./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-58.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_463f8b4c-e55b-4c66-8697-7de4a6643688/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463f8b4c-e55b-4c66-8697-7de4a6643688/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_463f8b4c-e55b-4c66-8697-7de4a6643688/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463f8b4c-e55b-4c66-8697-7de4a6643688/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-58.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463f8b4c-e55b-4c66-8697-7de4a6643688/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_463f8b4c-e55b-4c66-8697-7de4a6643688/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 a5c711320733ec5ec88386ef11b3881177c4cbe73d1fa7ee8dbba5cbbbbb7035 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 18:35:12,922 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 18:35:13,039 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463f8b4c-e55b-4c66-8697-7de4a6643688/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 18:35:13,045 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 18:35:13,045 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 18:35:13,072 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 18:35:13,073 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 18:35:13,073 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 18:35:13,073 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 18:35:13,074 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 18:35:13,074 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 18:35:13,074 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 18:35:13,074 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 18:35:13,074 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 18:35:13,074 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 18:35:13,075 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 18:35:13,075 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 18:35:13,075 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 18:35:13,075 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 18:35:13,075 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 18:35:13,075 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 18:35:13,075 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 18:35:13,076 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 18:35:13,076 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 18:35:13,076 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 18:35:13,076 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 18:35:13,076 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 18:35:13,076 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 18:35:13,076 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 18:35:13,076 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:35:13,077 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:35:13,077 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:35:13,077 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:35:13,077 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 18:35:13,077 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:35:13,077 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:35:13,077 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:35:13,077 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:35:13,078 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 18:35:13,078 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 18:35:13,078 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 18:35:13,078 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 18:35:13,078 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 18:35:13,078 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 18:35:13,078 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 18:35:13,078 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 18:35:13,079 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 18:35:13,079 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 18:35:13,079 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_463f8b4c-e55b-4c66-8697-7de4a6643688/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 -> a5c711320733ec5ec88386ef11b3881177c4cbe73d1fa7ee8dbba5cbbbbb7035 [2024-11-23 18:35:13,461 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 18:35:13,478 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 18:35:13,485 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 18:35:13,487 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 18:35:13,488 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 18:35:13,489 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463f8b4c-e55b-4c66-8697-7de4a6643688/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-58.i [2024-11-23 18:35:16,599 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463f8b4c-e55b-4c66-8697-7de4a6643688/bin/uautomizer-verify-LYvppIcaGC/data/98be328a6/57f76aabd4ce4ec9a4590e249cb7d9c0/FLAG199c97485 [2024-11-23 18:35:16,983 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 18:35:16,983 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463f8b4c-e55b-4c66-8697-7de4a6643688/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-58.i [2024-11-23 18:35:17,007 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463f8b4c-e55b-4c66-8697-7de4a6643688/bin/uautomizer-verify-LYvppIcaGC/data/98be328a6/57f76aabd4ce4ec9a4590e249cb7d9c0/FLAG199c97485 [2024-11-23 18:35:17,029 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463f8b4c-e55b-4c66-8697-7de4a6643688/bin/uautomizer-verify-LYvppIcaGC/data/98be328a6/57f76aabd4ce4ec9a4590e249cb7d9c0 [2024-11-23 18:35:17,032 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 18:35:17,035 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 18:35:17,037 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 18:35:17,037 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 18:35:17,044 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 18:35:17,045 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:35:17" (1/1) ... [2024-11-23 18:35:17,046 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cd2d064 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:35:17, skipping insertion in model container [2024-11-23 18:35:17,046 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:35:17" (1/1) ... [2024-11-23 18:35:17,079 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 18:35:17,286 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_463f8b4c-e55b-4c66-8697-7de4a6643688/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-58.i[919,932] [2024-11-23 18:35:17,435 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:35:17,453 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 18:35:17,466 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_463f8b4c-e55b-4c66-8697-7de4a6643688/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-58.i[919,932] [2024-11-23 18:35:17,525 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:35:17,558 INFO L204 MainTranslator]: Completed translation [2024-11-23 18:35:17,559 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:35:17 WrapperNode [2024-11-23 18:35:17,559 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 18:35:17,560 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 18:35:17,561 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 18:35:17,561 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 18:35:17,569 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:35:17" (1/1) ... [2024-11-23 18:35:17,581 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:35:17" (1/1) ... [2024-11-23 18:35:17,624 INFO L138 Inliner]: procedures = 26, calls = 50, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 251 [2024-11-23 18:35:17,624 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 18:35:17,625 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 18:35:17,625 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 18:35:17,625 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 18:35:17,636 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:35:17" (1/1) ... [2024-11-23 18:35:17,636 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:35:17" (1/1) ... [2024-11-23 18:35:17,643 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:35:17" (1/1) ... [2024-11-23 18:35:17,673 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 18:35:17,677 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:35:17" (1/1) ... [2024-11-23 18:35:17,677 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:35:17" (1/1) ... [2024-11-23 18:35:17,695 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:35:17" (1/1) ... [2024-11-23 18:35:17,700 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:35:17" (1/1) ... [2024-11-23 18:35:17,704 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:35:17" (1/1) ... [2024-11-23 18:35:17,707 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:35:17" (1/1) ... [2024-11-23 18:35:17,709 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:35:17" (1/1) ... [2024-11-23 18:35:17,713 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 18:35:17,714 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 18:35:17,714 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 18:35:17,714 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 18:35:17,715 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:35:17" (1/1) ... [2024-11-23 18:35:17,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:35:17,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463f8b4c-e55b-4c66-8697-7de4a6643688/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:35:17,751 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463f8b4c-e55b-4c66-8697-7de4a6643688/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 18:35:17,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463f8b4c-e55b-4c66-8697-7de4a6643688/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 18:35:17,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 18:35:17,784 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-23 18:35:17,784 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-23 18:35:17,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 18:35:17,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 18:35:17,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 18:35:17,888 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 18:35:17,890 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 18:35:18,655 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-23 18:35:18,655 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 18:35:18,714 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 18:35:18,716 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 18:35:18,716 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:35:18 BoogieIcfgContainer [2024-11-23 18:35:18,716 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 18:35:18,720 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 18:35:18,721 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 18:35:18,727 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 18:35:18,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 06:35:17" (1/3) ... [2024-11-23 18:35:18,730 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@419381b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:35:18, skipping insertion in model container [2024-11-23 18:35:18,730 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:35:17" (2/3) ... [2024-11-23 18:35:18,732 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@419381b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:35:18, skipping insertion in model container [2024-11-23 18:35:18,732 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:35:18" (3/3) ... [2024-11-23 18:35:18,733 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-co_file-58.i [2024-11-23 18:35:18,751 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 18:35:18,754 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-pe-co_file-58.i that has 2 procedures, 109 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 18:35:18,837 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 18:35:18,854 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;@6b19ecb7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 18:35:18,854 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 18:35:18,858 INFO L276 IsEmpty]: Start isEmpty. Operand has 109 states, 69 states have (on average 1.463768115942029) internal successors, (101), 70 states have internal predecessors, (101), 37 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-11-23 18:35:18,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-23 18:35:18,879 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:35:18,880 INFO L218 NwaCegarLoop]: trace histogram [37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:35:18,880 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:35:18,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:35:18,887 INFO L85 PathProgramCache]: Analyzing trace with hash -697093065, now seen corresponding path program 1 times [2024-11-23 18:35:18,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:35:18,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418390080] [2024-11-23 18:35:18,898 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:35:18,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:35:19,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:35:19,462 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 2592 trivial. 0 not checked. [2024-11-23 18:35:19,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:35:19,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418390080] [2024-11-23 18:35:19,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418390080] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:35:19,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152628430] [2024-11-23 18:35:19,467 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:35:19,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:35:19,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463f8b4c-e55b-4c66-8697-7de4a6643688/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:35:19,473 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463f8b4c-e55b-4c66-8697-7de4a6643688/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:35:19,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463f8b4c-e55b-4c66-8697-7de4a6643688/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 18:35:19,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:35:19,849 INFO L256 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-23 18:35:19,902 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:35:19,969 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 2592 trivial. 0 not checked. [2024-11-23 18:35:19,969 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:35:19,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152628430] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:35:19,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:35:19,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-23 18:35:19,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377094702] [2024-11-23 18:35:19,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:35:19,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 18:35:19,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:35:20,012 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 18:35:20,012 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 18:35:20,016 INFO L87 Difference]: Start difference. First operand has 109 states, 69 states have (on average 1.463768115942029) internal successors, (101), 70 states have internal predecessors, (101), 37 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 2 states have call successors, (37) [2024-11-23 18:35:20,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:35:20,083 INFO L93 Difference]: Finished difference Result 211 states and 381 transitions. [2024-11-23 18:35:20,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 18:35:20,086 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 2 states have call successors, (37) Word has length 231 [2024-11-23 18:35:20,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:35:20,100 INFO L225 Difference]: With dead ends: 211 [2024-11-23 18:35:20,100 INFO L226 Difference]: Without dead ends: 105 [2024-11-23 18:35:20,106 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 232 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 18:35:20,112 INFO L435 NwaCegarLoop]: 167 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, 167 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 18:35:20,113 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:35:20,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-23 18:35:20,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2024-11-23 18:35:20,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 66 states have (on average 1.4090909090909092) internal successors, (93), 66 states have internal predecessors, (93), 37 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-11-23 18:35:20,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 167 transitions. [2024-11-23 18:35:20,199 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 167 transitions. Word has length 231 [2024-11-23 18:35:20,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:35:20,202 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 167 transitions. [2024-11-23 18:35:20,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 2 states have call successors, (37) [2024-11-23 18:35:20,202 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 167 transitions. [2024-11-23 18:35:20,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-23 18:35:20,210 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:35:20,211 INFO L218 NwaCegarLoop]: trace histogram [37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:35:20,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463f8b4c-e55b-4c66-8697-7de4a6643688/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 18:35:20,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463f8b4c-e55b-4c66-8697-7de4a6643688/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:35:20,413 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:35:20,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:35:20,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1419483509, now seen corresponding path program 1 times [2024-11-23 18:35:20,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:35:20,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120011313] [2024-11-23 18:35:20,414 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:35:20,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:35:20,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:35:21,712 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-11-23 18:35:21,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:35:21,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120011313] [2024-11-23 18:35:21,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120011313] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:35:21,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:35:21,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:35:21,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289313509] [2024-11-23 18:35:21,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:35:21,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:35:21,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:35:21,720 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:35:21,720 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:35:21,720 INFO L87 Difference]: Start difference. First operand 105 states and 167 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 1 states have call successors, (37) [2024-11-23 18:35:21,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:35:21,990 INFO L93 Difference]: Finished difference Result 272 states and 433 transitions. [2024-11-23 18:35:21,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:35:21,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 1 states have call successors, (37) Word has length 231 [2024-11-23 18:35:21,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:35:21,999 INFO L225 Difference]: With dead ends: 272 [2024-11-23 18:35:21,999 INFO L226 Difference]: Without dead ends: 170 [2024-11-23 18:35:22,000 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:35:22,001 INFO L435 NwaCegarLoop]: 201 mSDtfsCounter, 95 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 18:35:22,006 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 346 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 18:35:22,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-23 18:35:22,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 167. [2024-11-23 18:35:22,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 110 states have (on average 1.4363636363636363) internal successors, (158), 111 states have internal predecessors, (158), 54 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-23 18:35:22,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 266 transitions. [2024-11-23 18:35:22,092 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 266 transitions. Word has length 231 [2024-11-23 18:35:22,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:35:22,093 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 266 transitions. [2024-11-23 18:35:22,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 1 states have call successors, (37) [2024-11-23 18:35:22,093 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 266 transitions. [2024-11-23 18:35:22,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-23 18:35:22,101 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:35:22,101 INFO L218 NwaCegarLoop]: trace histogram [37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:35:22,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 18:35:22,102 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:35:22,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:35:22,102 INFO L85 PathProgramCache]: Analyzing trace with hash 2006289523, now seen corresponding path program 1 times [2024-11-23 18:35:22,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:35:22,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760245154] [2024-11-23 18:35:22,103 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:35:22,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:35:22,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:41:16,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-11-23 18:41:16,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:41:16,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760245154] [2024-11-23 18:41:16,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760245154] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:41:16,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:41:16,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-23 18:41:16,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770790770] [2024-11-23 18:41:16,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:41:16,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 18:41:16,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:41:16,689 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 18:41:16,690 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-23 18:41:16,690 INFO L87 Difference]: Start difference. First operand 167 states and 266 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 1 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 1 states have call successors, (37) [2024-11-23 18:41:25,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:41:25,977 INFO L93 Difference]: Finished difference Result 483 states and 773 transitions. [2024-11-23 18:41:25,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 18:41:25,979 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 1 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 1 states have call successors, (37) Word has length 231 [2024-11-23 18:41:25,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:41:25,991 INFO L225 Difference]: With dead ends: 483 [2024-11-23 18:41:25,991 INFO L226 Difference]: Without dead ends: 481 [2024-11-23 18:41:25,993 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2024-11-23 18:41:25,994 INFO L435 NwaCegarLoop]: 132 mSDtfsCounter, 362 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2024-11-23 18:41:25,996 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 818 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2024-11-23 18:41:25,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2024-11-23 18:41:26,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 227. [2024-11-23 18:41:26,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 170 states have (on average 1.5) internal successors, (255), 171 states have internal predecessors, (255), 54 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-23 18:41:26,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 363 transitions. [2024-11-23 18:41:26,083 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 363 transitions. Word has length 231 [2024-11-23 18:41:26,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:41:26,087 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 363 transitions. [2024-11-23 18:41:26,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 1 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 1 states have call successors, (37) [2024-11-23 18:41:26,088 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 363 transitions. [2024-11-23 18:41:26,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-23 18:41:26,096 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:41:26,096 INFO L218 NwaCegarLoop]: trace histogram [37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:41:26,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 18:41:26,097 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:41:26,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:41:26,100 INFO L85 PathProgramCache]: Analyzing trace with hash 417941621, now seen corresponding path program 1 times [2024-11-23 18:41:26,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:41:26,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683919565] [2024-11-23 18:41:26,100 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:41:26,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:41:26,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:50:05,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-11-23 18:50:05,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:50:05,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683919565] [2024-11-23 18:50:05,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683919565] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:50:05,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:50:05,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-23 18:50:05,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636062382] [2024-11-23 18:50:05,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:50:05,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 18:50:05,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:50:05,203 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 18:50:05,203 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-23 18:50:05,203 INFO L87 Difference]: Start difference. First operand 227 states and 363 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 1 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 1 states have call successors, (37) [2024-11-23 18:50:10,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:50:10,286 INFO L93 Difference]: Finished difference Result 533 states and 854 transitions. [2024-11-23 18:50:10,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 18:50:10,288 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 1 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 1 states have call successors, (37) Word has length 231 [2024-11-23 18:50:10,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:50:10,292 INFO L225 Difference]: With dead ends: 533 [2024-11-23 18:50:10,292 INFO L226 Difference]: Without dead ends: 531 [2024-11-23 18:50:10,293 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2024-11-23 18:50:10,294 INFO L435 NwaCegarLoop]: 161 mSDtfsCounter, 294 mSDsluCounter, 976 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 1137 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-23 18:50:10,294 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 1137 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-23 18:50:10,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2024-11-23 18:50:10,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 227. [2024-11-23 18:50:10,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 170 states have (on average 1.5) internal successors, (255), 171 states have internal predecessors, (255), 54 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-23 18:50:10,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 363 transitions. [2024-11-23 18:50:10,335 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 363 transitions. Word has length 231 [2024-11-23 18:50:10,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:50:10,336 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 363 transitions. [2024-11-23 18:50:10,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 1 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 1 states have call successors, (37) [2024-11-23 18:50:10,336 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 363 transitions. [2024-11-23 18:50:10,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-23 18:50:10,340 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:50:10,341 INFO L218 NwaCegarLoop]: trace histogram [37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:50:10,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 18:50:10,341 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:50:10,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:50:10,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1865975947, now seen corresponding path program 1 times [2024-11-23 18:50:10,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:50:10,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194642094] [2024-11-23 18:50:10,342 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:50:10,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:50:10,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:50:11,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-11-23 18:50:11,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:50:11,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194642094] [2024-11-23 18:50:11,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194642094] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:50:11,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:50:11,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 18:50:11,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734270879] [2024-11-23 18:50:11,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:50:11,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 18:50:11,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:50:11,088 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 18:50:11,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:50:11,089 INFO L87 Difference]: Start difference. First operand 227 states and 363 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2024-11-23 18:50:11,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:50:11,834 INFO L93 Difference]: Finished difference Result 621 states and 996 transitions. [2024-11-23 18:50:11,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 18:50:11,835 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 231 [2024-11-23 18:50:11,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:50:11,838 INFO L225 Difference]: With dead ends: 621 [2024-11-23 18:50:11,838 INFO L226 Difference]: Without dead ends: 397 [2024-11-23 18:50:11,844 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-23 18:50:11,844 INFO L435 NwaCegarLoop]: 207 mSDtfsCounter, 166 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-23 18:50:11,846 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 876 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-23 18:50:11,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2024-11-23 18:50:11,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 393. [2024-11-23 18:50:11,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 280 states have (on average 1.4785714285714286) internal successors, (414), 282 states have internal predecessors, (414), 108 states have call successors, (108), 4 states have call predecessors, (108), 4 states have return successors, (108), 106 states have call predecessors, (108), 108 states have call successors, (108) [2024-11-23 18:50:11,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 630 transitions. [2024-11-23 18:50:11,929 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 630 transitions. Word has length 231 [2024-11-23 18:50:11,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:50:11,933 INFO L471 AbstractCegarLoop]: Abstraction has 393 states and 630 transitions. [2024-11-23 18:50:11,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2024-11-23 18:50:11,934 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 630 transitions. [2024-11-23 18:50:11,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-23 18:50:11,936 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:50:11,936 INFO L218 NwaCegarLoop]: trace histogram [37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:50:11,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 18:50:11,936 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:50:11,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:50:11,937 INFO L85 PathProgramCache]: Analyzing trace with hash 2035964339, now seen corresponding path program 1 times [2024-11-23 18:50:11,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:50:11,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323635963] [2024-11-23 18:50:11,937 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:50:11,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:50:12,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat