./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-52.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_407c1f1b-7f7a-4346-93ae-6f2e9b41fca8/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407c1f1b-7f7a-4346-93ae-6f2e9b41fca8/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_407c1f1b-7f7a-4346-93ae-6f2e9b41fca8/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407c1f1b-7f7a-4346-93ae-6f2e9b41fca8/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-52.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407c1f1b-7f7a-4346-93ae-6f2e9b41fca8/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_407c1f1b-7f7a-4346-93ae-6f2e9b41fca8/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 18819524c4696c98829402bf6bc4e99abd24bef1d74fc8ec0e3ebc5e4b11aa39 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 02:05:07,357 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 02:05:07,484 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407c1f1b-7f7a-4346-93ae-6f2e9b41fca8/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 02:05:07,490 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 02:05:07,490 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 02:05:07,540 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 02:05:07,542 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 02:05:07,543 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 02:05:07,544 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 02:05:07,544 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 02:05:07,545 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 02:05:07,545 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 02:05:07,545 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 02:05:07,546 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 02:05:07,546 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 02:05:07,546 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 02:05:07,546 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 02:05:07,546 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 02:05:07,546 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 02:05:07,547 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 02:05:07,547 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 02:05:07,547 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 02:05:07,547 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 02:05:07,547 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 02:05:07,547 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 02:05:07,547 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 02:05:07,547 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 02:05:07,547 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 02:05:07,547 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 02:05:07,548 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 02:05:07,548 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 02:05:07,548 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 02:05:07,548 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 02:05:07,548 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 02:05:07,548 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 02:05:07,548 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 02:05:07,548 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 02:05:07,548 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 02:05:07,548 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 02:05:07,549 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 02:05:07,549 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 02:05:07,549 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 02:05:07,549 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 02:05:07,549 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 02:05:07,549 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 02:05:07,549 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 02:05:07,549 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 02:05:07,549 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 02:05:07,549 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_407c1f1b-7f7a-4346-93ae-6f2e9b41fca8/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 -> 18819524c4696c98829402bf6bc4e99abd24bef1d74fc8ec0e3ebc5e4b11aa39 [2024-11-24 02:05:07,945 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 02:05:07,962 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 02:05:07,965 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 02:05:07,967 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 02:05:07,967 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 02:05:07,971 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407c1f1b-7f7a-4346-93ae-6f2e9b41fca8/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-52.i [2024-11-24 02:05:11,506 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407c1f1b-7f7a-4346-93ae-6f2e9b41fca8/bin/uautomizer-verify-LYvppIcaGC/data/8071f5671/43da83f4dabc4794ab384d919799314c/FLAG9f8ebbf8f [2024-11-24 02:05:11,936 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 02:05:11,936 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407c1f1b-7f7a-4346-93ae-6f2e9b41fca8/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-52.i [2024-11-24 02:05:11,960 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407c1f1b-7f7a-4346-93ae-6f2e9b41fca8/bin/uautomizer-verify-LYvppIcaGC/data/8071f5671/43da83f4dabc4794ab384d919799314c/FLAG9f8ebbf8f [2024-11-24 02:05:11,988 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407c1f1b-7f7a-4346-93ae-6f2e9b41fca8/bin/uautomizer-verify-LYvppIcaGC/data/8071f5671/43da83f4dabc4794ab384d919799314c [2024-11-24 02:05:11,994 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 02:05:11,996 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 02:05:11,998 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 02:05:11,998 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 02:05:12,004 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 02:05:12,005 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 02:05:11" (1/1) ... [2024-11-24 02:05:12,007 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e810a6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:12, skipping insertion in model container [2024-11-24 02:05:12,007 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 02:05:11" (1/1) ... [2024-11-24 02:05:12,053 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 02:05:12,274 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_407c1f1b-7f7a-4346-93ae-6f2e9b41fca8/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-52.i[916,929] [2024-11-24 02:05:12,455 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 02:05:12,482 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 02:05:12,498 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_407c1f1b-7f7a-4346-93ae-6f2e9b41fca8/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-52.i[916,929] [2024-11-24 02:05:12,577 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 02:05:12,609 INFO L204 MainTranslator]: Completed translation [2024-11-24 02:05:12,610 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:12 WrapperNode [2024-11-24 02:05:12,611 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 02:05:12,612 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 02:05:12,612 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 02:05:12,613 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 02:05:12,625 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:12" (1/1) ... [2024-11-24 02:05:12,647 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:12" (1/1) ... [2024-11-24 02:05:12,694 INFO L138 Inliner]: procedures = 26, calls = 59, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 313 [2024-11-24 02:05:12,694 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 02:05:12,695 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 02:05:12,695 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 02:05:12,695 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 02:05:12,709 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:12" (1/1) ... [2024-11-24 02:05:12,711 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:12" (1/1) ... [2024-11-24 02:05:12,720 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:12" (1/1) ... [2024-11-24 02:05:12,744 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-24 02:05:12,744 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:12" (1/1) ... [2024-11-24 02:05:12,744 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:12" (1/1) ... [2024-11-24 02:05:12,756 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:12" (1/1) ... [2024-11-24 02:05:12,757 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:12" (1/1) ... [2024-11-24 02:05:12,766 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:12" (1/1) ... [2024-11-24 02:05:12,773 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:12" (1/1) ... [2024-11-24 02:05:12,779 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:12" (1/1) ... [2024-11-24 02:05:12,785 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 02:05:12,786 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 02:05:12,787 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 02:05:12,787 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 02:05:12,788 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:12" (1/1) ... [2024-11-24 02:05:12,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 02:05:12,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407c1f1b-7f7a-4346-93ae-6f2e9b41fca8/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:05:12,844 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407c1f1b-7f7a-4346-93ae-6f2e9b41fca8/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 02:05:12,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407c1f1b-7f7a-4346-93ae-6f2e9b41fca8/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 02:05:12,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 02:05:12,878 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 02:05:12,878 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 02:05:12,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 02:05:12,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 02:05:12,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 02:05:13,023 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 02:05:13,026 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 02:05:14,030 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2024-11-24 02:05:14,030 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 02:05:14,046 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 02:05:14,047 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-24 02:05:14,050 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 02:05:14 BoogieIcfgContainer [2024-11-24 02:05:14,050 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 02:05:14,053 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 02:05:14,053 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 02:05:14,063 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 02:05:14,064 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 02:05:11" (1/3) ... [2024-11-24 02:05:14,066 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ba78409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 02:05:14, skipping insertion in model container [2024-11-24 02:05:14,066 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:12" (2/3) ... [2024-11-24 02:05:14,067 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ba78409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 02:05:14, skipping insertion in model container [2024-11-24 02:05:14,067 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 02:05:14" (3/3) ... [2024-11-24 02:05:14,069 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-52.i [2024-11-24 02:05:14,094 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 02:05:14,096 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-52.i that has 2 procedures, 135 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 02:05:14,190 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 02:05:14,207 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;@5bb6486d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 02:05:14,208 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 02:05:14,214 INFO L276 IsEmpty]: Start isEmpty. Operand has 135 states, 86 states have (on average 1.4651162790697674) internal successors, (126), 87 states have internal predecessors, (126), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-24 02:05:14,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2024-11-24 02:05:14,247 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:05:14,250 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:05:14,250 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:05:14,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:05:14,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1123143720, now seen corresponding path program 1 times [2024-11-24 02:05:14,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:05:14,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709591236] [2024-11-24 02:05:14,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:05:14,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:05:14,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:05:14,918 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 4050 trivial. 0 not checked. [2024-11-24 02:05:14,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:05:14,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709591236] [2024-11-24 02:05:14,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709591236] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:05:14,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633020869] [2024-11-24 02:05:14,920 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:05:14,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:05:14,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407c1f1b-7f7a-4346-93ae-6f2e9b41fca8/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:05:14,923 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407c1f1b-7f7a-4346-93ae-6f2e9b41fca8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:05:14,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407c1f1b-7f7a-4346-93ae-6f2e9b41fca8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 02:05:15,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:05:15,286 INFO L256 TraceCheckSpWp]: Trace formula consists of 644 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-24 02:05:15,299 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:05:15,368 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 4050 trivial. 0 not checked. [2024-11-24 02:05:15,372 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 02:05:15,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633020869] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:05:15,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 02:05:15,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-24 02:05:15,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536044423] [2024-11-24 02:05:15,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:05:15,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 02:05:15,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:05:15,413 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 02:05:15,414 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 02:05:15,418 INFO L87 Difference]: Start difference. First operand has 135 states, 86 states have (on average 1.4651162790697674) internal successors, (126), 87 states have internal predecessors, (126), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Second operand has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 2 states have call successors, (46) [2024-11-24 02:05:15,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:05:15,502 INFO L93 Difference]: Finished difference Result 259 states and 469 transitions. [2024-11-24 02:05:15,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 02:05:15,506 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 2 states have call successors, (46) Word has length 286 [2024-11-24 02:05:15,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:05:15,519 INFO L225 Difference]: With dead ends: 259 [2024-11-24 02:05:15,519 INFO L226 Difference]: Without dead ends: 127 [2024-11-24 02:05:15,526 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 02:05:15,532 INFO L435 NwaCegarLoop]: 202 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, 202 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 02:05:15,534 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 02:05:15,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-24 02:05:15,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2024-11-24 02:05:15,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 79 states have (on average 1.3924050632911393) internal successors, (110), 79 states have internal predecessors, (110), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-24 02:05:15,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 202 transitions. [2024-11-24 02:05:15,642 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 202 transitions. Word has length 286 [2024-11-24 02:05:15,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:05:15,643 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 202 transitions. [2024-11-24 02:05:15,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 2 states have call successors, (46) [2024-11-24 02:05:15,646 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 202 transitions. [2024-11-24 02:05:15,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2024-11-24 02:05:15,657 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:05:15,657 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:05:15,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407c1f1b-7f7a-4346-93ae-6f2e9b41fca8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-24 02:05:15,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407c1f1b-7f7a-4346-93ae-6f2e9b41fca8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-24 02:05:15,860 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:05:15,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:05:15,861 INFO L85 PathProgramCache]: Analyzing trace with hash -362434516, now seen corresponding path program 1 times [2024-11-24 02:05:15,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:05:15,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531699843] [2024-11-24 02:05:15,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:05:15,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:05:16,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:05:16,866 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-11-24 02:05:16,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:05:16,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531699843] [2024-11-24 02:05:16,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531699843] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:05:16,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:05:16,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 02:05:16,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298449481] [2024-11-24 02:05:16,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:05:16,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 02:05:16,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:05:16,873 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 02:05:16,873 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:05:16,874 INFO L87 Difference]: Start difference. First operand 127 states and 202 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) [2024-11-24 02:05:17,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:05:17,043 INFO L93 Difference]: Finished difference Result 326 states and 520 transitions. [2024-11-24 02:05:17,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 02:05:17,045 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) Word has length 286 [2024-11-24 02:05:17,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:05:17,053 INFO L225 Difference]: With dead ends: 326 [2024-11-24 02:05:17,057 INFO L226 Difference]: Without dead ends: 202 [2024-11-24 02:05:17,058 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 [2024-11-24 02:05:17,060 INFO L435 NwaCegarLoop]: 247 mSDtfsCounter, 116 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 02:05:17,061 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 437 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 02:05:17,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-11-24 02:05:17,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 199. [2024-11-24 02:05:17,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 132 states have (on average 1.4393939393939394) internal successors, (190), 133 states have internal predecessors, (190), 64 states have call successors, (64), 2 states have call predecessors, (64), 2 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2024-11-24 02:05:17,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 318 transitions. [2024-11-24 02:05:17,127 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 318 transitions. Word has length 286 [2024-11-24 02:05:17,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:05:17,131 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 318 transitions. [2024-11-24 02:05:17,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) [2024-11-24 02:05:17,132 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 318 transitions. [2024-11-24 02:05:17,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2024-11-24 02:05:17,143 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:05:17,143 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:05:17,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 02:05:17,144 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:05:17,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:05:17,146 INFO L85 PathProgramCache]: Analyzing trace with hash 443168504, now seen corresponding path program 1 times [2024-11-24 02:05:17,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:05:17,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449037280] [2024-11-24 02:05:17,147 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:05:17,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:05:17,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:05:36,605 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-11-24 02:05:36,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:05:36,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449037280] [2024-11-24 02:05:36,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449037280] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:05:36,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:05:36,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-24 02:05:36,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927807486] [2024-11-24 02:05:36,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:05:36,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-24 02:05:36,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:05:36,609 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-24 02:05:36,609 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-24 02:05:36,610 INFO L87 Difference]: Start difference. First operand 199 states and 318 transitions. Second operand has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) [2024-11-24 02:05:38,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:05:38,924 INFO L93 Difference]: Finished difference Result 718 states and 1126 transitions. [2024-11-24 02:05:38,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 02:05:38,925 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) Word has length 287 [2024-11-24 02:05:38,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:05:38,932 INFO L225 Difference]: With dead ends: 718 [2024-11-24 02:05:38,932 INFO L226 Difference]: Without dead ends: 522 [2024-11-24 02:05:38,934 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2024-11-24 02:05:38,934 INFO L435 NwaCegarLoop]: 181 mSDtfsCounter, 347 mSDsluCounter, 1312 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 1493 SdHoareTripleChecker+Invalid, 917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-24 02:05:38,935 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 1493 Invalid, 917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 743 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-24 02:05:38,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2024-11-24 02:05:39,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 449. [2024-11-24 02:05:39,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 302 states have (on average 1.4105960264900663) internal successors, (426), 306 states have internal predecessors, (426), 140 states have call successors, (140), 6 states have call predecessors, (140), 6 states have return successors, (140), 136 states have call predecessors, (140), 140 states have call successors, (140) [2024-11-24 02:05:39,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 706 transitions. [2024-11-24 02:05:39,017 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 706 transitions. Word has length 287 [2024-11-24 02:05:39,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:05:39,018 INFO L471 AbstractCegarLoop]: Abstraction has 449 states and 706 transitions. [2024-11-24 02:05:39,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) [2024-11-24 02:05:39,018 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 706 transitions. [2024-11-24 02:05:39,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2024-11-24 02:05:39,022 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:05:39,023 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:05:39,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 02:05:39,023 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:05:39,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:05:39,024 INFO L85 PathProgramCache]: Analyzing trace with hash 701333942, now seen corresponding path program 1 times [2024-11-24 02:05:39,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:05:39,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163357197] [2024-11-24 02:05:39,024 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:05:39,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:05:39,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:05:39,817 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-11-24 02:05:39,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:05:39,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163357197] [2024-11-24 02:05:39,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163357197] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:05:39,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:05:39,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 02:05:39,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396829608] [2024-11-24 02:05:39,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:05:39,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 02:05:39,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:05:39,820 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 02:05:39,820 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-24 02:05:39,820 INFO L87 Difference]: Start difference. First operand 449 states and 706 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) [2024-11-24 02:05:40,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:05:40,024 INFO L93 Difference]: Finished difference Result 1023 states and 1576 transitions. [2024-11-24 02:05:40,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 02:05:40,029 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) Word has length 287 [2024-11-24 02:05:40,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:05:40,035 INFO L225 Difference]: With dead ends: 1023 [2024-11-24 02:05:40,035 INFO L226 Difference]: Without dead ends: 577 [2024-11-24 02:05:40,037 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-24 02:05:40,038 INFO L435 NwaCegarLoop]: 199 mSDtfsCounter, 96 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 02:05:40,038 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 407 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 02:05:40,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2024-11-24 02:05:40,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 441. [2024-11-24 02:05:40,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 304 states have (on average 1.4013157894736843) internal successors, (426), 306 states have internal predecessors, (426), 128 states have call successors, (128), 8 states have call predecessors, (128), 8 states have return successors, (128), 126 states have call predecessors, (128), 128 states have call successors, (128) [2024-11-24 02:05:40,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 682 transitions. [2024-11-24 02:05:40,154 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 682 transitions. Word has length 287 [2024-11-24 02:05:40,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:05:40,156 INFO L471 AbstractCegarLoop]: Abstraction has 441 states and 682 transitions. [2024-11-24 02:05:40,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) [2024-11-24 02:05:40,157 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 682 transitions. [2024-11-24 02:05:40,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2024-11-24 02:05:40,161 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:05:40,161 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:05:40,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 02:05:40,162 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:05:40,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:05:40,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1757730808, now seen corresponding path program 1 times [2024-11-24 02:05:40,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:05:40,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615275732] [2024-11-24 02:05:40,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:05:40,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:05:40,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:05:52,295 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-11-24 02:05:52,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:05:52,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615275732] [2024-11-24 02:05:52,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615275732] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:05:52,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:05:52,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-24 02:05:52,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919516926] [2024-11-24 02:05:52,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:05:52,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-24 02:05:52,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:05:52,298 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-24 02:05:52,298 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-11-24 02:05:52,298 INFO L87 Difference]: Start difference. First operand 441 states and 682 transitions. Second operand has 16 states, 16 states have (on average 3.75) internal successors, (60), 16 states have internal predecessors, (60), 2 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2024-11-24 02:05:59,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:05:59,039 INFO L93 Difference]: Finished difference Result 578 states and 863 transitions. [2024-11-24 02:05:59,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-24 02:05:59,040 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.75) internal successors, (60), 16 states have internal predecessors, (60), 2 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) Word has length 287 [2024-11-24 02:05:59,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:05:59,045 INFO L225 Difference]: With dead ends: 578 [2024-11-24 02:05:59,048 INFO L226 Difference]: Without dead ends: 576 [2024-11-24 02:05:59,049 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=419, Invalid=1063, Unknown=0, NotChecked=0, Total=1482 [2024-11-24 02:05:59,050 INFO L435 NwaCegarLoop]: 176 mSDtfsCounter, 361 mSDsluCounter, 1409 mSDsCounter, 0 mSdLazyCounter, 1017 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 1585 SdHoareTripleChecker+Invalid, 1215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 1017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-24 02:05:59,050 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 1585 Invalid, 1215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 1017 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-24 02:05:59,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2024-11-24 02:05:59,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 449. [2024-11-24 02:05:59,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 312 states have (on average 1.391025641025641) internal successors, (434), 314 states have internal predecessors, (434), 128 states have call successors, (128), 8 states have call predecessors, (128), 8 states have return successors, (128), 126 states have call predecessors, (128), 128 states have call successors, (128) [2024-11-24 02:05:59,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 690 transitions. [2024-11-24 02:05:59,137 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 690 transitions. Word has length 287 [2024-11-24 02:05:59,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:05:59,138 INFO L471 AbstractCegarLoop]: Abstraction has 449 states and 690 transitions. [2024-11-24 02:05:59,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.75) internal successors, (60), 16 states have internal predecessors, (60), 2 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2024-11-24 02:05:59,138 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 690 transitions. [2024-11-24 02:05:59,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2024-11-24 02:05:59,144 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:05:59,145 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:05:59,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 02:05:59,145 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:05:59,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:05:59,147 INFO L85 PathProgramCache]: Analyzing trace with hash -836695174, now seen corresponding path program 1 times [2024-11-24 02:05:59,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:05:59,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392636137] [2024-11-24 02:05:59,149 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:05:59,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:05:59,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:05:59,409 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-11-24 02:05:59,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:05:59,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392636137] [2024-11-24 02:05:59,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392636137] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:05:59,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:05:59,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 02:05:59,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127461104] [2024-11-24 02:05:59,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:05:59,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 02:05:59,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:05:59,417 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 02:05:59,417 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 02:05:59,417 INFO L87 Difference]: Start difference. First operand 449 states and 690 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) [2024-11-24 02:05:59,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:05:59,742 INFO L93 Difference]: Finished difference Result 669 states and 1031 transitions. [2024-11-24 02:05:59,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 02:05:59,743 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) Word has length 287 [2024-11-24 02:05:59,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:05:59,750 INFO L225 Difference]: With dead ends: 669 [2024-11-24 02:05:59,750 INFO L226 Difference]: Without dead ends: 449 [2024-11-24 02:05:59,751 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-24 02:05:59,752 INFO L435 NwaCegarLoop]: 193 mSDtfsCounter, 175 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 02:05:59,752 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 291 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 02:05:59,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2024-11-24 02:05:59,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 449. [2024-11-24 02:05:59,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 312 states have (on average 1.3782051282051282) internal successors, (430), 314 states have internal predecessors, (430), 128 states have call successors, (128), 8 states have call predecessors, (128), 8 states have return successors, (128), 126 states have call predecessors, (128), 128 states have call successors, (128) [2024-11-24 02:05:59,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 686 transitions. [2024-11-24 02:05:59,812 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 686 transitions. Word has length 287 [2024-11-24 02:05:59,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:05:59,813 INFO L471 AbstractCegarLoop]: Abstraction has 449 states and 686 transitions. [2024-11-24 02:05:59,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) [2024-11-24 02:05:59,813 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 686 transitions. [2024-11-24 02:05:59,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2024-11-24 02:05:59,817 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:05:59,818 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:05:59,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 02:05:59,818 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:05:59,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:05:59,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1925097222, now seen corresponding path program 1 times [2024-11-24 02:05:59,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:05:59,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068045462] [2024-11-24 02:05:59,820 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:05:59,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:05:59,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:06:03,775 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-11-24 02:06:03,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:06:03,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068045462] [2024-11-24 02:06:03,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068045462] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:06:03,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:06:03,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-24 02:06:03,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533074185] [2024-11-24 02:06:03,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:06:03,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 02:06:03,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:06:03,778 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 02:06:03,778 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-24 02:06:03,778 INFO L87 Difference]: Start difference. First operand 449 states and 686 transitions. Second operand has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 4 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 3 states have call predecessors, (46), 4 states have call successors, (46) [2024-11-24 02:06:05,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:06:05,013 INFO L93 Difference]: Finished difference Result 1109 states and 1692 transitions. [2024-11-24 02:06:05,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 02:06:05,014 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 4 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 3 states have call predecessors, (46), 4 states have call successors, (46) Word has length 288 [2024-11-24 02:06:05,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:06:05,020 INFO L225 Difference]: With dead ends: 1109 [2024-11-24 02:06:05,020 INFO L226 Difference]: Without dead ends: 663 [2024-11-24 02:06:05,022 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2024-11-24 02:06:05,024 INFO L435 NwaCegarLoop]: 186 mSDtfsCounter, 372 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 1086 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-24 02:06:05,024 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 1086 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-24 02:06:05,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2024-11-24 02:06:05,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 583. [2024-11-24 02:06:05,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 398 states have (on average 1.3869346733668342) internal successors, (552), 400 states have internal predecessors, (552), 174 states have call successors, (174), 10 states have call predecessors, (174), 10 states have return successors, (174), 172 states have call predecessors, (174), 174 states have call successors, (174) [2024-11-24 02:06:05,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 900 transitions. [2024-11-24 02:06:05,129 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 900 transitions. Word has length 288 [2024-11-24 02:06:05,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:06:05,130 INFO L471 AbstractCegarLoop]: Abstraction has 583 states and 900 transitions. [2024-11-24 02:06:05,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 4 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 3 states have call predecessors, (46), 4 states have call successors, (46) [2024-11-24 02:06:05,130 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 900 transitions. [2024-11-24 02:06:05,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2024-11-24 02:06:05,139 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:06:05,139 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:06:05,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 02:06:05,140 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:06:05,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:06:05,141 INFO L85 PathProgramCache]: Analyzing trace with hash 313661700, now seen corresponding path program 1 times [2024-11-24 02:06:05,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:06:05,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983051982] [2024-11-24 02:06:05,141 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:06:05,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:06:05,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:06:14,004 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-11-24 02:06:14,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:06:14,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983051982] [2024-11-24 02:06:14,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983051982] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:06:14,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:06:14,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-24 02:06:14,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89613690] [2024-11-24 02:06:14,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:06:14,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-24 02:06:14,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:06:14,007 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-24 02:06:14,007 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-11-24 02:06:14,007 INFO L87 Difference]: Start difference. First operand 583 states and 900 transitions. Second operand has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) [2024-11-24 02:06:18,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:06:18,061 INFO L93 Difference]: Finished difference Result 1127 states and 1709 transitions. [2024-11-24 02:06:18,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-24 02:06:18,062 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) Word has length 288 [2024-11-24 02:06:18,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:06:18,067 INFO L225 Difference]: With dead ends: 1127 [2024-11-24 02:06:18,067 INFO L226 Difference]: Without dead ends: 681 [2024-11-24 02:06:18,070 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=407, Invalid=1315, Unknown=0, NotChecked=0, Total=1722 [2024-11-24 02:06:18,070 INFO L435 NwaCegarLoop]: 179 mSDtfsCounter, 375 mSDsluCounter, 1140 mSDsCounter, 0 mSdLazyCounter, 913 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 1319 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-24 02:06:18,071 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 1319 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 913 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-24 02:06:18,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2024-11-24 02:06:18,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 617. [2024-11-24 02:06:18,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 432 states have (on average 1.3796296296296295) internal successors, (596), 434 states have internal predecessors, (596), 174 states have call successors, (174), 10 states have call predecessors, (174), 10 states have return successors, (174), 172 states have call predecessors, (174), 174 states have call successors, (174) [2024-11-24 02:06:18,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 944 transitions. [2024-11-24 02:06:18,151 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 944 transitions. Word has length 288 [2024-11-24 02:06:18,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:06:18,152 INFO L471 AbstractCegarLoop]: Abstraction has 617 states and 944 transitions. [2024-11-24 02:06:18,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) [2024-11-24 02:06:18,152 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 944 transitions. [2024-11-24 02:06:18,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2024-11-24 02:06:18,157 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:06:18,157 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:06:18,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 02:06:18,158 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:06:18,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:06:18,160 INFO L85 PathProgramCache]: Analyzing trace with hash 2110777594, now seen corresponding path program 1 times [2024-11-24 02:06:18,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:06:18,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392882347] [2024-11-24 02:06:18,161 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:06:18,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:06:18,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:06:27,052 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-11-24 02:06:27,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:06:27,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392882347] [2024-11-24 02:06:27,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392882347] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:06:27,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:06:27,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-24 02:06:27,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232745111] [2024-11-24 02:06:27,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:06:27,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-24 02:06:27,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:06:27,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-24 02:06:27,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2024-11-24 02:06:27,056 INFO L87 Difference]: Start difference. First operand 617 states and 944 transitions. Second operand has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 4 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 3 states have call predecessors, (46), 4 states have call successors, (46) [2024-11-24 02:06:31,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:06:31,813 INFO L93 Difference]: Finished difference Result 987 states and 1481 transitions. [2024-11-24 02:06:31,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-24 02:06:31,813 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 4 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 3 states have call predecessors, (46), 4 states have call successors, (46) Word has length 288 [2024-11-24 02:06:31,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:06:31,821 INFO L225 Difference]: With dead ends: 987 [2024-11-24 02:06:31,821 INFO L226 Difference]: Without dead ends: 747 [2024-11-24 02:06:31,823 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=287, Invalid=903, Unknown=0, NotChecked=0, Total=1190 [2024-11-24 02:06:31,824 INFO L435 NwaCegarLoop]: 182 mSDtfsCounter, 290 mSDsluCounter, 1374 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 1556 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-24 02:06:31,824 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 1556 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-24 02:06:31,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2024-11-24 02:06:31,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 633. [2024-11-24 02:06:31,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 448 states have (on average 1.3839285714285714) internal successors, (620), 450 states have internal predecessors, (620), 174 states have call successors, (174), 10 states have call predecessors, (174), 10 states have return successors, (174), 172 states have call predecessors, (174), 174 states have call successors, (174) [2024-11-24 02:06:31,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 968 transitions. [2024-11-24 02:06:31,905 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 968 transitions. Word has length 288 [2024-11-24 02:06:31,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:06:31,906 INFO L471 AbstractCegarLoop]: Abstraction has 633 states and 968 transitions. [2024-11-24 02:06:31,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 4 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 3 states have call predecessors, (46), 4 states have call successors, (46) [2024-11-24 02:06:31,906 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 968 transitions. [2024-11-24 02:06:31,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 573 [2024-11-24 02:06:31,913 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:06:31,914 INFO L218 NwaCegarLoop]: trace histogram [92, 92, 92, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:06:31,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 02:06:31,914 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:06:31,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:06:31,915 INFO L85 PathProgramCache]: Analyzing trace with hash 204367374, now seen corresponding path program 1 times [2024-11-24 02:06:31,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:06:31,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204334897] [2024-11-24 02:06:31,915 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:06:31,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:06:32,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:06:36,698 INFO L134 CoverageAnalysis]: Checked inductivity of 16842 backedges. 94 proven. 4 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2024-11-24 02:06:36,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:06:36,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204334897] [2024-11-24 02:06:36,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204334897] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:06:36,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627650126] [2024-11-24 02:06:36,698 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:06:36,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:06:36,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407c1f1b-7f7a-4346-93ae-6f2e9b41fca8/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:06:36,701 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407c1f1b-7f7a-4346-93ae-6f2e9b41fca8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:06:36,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407c1f1b-7f7a-4346-93ae-6f2e9b41fca8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 02:06:37,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:06:37,015 INFO L256 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 02:06:37,055 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:06:37,206 INFO L134 CoverageAnalysis]: Checked inductivity of 16842 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 16831 trivial. 0 not checked. [2024-11-24 02:06:37,206 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 02:06:37,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627650126] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:06:37,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 02:06:37,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-24 02:06:37,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864871771] [2024-11-24 02:06:37,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:06:37,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 02:06:37,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:06:37,208 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 02:06:37,209 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-24 02:06:37,211 INFO L87 Difference]: Start difference. First operand 633 states and 968 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) [2024-11-24 02:06:37,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:06:37,309 INFO L93 Difference]: Finished difference Result 1077 states and 1647 transitions. [2024-11-24 02:06:37,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 02:06:37,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) Word has length 572 [2024-11-24 02:06:37,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:06:37,319 INFO L225 Difference]: With dead ends: 1077 [2024-11-24 02:06:37,319 INFO L226 Difference]: Without dead ends: 597 [2024-11-24 02:06:37,325 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 582 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-24 02:06:37,326 INFO L435 NwaCegarLoop]: 197 mSDtfsCounter, 0 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 02:06:37,326 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 389 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 02:06:37,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2024-11-24 02:06:37,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 597. [2024-11-24 02:06:37,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 412 states have (on average 1.3786407766990292) internal successors, (568), 414 states have internal predecessors, (568), 174 states have call successors, (174), 10 states have call predecessors, (174), 10 states have return successors, (174), 172 states have call predecessors, (174), 174 states have call successors, (174) [2024-11-24 02:06:37,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 916 transitions. [2024-11-24 02:06:37,468 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 916 transitions. Word has length 572 [2024-11-24 02:06:37,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:06:37,469 INFO L471 AbstractCegarLoop]: Abstraction has 597 states and 916 transitions. [2024-11-24 02:06:37,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 1 states have call predecessors, (46), 1 states have call successors, (46) [2024-11-24 02:06:37,469 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 916 transitions. [2024-11-24 02:06:37,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 573 [2024-11-24 02:06:37,481 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:06:37,481 INFO L218 NwaCegarLoop]: trace histogram [92, 92, 92, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:06:37,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407c1f1b-7f7a-4346-93ae-6f2e9b41fca8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-24 02:06:37,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407c1f1b-7f7a-4346-93ae-6f2e9b41fca8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:06:37,682 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:06:37,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:06:37,683 INFO L85 PathProgramCache]: Analyzing trace with hash 390047746, now seen corresponding path program 1 times [2024-11-24 02:06:37,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:06:37,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86220485] [2024-11-24 02:06:37,683 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:06:37,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:06:37,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:06:47,416 INFO L134 CoverageAnalysis]: Checked inductivity of 16843 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2024-11-24 02:06:47,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:06:47,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86220485] [2024-11-24 02:06:47,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86220485] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:06:47,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654889139] [2024-11-24 02:06:47,417 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:06:47,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:06:47,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407c1f1b-7f7a-4346-93ae-6f2e9b41fca8/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:06:47,419 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407c1f1b-7f7a-4346-93ae-6f2e9b41fca8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:06:47,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_407c1f1b-7f7a-4346-93ae-6f2e9b41fca8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 02:06:47,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:06:47,762 INFO L256 TraceCheckSpWp]: Trace formula consists of 1173 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-24 02:06:47,785 INFO L279 TraceCheckSpWp]: Computing forward predicates...