./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-14.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_0ed8e84f-e62a-4136-94b4-99d4811e91f7/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed8e84f-e62a-4136-94b4-99d4811e91f7/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_0ed8e84f-e62a-4136-94b4-99d4811e91f7/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed8e84f-e62a-4136-94b4-99d4811e91f7/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-14.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed8e84f-e62a-4136-94b4-99d4811e91f7/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_0ed8e84f-e62a-4136-94b4-99d4811e91f7/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 d03dd1fa0ccd6c2f276f8e830c5c45c3023586b3294c63b9f2b76eedbdce4e31 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:33:00,952 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:33:01,045 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed8e84f-e62a-4136-94b4-99d4811e91f7/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 23:33:01,054 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:33:01,054 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:33:01,101 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:33:01,101 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:33:01,102 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:33:01,102 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:33:01,102 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:33:01,102 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:33:01,103 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:33:01,103 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:33:01,103 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:33:01,103 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:33:01,103 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:33:01,103 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:33:01,104 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 23:33:01,104 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:33:01,104 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 23:33:01,104 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:33:01,104 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:33:01,104 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:33:01,104 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:33:01,104 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 23:33:01,104 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:33:01,105 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:33:01,105 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:33:01,105 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:33:01,105 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:33:01,105 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:33:01,105 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:33:01,105 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:33:01,105 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:33:01,105 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:33:01,106 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:33:01,106 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:33:01,106 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:33:01,106 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:33:01,106 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:33:01,106 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:33:01,106 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:33:01,106 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:33:01,106 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:33:01,106 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:33:01,106 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:33:01,107 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:33:01,107 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:33:01,107 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_0ed8e84f-e62a-4136-94b4-99d4811e91f7/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 -> d03dd1fa0ccd6c2f276f8e830c5c45c3023586b3294c63b9f2b76eedbdce4e31 [2024-11-23 23:33:01,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:33:01,475 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:33:01,477 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:33:01,484 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:33:01,484 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:33:01,489 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed8e84f-e62a-4136-94b4-99d4811e91f7/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-14.i [2024-11-23 23:33:04,628 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed8e84f-e62a-4136-94b4-99d4811e91f7/bin/uautomizer-verify-LYvppIcaGC/data/ce4cf074b/86b989a5cc094bc7b25f2a9377284ad4/FLAGb2ae3875b [2024-11-23 23:33:04,986 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:33:04,986 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed8e84f-e62a-4136-94b4-99d4811e91f7/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-14.i [2024-11-23 23:33:05,002 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed8e84f-e62a-4136-94b4-99d4811e91f7/bin/uautomizer-verify-LYvppIcaGC/data/ce4cf074b/86b989a5cc094bc7b25f2a9377284ad4/FLAGb2ae3875b [2024-11-23 23:33:05,024 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed8e84f-e62a-4136-94b4-99d4811e91f7/bin/uautomizer-verify-LYvppIcaGC/data/ce4cf074b/86b989a5cc094bc7b25f2a9377284ad4 [2024-11-23 23:33:05,027 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:33:05,028 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:33:05,030 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:33:05,030 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:33:05,035 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:33:05,035 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:33:05" (1/1) ... [2024-11-23 23:33:05,038 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f4df9af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:33:05, skipping insertion in model container [2024-11-23 23:33:05,038 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:33:05" (1/1) ... [2024-11-23 23:33:05,081 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:33:05,240 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_0ed8e84f-e62a-4136-94b4-99d4811e91f7/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-14.i[916,929] [2024-11-23 23:33:05,380 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:33:05,402 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:33:05,423 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_0ed8e84f-e62a-4136-94b4-99d4811e91f7/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-14.i[916,929] [2024-11-23 23:33:05,524 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:33:05,544 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:33:05,545 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:33:05 WrapperNode [2024-11-23 23:33:05,545 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:33:05,546 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:33:05,546 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:33:05,546 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:33:05,553 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:33:05" (1/1) ... [2024-11-23 23:33:05,575 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:33:05" (1/1) ... [2024-11-23 23:33:05,670 INFO L138 Inliner]: procedures = 26, calls = 111, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 577 [2024-11-23 23:33:05,670 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:33:05,671 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:33:05,671 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:33:05,672 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:33:05,682 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:33:05" (1/1) ... [2024-11-23 23:33:05,682 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:33:05" (1/1) ... [2024-11-23 23:33:05,697 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:33:05" (1/1) ... [2024-11-23 23:33:05,766 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-23 23:33:05,766 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:33:05" (1/1) ... [2024-11-23 23:33:05,766 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:33:05" (1/1) ... [2024-11-23 23:33:05,796 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:33:05" (1/1) ... [2024-11-23 23:33:05,802 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:33:05" (1/1) ... [2024-11-23 23:33:05,812 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:33:05" (1/1) ... [2024-11-23 23:33:05,819 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:33:05" (1/1) ... [2024-11-23 23:33:05,827 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:33:05" (1/1) ... [2024-11-23 23:33:05,846 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:33:05,849 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:33:05,849 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:33:05,849 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:33:05,851 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:33:05" (1/1) ... [2024-11-23 23:33:05,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:33:05,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed8e84f-e62a-4136-94b4-99d4811e91f7/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:33:05,891 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed8e84f-e62a-4136-94b4-99d4811e91f7/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:33:05,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed8e84f-e62a-4136-94b4-99d4811e91f7/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:33:05,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:33:05,924 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-23 23:33:05,924 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-23 23:33:05,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:33:05,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:33:05,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:33:06,092 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:33:06,094 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:33:07,518 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2024-11-23 23:33:07,518 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:33:07,537 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:33:07,538 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 23:33:07,539 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:33:07 BoogieIcfgContainer [2024-11-23 23:33:07,539 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:33:07,541 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:33:07,543 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:33:07,548 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:33:07,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:33:05" (1/3) ... [2024-11-23 23:33:07,549 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2209a76b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:33:07, skipping insertion in model container [2024-11-23 23:33:07,550 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:33:05" (2/3) ... [2024-11-23 23:33:07,551 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2209a76b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:33:07, skipping insertion in model container [2024-11-23 23:33:07,551 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:33:07" (3/3) ... [2024-11-23 23:33:07,552 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-14.i [2024-11-23 23:33:07,569 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:33:07,572 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-14.i that has 2 procedures, 251 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 23:33:07,639 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:33:07,658 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;@155586e1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:33:07,658 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 23:33:07,663 INFO L276 IsEmpty]: Start isEmpty. Operand has 251 states, 150 states have (on average 1.52) internal successors, (228), 151 states have internal predecessors, (228), 98 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) [2024-11-23 23:33:07,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2024-11-23 23:33:07,728 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:33:07,729 INFO L218 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:33:07,730 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:33:07,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:33:07,740 INFO L85 PathProgramCache]: Analyzing trace with hash -856857451, now seen corresponding path program 1 times [2024-11-23 23:33:07,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:33:07,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556885177] [2024-11-23 23:33:07,750 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:33:07,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:33:08,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:33:08,822 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2024-11-23 23:33:08,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:33:08,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556885177] [2024-11-23 23:33:08,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556885177] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:33:08,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:33:08,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:33:08,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213899446] [2024-11-23 23:33:08,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:33:08,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 23:33:08,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:33:08,868 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 23:33:08,868 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:33:08,873 INFO L87 Difference]: Start difference. First operand has 251 states, 150 states have (on average 1.52) internal successors, (228), 151 states have internal predecessors, (228), 98 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) Second operand has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2024-11-23 23:33:08,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:33:08,979 INFO L93 Difference]: Finished difference Result 494 states and 938 transitions. [2024-11-23 23:33:08,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 23:33:08,981 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 590 [2024-11-23 23:33:08,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:33:09,003 INFO L225 Difference]: With dead ends: 494 [2024-11-23 23:33:09,004 INFO L226 Difference]: Without dead ends: 246 [2024-11-23 23:33:09,015 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:33:09,020 INFO L435 NwaCegarLoop]: 411 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, 411 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:33:09,022 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:33:09,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2024-11-23 23:33:09,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2024-11-23 23:33:09,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 146 states have (on average 1.4726027397260273) internal successors, (215), 146 states have internal predecessors, (215), 98 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) [2024-11-23 23:33:09,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 411 transitions. [2024-11-23 23:33:09,152 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 411 transitions. Word has length 590 [2024-11-23 23:33:09,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:33:09,158 INFO L471 AbstractCegarLoop]: Abstraction has 246 states and 411 transitions. [2024-11-23 23:33:09,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2024-11-23 23:33:09,159 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 411 transitions. [2024-11-23 23:33:09,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 592 [2024-11-23 23:33:09,183 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:33:09,183 INFO L218 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:33:09,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 23:33:09,184 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:33:09,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:33:09,186 INFO L85 PathProgramCache]: Analyzing trace with hash 627183643, now seen corresponding path program 1 times [2024-11-23 23:33:09,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:33:09,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021787256] [2024-11-23 23:33:09,187 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:33:09,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:33:09,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:33:10,081 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2024-11-23 23:33:10,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:33:10,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021787256] [2024-11-23 23:33:10,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021787256] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:33:10,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:33:10,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:33:10,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008319716] [2024-11-23 23:33:10,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:33:10,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:33:10,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:33:10,087 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:33:10,087 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:33:10,088 INFO L87 Difference]: Start difference. First operand 246 states and 411 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2024-11-23 23:33:10,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:33:10,250 INFO L93 Difference]: Finished difference Result 639 states and 1071 transitions. [2024-11-23 23:33:10,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:33:10,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 591 [2024-11-23 23:33:10,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:33:10,262 INFO L225 Difference]: With dead ends: 639 [2024-11-23 23:33:10,262 INFO L226 Difference]: Without dead ends: 396 [2024-11-23 23:33:10,266 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:33:10,267 INFO L435 NwaCegarLoop]: 528 mSDtfsCounter, 247 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:33:10,268 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 926 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:33:10,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2024-11-23 23:33:10,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 393. [2024-11-23 23:33:10,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 245 states have (on average 1.506122448979592) internal successors, (369), 246 states have internal predecessors, (369), 145 states have call successors, (145), 2 states have call predecessors, (145), 2 states have return successors, (145), 144 states have call predecessors, (145), 145 states have call successors, (145) [2024-11-23 23:33:10,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 659 transitions. [2024-11-23 23:33:10,373 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 659 transitions. Word has length 591 [2024-11-23 23:33:10,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:33:10,378 INFO L471 AbstractCegarLoop]: Abstraction has 393 states and 659 transitions. [2024-11-23 23:33:10,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2024-11-23 23:33:10,379 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 659 transitions. [2024-11-23 23:33:10,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 592 [2024-11-23 23:33:10,393 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:33:10,393 INFO L218 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:33:10,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 23:33:10,393 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:33:10,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:33:10,395 INFO L85 PathProgramCache]: Analyzing trace with hash -402175655, now seen corresponding path program 1 times [2024-11-23 23:33:10,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:33:10,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006177282] [2024-11-23 23:33:10,395 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:33:10,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:33:10,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:33:11,631 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2024-11-23 23:33:11,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:33:11,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006177282] [2024-11-23 23:33:11,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006177282] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:33:11,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:33:11,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:33:11,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525530952] [2024-11-23 23:33:11,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:33:11,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:33:11,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:33:11,635 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:33:11,636 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:33:11,636 INFO L87 Difference]: Start difference. First operand 393 states and 659 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 2 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) [2024-11-23 23:33:12,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:33:12,902 INFO L93 Difference]: Finished difference Result 1563 states and 2627 transitions. [2024-11-23 23:33:12,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:33:12,904 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 2 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) Word has length 591 [2024-11-23 23:33:12,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:33:12,921 INFO L225 Difference]: With dead ends: 1563 [2024-11-23 23:33:12,923 INFO L226 Difference]: Without dead ends: 1173 [2024-11-23 23:33:12,925 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:33:12,929 INFO L435 NwaCegarLoop]: 816 mSDtfsCounter, 571 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 1911 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:33:12,929 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 1911 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-23 23:33:12,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2024-11-23 23:33:13,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 1165. [2024-11-23 23:33:13,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1165 states, 723 states have (on average 1.5062240663900415) internal successors, (1089), 726 states have internal predecessors, (1089), 435 states have call successors, (435), 6 states have call predecessors, (435), 6 states have return successors, (435), 432 states have call predecessors, (435), 435 states have call successors, (435) [2024-11-23 23:33:13,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1959 transitions. [2024-11-23 23:33:13,191 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1959 transitions. Word has length 591 [2024-11-23 23:33:13,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:33:13,192 INFO L471 AbstractCegarLoop]: Abstraction has 1165 states and 1959 transitions. [2024-11-23 23:33:13,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 2 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) [2024-11-23 23:33:13,193 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1959 transitions. [2024-11-23 23:33:13,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2024-11-23 23:33:13,206 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:33:13,207 INFO L218 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:33:13,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 23:33:13,207 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:33:13,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:33:13,208 INFO L85 PathProgramCache]: Analyzing trace with hash 135907780, now seen corresponding path program 1 times [2024-11-23 23:33:13,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:33:13,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482580475] [2024-11-23 23:33:13,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:33:13,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:33:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:33:15,219 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2024-11-23 23:33:15,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:33:15,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482580475] [2024-11-23 23:33:15,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482580475] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:33:15,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:33:15,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:33:15,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932011912] [2024-11-23 23:33:15,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:33:15,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:33:15,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:33:15,222 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:33:15,223 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:33:15,223 INFO L87 Difference]: Start difference. First operand 1165 states and 1959 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) [2024-11-23 23:33:16,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:33:16,994 INFO L93 Difference]: Finished difference Result 2335 states and 3927 transitions. [2024-11-23 23:33:16,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:33:16,995 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) Word has length 592 [2024-11-23 23:33:16,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:33:17,011 INFO L225 Difference]: With dead ends: 2335 [2024-11-23 23:33:17,011 INFO L226 Difference]: Without dead ends: 1945 [2024-11-23 23:33:17,014 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:33:17,015 INFO L435 NwaCegarLoop]: 1086 mSDtfsCounter, 938 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 1775 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:33:17,015 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [938 Valid, 1775 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-23 23:33:17,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1945 states. [2024-11-23 23:33:17,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1945 to 1939. [2024-11-23 23:33:17,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1939 states, 1203 states have (on average 1.5070656691604323) internal successors, (1813), 1208 states have internal predecessors, (1813), 725 states have call successors, (725), 10 states have call predecessors, (725), 10 states have return successors, (725), 720 states have call predecessors, (725), 725 states have call successors, (725) [2024-11-23 23:33:17,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1939 states to 1939 states and 3263 transitions. [2024-11-23 23:33:17,411 INFO L78 Accepts]: Start accepts. Automaton has 1939 states and 3263 transitions. Word has length 592 [2024-11-23 23:33:17,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:33:17,413 INFO L471 AbstractCegarLoop]: Abstraction has 1939 states and 3263 transitions. [2024-11-23 23:33:17,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) [2024-11-23 23:33:17,413 INFO L276 IsEmpty]: Start isEmpty. Operand 1939 states and 3263 transitions. [2024-11-23 23:33:17,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2024-11-23 23:33:17,429 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:33:17,429 INFO L218 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:33:17,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 23:33:17,430 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:33:17,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:33:17,430 INFO L85 PathProgramCache]: Analyzing trace with hash 63521222, now seen corresponding path program 1 times [2024-11-23 23:33:17,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:33:17,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447025492] [2024-11-23 23:33:17,431 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:33:17,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:33:17,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:33:18,453 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 12 proven. 279 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2024-11-23 23:33:18,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:33:18,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447025492] [2024-11-23 23:33:18,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447025492] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:33:18,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719087463] [2024-11-23 23:33:18,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:33:18,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:33:18,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed8e84f-e62a-4136-94b4-99d4811e91f7/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:33:18,460 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed8e84f-e62a-4136-94b4-99d4811e91f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:33:18,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed8e84f-e62a-4136-94b4-99d4811e91f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 23:33:18,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:33:18,868 INFO L256 TraceCheckSpWp]: Trace formula consists of 1286 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 23:33:18,901 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:33:20,760 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 1593 proven. 279 refuted. 0 times theorem prover too weak. 17140 trivial. 0 not checked. [2024-11-23 23:33:20,760 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:33:21,885 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 12 proven. 279 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2024-11-23 23:33:21,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719087463] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:33:21,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:33:21,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-11-23 23:33:21,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460645676] [2024-11-23 23:33:21,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:33:21,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:33:21,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:33:21,891 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:33:21,892 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:33:21,892 INFO L87 Difference]: Start difference. First operand 1939 states and 3263 transitions. Second operand has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 2 states have call successors, (191), 2 states have call predecessors, (191), 4 states have return successors, (192), 2 states have call predecessors, (192), 2 states have call successors, (192) [2024-11-23 23:33:22,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:33:22,823 INFO L93 Difference]: Finished difference Result 3945 states and 6587 transitions. [2024-11-23 23:33:22,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 23:33:22,824 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 2 states have call successors, (191), 2 states have call predecessors, (191), 4 states have return successors, (192), 2 states have call predecessors, (192), 2 states have call successors, (192) Word has length 592 [2024-11-23 23:33:22,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:33:22,841 INFO L225 Difference]: With dead ends: 3945 [2024-11-23 23:33:22,841 INFO L226 Difference]: Without dead ends: 2009 [2024-11-23 23:33:22,848 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1191 GetRequests, 1181 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:33:22,849 INFO L435 NwaCegarLoop]: 317 mSDtfsCounter, 369 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:33:22,850 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 735 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-23 23:33:22,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2009 states. [2024-11-23 23:33:23,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2009 to 1986. [2024-11-23 23:33:23,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1986 states, 1236 states have (on average 1.4854368932038835) internal successors, (1836), 1242 states have internal predecessors, (1836), 729 states have call successors, (729), 20 states have call predecessors, (729), 20 states have return successors, (729), 723 states have call predecessors, (729), 729 states have call successors, (729) [2024-11-23 23:33:23,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1986 states to 1986 states and 3294 transitions. [2024-11-23 23:33:23,164 INFO L78 Accepts]: Start accepts. Automaton has 1986 states and 3294 transitions. Word has length 592 [2024-11-23 23:33:23,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:33:23,165 INFO L471 AbstractCegarLoop]: Abstraction has 1986 states and 3294 transitions. [2024-11-23 23:33:23,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 2 states have call successors, (191), 2 states have call predecessors, (191), 4 states have return successors, (192), 2 states have call predecessors, (192), 2 states have call successors, (192) [2024-11-23 23:33:23,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1986 states and 3294 transitions. [2024-11-23 23:33:23,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2024-11-23 23:33:23,187 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:33:23,189 INFO L218 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:33:23,201 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed8e84f-e62a-4136-94b4-99d4811e91f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 23:33:23,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed8e84f-e62a-4136-94b4-99d4811e91f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:33:23,393 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:33:23,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:33:23,395 INFO L85 PathProgramCache]: Analyzing trace with hash -616537148, now seen corresponding path program 1 times [2024-11-23 23:33:23,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:33:23,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491908517] [2024-11-23 23:33:23,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:33:23,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:33:23,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:33:24,986 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 156 proven. 135 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2024-11-23 23:33:24,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:33:24,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491908517] [2024-11-23 23:33:24,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491908517] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:33:24,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810584308] [2024-11-23 23:33:24,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:33:24,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:33:24,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed8e84f-e62a-4136-94b4-99d4811e91f7/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:33:24,994 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed8e84f-e62a-4136-94b4-99d4811e91f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:33:24,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed8e84f-e62a-4136-94b4-99d4811e91f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 23:33:25,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:33:25,367 INFO L256 TraceCheckSpWp]: Trace formula consists of 1284 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-23 23:33:25,378 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:33:26,290 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 9561 proven. 135 refuted. 0 times theorem prover too weak. 9316 trivial. 0 not checked. [2024-11-23 23:33:26,290 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:33:27,108 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 156 proven. 135 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2024-11-23 23:33:27,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810584308] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:33:27,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:33:27,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-23 23:33:27,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633940503] [2024-11-23 23:33:27,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:33:27,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 23:33:27,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:33:27,113 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 23:33:27,113 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:33:27,114 INFO L87 Difference]: Start difference. First operand 1986 states and 3294 transitions. Second operand has 11 states, 11 states have (on average 12.0) internal successors, (132), 11 states have internal predecessors, (132), 2 states have call successors, (143), 2 states have call predecessors, (143), 4 states have return successors, (144), 2 states have call predecessors, (144), 2 states have call successors, (144) [2024-11-23 23:33:32,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:33:32,186 INFO L93 Difference]: Finished difference Result 5926 states and 9764 transitions. [2024-11-23 23:33:32,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-23 23:33:32,187 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.0) internal successors, (132), 11 states have internal predecessors, (132), 2 states have call successors, (143), 2 states have call predecessors, (143), 4 states have return successors, (144), 2 states have call predecessors, (144), 2 states have call successors, (144) Word has length 592 [2024-11-23 23:33:32,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:33:32,216 INFO L225 Difference]: With dead ends: 5926 [2024-11-23 23:33:32,216 INFO L226 Difference]: Without dead ends: 3950 [2024-11-23 23:33:32,224 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1214 GetRequests, 1181 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=295, Invalid=761, Unknown=0, NotChecked=0, Total=1056 [2024-11-23 23:33:32,226 INFO L435 NwaCegarLoop]: 917 mSDtfsCounter, 1061 mSDsluCounter, 2924 mSDsCounter, 0 mSdLazyCounter, 2910 mSolverCounterSat, 623 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1115 SdHoareTripleChecker+Valid, 3841 SdHoareTripleChecker+Invalid, 3533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 623 IncrementalHoareTripleChecker+Valid, 2910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:33:32,226 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1115 Valid, 3841 Invalid, 3533 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [623 Valid, 2910 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-23 23:33:32,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3950 states. [2024-11-23 23:33:32,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3950 to 3501. [2024-11-23 23:33:32,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3501 states, 2185 states have (on average 1.4718535469107552) internal successors, (3216), 2196 states have internal predecessors, (3216), 1270 states have call successors, (1270), 45 states have call predecessors, (1270), 45 states have return successors, (1270), 1259 states have call predecessors, (1270), 1270 states have call successors, (1270) [2024-11-23 23:33:32,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3501 states to 3501 states and 5756 transitions. [2024-11-23 23:33:32,974 INFO L78 Accepts]: Start accepts. Automaton has 3501 states and 5756 transitions. Word has length 592 [2024-11-23 23:33:32,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:33:32,976 INFO L471 AbstractCegarLoop]: Abstraction has 3501 states and 5756 transitions. [2024-11-23 23:33:32,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.0) internal successors, (132), 11 states have internal predecessors, (132), 2 states have call successors, (143), 2 states have call predecessors, (143), 4 states have return successors, (144), 2 states have call predecessors, (144), 2 states have call successors, (144) [2024-11-23 23:33:32,977 INFO L276 IsEmpty]: Start isEmpty. Operand 3501 states and 5756 transitions. [2024-11-23 23:33:32,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2024-11-23 23:33:32,983 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:33:32,984 INFO L218 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:33:32,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed8e84f-e62a-4136-94b4-99d4811e91f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-23 23:33:33,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed8e84f-e62a-4136-94b4-99d4811e91f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-23 23:33:33,185 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:33:33,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:33:33,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1221943631, now seen corresponding path program 1 times [2024-11-23 23:33:33,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:33:33,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921339721] [2024-11-23 23:33:33,186 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:33:33,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:33:33,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:33:36,301 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2024-11-23 23:33:36,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:33:36,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921339721] [2024-11-23 23:33:36,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921339721] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:33:36,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:33:36,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 23:33:36,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117476462] [2024-11-23 23:33:36,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:33:36,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 23:33:36,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:33:36,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 23:33:36,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:33:36,304 INFO L87 Difference]: Start difference. First operand 3501 states and 5756 transitions. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 2 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) [2024-11-23 23:33:40,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:33:40,304 INFO L93 Difference]: Finished difference Result 8484 states and 13910 transitions. [2024-11-23 23:33:40,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:33:40,305 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 2 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) Word has length 592 [2024-11-23 23:33:40,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:33:40,341 INFO L225 Difference]: With dead ends: 8484 [2024-11-23 23:33:40,341 INFO L226 Difference]: Without dead ends: 4993 [2024-11-23 23:33:40,355 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:33:40,356 INFO L435 NwaCegarLoop]: 705 mSDtfsCounter, 794 mSDsluCounter, 1752 mSDsCounter, 0 mSdLazyCounter, 1464 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 2457 SdHoareTripleChecker+Invalid, 1720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 1464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:33:40,356 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 2457 Invalid, 1720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 1464 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-23 23:33:40,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4993 states. [2024-11-23 23:33:41,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4993 to 4885. [2024-11-23 23:33:41,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4885 states, 3029 states have (on average 1.463519313304721) internal successors, (4433), 3044 states have internal predecessors, (4433), 1787 states have call successors, (1787), 68 states have call predecessors, (1787), 68 states have return successors, (1787), 1772 states have call predecessors, (1787), 1787 states have call successors, (1787) [2024-11-23 23:33:41,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4885 states to 4885 states and 8007 transitions. [2024-11-23 23:33:41,437 INFO L78 Accepts]: Start accepts. Automaton has 4885 states and 8007 transitions. Word has length 592 [2024-11-23 23:33:41,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:33:41,441 INFO L471 AbstractCegarLoop]: Abstraction has 4885 states and 8007 transitions. [2024-11-23 23:33:41,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 2 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) [2024-11-23 23:33:41,441 INFO L276 IsEmpty]: Start isEmpty. Operand 4885 states and 8007 transitions. [2024-11-23 23:33:41,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2024-11-23 23:33:41,452 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:33:41,452 INFO L218 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:33:41,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 23:33:41,453 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:33:41,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:33:41,454 INFO L85 PathProgramCache]: Analyzing trace with hash -520343757, now seen corresponding path program 1 times [2024-11-23 23:33:41,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:33:41,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236112354] [2024-11-23 23:33:41,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:33:41,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:33:41,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:33:42,984 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2024-11-23 23:33:42,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:33:42,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236112354] [2024-11-23 23:33:42,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236112354] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:33:42,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:33:42,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:33:42,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332669913] [2024-11-23 23:33:42,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:33:42,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:33:42,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:33:42,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:33:42,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:33:42,987 INFO L87 Difference]: Start difference. First operand 4885 states and 8007 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2024-11-23 23:33:45,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:33:45,695 INFO L93 Difference]: Finished difference Result 10928 states and 17913 transitions. [2024-11-23 23:33:45,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:33:45,696 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 592 [2024-11-23 23:33:45,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:33:45,738 INFO L225 Difference]: With dead ends: 10928 [2024-11-23 23:33:45,739 INFO L226 Difference]: Without dead ends: 6122 [2024-11-23 23:33:45,757 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:33:45,758 INFO L435 NwaCegarLoop]: 980 mSDtfsCounter, 633 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 1948 SdHoareTripleChecker+Invalid, 988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:33:45,758 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 1948 Invalid, 988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-23 23:33:45,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6122 states. [2024-11-23 23:33:47,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6122 to 6102. [2024-11-23 23:33:47,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6102 states, 3788 states have (on average 1.462777191129884) internal successors, (5541), 3808 states have internal predecessors, (5541), 2228 states have call successors, (2228), 85 states have call predecessors, (2228), 85 states have return successors, (2228), 2208 states have call predecessors, (2228), 2228 states have call successors, (2228) [2024-11-23 23:33:47,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6102 states to 6102 states and 9997 transitions. [2024-11-23 23:33:47,208 INFO L78 Accepts]: Start accepts. Automaton has 6102 states and 9997 transitions. Word has length 592 [2024-11-23 23:33:47,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:33:47,209 INFO L471 AbstractCegarLoop]: Abstraction has 6102 states and 9997 transitions. [2024-11-23 23:33:47,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2024-11-23 23:33:47,212 INFO L276 IsEmpty]: Start isEmpty. Operand 6102 states and 9997 transitions. [2024-11-23 23:33:47,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2024-11-23 23:33:47,223 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:33:47,223 INFO L218 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:33:47,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 23:33:47,224 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:33:47,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:33:47,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1616310417, now seen corresponding path program 1 times [2024-11-23 23:33:47,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:33:47,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209414047] [2024-11-23 23:33:47,225 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:33:47,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:33:47,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:33:48,003 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 267 proven. 24 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2024-11-23 23:33:48,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:33:48,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209414047] [2024-11-23 23:33:48,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209414047] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:33:48,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657800404] [2024-11-23 23:33:48,004 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:33:48,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:33:48,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed8e84f-e62a-4136-94b4-99d4811e91f7/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:33:48,006 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed8e84f-e62a-4136-94b4-99d4811e91f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:33:48,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed8e84f-e62a-4136-94b4-99d4811e91f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 23:33:48,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:33:48,367 INFO L256 TraceCheckSpWp]: Trace formula consists of 1278 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 23:33:48,384 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:33:48,619 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 3123 proven. 24 refuted. 0 times theorem prover too weak. 15865 trivial. 0 not checked. [2024-11-23 23:33:48,620 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:33:49,192 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 267 proven. 24 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2024-11-23 23:33:49,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657800404] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:33:49,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:33:49,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-11-23 23:33:49,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413213909] [2024-11-23 23:33:49,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:33:49,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:33:49,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:33:49,195 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:33:49,195 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:33:49,196 INFO L87 Difference]: Start difference. First operand 6102 states and 9997 transitions. Second operand has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 2 states have call successors, (106), 2 states have call predecessors, (106), 4 states have return successors, (107), 2 states have call predecessors, (107), 2 states have call successors, (107) [2024-11-23 23:33:50,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:33:50,407 INFO L93 Difference]: Finished difference Result 12281 states and 20012 transitions. [2024-11-23 23:33:50,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 23:33:50,408 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 2 states have call successors, (106), 2 states have call predecessors, (106), 4 states have return successors, (107), 2 states have call predecessors, (107), 2 states have call successors, (107) Word has length 592 [2024-11-23 23:33:50,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:33:50,542 INFO L225 Difference]: With dead ends: 12281 [2024-11-23 23:33:50,542 INFO L226 Difference]: Without dead ends: 6258 [2024-11-23 23:33:50,577 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1191 GetRequests, 1181 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:33:50,581 INFO L435 NwaCegarLoop]: 304 mSDtfsCounter, 260 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:33:50,581 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 716 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 23:33:50,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6258 states. [2024-11-23 23:33:52,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6258 to 6154. [2024-11-23 23:33:52,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6154 states, 3827 states have (on average 1.4413378625555264) internal successors, (5516), 3847 states have internal predecessors, (5516), 2228 states have call successors, (2228), 98 states have call predecessors, (2228), 98 states have return successors, (2228), 2208 states have call predecessors, (2228), 2228 states have call successors, (2228) [2024-11-23 23:33:52,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6154 states to 6154 states and 9972 transitions. [2024-11-23 23:33:52,098 INFO L78 Accepts]: Start accepts. Automaton has 6154 states and 9972 transitions. Word has length 592 [2024-11-23 23:33:52,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:33:52,099 INFO L471 AbstractCegarLoop]: Abstraction has 6154 states and 9972 transitions. [2024-11-23 23:33:52,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 2 states have call successors, (106), 2 states have call predecessors, (106), 4 states have return successors, (107), 2 states have call predecessors, (107), 2 states have call successors, (107) [2024-11-23 23:33:52,100 INFO L276 IsEmpty]: Start isEmpty. Operand 6154 states and 9972 transitions. [2024-11-23 23:33:52,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2024-11-23 23:33:52,108 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:33:52,108 INFO L218 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:33:52,122 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed8e84f-e62a-4136-94b4-99d4811e91f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 23:33:52,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed8e84f-e62a-4136-94b4-99d4811e91f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-23 23:33:52,310 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:33:52,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:33:52,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1398793201, now seen corresponding path program 1 times [2024-11-23 23:33:52,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:33:52,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681955273] [2024-11-23 23:33:52,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:33:52,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:33:52,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:33:53,719 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 201 proven. 90 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2024-11-23 23:33:53,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:33:53,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681955273] [2024-11-23 23:33:53,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681955273] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:33:53,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177115139] [2024-11-23 23:33:53,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:33:53,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:33:53,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed8e84f-e62a-4136-94b4-99d4811e91f7/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:33:53,723 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed8e84f-e62a-4136-94b4-99d4811e91f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:33:53,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed8e84f-e62a-4136-94b4-99d4811e91f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 23:33:54,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:33:54,134 INFO L256 TraceCheckSpWp]: Trace formula consists of 1279 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-23 23:33:54,150 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:33:56,609 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 11633 proven. 309 refuted. 0 times theorem prover too weak. 7070 trivial. 0 not checked. [2024-11-23 23:33:56,610 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:33:57,684 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 201 proven. 90 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2024-11-23 23:33:57,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177115139] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:33:57,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:33:57,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 13, 7] total 21 [2024-11-23 23:33:57,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612814469] [2024-11-23 23:33:57,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:33:57,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-23 23:33:57,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:33:57,688 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-23 23:33:57,688 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2024-11-23 23:33:57,688 INFO L87 Difference]: Start difference. First operand 6154 states and 9972 transitions. Second operand has 21 states, 21 states have (on average 10.095238095238095) internal successors, (212), 20 states have internal predecessors, (212), 6 states have call successors, (175), 4 states have call predecessors, (175), 7 states have return successors, (177), 6 states have call predecessors, (177), 6 states have call successors, (177) [2024-11-23 23:34:07,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:34:07,756 INFO L93 Difference]: Finished difference Result 36401 states and 57782 transitions. [2024-11-23 23:34:07,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2024-11-23 23:34:07,757 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 10.095238095238095) internal successors, (212), 20 states have internal predecessors, (212), 6 states have call successors, (175), 4 states have call predecessors, (175), 7 states have return successors, (177), 6 states have call predecessors, (177), 6 states have call successors, (177) Word has length 592 [2024-11-23 23:34:07,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:34:07,995 INFO L225 Difference]: With dead ends: 36401 [2024-11-23 23:34:07,996 INFO L226 Difference]: Without dead ends: 30326 [2024-11-23 23:34:08,042 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1263 GetRequests, 1176 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2846 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1692, Invalid=6140, Unknown=0, NotChecked=0, Total=7832 [2024-11-23 23:34:08,047 INFO L435 NwaCegarLoop]: 504 mSDtfsCounter, 2141 mSDsluCounter, 1971 mSDsCounter, 0 mSdLazyCounter, 2754 mSolverCounterSat, 1415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2243 SdHoareTripleChecker+Valid, 2475 SdHoareTripleChecker+Invalid, 4169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1415 IncrementalHoareTripleChecker+Valid, 2754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:34:08,047 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2243 Valid, 2475 Invalid, 4169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1415 Valid, 2754 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-23 23:34:08,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30326 states. [2024-11-23 23:34:12,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30326 to 25989. [2024-11-23 23:34:12,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25989 states, 16704 states have (on average 1.4437859195402298) internal successors, (24117), 16806 states have internal predecessors, (24117), 8710 states have call successors, (8710), 574 states have call predecessors, (8710), 574 states have return successors, (8710), 8608 states have call predecessors, (8710), 8710 states have call successors, (8710) [2024-11-23 23:34:12,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25989 states to 25989 states and 41537 transitions. [2024-11-23 23:34:12,910 INFO L78 Accepts]: Start accepts. Automaton has 25989 states and 41537 transitions. Word has length 592 [2024-11-23 23:34:12,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:34:12,911 INFO L471 AbstractCegarLoop]: Abstraction has 25989 states and 41537 transitions. [2024-11-23 23:34:12,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 10.095238095238095) internal successors, (212), 20 states have internal predecessors, (212), 6 states have call successors, (175), 4 states have call predecessors, (175), 7 states have return successors, (177), 6 states have call predecessors, (177), 6 states have call successors, (177) [2024-11-23 23:34:12,912 INFO L276 IsEmpty]: Start isEmpty. Operand 25989 states and 41537 transitions. [2024-11-23 23:34:12,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2024-11-23 23:34:12,928 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:34:12,928 INFO L218 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:34:12,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed8e84f-e62a-4136-94b4-99d4811e91f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 23:34:13,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed8e84f-e62a-4136-94b4-99d4811e91f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:34:13,133 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:34:13,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:34:13,134 INFO L85 PathProgramCache]: Analyzing trace with hash -79492826, now seen corresponding path program 1 times [2024-11-23 23:34:13,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:34:13,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126670718] [2024-11-23 23:34:13,136 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:34:13,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:34:13,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-23 23:34:13,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1291169004] [2024-11-23 23:34:13,623 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:34:13,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:34:13,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed8e84f-e62a-4136-94b4-99d4811e91f7/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:34:13,625 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed8e84f-e62a-4136-94b4-99d4811e91f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:34:13,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed8e84f-e62a-4136-94b4-99d4811e91f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 23:34:14,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:34:14,066 INFO L256 TraceCheckSpWp]: Trace formula consists of 1281 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-23 23:34:14,078 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:34:16,335 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 6297 proven. 231 refuted. 0 times theorem prover too weak. 12484 trivial. 0 not checked. [2024-11-23 23:34:16,335 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:34:17,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:34:17,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126670718] [2024-11-23 23:34:17,635 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-23 23:34:17,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291169004] [2024-11-23 23:34:17,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291169004] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:34:17,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:34:17,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2024-11-23 23:34:17,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58664336] [2024-11-23 23:34:17,636 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-23 23:34:17,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:34:17,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:34:17,638 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:34:17,639 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:34:17,640 INFO L87 Difference]: Start difference. First operand 25989 states and 41537 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 6 states have internal predecessors, (112), 2 states have call successors, (98), 2 states have call predecessors, (98), 3 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) [2024-11-23 23:34:25,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:34:25,406 INFO L93 Difference]: Finished difference Result 79817 states and 126088 transitions. [2024-11-23 23:34:25,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 23:34:25,407 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 6 states have internal predecessors, (112), 2 states have call successors, (98), 2 states have call predecessors, (98), 3 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) Word has length 593 [2024-11-23 23:34:25,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:34:25,779 INFO L225 Difference]: With dead ends: 79817 [2024-11-23 23:34:25,779 INFO L226 Difference]: Without dead ends: 53907 [2024-11-23 23:34:25,865 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 647 GetRequests, 634 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2024-11-23 23:34:25,865 INFO L435 NwaCegarLoop]: 328 mSDtfsCounter, 300 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 1325 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-23 23:34:25,866 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 1325 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-23 23:34:25,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53907 states. [2024-11-23 23:34:34,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53907 to 52881. [2024-11-23 23:34:34,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52881 states, 34079 states have (on average 1.4268317732327827) internal successors, (48625), 34282 states have internal predecessors, (48625), 17373 states have call successors, (17373), 1428 states have call predecessors, (17373), 1428 states have return successors, (17373), 17170 states have call predecessors, (17373), 17373 states have call successors, (17373) [2024-11-23 23:34:34,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52881 states to 52881 states and 83371 transitions. [2024-11-23 23:34:34,810 INFO L78 Accepts]: Start accepts. Automaton has 52881 states and 83371 transitions. Word has length 593 [2024-11-23 23:34:34,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:34:34,811 INFO L471 AbstractCegarLoop]: Abstraction has 52881 states and 83371 transitions. [2024-11-23 23:34:34,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 6 states have internal predecessors, (112), 2 states have call successors, (98), 2 states have call predecessors, (98), 3 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) [2024-11-23 23:34:34,811 INFO L276 IsEmpty]: Start isEmpty. Operand 52881 states and 83371 transitions. [2024-11-23 23:34:34,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2024-11-23 23:34:34,828 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:34:34,829 INFO L218 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:34:34,840 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed8e84f-e62a-4136-94b4-99d4811e91f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-23 23:34:35,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed8e84f-e62a-4136-94b4-99d4811e91f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:34:35,033 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:34:35,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:34:35,034 INFO L85 PathProgramCache]: Analyzing trace with hash -888839452, now seen corresponding path program 1 times [2024-11-23 23:34:35,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:34:35,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496326880] [2024-11-23 23:34:35,034 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:34:35,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:34:35,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-23 23:34:35,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1072739880] [2024-11-23 23:34:35,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:34:35,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:34:35,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed8e84f-e62a-4136-94b4-99d4811e91f7/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:34:35,393 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed8e84f-e62a-4136-94b4-99d4811e91f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:34:35,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed8e84f-e62a-4136-94b4-99d4811e91f7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 23:34:35,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:34:35,883 INFO L256 TraceCheckSpWp]: Trace formula consists of 1279 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-23 23:34:35,896 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:34:38,865 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 5571 proven. 240 refuted. 0 times theorem prover too weak. 13201 trivial. 0 not checked. [2024-11-23 23:34:38,866 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:34:40,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:34:40,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496326880] [2024-11-23 23:34:40,276 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-23 23:34:40,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072739880] [2024-11-23 23:34:40,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072739880] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:34:40,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:34:40,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2024-11-23 23:34:40,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062552471] [2024-11-23 23:34:40,277 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-23 23:34:40,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 23:34:40,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:34:40,279 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 23:34:40,279 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:34:40,280 INFO L87 Difference]: Start difference. First operand 52881 states and 83371 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 2 states have call successors, (98), 2 states have call predecessors, (98), 3 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98)