./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-98.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_cb7b6e60-9217-4f17-9f49-8e4a9368c95c/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb7b6e60-9217-4f17-9f49-8e4a9368c95c/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_cb7b6e60-9217-4f17-9f49-8e4a9368c95c/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb7b6e60-9217-4f17-9f49-8e4a9368c95c/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-98.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb7b6e60-9217-4f17-9f49-8e4a9368c95c/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_cb7b6e60-9217-4f17-9f49-8e4a9368c95c/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 a92f5d1a6a5590db64f6b8ed4b8fabeff75b2e4cde71258ed22ec8ba2c9c0069 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 22:52:51,273 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 22:52:51,337 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb7b6e60-9217-4f17-9f49-8e4a9368c95c/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 22:52:51,342 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 22:52:51,343 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 22:52:51,367 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 22:52:51,368 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 22:52:51,368 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 22:52:51,369 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 22:52:51,369 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 22:52:51,369 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 22:52:51,369 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 22:52:51,370 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 22:52:51,370 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 22:52:51,370 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 22:52:51,370 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 22:52:51,370 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 22:52:51,370 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 22:52:51,371 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 22:52:51,371 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 22:52:51,371 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 22:52:51,371 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 22:52:51,371 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 22:52:51,371 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 22:52:51,372 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 22:52:51,372 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 22:52:51,372 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 22:52:51,372 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 22:52:51,372 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 22:52:51,372 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:52:51,373 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:52:51,373 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:52:51,373 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:52:51,373 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 22:52:51,373 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:52:51,373 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:52:51,373 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:52:51,373 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:52:51,373 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 22:52:51,373 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 22:52:51,373 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 22:52:51,373 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 22:52:51,374 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 22:52:51,374 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 22:52:51,374 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 22:52:51,374 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 22:52:51,374 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 22:52:51,374 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 22:52:51,374 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_cb7b6e60-9217-4f17-9f49-8e4a9368c95c/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 -> a92f5d1a6a5590db64f6b8ed4b8fabeff75b2e4cde71258ed22ec8ba2c9c0069 [2024-11-23 22:52:51,741 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 22:52:51,756 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 22:52:51,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 22:52:51,762 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 22:52:51,763 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 22:52:51,765 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb7b6e60-9217-4f17-9f49-8e4a9368c95c/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-98.i [2024-11-23 22:52:55,231 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb7b6e60-9217-4f17-9f49-8e4a9368c95c/bin/uautomizer-verify-LYvppIcaGC/data/7f6003c44/986afc1025b5420aafdc3800d8375cc4/FLAG0bbca6772 [2024-11-23 22:52:55,586 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 22:52:55,589 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb7b6e60-9217-4f17-9f49-8e4a9368c95c/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-98.i [2024-11-23 22:52:55,605 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb7b6e60-9217-4f17-9f49-8e4a9368c95c/bin/uautomizer-verify-LYvppIcaGC/data/7f6003c44/986afc1025b5420aafdc3800d8375cc4/FLAG0bbca6772 [2024-11-23 22:52:55,813 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb7b6e60-9217-4f17-9f49-8e4a9368c95c/bin/uautomizer-verify-LYvppIcaGC/data/7f6003c44/986afc1025b5420aafdc3800d8375cc4 [2024-11-23 22:52:55,815 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 22:52:55,817 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 22:52:55,818 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 22:52:55,818 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 22:52:55,823 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 22:52:55,824 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:52:55" (1/1) ... [2024-11-23 22:52:55,825 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5397faab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:52:55, skipping insertion in model container [2024-11-23 22:52:55,826 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:52:55" (1/1) ... [2024-11-23 22:52:55,857 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 22:52:56,055 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_cb7b6e60-9217-4f17-9f49-8e4a9368c95c/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-98.i[916,929] [2024-11-23 22:52:56,300 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:52:56,319 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 22:52:56,333 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_cb7b6e60-9217-4f17-9f49-8e4a9368c95c/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-98.i[916,929] [2024-11-23 22:52:56,472 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:52:56,504 INFO L204 MainTranslator]: Completed translation [2024-11-23 22:52:56,504 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:52:56 WrapperNode [2024-11-23 22:52:56,505 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 22:52:56,506 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 22:52:56,506 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 22:52:56,506 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 22:52:56,518 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:52:56" (1/1) ... [2024-11-23 22:52:56,536 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:52:56" (1/1) ... [2024-11-23 22:52:56,633 INFO L138 Inliner]: procedures = 26, calls = 100, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 561 [2024-11-23 22:52:56,634 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 22:52:56,635 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 22:52:56,636 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 22:52:56,636 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 22:52:56,647 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:52:56" (1/1) ... [2024-11-23 22:52:56,647 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:52:56" (1/1) ... [2024-11-23 22:52:56,663 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:52:56" (1/1) ... [2024-11-23 22:52:56,713 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]. [2024-11-23 22:52:56,714 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:52:56" (1/1) ... [2024-11-23 22:52:56,714 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:52:56" (1/1) ... [2024-11-23 22:52:56,745 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:52:56" (1/1) ... [2024-11-23 22:52:56,751 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:52:56" (1/1) ... [2024-11-23 22:52:56,761 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:52:56" (1/1) ... [2024-11-23 22:52:56,774 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:52:56" (1/1) ... [2024-11-23 22:52:56,782 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:52:56" (1/1) ... [2024-11-23 22:52:56,793 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 22:52:56,796 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 22:52:56,797 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 22:52:56,797 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 22:52:56,799 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:52:56" (1/1) ... [2024-11-23 22:52:56,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:52:56,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb7b6e60-9217-4f17-9f49-8e4a9368c95c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:52:56,840 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb7b6e60-9217-4f17-9f49-8e4a9368c95c/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 22:52:56,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb7b6e60-9217-4f17-9f49-8e4a9368c95c/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 22:52:56,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 22:52:56,880 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-23 22:52:56,880 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-23 22:52:56,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 22:52:56,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 22:52:56,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 22:52:57,069 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 22:52:57,073 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 22:52:58,426 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2024-11-23 22:52:58,426 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 22:52:58,456 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 22:52:58,456 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 22:52:58,456 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:52:58 BoogieIcfgContainer [2024-11-23 22:52:58,456 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 22:52:58,461 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 22:52:58,462 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 22:52:58,467 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 22:52:58,468 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:52:55" (1/3) ... [2024-11-23 22:52:58,468 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ba79dd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:52:58, skipping insertion in model container [2024-11-23 22:52:58,468 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:52:56" (2/3) ... [2024-11-23 22:52:58,469 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ba79dd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:52:58, skipping insertion in model container [2024-11-23 22:52:58,469 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:52:58" (3/3) ... [2024-11-23 22:52:58,470 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-98.i [2024-11-23 22:52:58,489 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 22:52:58,492 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-98.i that has 2 procedures, 243 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 22:52:58,578 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 22:52:58,596 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;@3fb8f7e7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 22:52:58,596 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 22:52:58,600 INFO L276 IsEmpty]: Start isEmpty. Operand has 243 states, 153 states have (on average 1.5032679738562091) internal successors, (230), 154 states have internal predecessors, (230), 87 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2024-11-23 22:52:58,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2024-11-23 22:52:58,629 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:52:58,630 INFO L218 NwaCegarLoop]: trace histogram [87, 87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:52:58,630 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:52:58,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:52:58,636 INFO L85 PathProgramCache]: Analyzing trace with hash -281747702, now seen corresponding path program 1 times [2024-11-23 22:52:58,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:52:58,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918228715] [2024-11-23 22:52:58,645 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:52:58,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:52:58,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:52:59,566 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 14792 trivial. 0 not checked. [2024-11-23 22:52:59,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:52:59,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918228715] [2024-11-23 22:52:59,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918228715] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:52:59,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296916646] [2024-11-23 22:52:59,568 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:52:59,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:52:59,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb7b6e60-9217-4f17-9f49-8e4a9368c95c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:52:59,571 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb7b6e60-9217-4f17-9f49-8e4a9368c95c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:52:59,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb7b6e60-9217-4f17-9f49-8e4a9368c95c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 22:53:00,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:53:00,092 INFO L256 TraceCheckSpWp]: Trace formula consists of 1162 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-23 22:53:00,124 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:53:00,221 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 14792 trivial. 0 not checked. [2024-11-23 22:53:00,221 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:53:00,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296916646] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:53:00,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:53:00,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-23 22:53:00,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012886520] [2024-11-23 22:53:00,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:53:00,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 22:53:00,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:53:00,249 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 22:53:00,250 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 22:53:00,252 INFO L87 Difference]: Start difference. First operand has 243 states, 153 states have (on average 1.5032679738562091) internal successors, (230), 154 states have internal predecessors, (230), 87 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) Second operand has 2 states, 2 states have (on average 52.5) internal successors, (105), 2 states have internal predecessors, (105), 2 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 2 states have call successors, (87) [2024-11-23 22:53:00,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:53:00,317 INFO L93 Difference]: Finished difference Result 476 states and 883 transitions. [2024-11-23 22:53:00,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 22:53:00,319 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 52.5) internal successors, (105), 2 states have internal predecessors, (105), 2 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 2 states have call successors, (87) Word has length 535 [2024-11-23 22:53:00,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:53:00,329 INFO L225 Difference]: With dead ends: 476 [2024-11-23 22:53:00,329 INFO L226 Difference]: Without dead ends: 236 [2024-11-23 22:53:00,335 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 536 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 22:53:00,338 INFO L435 NwaCegarLoop]: 389 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, 389 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 [2024-11-23 22:53:00,339 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:53:00,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2024-11-23 22:53:00,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2024-11-23 22:53:00,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 147 states have (on average 1.4625850340136055) internal successors, (215), 147 states have internal predecessors, (215), 87 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2024-11-23 22:53:00,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 389 transitions. [2024-11-23 22:53:00,447 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 389 transitions. Word has length 535 [2024-11-23 22:53:00,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:53:00,449 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 389 transitions. [2024-11-23 22:53:00,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 52.5) internal successors, (105), 2 states have internal predecessors, (105), 2 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 2 states have call successors, (87) [2024-11-23 22:53:00,453 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 389 transitions. [2024-11-23 22:53:00,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2024-11-23 22:53:00,473 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:53:00,473 INFO L218 NwaCegarLoop]: trace histogram [87, 87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:53:00,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb7b6e60-9217-4f17-9f49-8e4a9368c95c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 22:53:00,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb7b6e60-9217-4f17-9f49-8e4a9368c95c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-23 22:53:00,674 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:53:00,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:53:00,675 INFO L85 PathProgramCache]: Analyzing trace with hash 825818057, now seen corresponding path program 1 times [2024-11-23 22:53:00,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:53:00,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300862619] [2024-11-23 22:53:00,676 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:53:00,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:53:01,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:53:03,384 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14964 trivial. 0 not checked. [2024-11-23 22:53:03,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:53:03,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300862619] [2024-11-23 22:53:03,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300862619] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:53:03,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:53:03,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:53:03,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610621333] [2024-11-23 22:53:03,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:53:03,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:53:03,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:53:03,394 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:53:03,394 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:53:03,395 INFO L87 Difference]: Start difference. First operand 236 states and 389 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) [2024-11-23 22:53:03,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:53:03,496 INFO L93 Difference]: Finished difference Result 470 states and 777 transitions. [2024-11-23 22:53:03,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:53:03,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) Word has length 536 [2024-11-23 22:53:03,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:53:03,506 INFO L225 Difference]: With dead ends: 470 [2024-11-23 22:53:03,509 INFO L226 Difference]: Without dead ends: 237 [2024-11-23 22:53:03,511 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:53:03,512 INFO L435 NwaCegarLoop]: 388 mSDtfsCounter, 0 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:53:03,513 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 770 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:53:03,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2024-11-23 22:53:03,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2024-11-23 22:53:03,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 148 states have (on average 1.4594594594594594) internal successors, (216), 148 states have internal predecessors, (216), 87 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2024-11-23 22:53:03,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 390 transitions. [2024-11-23 22:53:03,577 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 390 transitions. Word has length 536 [2024-11-23 22:53:03,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:53:03,585 INFO L471 AbstractCegarLoop]: Abstraction has 237 states and 390 transitions. [2024-11-23 22:53:03,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) [2024-11-23 22:53:03,586 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 390 transitions. [2024-11-23 22:53:03,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2024-11-23 22:53:03,595 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:53:03,596 INFO L218 NwaCegarLoop]: trace histogram [87, 87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:53:03,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 22:53:03,596 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:53:03,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:53:03,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1195850769, now seen corresponding path program 1 times [2024-11-23 22:53:03,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:53:03,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797808863] [2024-11-23 22:53:03,598 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:53:03,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:53:03,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:53:05,314 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14964 trivial. 0 not checked. [2024-11-23 22:53:05,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:53:05,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797808863] [2024-11-23 22:53:05,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797808863] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:53:05,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:53:05,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:53:05,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984745470] [2024-11-23 22:53:05,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:53:05,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:53:05,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:53:05,317 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:53:05,317 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:53:05,317 INFO L87 Difference]: Start difference. First operand 237 states and 390 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) [2024-11-23 22:53:05,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:53:05,581 INFO L93 Difference]: Finished difference Result 682 states and 1129 transitions. [2024-11-23 22:53:05,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:53:05,582 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) Word has length 536 [2024-11-23 22:53:05,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:53:05,591 INFO L225 Difference]: With dead ends: 682 [2024-11-23 22:53:05,593 INFO L226 Difference]: Without dead ends: 448 [2024-11-23 22:53:05,595 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 [2024-11-23 22:53:05,597 INFO L435 NwaCegarLoop]: 720 mSDtfsCounter, 381 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 1071 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 22:53:05,598 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 1071 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 22:53:05,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2024-11-23 22:53:05,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 237. [2024-11-23 22:53:05,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 148 states have (on average 1.4527027027027026) internal successors, (215), 148 states have internal predecessors, (215), 87 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2024-11-23 22:53:05,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 389 transitions. [2024-11-23 22:53:05,669 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 389 transitions. Word has length 536 [2024-11-23 22:53:05,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:53:05,672 INFO L471 AbstractCegarLoop]: Abstraction has 237 states and 389 transitions. [2024-11-23 22:53:05,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) [2024-11-23 22:53:05,673 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 389 transitions. [2024-11-23 22:53:05,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2024-11-23 22:53:05,679 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:53:05,680 INFO L218 NwaCegarLoop]: trace histogram [87, 87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:53:05,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 22:53:05,680 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:53:05,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:53:05,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1454016207, now seen corresponding path program 1 times [2024-11-23 22:53:05,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:53:05,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606500058] [2024-11-23 22:53:05,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:53:05,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:53:06,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:53:09,708 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14964 trivial. 0 not checked. [2024-11-23 22:53:09,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:53:09,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606500058] [2024-11-23 22:53:09,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606500058] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:53:09,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:53:09,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 22:53:09,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616859878] [2024-11-23 22:53:09,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:53:09,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 22:53:09,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:53:09,715 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 22:53:09,715 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:53:09,716 INFO L87 Difference]: Start difference. First operand 237 states and 389 transitions. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) [2024-11-23 22:53:12,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:53:12,215 INFO L93 Difference]: Finished difference Result 964 states and 1583 transitions. [2024-11-23 22:53:12,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 22:53:12,216 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) Word has length 536 [2024-11-23 22:53:12,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:53:12,234 INFO L225 Difference]: With dead ends: 964 [2024-11-23 22:53:12,234 INFO L226 Difference]: Without dead ends: 730 [2024-11-23 22:53:12,236 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:53:12,239 INFO L435 NwaCegarLoop]: 717 mSDtfsCounter, 1020 mSDsluCounter, 1603 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1020 SdHoareTripleChecker+Valid, 2320 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-23 22:53:12,240 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1020 Valid, 2320 Invalid, 835 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [176 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-23 22:53:12,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2024-11-23 22:53:12,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 512. [2024-11-23 22:53:12,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 314 states have (on average 1.4331210191082802) internal successors, (450), 315 states have internal predecessors, (450), 194 states have call successors, (194), 3 states have call predecessors, (194), 3 states have return successors, (194), 193 states have call predecessors, (194), 194 states have call successors, (194) [2024-11-23 22:53:12,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 838 transitions. [2024-11-23 22:53:12,511 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 838 transitions. Word has length 536 [2024-11-23 22:53:12,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:53:12,514 INFO L471 AbstractCegarLoop]: Abstraction has 512 states and 838 transitions. [2024-11-23 22:53:12,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 1 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 1 states have call predecessors, (87), 1 states have call successors, (87) [2024-11-23 22:53:12,515 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 838 transitions. [2024-11-23 22:53:12,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2024-11-23 22:53:12,520 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:53:12,521 INFO L218 NwaCegarLoop]: trace histogram [87, 87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:53:12,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 22:53:12,521 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:53:12,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:53:12,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1065943727, now seen corresponding path program 1 times [2024-11-23 22:53:12,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:53:12,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558364615] [2024-11-23 22:53:12,524 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:53:12,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:53:12,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat