./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-3.i --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_38c93910-b627-49fc-84b0-ae35025418bd/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38c93910-b627-49fc-84b0-ae35025418bd/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_38c93910-b627-49fc-84b0-ae35025418bd/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38c93910-b627-49fc-84b0-ae35025418bd/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38c93910-b627-49fc-84b0-ae35025418bd/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_38c93910-b627-49fc-84b0-ae35025418bd/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 81f9c885cba2dee1faa6ea50c6c887a8afbb04e68b15a3a5c9caa87415ef3349 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:23:53,738 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:23:53,867 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38c93910-b627-49fc-84b0-ae35025418bd/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 01:23:53,875 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:23:53,875 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:23:53,911 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:23:53,912 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:23:53,913 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:23:53,913 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:23:53,913 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:23:53,914 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:23:53,914 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:23:53,914 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:23:53,915 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:23:53,915 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:23:53,915 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:23:53,915 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:23:53,916 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 01:23:53,916 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:23:53,916 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 01:23:53,916 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:23:53,916 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:23:53,917 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:23:53,917 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:23:53,917 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 01:23:53,917 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:23:53,917 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:23:53,918 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:23:53,918 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:23:53,918 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:23:53,918 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:23:53,918 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:23:53,919 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:23:53,919 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:23:53,919 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:23:53,919 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:23:53,919 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:23:53,920 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:23:53,920 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:23:53,920 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:23:53,920 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:23:53,920 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:23:53,920 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:23:53,921 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:23:53,921 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:23:53,921 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:23:53,921 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:23:53,921 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:23:53,921 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_38c93910-b627-49fc-84b0-ae35025418bd/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 -> 81f9c885cba2dee1faa6ea50c6c887a8afbb04e68b15a3a5c9caa87415ef3349 [2024-11-24 01:23:54,272 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:23:54,284 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:23:54,287 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:23:54,289 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:23:54,289 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:23:54,291 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38c93910-b627-49fc-84b0-ae35025418bd/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-3.i [2024-11-24 01:23:58,249 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38c93910-b627-49fc-84b0-ae35025418bd/bin/uautomizer-verify-LYvppIcaGC/data/36b5a2442/12d5cb259eae4513b81dcbfd87c5e151/FLAGdd75f5892 [2024-11-24 01:23:58,646 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:23:58,647 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38c93910-b627-49fc-84b0-ae35025418bd/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-3.i [2024-11-24 01:23:58,659 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38c93910-b627-49fc-84b0-ae35025418bd/bin/uautomizer-verify-LYvppIcaGC/data/36b5a2442/12d5cb259eae4513b81dcbfd87c5e151/FLAGdd75f5892 [2024-11-24 01:23:58,680 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38c93910-b627-49fc-84b0-ae35025418bd/bin/uautomizer-verify-LYvppIcaGC/data/36b5a2442/12d5cb259eae4513b81dcbfd87c5e151 [2024-11-24 01:23:58,684 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:23:58,686 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:23:58,688 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:23:58,688 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:23:58,695 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:23:58,696 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:23:58" (1/1) ... [2024-11-24 01:23:58,698 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29ad7792 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:23:58, skipping insertion in model container [2024-11-24 01:23:58,698 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:23:58" (1/1) ... [2024-11-24 01:23:58,732 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:23:58,961 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_38c93910-b627-49fc-84b0-ae35025418bd/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-3.i[918,931] [2024-11-24 01:23:59,112 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:23:59,131 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:23:59,145 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_38c93910-b627-49fc-84b0-ae35025418bd/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-3.i[918,931] [2024-11-24 01:23:59,242 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:23:59,272 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:23:59,273 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:23:59 WrapperNode [2024-11-24 01:23:59,273 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:23:59,275 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:23:59,275 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:23:59,275 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:23:59,287 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:23:59" (1/1) ... [2024-11-24 01:23:59,312 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:23:59" (1/1) ... [2024-11-24 01:23:59,378 INFO L138 Inliner]: procedures = 26, calls = 47, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 273 [2024-11-24 01:23:59,379 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:23:59,380 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:23:59,380 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:23:59,380 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:23:59,393 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:23:59" (1/1) ... [2024-11-24 01:23:59,393 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:23:59" (1/1) ... [2024-11-24 01:23:59,403 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:23:59" (1/1) ... [2024-11-24 01:23:59,441 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 01:23:59,442 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:23:59" (1/1) ... [2024-11-24 01:23:59,442 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:23:59" (1/1) ... [2024-11-24 01:23:59,472 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:23:59" (1/1) ... [2024-11-24 01:23:59,474 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:23:59" (1/1) ... [2024-11-24 01:23:59,488 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:23:59" (1/1) ... [2024-11-24 01:23:59,497 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:23:59" (1/1) ... [2024-11-24 01:23:59,500 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:23:59" (1/1) ... [2024-11-24 01:23:59,514 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:23:59,515 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:23:59,519 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:23:59,519 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:23:59,521 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:23:59" (1/1) ... [2024-11-24 01:23:59,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:23:59,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38c93910-b627-49fc-84b0-ae35025418bd/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:23:59,565 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38c93910-b627-49fc-84b0-ae35025418bd/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:23:59,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38c93910-b627-49fc-84b0-ae35025418bd/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:23:59,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:23:59,602 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 01:23:59,603 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 01:23:59,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 01:23:59,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:23:59,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:23:59,711 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:23:59,716 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:24:00,720 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-11-24 01:24:00,720 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:24:00,745 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:24:00,746 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-24 01:24:00,746 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:24:00 BoogieIcfgContainer [2024-11-24 01:24:00,749 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:24:00,752 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:24:00,752 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:24:00,760 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:24:00,760 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:23:58" (1/3) ... [2024-11-24 01:24:00,761 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51d25a92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:24:00, skipping insertion in model container [2024-11-24 01:24:00,761 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:23:59" (2/3) ... [2024-11-24 01:24:00,762 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51d25a92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:24:00, skipping insertion in model container [2024-11-24 01:24:00,762 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:24:00" (3/3) ... [2024-11-24 01:24:00,763 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-co_file-3.i [2024-11-24 01:24:00,784 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:24:00,786 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-pr-co_file-3.i that has 2 procedures, 123 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 01:24:00,870 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:24:00,885 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;@11d91f7c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:24:00,885 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 01:24:00,892 INFO L276 IsEmpty]: Start isEmpty. Operand has 123 states, 86 states have (on average 1.5116279069767442) internal successors, (130), 87 states have internal predecessors, (130), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-24 01:24:00,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-24 01:24:00,914 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:24:00,915 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:24:00,915 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:24:00,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:24:00,924 INFO L85 PathProgramCache]: Analyzing trace with hash -73510540, now seen corresponding path program 1 times [2024-11-24 01:24:00,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:24:00,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559255971] [2024-11-24 01:24:00,938 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:24:00,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:24:01,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:24:01,558 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2024-11-24 01:24:01,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:24:01,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559255971] [2024-11-24 01:24:01,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559255971] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:24:01,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102434133] [2024-11-24 01:24:01,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:24:01,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:24:01,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38c93910-b627-49fc-84b0-ae35025418bd/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:24:01,564 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38c93910-b627-49fc-84b0-ae35025418bd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:24:01,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38c93910-b627-49fc-84b0-ae35025418bd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 01:24:01,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:24:01,938 INFO L256 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-24 01:24:01,950 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:24:02,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2024-11-24 01:24:02,026 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:24:02,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102434133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:24:02,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:24:02,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-24 01:24:02,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397718240] [2024-11-24 01:24:02,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:24:02,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 01:24:02,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:24:02,070 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 01:24:02,071 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 01:24:02,076 INFO L87 Difference]: Start difference. First operand has 123 states, 86 states have (on average 1.5116279069767442) internal successors, (130), 87 states have internal predecessors, (130), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-24 01:24:02,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:24:02,178 INFO L93 Difference]: Finished difference Result 239 states and 424 transitions. [2024-11-24 01:24:02,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 01:24:02,184 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) Word has length 221 [2024-11-24 01:24:02,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:24:02,199 INFO L225 Difference]: With dead ends: 239 [2024-11-24 01:24:02,200 INFO L226 Difference]: Without dead ends: 119 [2024-11-24 01:24:02,206 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 01:24:02,212 INFO L435 NwaCegarLoop]: 188 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:24:02,213 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:24:02,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-24 01:24:02,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2024-11-24 01:24:02,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 83 states have (on average 1.4457831325301205) internal successors, (120), 83 states have internal predecessors, (120), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-24 01:24:02,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 188 transitions. [2024-11-24 01:24:02,278 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 188 transitions. Word has length 221 [2024-11-24 01:24:02,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:24:02,279 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 188 transitions. [2024-11-24 01:24:02,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-24 01:24:02,279 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 188 transitions. [2024-11-24 01:24:02,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2024-11-24 01:24:02,285 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:24:02,285 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:24:02,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38c93910-b627-49fc-84b0-ae35025418bd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 01:24:02,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38c93910-b627-49fc-84b0-ae35025418bd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-24 01:24:02,490 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:24:02,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:24:02,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1698533249, now seen corresponding path program 1 times [2024-11-24 01:24:02,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:24:02,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135346368] [2024-11-24 01:24:02,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:24:02,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:24:02,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:24:03,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-24 01:24:03,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:24:03,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135346368] [2024-11-24 01:24:03,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135346368] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:24:03,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:24:03,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:24:03,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654245408] [2024-11-24 01:24:03,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:24:03,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:24:03,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:24:03,231 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:24:03,232 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:24:03,232 INFO L87 Difference]: Start difference. First operand 119 states and 188 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-24 01:24:03,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:24:03,420 INFO L93 Difference]: Finished difference Result 348 states and 553 transitions. [2024-11-24 01:24:03,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:24:03,421 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 223 [2024-11-24 01:24:03,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:24:03,429 INFO L225 Difference]: With dead ends: 348 [2024-11-24 01:24:03,433 INFO L226 Difference]: Without dead ends: 232 [2024-11-24 01:24:03,434 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 01:24:03,436 INFO L435 NwaCegarLoop]: 176 mSDtfsCounter, 182 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:24:03,436 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 346 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:24:03,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-11-24 01:24:03,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 229. [2024-11-24 01:24:03,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 158 states have (on average 1.4493670886075949) internal successors, (229), 158 states have internal predecessors, (229), 68 states have call successors, (68), 2 states have call predecessors, (68), 2 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-24 01:24:03,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 365 transitions. [2024-11-24 01:24:03,519 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 365 transitions. Word has length 223 [2024-11-24 01:24:03,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:24:03,522 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 365 transitions. [2024-11-24 01:24:03,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-24 01:24:03,525 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 365 transitions. [2024-11-24 01:24:03,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2024-11-24 01:24:03,534 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:24:03,534 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:24:03,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 01:24:03,535 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:24:03,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:24:03,538 INFO L85 PathProgramCache]: Analyzing trace with hash -2039355589, now seen corresponding path program 1 times [2024-11-24 01:24:03,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:24:03,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032350019] [2024-11-24 01:24:03,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:24:03,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:24:03,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:24:04,003 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-24 01:24:04,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:24:04,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032350019] [2024-11-24 01:24:04,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032350019] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:24:04,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:24:04,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:24:04,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588522350] [2024-11-24 01:24:04,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:24:04,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:24:04,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:24:04,012 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:24:04,012 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:24:04,012 INFO L87 Difference]: Start difference. First operand 229 states and 365 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-24 01:24:04,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:24:04,271 INFO L93 Difference]: Finished difference Result 669 states and 1072 transitions. [2024-11-24 01:24:04,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:24:04,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 224 [2024-11-24 01:24:04,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:24:04,284 INFO L225 Difference]: With dead ends: 669 [2024-11-24 01:24:04,284 INFO L226 Difference]: Without dead ends: 443 [2024-11-24 01:24:04,286 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 01:24:04,289 INFO L435 NwaCegarLoop]: 290 mSDtfsCounter, 160 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:24:04,290 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 443 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:24:04,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2024-11-24 01:24:04,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 441. [2024-11-24 01:24:04,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 300 states have (on average 1.4266666666666667) internal successors, (428), 300 states have internal predecessors, (428), 136 states have call successors, (136), 4 states have call predecessors, (136), 4 states have return successors, (136), 136 states have call predecessors, (136), 136 states have call successors, (136) [2024-11-24 01:24:04,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 700 transitions. [2024-11-24 01:24:04,424 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 700 transitions. Word has length 224 [2024-11-24 01:24:04,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:24:04,425 INFO L471 AbstractCegarLoop]: Abstraction has 441 states and 700 transitions. [2024-11-24 01:24:04,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-24 01:24:04,426 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 700 transitions. [2024-11-24 01:24:04,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-11-24 01:24:04,432 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:24:04,433 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:24:04,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 01:24:04,435 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:24:04,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:24:04,438 INFO L85 PathProgramCache]: Analyzing trace with hash 422208375, now seen corresponding path program 1 times [2024-11-24 01:24:04,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:24:04,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476923276] [2024-11-24 01:24:04,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:24:04,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:24:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:24:05,144 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-24 01:24:05,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:24:05,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476923276] [2024-11-24 01:24:05,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476923276] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:24:05,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:24:05,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:24:05,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407160504] [2024-11-24 01:24:05,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:24:05,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:24:05,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:24:05,148 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:24:05,148 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:24:05,148 INFO L87 Difference]: Start difference. First operand 441 states and 700 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-24 01:24:05,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:24:05,467 INFO L93 Difference]: Finished difference Result 1317 states and 2094 transitions. [2024-11-24 01:24:05,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:24:05,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 225 [2024-11-24 01:24:05,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:24:05,482 INFO L225 Difference]: With dead ends: 1317 [2024-11-24 01:24:05,482 INFO L226 Difference]: Without dead ends: 879 [2024-11-24 01:24:05,485 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 01:24:05,489 INFO L435 NwaCegarLoop]: 197 mSDtfsCounter, 109 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:24:05,491 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 357 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:24:05,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2024-11-24 01:24:05,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 877. [2024-11-24 01:24:05,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 596 states have (on average 1.4093959731543624) internal successors, (840), 596 states have internal predecessors, (840), 272 states have call successors, (272), 8 states have call predecessors, (272), 8 states have return successors, (272), 272 states have call predecessors, (272), 272 states have call successors, (272) [2024-11-24 01:24:05,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1384 transitions. [2024-11-24 01:24:05,735 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1384 transitions. Word has length 225 [2024-11-24 01:24:05,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:24:05,737 INFO L471 AbstractCegarLoop]: Abstraction has 877 states and 1384 transitions. [2024-11-24 01:24:05,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-24 01:24:05,737 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1384 transitions. [2024-11-24 01:24:05,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2024-11-24 01:24:05,745 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:24:05,745 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:24:05,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 01:24:05,746 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:24:05,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:24:05,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1947342593, now seen corresponding path program 1 times [2024-11-24 01:24:05,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:24:05,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429712617] [2024-11-24 01:24:05,747 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:24:05,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:24:05,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:24:06,007 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-24 01:24:06,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:24:06,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429712617] [2024-11-24 01:24:06,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429712617] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:24:06,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:24:06,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:24:06,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930861311] [2024-11-24 01:24:06,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:24:06,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:24:06,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:24:06,011 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:24:06,011 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:24:06,011 INFO L87 Difference]: Start difference. First operand 877 states and 1384 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-24 01:24:06,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:24:06,218 INFO L93 Difference]: Finished difference Result 2145 states and 3370 transitions. [2024-11-24 01:24:06,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:24:06,220 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 226 [2024-11-24 01:24:06,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:24:06,231 INFO L225 Difference]: With dead ends: 2145 [2024-11-24 01:24:06,231 INFO L226 Difference]: Without dead ends: 1271 [2024-11-24 01:24:06,239 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 01:24:06,240 INFO L435 NwaCegarLoop]: 257 mSDtfsCounter, 78 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:24:06,240 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 426 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:24:06,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2024-11-24 01:24:06,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 1065. [2024-11-24 01:24:06,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 784 states have (on average 1.4591836734693877) internal successors, (1144), 784 states have internal predecessors, (1144), 272 states have call successors, (272), 8 states have call predecessors, (272), 8 states have return successors, (272), 272 states have call predecessors, (272), 272 states have call successors, (272) [2024-11-24 01:24:06,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1688 transitions. [2024-11-24 01:24:06,472 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1688 transitions. Word has length 226 [2024-11-24 01:24:06,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:24:06,473 INFO L471 AbstractCegarLoop]: Abstraction has 1065 states and 1688 transitions. [2024-11-24 01:24:06,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-24 01:24:06,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1688 transitions. [2024-11-24 01:24:06,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2024-11-24 01:24:06,478 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:24:06,478 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:24:06,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 01:24:06,479 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:24:06,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:24:06,479 INFO L85 PathProgramCache]: Analyzing trace with hash 554223511, now seen corresponding path program 1 times [2024-11-24 01:24:06,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:24:06,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108892805] [2024-11-24 01:24:06,480 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:24:06,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:24:06,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:24:07,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-24 01:24:07,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:24:07,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108892805] [2024-11-24 01:24:07,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108892805] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:24:07,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:24:07,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:24:07,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855178749] [2024-11-24 01:24:07,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:24:07,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:24:07,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:24:07,339 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:24:07,339 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:24:07,343 INFO L87 Difference]: Start difference. First operand 1065 states and 1688 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-24 01:24:07,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:24:07,717 INFO L93 Difference]: Finished difference Result 2399 states and 3797 transitions. [2024-11-24 01:24:07,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:24:07,719 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 226 [2024-11-24 01:24:07,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:24:07,738 INFO L225 Difference]: With dead ends: 2399 [2024-11-24 01:24:07,738 INFO L226 Difference]: Without dead ends: 1337 [2024-11-24 01:24:07,743 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 01:24:07,744 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 117 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:24:07,744 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 312 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:24:07,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2024-11-24 01:24:07,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 1333. [2024-11-24 01:24:07,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1333 states, 982 states have (on average 1.4511201629327901) internal successors, (1425), 982 states have internal predecessors, (1425), 340 states have call successors, (340), 10 states have call predecessors, (340), 10 states have return successors, (340), 340 states have call predecessors, (340), 340 states have call successors, (340) [2024-11-24 01:24:08,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1333 states to 1333 states and 2105 transitions. [2024-11-24 01:24:08,015 INFO L78 Accepts]: Start accepts. Automaton has 1333 states and 2105 transitions. Word has length 226 [2024-11-24 01:24:08,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:24:08,017 INFO L471 AbstractCegarLoop]: Abstraction has 1333 states and 2105 transitions. [2024-11-24 01:24:08,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-24 01:24:08,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1333 states and 2105 transitions. [2024-11-24 01:24:08,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2024-11-24 01:24:08,030 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:24:08,031 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:24:08,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 01:24:08,031 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:24:08,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:24:08,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1369004523, now seen corresponding path program 1 times [2024-11-24 01:24:08,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:24:08,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863285480] [2024-11-24 01:24:08,033 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:24:08,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:24:08,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:24:08,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-24 01:24:08,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:24:08,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863285480] [2024-11-24 01:24:08,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863285480] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:24:08,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:24:08,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:24:08,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776578680] [2024-11-24 01:24:08,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:24:08,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:24:08,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:24:08,768 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:24:08,771 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:24:08,772 INFO L87 Difference]: Start difference. First operand 1333 states and 2105 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-24 01:24:09,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:24:09,469 INFO L93 Difference]: Finished difference Result 2665 states and 4208 transitions. [2024-11-24 01:24:09,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:24:09,470 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 226 [2024-11-24 01:24:09,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:24:09,483 INFO L225 Difference]: With dead ends: 2665 [2024-11-24 01:24:09,484 INFO L226 Difference]: Without dead ends: 1335 [2024-11-24 01:24:09,489 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 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 01:24:09,491 INFO L435 NwaCegarLoop]: 305 mSDtfsCounter, 152 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:24:09,492 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 537 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 01:24:09,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2024-11-24 01:24:09,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1333. [2024-11-24 01:24:09,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1333 states, 982 states have (on average 1.4460285132382893) internal successors, (1420), 982 states have internal predecessors, (1420), 340 states have call successors, (340), 10 states have call predecessors, (340), 10 states have return successors, (340), 340 states have call predecessors, (340), 340 states have call successors, (340) [2024-11-24 01:24:09,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1333 states to 1333 states and 2100 transitions. [2024-11-24 01:24:09,720 INFO L78 Accepts]: Start accepts. Automaton has 1333 states and 2100 transitions. Word has length 226 [2024-11-24 01:24:09,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:24:09,721 INFO L471 AbstractCegarLoop]: Abstraction has 1333 states and 2100 transitions. [2024-11-24 01:24:09,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-24 01:24:09,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1333 states and 2100 transitions. [2024-11-24 01:24:09,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-11-24 01:24:09,728 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:24:09,729 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:24:09,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 01:24:09,730 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:24:09,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:24:09,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1495400684, now seen corresponding path program 1 times [2024-11-24 01:24:09,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:24:09,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415236880] [2024-11-24 01:24:09,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:24:09,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:24:09,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:24:10,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-24 01:24:10,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:24:10,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415236880] [2024-11-24 01:24:10,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415236880] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:24:10,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:24:10,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 01:24:10,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732481195] [2024-11-24 01:24:10,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:24:10,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:24:10,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:24:10,573 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:24:10,574 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:24:10,574 INFO L87 Difference]: Start difference. First operand 1333 states and 2100 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-24 01:24:12,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:24:12,380 INFO L93 Difference]: Finished difference Result 3223 states and 5078 transitions. [2024-11-24 01:24:12,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:24:12,382 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 227 [2024-11-24 01:24:12,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:24:12,402 INFO L225 Difference]: With dead ends: 3223 [2024-11-24 01:24:12,402 INFO L226 Difference]: Without dead ends: 1893 [2024-11-24 01:24:12,408 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:24:12,409 INFO L435 NwaCegarLoop]: 163 mSDtfsCounter, 473 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:24:12,410 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 742 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-24 01:24:12,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1893 states. [2024-11-24 01:24:12,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1893 to 1881. [2024-11-24 01:24:12,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1881 states, 1390 states have (on average 1.4489208633093524) internal successors, (2014), 1390 states have internal predecessors, (2014), 476 states have call successors, (476), 14 states have call predecessors, (476), 14 states have return successors, (476), 476 states have call predecessors, (476), 476 states have call successors, (476) [2024-11-24 01:24:12,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1881 states to 1881 states and 2966 transitions. [2024-11-24 01:24:12,727 INFO L78 Accepts]: Start accepts. Automaton has 1881 states and 2966 transitions. Word has length 227 [2024-11-24 01:24:12,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:24:12,728 INFO L471 AbstractCegarLoop]: Abstraction has 1881 states and 2966 transitions. [2024-11-24 01:24:12,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-24 01:24:12,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1881 states and 2966 transitions. [2024-11-24 01:24:12,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-11-24 01:24:12,734 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:24:12,735 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:24:12,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 01:24:12,735 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:24:12,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:24:12,739 INFO L85 PathProgramCache]: Analyzing trace with hash 373897279, now seen corresponding path program 1 times [2024-11-24 01:24:12,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:24:12,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692157897] [2024-11-24 01:24:12,740 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:24:12,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:24:12,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:24:13,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-24 01:24:13,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:24:13,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692157897] [2024-11-24 01:24:13,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692157897] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:24:13,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:24:13,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 01:24:13,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897937960] [2024-11-24 01:24:13,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:24:13,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:24:13,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:24:13,536 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:24:13,536 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:24:13,536 INFO L87 Difference]: Start difference. First operand 1881 states and 2966 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-24 01:24:15,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:24:15,935 INFO L93 Difference]: Finished difference Result 6962 states and 10888 transitions. [2024-11-24 01:24:15,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 01:24:15,936 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 227 [2024-11-24 01:24:15,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:24:15,981 INFO L225 Difference]: With dead ends: 6962 [2024-11-24 01:24:15,981 INFO L226 Difference]: Without dead ends: 5084 [2024-11-24 01:24:15,990 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:24:15,992 INFO L435 NwaCegarLoop]: 213 mSDtfsCounter, 571 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:24:15,993 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 625 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-24 01:24:16,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5084 states. [2024-11-24 01:24:16,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5084 to 4230. [2024-11-24 01:24:16,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4230 states, 3032 states have (on average 1.4010554089709764) internal successors, (4248), 3053 states have internal predecessors, (4248), 1155 states have call successors, (1155), 42 states have call predecessors, (1155), 42 states have return successors, (1155), 1134 states have call predecessors, (1155), 1155 states have call successors, (1155) [2024-11-24 01:24:16,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4230 states to 4230 states and 6558 transitions. [2024-11-24 01:24:16,870 INFO L78 Accepts]: Start accepts. Automaton has 4230 states and 6558 transitions. Word has length 227 [2024-11-24 01:24:16,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:24:16,873 INFO L471 AbstractCegarLoop]: Abstraction has 4230 states and 6558 transitions. [2024-11-24 01:24:16,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-24 01:24:16,873 INFO L276 IsEmpty]: Start isEmpty. Operand 4230 states and 6558 transitions. [2024-11-24 01:24:16,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-11-24 01:24:16,880 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:24:16,881 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:24:16,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 01:24:16,881 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:24:16,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:24:16,882 INFO L85 PathProgramCache]: Analyzing trace with hash -435449347, now seen corresponding path program 1 times [2024-11-24 01:24:16,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:24:16,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116829472] [2024-11-24 01:24:16,883 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:24:16,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:24:17,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:24:17,450 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 63 proven. 36 refuted. 0 times theorem prover too weak. 2145 trivial. 0 not checked. [2024-11-24 01:24:17,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:24:17,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116829472] [2024-11-24 01:24:17,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116829472] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:24:17,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098739349] [2024-11-24 01:24:17,451 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:24:17,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:24:17,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38c93910-b627-49fc-84b0-ae35025418bd/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:24:17,454 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38c93910-b627-49fc-84b0-ae35025418bd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:24:17,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38c93910-b627-49fc-84b0-ae35025418bd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 01:24:17,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:24:17,720 INFO L256 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-24 01:24:17,733 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:24:18,198 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1083 proven. 36 refuted. 0 times theorem prover too weak. 1125 trivial. 0 not checked. [2024-11-24 01:24:18,200 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:24:18,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 63 proven. 36 refuted. 0 times theorem prover too weak. 2145 trivial. 0 not checked. [2024-11-24 01:24:18,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098739349] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:24:18,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:24:18,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2024-11-24 01:24:18,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725298910] [2024-11-24 01:24:18,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:24:18,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 01:24:18,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:24:18,768 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 01:24:18,768 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:24:18,768 INFO L87 Difference]: Start difference. First operand 4230 states and 6558 transitions. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 3 states have call successors, (58), 2 states have call predecessors, (58), 4 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) [2024-11-24 01:24:20,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:24:20,301 INFO L93 Difference]: Finished difference Result 7249 states and 11223 transitions. [2024-11-24 01:24:20,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-24 01:24:20,305 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 3 states have call successors, (58), 2 states have call predecessors, (58), 4 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) Word has length 227 [2024-11-24 01:24:20,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:24:20,396 INFO L225 Difference]: With dead ends: 7249 [2024-11-24 01:24:20,396 INFO L226 Difference]: Without dead ends: 2928 [2024-11-24 01:24:20,429 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 452 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2024-11-24 01:24:20,430 INFO L435 NwaCegarLoop]: 228 mSDtfsCounter, 399 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-24 01:24:20,434 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 676 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-24 01:24:20,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2024-11-24 01:24:20,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 2870. [2024-11-24 01:24:20,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2870 states, 2106 states have (on average 1.416429249762583) internal successors, (2983), 2106 states have internal predecessors, (2983), 714 states have call successors, (714), 49 states have call predecessors, (714), 49 states have return successors, (714), 714 states have call predecessors, (714), 714 states have call successors, (714) [2024-11-24 01:24:20,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2870 states to 2870 states and 4411 transitions. [2024-11-24 01:24:20,837 INFO L78 Accepts]: Start accepts. Automaton has 2870 states and 4411 transitions. Word has length 227 [2024-11-24 01:24:20,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:24:20,838 INFO L471 AbstractCegarLoop]: Abstraction has 2870 states and 4411 transitions. [2024-11-24 01:24:20,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 3 states have call successors, (58), 2 states have call predecessors, (58), 4 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) [2024-11-24 01:24:20,839 INFO L276 IsEmpty]: Start isEmpty. Operand 2870 states and 4411 transitions. [2024-11-24 01:24:20,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-24 01:24:20,844 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:24:20,844 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:24:20,859 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38c93910-b627-49fc-84b0-ae35025418bd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-24 01:24:21,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38c93910-b627-49fc-84b0-ae35025418bd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-24 01:24:21,047 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:24:21,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:24:21,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1394231081, now seen corresponding path program 1 times [2024-11-24 01:24:21,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:24:21,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376548484] [2024-11-24 01:24:21,048 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:24:21,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:24:21,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:24:21,675 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-24 01:24:21,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:24:21,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376548484] [2024-11-24 01:24:21,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376548484] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:24:21,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:24:21,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 01:24:21,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526878704] [2024-11-24 01:24:21,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:24:21,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:24:21,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:24:21,679 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:24:21,679 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:24:21,679 INFO L87 Difference]: Start difference. First operand 2870 states and 4411 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-24 01:24:22,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:24:22,590 INFO L93 Difference]: Finished difference Result 4780 states and 7353 transitions. [2024-11-24 01:24:22,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:24:22,591 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 228 [2024-11-24 01:24:22,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:24:22,629 INFO L225 Difference]: With dead ends: 4780 [2024-11-24 01:24:22,629 INFO L226 Difference]: Without dead ends: 2878 [2024-11-24 01:24:22,639 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:24:22,640 INFO L435 NwaCegarLoop]: 176 mSDtfsCounter, 126 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:24:22,641 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 714 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 01:24:22,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2878 states. [2024-11-24 01:24:22,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2878 to 2870. [2024-11-24 01:24:22,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2870 states, 2106 states have (on average 1.415954415954416) internal successors, (2982), 2106 states have internal predecessors, (2982), 714 states have call successors, (714), 49 states have call predecessors, (714), 49 states have return successors, (714), 714 states have call predecessors, (714), 714 states have call successors, (714) [2024-11-24 01:24:23,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2870 states to 2870 states and 4410 transitions. [2024-11-24 01:24:23,031 INFO L78 Accepts]: Start accepts. Automaton has 2870 states and 4410 transitions. Word has length 228 [2024-11-24 01:24:23,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:24:23,032 INFO L471 AbstractCegarLoop]: Abstraction has 2870 states and 4410 transitions. [2024-11-24 01:24:23,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-24 01:24:23,033 INFO L276 IsEmpty]: Start isEmpty. Operand 2870 states and 4410 transitions. [2024-11-24 01:24:23,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-24 01:24:23,038 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:24:23,039 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:24:23,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-24 01:24:23,040 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:24:23,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:24:23,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1832211059, now seen corresponding path program 1 times [2024-11-24 01:24:23,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:24:23,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040312005] [2024-11-24 01:24:23,042 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:24:23,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:24:23,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:24:23,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-24 01:24:23,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:24:23,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040312005] [2024-11-24 01:24:23,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040312005] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:24:23,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:24:23,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:24:23,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103837832] [2024-11-24 01:24:23,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:24:23,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:24:23,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:24:23,675 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:24:23,675 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:24:23,676 INFO L87 Difference]: Start difference. First operand 2870 states and 4410 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-24 01:24:24,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:24:24,760 INFO L93 Difference]: Finished difference Result 7441 states and 11441 transitions. [2024-11-24 01:24:24,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:24:24,761 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 228 [2024-11-24 01:24:24,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:24:24,805 INFO L225 Difference]: With dead ends: 7441 [2024-11-24 01:24:24,805 INFO L226 Difference]: Without dead ends: 4448 [2024-11-24 01:24:24,820 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:24:24,822 INFO L435 NwaCegarLoop]: 201 mSDtfsCounter, 305 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:24:24,822 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 681 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 01:24:24,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4448 states. [2024-11-24 01:24:25,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4448 to 4024. [2024-11-24 01:24:25,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4024 states, 3044 states have (on average 1.4224704336399474) internal successors, (4330), 3044 states have internal predecessors, (4330), 918 states have call successors, (918), 61 states have call predecessors, (918), 61 states have return successors, (918), 918 states have call predecessors, (918), 918 states have call successors, (918) [2024-11-24 01:24:25,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4024 states to 4024 states and 6166 transitions. [2024-11-24 01:24:25,401 INFO L78 Accepts]: Start accepts. Automaton has 4024 states and 6166 transitions. Word has length 228 [2024-11-24 01:24:25,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:24:25,402 INFO L471 AbstractCegarLoop]: Abstraction has 4024 states and 6166 transitions. [2024-11-24 01:24:25,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-24 01:24:25,402 INFO L276 IsEmpty]: Start isEmpty. Operand 4024 states and 6166 transitions. [2024-11-24 01:24:25,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-24 01:24:25,407 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:24:25,407 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:24:25,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-24 01:24:25,408 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:24:25,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:24:25,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1686421068, now seen corresponding path program 1 times [2024-11-24 01:24:25,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:24:25,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719220856] [2024-11-24 01:24:25,409 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:24:25,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:24:25,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:24:26,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-24 01:24:26,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:24:26,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719220856] [2024-11-24 01:24:26,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719220856] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:24:26,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:24:26,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:24:26,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782164002] [2024-11-24 01:24:26,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:24:26,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:24:26,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:24:26,210 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:24:26,210 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:24:26,211 INFO L87 Difference]: Start difference. First operand 4024 states and 6166 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-24 01:24:27,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:24:27,351 INFO L93 Difference]: Finished difference Result 8072 states and 12369 transitions. [2024-11-24 01:24:27,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:24:27,352 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 228 [2024-11-24 01:24:27,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:24:27,394 INFO L225 Difference]: With dead ends: 8072 [2024-11-24 01:24:27,397 INFO L226 Difference]: Without dead ends: 4051 [2024-11-24 01:24:27,473 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:24:27,475 INFO L435 NwaCegarLoop]: 157 mSDtfsCounter, 114 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-24 01:24:27,475 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 461 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-24 01:24:27,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4051 states. [2024-11-24 01:24:27,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4051 to 4040. [2024-11-24 01:24:27,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4040 states, 3060 states have (on average 1.4222222222222223) internal successors, (4352), 3060 states have internal predecessors, (4352), 918 states have call successors, (918), 61 states have call predecessors, (918), 61 states have return successors, (918), 918 states have call predecessors, (918), 918 states have call successors, (918) [2024-11-24 01:24:27,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4040 states to 4040 states and 6188 transitions. [2024-11-24 01:24:27,912 INFO L78 Accepts]: Start accepts. Automaton has 4040 states and 6188 transitions. Word has length 228 [2024-11-24 01:24:27,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:24:27,913 INFO L471 AbstractCegarLoop]: Abstraction has 4040 states and 6188 transitions. [2024-11-24 01:24:27,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-24 01:24:27,915 INFO L276 IsEmpty]: Start isEmpty. Operand 4040 states and 6188 transitions. [2024-11-24 01:24:27,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-24 01:24:27,919 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:24:27,920 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:24:27,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 01:24:27,920 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:24:27,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:24:27,921 INFO L85 PathProgramCache]: Analyzing trace with hash 868772618, now seen corresponding path program 1 times [2024-11-24 01:24:27,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:24:27,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497184272] [2024-11-24 01:24:27,922 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:24:27,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:24:28,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:24:28,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 63 proven. 36 refuted. 0 times theorem prover too weak. 2145 trivial. 0 not checked. [2024-11-24 01:24:28,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:24:28,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497184272] [2024-11-24 01:24:28,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497184272] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:24:28,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325525495] [2024-11-24 01:24:28,577 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:24:28,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:24:28,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38c93910-b627-49fc-84b0-ae35025418bd/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:24:28,581 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38c93910-b627-49fc-84b0-ae35025418bd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:24:28,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38c93910-b627-49fc-84b0-ae35025418bd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 01:24:28,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:24:28,863 INFO L256 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-24 01:24:28,876 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:24:31,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1225 proven. 177 refuted. 0 times theorem prover too weak. 842 trivial. 0 not checked. [2024-11-24 01:24:31,534 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:24:32,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 42 proven. 57 refuted. 0 times theorem prover too weak. 2145 trivial. 0 not checked. [2024-11-24 01:24:32,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325525495] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:24:32,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:24:32,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 14, 7] total 23 [2024-11-24 01:24:32,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011921126] [2024-11-24 01:24:32,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:24:32,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-24 01:24:32,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:24:32,542 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-24 01:24:32,545 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2024-11-24 01:24:32,545 INFO L87 Difference]: Start difference. First operand 4040 states and 6188 transitions. Second operand has 23 states, 23 states have (on average 6.565217391304348) internal successors, (151), 22 states have internal predecessors, (151), 8 states have call successors, (100), 5 states have call predecessors, (100), 9 states have return successors, (100), 8 states have call predecessors, (100), 8 states have call successors, (100) [2024-11-24 01:24:45,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:24:45,776 INFO L93 Difference]: Finished difference Result 16385 states and 23910 transitions. [2024-11-24 01:24:45,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2024-11-24 01:24:45,777 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.565217391304348) internal successors, (151), 22 states have internal predecessors, (151), 8 states have call successors, (100), 5 states have call predecessors, (100), 9 states have return successors, (100), 8 states have call predecessors, (100), 8 states have call successors, (100) Word has length 228 [2024-11-24 01:24:45,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:24:45,846 INFO L225 Difference]: With dead ends: 16385 [2024-11-24 01:24:45,846 INFO L226 Difference]: Without dead ends: 12348 [2024-11-24 01:24:45,868 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 597 GetRequests, 454 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8607 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=4013, Invalid=16867, Unknown=0, NotChecked=0, Total=20880 [2024-11-24 01:24:45,869 INFO L435 NwaCegarLoop]: 239 mSDtfsCounter, 3168 mSDsluCounter, 1242 mSDsCounter, 0 mSdLazyCounter, 2385 mSolverCounterSat, 1025 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3168 SdHoareTripleChecker+Valid, 1481 SdHoareTripleChecker+Invalid, 3410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1025 IncrementalHoareTripleChecker+Valid, 2385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-24 01:24:45,870 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3168 Valid, 1481 Invalid, 3410 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1025 Valid, 2385 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-11-24 01:24:45,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12348 states. [2024-11-24 01:24:47,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12348 to 8341. [2024-11-24 01:24:47,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8341 states, 6748 states have (on average 1.3783343212803794) internal successors, (9301), 6800 states have internal predecessors, (9301), 1362 states have call successors, (1362), 230 states have call predecessors, (1362), 230 states have return successors, (1362), 1310 states have call predecessors, (1362), 1362 states have call successors, (1362) [2024-11-24 01:24:47,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8341 states to 8341 states and 12025 transitions. [2024-11-24 01:24:47,287 INFO L78 Accepts]: Start accepts. Automaton has 8341 states and 12025 transitions. Word has length 228 [2024-11-24 01:24:47,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:24:47,288 INFO L471 AbstractCegarLoop]: Abstraction has 8341 states and 12025 transitions. [2024-11-24 01:24:47,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.565217391304348) internal successors, (151), 22 states have internal predecessors, (151), 8 states have call successors, (100), 5 states have call predecessors, (100), 9 states have return successors, (100), 8 states have call predecessors, (100), 8 states have call successors, (100) [2024-11-24 01:24:47,289 INFO L276 IsEmpty]: Start isEmpty. Operand 8341 states and 12025 transitions. [2024-11-24 01:24:47,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2024-11-24 01:24:47,293 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:24:47,294 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:24:47,308 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38c93910-b627-49fc-84b0-ae35025418bd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-24 01:24:47,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38c93910-b627-49fc-84b0-ae35025418bd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-24 01:24:47,498 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:24:47,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:24:47,501 INFO L85 PathProgramCache]: Analyzing trace with hash 220787055, now seen corresponding path program 1 times [2024-11-24 01:24:47,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:24:47,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503973836] [2024-11-24 01:24:47,501 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:24:47,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:24:47,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:24:49,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 57 proven. 135 refuted. 0 times theorem prover too weak. 2052 trivial. 0 not checked. [2024-11-24 01:24:49,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:24:49,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503973836] [2024-11-24 01:24:49,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503973836] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:24:49,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721193377] [2024-11-24 01:24:49,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:24:49,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:24:49,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38c93910-b627-49fc-84b0-ae35025418bd/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:24:49,897 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38c93910-b627-49fc-84b0-ae35025418bd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:24:49,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38c93910-b627-49fc-84b0-ae35025418bd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 01:24:50,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:24:50,188 INFO L256 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-24 01:24:50,197 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:24:52,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1141 proven. 336 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2024-11-24 01:24:52,397 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:24:54,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 111 proven. 267 refuted. 0 times theorem prover too weak. 1866 trivial. 0 not checked. [2024-11-24 01:24:54,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721193377] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:24:54,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:24:54,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15, 15] total 33 [2024-11-24 01:24:54,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944403553] [2024-11-24 01:24:54,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:24:54,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-24 01:24:54,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:24:54,604 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-24 01:24:54,605 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=795, Unknown=0, NotChecked=0, Total=1056 [2024-11-24 01:24:54,605 INFO L87 Difference]: Start difference. First operand 8341 states and 12025 transitions. Second operand has 33 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 13 states have call successors, (89), 5 states have call predecessors, (89), 12 states have return successors, (91), 12 states have call predecessors, (91), 13 states have call successors, (91) [2024-11-24 01:24:57,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:24:57,563 INFO L93 Difference]: Finished difference Result 12569 states and 17961 transitions. [2024-11-24 01:24:57,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-24 01:24:57,564 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 13 states have call successors, (89), 5 states have call predecessors, (89), 12 states have return successors, (91), 12 states have call predecessors, (91), 13 states have call successors, (91) Word has length 230 [2024-11-24 01:24:57,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:24:57,601 INFO L225 Difference]: With dead ends: 12569 [2024-11-24 01:24:57,601 INFO L226 Difference]: Without dead ends: 5884 [2024-11-24 01:24:57,618 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 443 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 770 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1038, Invalid=2384, Unknown=0, NotChecked=0, Total=3422 [2024-11-24 01:24:57,619 INFO L435 NwaCegarLoop]: 129 mSDtfsCounter, 1545 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 413 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1545 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 1035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 413 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:24:57,620 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1545 Valid, 507 Invalid, 1035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [413 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-24 01:24:57,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2024-11-24 01:24:58,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5488. [2024-11-24 01:24:58,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5488 states, 4392 states have (on average 1.3743169398907105) internal successors, (6036), 4417 states have internal predecessors, (6036), 897 states have call successors, (897), 198 states have call predecessors, (897), 198 states have return successors, (897), 872 states have call predecessors, (897), 897 states have call successors, (897) [2024-11-24 01:24:58,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5488 states to 5488 states and 7830 transitions. [2024-11-24 01:24:58,693 INFO L78 Accepts]: Start accepts. Automaton has 5488 states and 7830 transitions. Word has length 230 [2024-11-24 01:24:58,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:24:58,694 INFO L471 AbstractCegarLoop]: Abstraction has 5488 states and 7830 transitions. [2024-11-24 01:24:58,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 13 states have call successors, (89), 5 states have call predecessors, (89), 12 states have return successors, (91), 12 states have call predecessors, (91), 13 states have call successors, (91) [2024-11-24 01:24:58,694 INFO L276 IsEmpty]: Start isEmpty. Operand 5488 states and 7830 transitions. [2024-11-24 01:24:58,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-24 01:24:58,698 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:24:58,699 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:24:58,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38c93910-b627-49fc-84b0-ae35025418bd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-24 01:24:58,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38c93910-b627-49fc-84b0-ae35025418bd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-24 01:24:58,899 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:24:58,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:24:58,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1941192137, now seen corresponding path program 1 times [2024-11-24 01:24:58,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:24:58,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20340077] [2024-11-24 01:24:58,902 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:24:58,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:24:58,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:24:59,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-24 01:24:59,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:24:59,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20340077] [2024-11-24 01:24:59,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20340077] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:24:59,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:24:59,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:24:59,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419672370] [2024-11-24 01:24:59,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:24:59,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:24:59,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:24:59,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:24:59,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:24:59,194 INFO L87 Difference]: Start difference. First operand 5488 states and 7830 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-24 01:25:00,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:25:00,706 INFO L93 Difference]: Finished difference Result 10648 states and 15110 transitions. [2024-11-24 01:25:00,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:25:00,707 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 231 [2024-11-24 01:25:00,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:25:00,749 INFO L225 Difference]: With dead ends: 10648 [2024-11-24 01:25:00,749 INFO L226 Difference]: Without dead ends: 6607 [2024-11-24 01:25:00,764 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:25:00,765 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 356 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:25:00,766 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 469 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 01:25:00,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6607 states. [2024-11-24 01:25:01,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6607 to 5094. [2024-11-24 01:25:01,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5094 states, 4098 states have (on average 1.3831137140068326) internal successors, (5668), 4115 states have internal predecessors, (5668), 808 states have call successors, (808), 187 states have call predecessors, (808), 187 states have return successors, (808), 791 states have call predecessors, (808), 808 states have call successors, (808) [2024-11-24 01:25:01,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5094 states to 5094 states and 7284 transitions. [2024-11-24 01:25:01,925 INFO L78 Accepts]: Start accepts. Automaton has 5094 states and 7284 transitions. Word has length 231 [2024-11-24 01:25:01,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:25:01,927 INFO L471 AbstractCegarLoop]: Abstraction has 5094 states and 7284 transitions. [2024-11-24 01:25:01,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-24 01:25:01,928 INFO L276 IsEmpty]: Start isEmpty. Operand 5094 states and 7284 transitions. [2024-11-24 01:25:01,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-24 01:25:01,933 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:25:01,933 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:01,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-24 01:25:01,934 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:25:01,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:25:01,934 INFO L85 PathProgramCache]: Analyzing trace with hash 2147374295, now seen corresponding path program 1 times [2024-11-24 01:25:01,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:25:01,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661332493] [2024-11-24 01:25:01,935 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:25:01,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:25:01,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:25:02,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-24 01:25:02,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:25:02,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661332493] [2024-11-24 01:25:02,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661332493] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:25:02,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:25:02,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 01:25:02,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999261444] [2024-11-24 01:25:02,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:25:02,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:25:02,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:25:02,538 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:25:02,538 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:25:02,538 INFO L87 Difference]: Start difference. First operand 5094 states and 7284 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-24 01:25:05,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:25:05,007 INFO L93 Difference]: Finished difference Result 15053 states and 21545 transitions. [2024-11-24 01:25:05,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:25:05,008 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 231 [2024-11-24 01:25:05,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:25:05,055 INFO L225 Difference]: With dead ends: 15053 [2024-11-24 01:25:05,055 INFO L226 Difference]: Without dead ends: 9962 [2024-11-24 01:25:05,067 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-24 01:25:05,067 INFO L435 NwaCegarLoop]: 182 mSDtfsCounter, 403 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:25:05,068 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 588 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-24 01:25:05,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9962 states. [2024-11-24 01:25:06,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9962 to 9938. [2024-11-24 01:25:06,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9938 states, 7926 states have (on average 1.3816553116326016) internal successors, (10951), 7963 states have internal predecessors, (10951), 1634 states have call successors, (1634), 377 states have call predecessors, (1634), 377 states have return successors, (1634), 1597 states have call predecessors, (1634), 1634 states have call successors, (1634) [2024-11-24 01:25:06,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9938 states to 9938 states and 14219 transitions. [2024-11-24 01:25:06,843 INFO L78 Accepts]: Start accepts. Automaton has 9938 states and 14219 transitions. Word has length 231 [2024-11-24 01:25:06,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:25:06,843 INFO L471 AbstractCegarLoop]: Abstraction has 9938 states and 14219 transitions. [2024-11-24 01:25:06,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-24 01:25:06,844 INFO L276 IsEmpty]: Start isEmpty. Operand 9938 states and 14219 transitions. [2024-11-24 01:25:06,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-24 01:25:06,847 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:25:06,847 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:06,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-24 01:25:06,848 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:25:06,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:25:06,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1395802580, now seen corresponding path program 1 times [2024-11-24 01:25:06,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:25:06,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305041496] [2024-11-24 01:25:06,849 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:25:06,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:25:06,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:25:07,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-24 01:25:07,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:25:07,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305041496] [2024-11-24 01:25:07,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305041496] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:25:07,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:25:07,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 01:25:07,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851025021] [2024-11-24 01:25:07,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:25:07,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 01:25:07,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:25:07,754 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 01:25:07,754 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:25:07,754 INFO L87 Difference]: Start difference. First operand 9938 states and 14219 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-24 01:25:10,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:25:10,673 INFO L93 Difference]: Finished difference Result 19015 states and 27166 transitions. [2024-11-24 01:25:10,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:25:10,674 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 231 [2024-11-24 01:25:10,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:25:10,728 INFO L225 Difference]: With dead ends: 19015 [2024-11-24 01:25:10,728 INFO L226 Difference]: Without dead ends: 10568 [2024-11-24 01:25:10,748 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:25:10,749 INFO L435 NwaCegarLoop]: 198 mSDtfsCounter, 309 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:25:10,749 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 861 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-24 01:25:10,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10568 states. [2024-11-24 01:25:12,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10568 to 10528. [2024-11-24 01:25:12,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10528 states, 8489 states have (on average 1.3799034044057015) internal successors, (11714), 8534 states have internal predecessors, (11714), 1650 states have call successors, (1650), 388 states have call predecessors, (1650), 388 states have return successors, (1650), 1605 states have call predecessors, (1650), 1650 states have call successors, (1650) [2024-11-24 01:25:12,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10528 states to 10528 states and 15014 transitions. [2024-11-24 01:25:12,310 INFO L78 Accepts]: Start accepts. Automaton has 10528 states and 15014 transitions. Word has length 231 [2024-11-24 01:25:12,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:25:12,311 INFO L471 AbstractCegarLoop]: Abstraction has 10528 states and 15014 transitions. [2024-11-24 01:25:12,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-24 01:25:12,312 INFO L276 IsEmpty]: Start isEmpty. Operand 10528 states and 15014 transitions. [2024-11-24 01:25:12,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2024-11-24 01:25:12,315 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:25:12,315 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:12,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-24 01:25:12,315 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:25:12,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:25:12,316 INFO L85 PathProgramCache]: Analyzing trace with hash -856926150, now seen corresponding path program 1 times [2024-11-24 01:25:12,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:25:12,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76830814] [2024-11-24 01:25:12,317 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:25:12,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:25:12,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:25:12,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-24 01:25:12,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:25:12,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76830814] [2024-11-24 01:25:12,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76830814] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:25:12,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:25:12,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:25:12,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760266995] [2024-11-24 01:25:12,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:25:12,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:25:12,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:25:12,489 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:25:12,489 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:25:12,489 INFO L87 Difference]: Start difference. First operand 10528 states and 15014 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-24 01:25:16,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:25:16,009 INFO L93 Difference]: Finished difference Result 28568 states and 40701 transitions. [2024-11-24 01:25:16,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:25:16,010 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 232 [2024-11-24 01:25:16,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:25:16,092 INFO L225 Difference]: With dead ends: 28568 [2024-11-24 01:25:16,092 INFO L226 Difference]: Without dead ends: 19304 [2024-11-24 01:25:16,115 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 01:25:16,115 INFO L435 NwaCegarLoop]: 450 mSDtfsCounter, 297 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-24 01:25:16,116 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 806 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-24 01:25:16,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19304 states. [2024-11-24 01:25:19,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19304 to 19064. [2024-11-24 01:25:19,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19064 states, 15154 states have (on average 1.3547578197175663) internal successors, (20530), 15230 states have internal predecessors, (20530), 3168 states have call successors, (3168), 741 states have call predecessors, (3168), 741 states have return successors, (3168), 3092 states have call predecessors, (3168), 3168 states have call successors, (3168) [2024-11-24 01:25:19,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19064 states to 19064 states and 26866 transitions. [2024-11-24 01:25:19,886 INFO L78 Accepts]: Start accepts. Automaton has 19064 states and 26866 transitions. Word has length 232 [2024-11-24 01:25:19,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:25:19,887 INFO L471 AbstractCegarLoop]: Abstraction has 19064 states and 26866 transitions. [2024-11-24 01:25:19,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-24 01:25:19,887 INFO L276 IsEmpty]: Start isEmpty. Operand 19064 states and 26866 transitions. [2024-11-24 01:25:19,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2024-11-24 01:25:19,891 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:25:19,891 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:19,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-24 01:25:19,892 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:25:19,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:25:19,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1558526024, now seen corresponding path program 1 times [2024-11-24 01:25:19,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:25:19,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452900011] [2024-11-24 01:25:19,893 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:25:19,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:25:19,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:25:20,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-24 01:25:20,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:25:20,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452900011] [2024-11-24 01:25:20,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452900011] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:25:20,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:25:20,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 01:25:20,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958454611] [2024-11-24 01:25:20,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:25:20,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:25:20,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:25:20,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:25:20,613 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:25:20,617 INFO L87 Difference]: Start difference. First operand 19064 states and 26866 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-24 01:25:25,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:25:25,285 INFO L93 Difference]: Finished difference Result 35704 states and 50456 transitions. [2024-11-24 01:25:25,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 01:25:25,286 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 232 [2024-11-24 01:25:25,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:25:25,384 INFO L225 Difference]: With dead ends: 35704 [2024-11-24 01:25:25,384 INFO L226 Difference]: Without dead ends: 21647 [2024-11-24 01:25:25,413 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:25:25,414 INFO L435 NwaCegarLoop]: 183 mSDtfsCounter, 435 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:25:25,414 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 815 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-24 01:25:25,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21647 states. [2024-11-24 01:25:29,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21647 to 21587. [2024-11-24 01:25:29,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21587 states, 17012 states have (on average 1.3492240771220314) internal successors, (22953), 17093 states have internal predecessors, (22953), 3708 states have call successors, (3708), 866 states have call predecessors, (3708), 866 states have return successors, (3708), 3627 states have call predecessors, (3708), 3708 states have call successors, (3708) [2024-11-24 01:25:29,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21587 states to 21587 states and 30369 transitions. [2024-11-24 01:25:29,686 INFO L78 Accepts]: Start accepts. Automaton has 21587 states and 30369 transitions. Word has length 232 [2024-11-24 01:25:29,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:25:29,693 INFO L471 AbstractCegarLoop]: Abstraction has 21587 states and 30369 transitions. [2024-11-24 01:25:29,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-24 01:25:29,694 INFO L276 IsEmpty]: Start isEmpty. Operand 21587 states and 30369 transitions. [2024-11-24 01:25:29,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2024-11-24 01:25:29,701 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:25:29,702 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:29,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-24 01:25:29,702 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:25:29,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:25:29,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1256481585, now seen corresponding path program 1 times [2024-11-24 01:25:29,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:25:29,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115499623] [2024-11-24 01:25:29,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:25:29,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:25:29,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:25:30,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-24 01:25:30,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:25:30,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115499623] [2024-11-24 01:25:30,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115499623] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:25:30,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:25:30,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-24 01:25:30,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495398046] [2024-11-24 01:25:30,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:25:30,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 01:25:30,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:25:30,542 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 01:25:30,542 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:25:30,542 INFO L87 Difference]: Start difference. First operand 21587 states and 30369 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-24 01:25:36,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:25:36,796 INFO L93 Difference]: Finished difference Result 36461 states and 51447 transitions. [2024-11-24 01:25:36,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-24 01:25:36,797 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 232 [2024-11-24 01:25:36,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:25:36,880 INFO L225 Difference]: With dead ends: 36461 [2024-11-24 01:25:36,881 INFO L226 Difference]: Without dead ends: 22813 [2024-11-24 01:25:36,909 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=121, Invalid=259, Unknown=0, NotChecked=0, Total=380 [2024-11-24 01:25:36,910 INFO L435 NwaCegarLoop]: 407 mSDtfsCounter, 555 mSDsluCounter, 1310 mSDsCounter, 0 mSdLazyCounter, 1499 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 1717 SdHoareTripleChecker+Invalid, 1783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 1499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:25:36,910 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 1717 Invalid, 1783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 1499 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-24 01:25:36,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22813 states. [2024-11-24 01:25:41,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22813 to 22369. [2024-11-24 01:25:41,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22369 states, 17670 states have (on average 1.3481607243916243) internal successors, (23822), 17759 states have internal predecessors, (23822), 3808 states have call successors, (3808), 890 states have call predecessors, (3808), 890 states have return successors, (3808), 3719 states have call predecessors, (3808), 3808 states have call successors, (3808) [2024-11-24 01:25:41,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22369 states to 22369 states and 31438 transitions. [2024-11-24 01:25:41,266 INFO L78 Accepts]: Start accepts. Automaton has 22369 states and 31438 transitions. Word has length 232 [2024-11-24 01:25:41,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:25:41,266 INFO L471 AbstractCegarLoop]: Abstraction has 22369 states and 31438 transitions. [2024-11-24 01:25:41,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-24 01:25:41,266 INFO L276 IsEmpty]: Start isEmpty. Operand 22369 states and 31438 transitions. [2024-11-24 01:25:41,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2024-11-24 01:25:41,269 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:25:41,269 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:41,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-24 01:25:41,270 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:25:41,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:25:41,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1361815899, now seen corresponding path program 1 times [2024-11-24 01:25:41,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:25:41,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384514844] [2024-11-24 01:25:41,271 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:25:41,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:25:41,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:25:41,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-24 01:25:41,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:25:41,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384514844] [2024-11-24 01:25:41,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384514844] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:25:41,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:25:41,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 01:25:41,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792253512] [2024-11-24 01:25:41,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:25:41,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:25:41,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:25:41,830 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:25:41,830 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:25:41,831 INFO L87 Difference]: Start difference. First operand 22369 states and 31438 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-24 01:25:47,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:25:47,529 INFO L93 Difference]: Finished difference Result 44777 states and 62911 transitions. [2024-11-24 01:25:47,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 01:25:47,530 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 232 [2024-11-24 01:25:47,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:25:47,619 INFO L225 Difference]: With dead ends: 44777 [2024-11-24 01:25:47,620 INFO L226 Difference]: Without dead ends: 22411 [2024-11-24 01:25:47,669 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2024-11-24 01:25:47,681 INFO L435 NwaCegarLoop]: 178 mSDtfsCounter, 737 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 313 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:25:47,681 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 595 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [313 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-24 01:25:47,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22411 states. [2024-11-24 01:25:51,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22411 to 22369. [2024-11-24 01:25:51,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22369 states, 17670 states have (on average 1.3421052631578947) internal successors, (23715), 17759 states have internal predecessors, (23715), 3808 states have call successors, (3808), 890 states have call predecessors, (3808), 890 states have return successors, (3808), 3719 states have call predecessors, (3808), 3808 states have call successors, (3808) [2024-11-24 01:25:51,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22369 states to 22369 states and 31331 transitions. [2024-11-24 01:25:51,379 INFO L78 Accepts]: Start accepts. Automaton has 22369 states and 31331 transitions. Word has length 232 [2024-11-24 01:25:51,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:25:51,379 INFO L471 AbstractCegarLoop]: Abstraction has 22369 states and 31331 transitions. [2024-11-24 01:25:51,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-24 01:25:51,380 INFO L276 IsEmpty]: Start isEmpty. Operand 22369 states and 31331 transitions. [2024-11-24 01:25:51,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2024-11-24 01:25:51,382 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:25:51,383 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:51,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-24 01:25:51,383 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:25:51,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:25:51,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1857874119, now seen corresponding path program 1 times [2024-11-24 01:25:51,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:25:51,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929739736] [2024-11-24 01:25:51,385 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:25:51,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:25:51,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:25:51,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-24 01:25:51,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:25:51,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929739736] [2024-11-24 01:25:51,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929739736] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:25:51,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:25:51,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:25:51,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732466929] [2024-11-24 01:25:51,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:25:51,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:25:51,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:25:51,684 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:25:51,684 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:25:51,684 INFO L87 Difference]: Start difference. First operand 22369 states and 31331 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-24 01:25:55,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:25:55,816 INFO L93 Difference]: Finished difference Result 40846 states and 57308 transitions. [2024-11-24 01:25:55,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:25:55,816 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 232 [2024-11-24 01:25:55,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:25:55,894 INFO L225 Difference]: With dead ends: 40846 [2024-11-24 01:25:55,894 INFO L226 Difference]: Without dead ends: 22369 [2024-11-24 01:25:55,929 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 01:25:55,930 INFO L435 NwaCegarLoop]: 183 mSDtfsCounter, 0 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:25:55,930 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 333 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:25:55,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22369 states. [2024-11-24 01:26:00,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22369 to 22369. [2024-11-24 01:26:00,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22369 states, 17670 states have (on average 1.336672325976231) internal successors, (23619), 17759 states have internal predecessors, (23619), 3808 states have call successors, (3808), 890 states have call predecessors, (3808), 890 states have return successors, (3808), 3719 states have call predecessors, (3808), 3808 states have call successors, (3808) [2024-11-24 01:26:00,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22369 states to 22369 states and 31235 transitions. [2024-11-24 01:26:00,441 INFO L78 Accepts]: Start accepts. Automaton has 22369 states and 31235 transitions. Word has length 232 [2024-11-24 01:26:00,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:26:00,441 INFO L471 AbstractCegarLoop]: Abstraction has 22369 states and 31235 transitions. [2024-11-24 01:26:00,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-24 01:26:00,442 INFO L276 IsEmpty]: Start isEmpty. Operand 22369 states and 31235 transitions. [2024-11-24 01:26:00,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2024-11-24 01:26:00,444 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:26:00,445 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:26:00,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-24 01:26:00,445 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:26:00,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:26:00,446 INFO L85 PathProgramCache]: Analyzing trace with hash -870015559, now seen corresponding path program 1 times [2024-11-24 01:26:00,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:26:00,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248828022] [2024-11-24 01:26:00,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:26:00,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:26:00,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-24 01:26:00,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1308900247] [2024-11-24 01:26:00,607 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:26:00,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:26:00,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38c93910-b627-49fc-84b0-ae35025418bd/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:26:00,611 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38c93910-b627-49fc-84b0-ae35025418bd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:26:00,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38c93910-b627-49fc-84b0-ae35025418bd/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 01:26:00,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:26:00,917 INFO L256 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-24 01:26:00,934 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:26:01,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-24 01:26:01,330 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:26:01,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:26:01,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248828022] [2024-11-24 01:26:01,331 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-24 01:26:01,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308900247] [2024-11-24 01:26:01,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308900247] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:26:01,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:26:01,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:26:01,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932920903] [2024-11-24 01:26:01,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:26:01,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:26:01,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:26:01,333 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:26:01,333 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:26:01,334 INFO L87 Difference]: Start difference. First operand 22369 states and 31235 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34)