 INFO L93 Difference]: Finished difference Result 35013 states and 56062 transitions. [2024-11-24 01:49:01,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:49:01,216 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) Word has length 76 [2024-11-24 01:49:01,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:49:01,284 INFO L225 Difference]: With dead ends: 35013 [2024-11-24 01:49:01,284 INFO L226 Difference]: Without dead ends: 22869 [2024-11-24 01:49:01,302 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:49:01,302 INFO L435 NwaCegarLoop]: 215 mSDtfsCounter, 352 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:49:01,303 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 613 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:49:01,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22869 states. [2024-11-24 01:49:01,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22869 to 22867. [2024-11-24 01:49:01,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22867 states, 22866 states have (on average 1.585716784745911) internal successors, (36259), 22866 states have internal predecessors, (36259), 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) [2024-11-24 01:49:01,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22867 states to 22867 states and 36259 transitions. [2024-11-24 01:49:01,878 INFO L78 Accepts]: Start accepts. Automaton has 22867 states and 36259 transitions. Word has length 76 [2024-11-24 01:49:01,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:49:01,878 INFO L471 AbstractCegarLoop]: Abstraction has 22867 states and 36259 transitions. [2024-11-24 01:49:01,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2024-11-24 01:49:01,878 INFO L276 IsEmpty]: Start isEmpty. Operand 22867 states and 36259 transitions. [2024-11-24 01:49:01,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-24 01:49:01,879 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:49:01,879 INFO L218 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:49:01,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-24 01:49:01,880 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:49:01,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:01,880 INFO L85 PathProgramCache]: Analyzing trace with hash -60691096, now seen corresponding path program 1 times [2024-11-24 01:49:01,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:01,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047795996] [2024-11-24 01:49:01,881 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:49:01,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:01,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:49:02,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:49:02,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:02,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047795996] [2024-11-24 01:49:02,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047795996] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:02,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:02,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:49:02,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761925871] [2024-11-24 01:49:02,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:02,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:49:02,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:02,497 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:49:02,497 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:49:02,498 INFO L87 Difference]: Start difference. First operand 22867 states and 36259 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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) [2024-11-24 01:49:02,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:49:02,715 INFO L93 Difference]: Finished difference Result 23593 states and 37346 transitions. [2024-11-24 01:49:02,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:49:02,715 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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) Word has length 77 [2024-11-24 01:49:02,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:49:02,768 INFO L225 Difference]: With dead ends: 23593 [2024-11-24 01:49:02,768 INFO L226 Difference]: Without dead ends: 23591 [2024-11-24 01:49:02,774 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:49:02,775 INFO L435 NwaCegarLoop]: 221 mSDtfsCounter, 0 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:49:02,775 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 867 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:49:02,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23591 states. [2024-11-24 01:49:02,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23591 to 23591. [2024-11-24 01:49:03,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23591 states, 23590 states have (on average 1.5673590504451038) internal successors, (36974), 23590 states have internal predecessors, (36974), 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) [2024-11-24 01:49:03,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23591 states to 23591 states and 36974 transitions. [2024-11-24 01:49:03,140 INFO L78 Accepts]: Start accepts. Automaton has 23591 states and 36974 transitions. Word has length 77 [2024-11-24 01:49:03,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:49:03,141 INFO L471 AbstractCegarLoop]: Abstraction has 23591 states and 36974 transitions. [2024-11-24 01:49:03,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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) [2024-11-24 01:49:03,141 INFO L276 IsEmpty]: Start isEmpty. Operand 23591 states and 36974 transitions. [2024-11-24 01:49:03,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-24 01:49:03,144 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:49:03,144 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:49:03,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 01:49:03,144 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:49:03,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:03,145 INFO L85 PathProgramCache]: Analyzing trace with hash -713806321, now seen corresponding path program 1 times [2024-11-24 01:49:03,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:03,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171580131] [2024-11-24 01:49:03,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:49:03,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:03,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:49:03,328 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:49:03,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:03,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171580131] [2024-11-24 01:49:03,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171580131] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:03,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:03,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:49:03,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933110094] [2024-11-24 01:49:03,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:03,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:49:03,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:03,330 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:49:03,330 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:49:03,331 INFO L87 Difference]: Start difference. First operand 23591 states and 36974 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2024-11-24 01:49:03,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:49:03,572 INFO L93 Difference]: Finished difference Result 54506 states and 85848 transitions. [2024-11-24 01:49:03,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:49:03,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) Word has length 101 [2024-11-24 01:49:03,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:49:03,690 INFO L225 Difference]: With dead ends: 54506 [2024-11-24 01:49:03,690 INFO L226 Difference]: Without dead ends: 43144 [2024-11-24 01:49:03,710 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:49:03,711 INFO L435 NwaCegarLoop]: 213 mSDtfsCounter, 110 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:49:03,711 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 404 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:49:03,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43144 states. [2024-11-24 01:49:04,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43144 to 43092. [2024-11-24 01:49:04,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43092 states, 43091 states have (on average 1.5705367710194704) internal successors, (67676), 43091 states have internal predecessors, (67676), 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) [2024-11-24 01:49:04,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43092 states to 43092 states and 67676 transitions. [2024-11-24 01:49:04,555 INFO L78 Accepts]: Start accepts. Automaton has 43092 states and 67676 transitions. Word has length 101 [2024-11-24 01:49:04,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:49:04,555 INFO L471 AbstractCegarLoop]: Abstraction has 43092 states and 67676 transitions. [2024-11-24 01:49:04,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2024-11-24 01:49:04,555 INFO L276 IsEmpty]: Start isEmpty. Operand 43092 states and 67676 transitions. [2024-11-24 01:49:04,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-24 01:49:04,558 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:49:04,558 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:49:04,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-24 01:49:04,558 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:49:04,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:04,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1943637733, now seen corresponding path program 1 times [2024-11-24 01:49:04,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:04,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890696277] [2024-11-24 01:49:04,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:49:04,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:04,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:49:04,785 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-24 01:49:04,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:04,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890696277] [2024-11-24 01:49:04,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890696277] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:04,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:04,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:49:04,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335783784] [2024-11-24 01:49:04,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:04,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:49:04,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:04,787 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:49:04,787 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:49:04,787 INFO L87 Difference]: Start difference. First operand 43092 states and 67676 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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) [2024-11-24 01:49:05,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:49:05,585 INFO L93 Difference]: Finished difference Result 105901 states and 166677 transitions. [2024-11-24 01:49:05,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:49:05,586 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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) Word has length 101 [2024-11-24 01:49:05,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:49:05,833 INFO L225 Difference]: With dead ends: 105901 [2024-11-24 01:49:05,834 INFO L226 Difference]: Without dead ends: 85805 [2024-11-24 01:49:05,868 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:49:05,868 INFO L435 NwaCegarLoop]: 354 mSDtfsCounter, 550 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 973 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:49:05,869 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 973 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:49:05,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85805 states. [2024-11-24 01:49:07,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85805 to 66703. [2024-11-24 01:49:07,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66703 states, 66702 states have (on average 1.5682138466612696) internal successors, (104603), 66702 states have internal predecessors, (104603), 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) [2024-11-24 01:49:07,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66703 states to 66703 states and 104603 transitions. [2024-11-24 01:49:07,534 INFO L78 Accepts]: Start accepts. Automaton has 66703 states and 104603 transitions. Word has length 101 [2024-11-24 01:49:07,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:49:07,534 INFO L471 AbstractCegarLoop]: Abstraction has 66703 states and 104603 transitions. [2024-11-24 01:49:07,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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) [2024-11-24 01:49:07,535 INFO L276 IsEmpty]: Start isEmpty. Operand 66703 states and 104603 transitions. [2024-11-24 01:49:07,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-24 01:49:07,537 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:49:07,537 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:49:07,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-24 01:49:07,538 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:49:07,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:07,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1410355513, now seen corresponding path program 1 times [2024-11-24 01:49:07,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:07,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731668326] [2024-11-24 01:49:07,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:49:07,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:07,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:49:07,785 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-24 01:49:07,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:07,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731668326] [2024-11-24 01:49:07,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731668326] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:07,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:07,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:49:07,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740218250] [2024-11-24 01:49:07,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:07,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:49:07,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:07,788 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:49:07,789 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:49:07,789 INFO L87 Difference]: Start difference. First operand 66703 states and 104603 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 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) [2024-11-24 01:49:08,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:49:08,371 INFO L93 Difference]: Finished difference Result 113881 states and 179249 transitions. [2024-11-24 01:49:08,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:49:08,372 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 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) Word has length 101 [2024-11-24 01:49:08,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:49:08,551 INFO L225 Difference]: With dead ends: 113881 [2024-11-24 01:49:08,551 INFO L226 Difference]: Without dead ends: 93785 [2024-11-24 01:49:08,589 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:49:08,591 INFO L435 NwaCegarLoop]: 352 mSDtfsCounter, 558 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:49:08,591 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [558 Valid, 961 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:49:08,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93785 states. [2024-11-24 01:49:10,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93785 to 90203. [2024-11-24 01:49:10,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90203 states, 90202 states have (on average 1.568579410656083) internal successors, (141489), 90202 states have internal predecessors, (141489), 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) [2024-11-24 01:49:10,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90203 states to 90203 states and 141489 transitions. [2024-11-24 01:49:10,597 INFO L78 Accepts]: Start accepts. Automaton has 90203 states and 141489 transitions. Word has length 101 [2024-11-24 01:49:10,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:49:10,598 INFO L471 AbstractCegarLoop]: Abstraction has 90203 states and 141489 transitions. [2024-11-24 01:49:10,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 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) [2024-11-24 01:49:10,598 INFO L276 IsEmpty]: Start isEmpty. Operand 90203 states and 141489 transitions. [2024-11-24 01:49:10,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-24 01:49:10,601 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:49:10,601 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:49:10,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-24 01:49:10,601 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:49:10,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:10,602 INFO L85 PathProgramCache]: Analyzing trace with hash -366975703, now seen corresponding path program 1 times [2024-11-24 01:49:10,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:10,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698691951] [2024-11-24 01:49:10,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:49:10,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:10,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:49:10,824 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 01:49:10,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:10,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698691951] [2024-11-24 01:49:10,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698691951] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:10,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:10,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:49:10,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598819310] [2024-11-24 01:49:10,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:10,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:49:10,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:10,828 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:49:10,828 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:49:10,828 INFO L87 Difference]: Start difference. First operand 90203 states and 141489 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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) [2024-11-24 01:49:11,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:49:11,401 INFO L93 Difference]: Finished difference Result 146008 states and 229758 transitions. [2024-11-24 01:49:11,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:49:11,402 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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) Word has length 102 [2024-11-24 01:49:11,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:49:12,121 INFO L225 Difference]: With dead ends: 146008 [2024-11-24 01:49:12,121 INFO L226 Difference]: Without dead ends: 93993 [2024-11-24 01:49:12,146 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:49:12,147 INFO L435 NwaCegarLoop]: 357 mSDtfsCounter, 241 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:49:12,147 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 767 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:49:12,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93993 states. [2024-11-24 01:49:13,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93993 to 63125. [2024-11-24 01:49:13,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63125 states, 63124 states have (on average 1.5641752740637476) internal successors, (98737), 63124 states have internal predecessors, (98737), 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) [2024-11-24 01:49:13,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63125 states to 63125 states and 98737 transitions. [2024-11-24 01:49:13,565 INFO L78 Accepts]: Start accepts. Automaton has 63125 states and 98737 transitions. Word has length 102 [2024-11-24 01:49:13,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:49:13,566 INFO L471 AbstractCegarLoop]: Abstraction has 63125 states and 98737 transitions. [2024-11-24 01:49:13,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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) [2024-11-24 01:49:13,566 INFO L276 IsEmpty]: Start isEmpty. Operand 63125 states and 98737 transitions. [2024-11-24 01:49:13,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-24 01:49:13,569 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:49:13,569 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:49:13,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-24 01:49:13,570 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:49:13,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:13,570 INFO L85 PathProgramCache]: Analyzing trace with hash 921631357, now seen corresponding path program 1 times [2024-11-24 01:49:13,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:13,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009521781] [2024-11-24 01:49:13,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:49:13,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:13,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:49:13,701 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:49:13,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:13,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009521781] [2024-11-24 01:49:13,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009521781] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:13,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:13,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:49:13,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453046868] [2024-11-24 01:49:13,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:13,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:49:13,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:13,703 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:49:13,703 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:49:13,703 INFO L87 Difference]: Start difference. First operand 63125 states and 98737 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2024-11-24 01:49:14,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:49:14,399 INFO L93 Difference]: Finished difference Result 185559 states and 289928 transitions. [2024-11-24 01:49:14,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:49:14,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) Word has length 102 [2024-11-24 01:49:14,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:49:14,663 INFO L225 Difference]: With dead ends: 185559 [2024-11-24 01:49:14,663 INFO L226 Difference]: Without dead ends: 122525 [2024-11-24 01:49:14,767 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:49:14,767 INFO L435 NwaCegarLoop]: 327 mSDtfsCounter, 171 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:49:14,768 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 543 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:49:14,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122525 states. [2024-11-24 01:49:17,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122525 to 122523. [2024-11-24 01:49:17,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122523 states, 122522 states have (on average 1.552202869688709) internal successors, (190179), 122522 states have internal predecessors, (190179), 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) [2024-11-24 01:49:17,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122523 states to 122523 states and 190179 transitions. [2024-11-24 01:49:17,315 INFO L78 Accepts]: Start accepts. Automaton has 122523 states and 190179 transitions. Word has length 102 [2024-11-24 01:49:17,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:49:17,316 INFO L471 AbstractCegarLoop]: Abstraction has 122523 states and 190179 transitions. [2024-11-24 01:49:17,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2024-11-24 01:49:17,316 INFO L276 IsEmpty]: Start isEmpty. Operand 122523 states and 190179 transitions. [2024-11-24 01:49:17,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-24 01:49:17,320 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:49:17,321 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:49:17,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-24 01:49:17,321 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:49:17,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:17,322 INFO L85 PathProgramCache]: Analyzing trace with hash 449051975, now seen corresponding path program 1 times [2024-11-24 01:49:17,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:17,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696272941] [2024-11-24 01:49:17,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:49:17,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:17,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:49:17,433 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:49:17,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:17,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696272941] [2024-11-24 01:49:17,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696272941] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:17,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:17,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:49:17,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629683393] [2024-11-24 01:49:17,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:17,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:49:17,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:17,435 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:49:17,435 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:49:17,435 INFO L87 Difference]: Start difference. First operand 122523 states and 190179 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2024-11-24 01:49:19,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:49:19,122 INFO L93 Difference]: Finished difference Result 359965 states and 558013 transitions. [2024-11-24 01:49:19,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:49:19,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) Word has length 102 [2024-11-24 01:49:19,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:49:19,607 INFO L225 Difference]: With dead ends: 359965 [2024-11-24 01:49:19,607 INFO L226 Difference]: Without dead ends: 237583 [2024-11-24 01:49:19,693 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:49:19,694 INFO L435 NwaCegarLoop]: 291 mSDtfsCounter, 152 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:49:19,694 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 507 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:49:19,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237583 states. [2024-11-24 01:49:23,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237583 to 237581. [2024-11-24 01:49:23,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237581 states, 237580 states have (on average 1.5394603922889132) internal successors, (365745), 237580 states have internal predecessors, (365745), 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) [2024-11-24 01:49:23,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237581 states to 237581 states and 365745 transitions. [2024-11-24 01:49:23,750 INFO L78 Accepts]: Start accepts. Automaton has 237581 states and 365745 transitions. Word has length 102 [2024-11-24 01:49:23,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:49:23,750 INFO L471 AbstractCegarLoop]: Abstraction has 237581 states and 365745 transitions. [2024-11-24 01:49:23,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2024-11-24 01:49:23,750 INFO L276 IsEmpty]: Start isEmpty. Operand 237581 states and 365745 transitions. [2024-11-24 01:49:23,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-24 01:49:23,758 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:49:23,758 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:49:23,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-24 01:49:23,759 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:49:23,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:23,760 INFO L85 PathProgramCache]: Analyzing trace with hash -542283200, now seen corresponding path program 1 times [2024-11-24 01:49:23,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:23,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893103776] [2024-11-24 01:49:23,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:49:23,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:23,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:49:23,862 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-24 01:49:23,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:23,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893103776] [2024-11-24 01:49:23,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893103776] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:23,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:23,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:49:23,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406898085] [2024-11-24 01:49:23,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:23,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:49:23,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:23,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:49:23,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:49:23,864 INFO L87 Difference]: Start difference. First operand 237581 states and 365745 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) [2024-11-24 01:49:27,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:49:27,219 INFO L93 Difference]: Finished difference Result 577047 states and 892021 transitions. [2024-11-24 01:49:27,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:49:27,220 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) Word has length 103 [2024-11-24 01:49:27,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:49:27,747 INFO L225 Difference]: With dead ends: 577047 [2024-11-24 01:49:27,747 INFO L226 Difference]: Without dead ends: 339741 [2024-11-24 01:49:27,858 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:49:27,859 INFO L435 NwaCegarLoop]: 227 mSDtfsCounter, 131 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:49:27,859 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 429 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:49:28,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339741 states. [2024-11-24 01:49:32,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339741 to 330199. [2024-11-24 01:49:32,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330199 states, 330198 states have (on average 1.53116917728151) internal successors, (505589), 330198 states have internal predecessors, (505589), 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) [2024-11-24 01:49:33,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330199 states to 330199 states and 505589 transitions. [2024-11-24 01:49:33,810 INFO L78 Accepts]: Start accepts. Automaton has 330199 states and 505589 transitions. Word has length 103 [2024-11-24 01:49:33,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:49:33,810 INFO L471 AbstractCegarLoop]: Abstraction has 330199 states and 505589 transitions. [2024-11-24 01:49:33,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) [2024-11-24 01:49:33,810 INFO L276 IsEmpty]: Start isEmpty. Operand 330199 states and 505589 transitions. [2024-11-24 01:49:33,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-24 01:49:33,816 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:49:33,817 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:49:33,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-24 01:49:33,817 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:49:33,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:33,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1444011090, now seen corresponding path program 1 times [2024-11-24 01:49:33,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:33,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201684138] [2024-11-24 01:49:33,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:49:33,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:33,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:49:33,986 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-24 01:49:33,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:49:33,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201684138] [2024-11-24 01:49:33,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201684138] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:49:33,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:49:33,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:49:33,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39861461] [2024-11-24 01:49:33,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:49:33,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:49:33,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:49:33,988 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:49:33,988 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:49:33,988 INFO L87 Difference]: Start difference. First operand 330199 states and 505589 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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) [2024-11-24 01:49:37,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:49:37,395 INFO L93 Difference]: Finished difference Result 802183 states and 1233511 transitions. [2024-11-24 01:49:37,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:49:37,395 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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) Word has length 103 [2024-11-24 01:49:37,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:49:38,065 INFO L225 Difference]: With dead ends: 802183 [2024-11-24 01:49:38,065 INFO L226 Difference]: Without dead ends: 472283 [2024-11-24 01:49:38,206 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:49:38,207 INFO L435 NwaCegarLoop]: 225 mSDtfsCounter, 125 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:49:38,207 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 428 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:49:38,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472283 states.