./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-2.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_11bea31c-28c0-4e6a-8ae6-d26f324b37c1/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11bea31c-28c0-4e6a-8ae6-d26f324b37c1/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_11bea31c-28c0-4e6a-8ae6-d26f324b37c1/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11bea31c-28c0-4e6a-8ae6-d26f324b37c1/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11bea31c-28c0-4e6a-8ae6-d26f324b37c1/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_11bea31c-28c0-4e6a-8ae6-d26f324b37c1/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 0f4d1a0f878f07f9b07af3368e16f27fe17adbf3f533e01dbd51821a170a1e65 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:17:10,869 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:17:10,958 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11bea31c-28c0-4e6a-8ae6-d26f324b37c1/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 00:17:10,964 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:17:10,967 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:17:11,013 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:17:11,017 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:17:11,017 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:17:11,018 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:17:11,018 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:17:11,019 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:17:11,019 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:17:11,020 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:17:11,020 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:17:11,020 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:17:11,020 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:17:11,021 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:17:11,021 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 00:17:11,022 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:17:11,022 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 00:17:11,022 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:17:11,022 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:17:11,022 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:17:11,022 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:17:11,022 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 00:17:11,022 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:17:11,023 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:17:11,023 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:17:11,023 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:17:11,023 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:17:11,023 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:17:11,023 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:17:11,023 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:17:11,023 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:17:11,023 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:17:11,024 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:17:11,024 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:17:11,024 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:17:11,024 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:17:11,024 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:17:11,024 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:17:11,024 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:17:11,024 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:17:11,024 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:17:11,024 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:17:11,024 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:17:11,024 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:17:11,025 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:17:11,025 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_11bea31c-28c0-4e6a-8ae6-d26f324b37c1/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 -> 0f4d1a0f878f07f9b07af3368e16f27fe17adbf3f533e01dbd51821a170a1e65 [2024-11-24 00:17:11,409 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:17:11,435 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:17:11,445 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:17:11,447 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:17:11,451 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:17:11,453 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11bea31c-28c0-4e6a-8ae6-d26f324b37c1/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-2.i [2024-11-24 00:17:14,651 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11bea31c-28c0-4e6a-8ae6-d26f324b37c1/bin/uautomizer-verify-LYvppIcaGC/data/f2887c916/5444e53139bd4f399a9050ad04ecd165/FLAG6f2cd9209 [2024-11-24 00:17:15,103 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:17:15,104 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11bea31c-28c0-4e6a-8ae6-d26f324b37c1/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-2.i [2024-11-24 00:17:15,118 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11bea31c-28c0-4e6a-8ae6-d26f324b37c1/bin/uautomizer-verify-LYvppIcaGC/data/f2887c916/5444e53139bd4f399a9050ad04ecd165/FLAG6f2cd9209 [2024-11-24 00:17:15,230 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11bea31c-28c0-4e6a-8ae6-d26f324b37c1/bin/uautomizer-verify-LYvppIcaGC/data/f2887c916/5444e53139bd4f399a9050ad04ecd165 [2024-11-24 00:17:15,232 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:17:15,233 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:17:15,235 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:17:15,235 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:17:15,240 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:17:15,241 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:17:15" (1/1) ... [2024-11-24 00:17:15,242 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@321bf8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:15, skipping insertion in model container [2024-11-24 00:17:15,242 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:17:15" (1/1) ... [2024-11-24 00:17:15,311 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:17:15,511 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_11bea31c-28c0-4e6a-8ae6-d26f324b37c1/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-2.i[915,928] [2024-11-24 00:17:15,917 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:17:15,939 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:17:15,950 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_11bea31c-28c0-4e6a-8ae6-d26f324b37c1/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-2.i[915,928] [2024-11-24 00:17:16,159 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:17:16,187 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:17:16,188 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:16 WrapperNode [2024-11-24 00:17:16,188 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:17:16,190 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:17:16,190 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:17:16,190 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:17:16,201 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:16" (1/1) ... [2024-11-24 00:17:16,236 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:16" (1/1) ... [2024-11-24 00:17:16,369 INFO L138 Inliner]: procedures = 26, calls = 86, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 704 [2024-11-24 00:17:16,370 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:17:16,371 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:17:16,371 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:17:16,372 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:17:16,381 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:16" (1/1) ... [2024-11-24 00:17:16,381 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:16" (1/1) ... [2024-11-24 00:17:16,402 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:16" (1/1) ... [2024-11-24 00:17:16,497 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-24 00:17:16,497 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:16" (1/1) ... [2024-11-24 00:17:16,497 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:16" (1/1) ... [2024-11-24 00:17:16,552 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:16" (1/1) ... [2024-11-24 00:17:16,562 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:16" (1/1) ... [2024-11-24 00:17:16,576 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:16" (1/1) ... [2024-11-24 00:17:16,594 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:16" (1/1) ... [2024-11-24 00:17:16,599 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:16" (1/1) ... [2024-11-24 00:17:16,622 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:17:16,623 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:17:16,624 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:17:16,624 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:17:16,625 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:16" (1/1) ... [2024-11-24 00:17:16,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:17:16,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11bea31c-28c0-4e6a-8ae6-d26f324b37c1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:17:16,661 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11bea31c-28c0-4e6a-8ae6-d26f324b37c1/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:17:16,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11bea31c-28c0-4e6a-8ae6-d26f324b37c1/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:17:16,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:17:16,693 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 00:17:16,693 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 00:17:16,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:17:16,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:17:16,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:17:16,888 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:17:16,890 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:17:18,690 INFO L? ?]: Removed 82 outVars from TransFormulas that were not future-live. [2024-11-24 00:17:18,690 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:17:18,724 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:17:18,725 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-24 00:17:18,725 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:17:18 BoogieIcfgContainer [2024-11-24 00:17:18,725 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:17:18,729 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:17:18,729 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:17:18,737 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:17:18,737 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:17:15" (1/3) ... [2024-11-24 00:17:18,739 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b8222d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:17:18, skipping insertion in model container [2024-11-24 00:17:18,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:16" (2/3) ... [2024-11-24 00:17:18,740 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b8222d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:17:18, skipping insertion in model container [2024-11-24 00:17:18,741 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:17:18" (3/3) ... [2024-11-24 00:17:18,743 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-2.i [2024-11-24 00:17:18,762 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:17:18,766 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount500_file-2.i that has 2 procedures, 280 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 00:17:18,866 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:17:18,881 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;@42e8b00a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:17:18,882 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 00:17:18,890 INFO L276 IsEmpty]: Start isEmpty. Operand has 280 states, 204 states have (on average 1.5392156862745099) internal successors, (314), 205 states have internal predecessors, (314), 73 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2024-11-24 00:17:18,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2024-11-24 00:17:18,932 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:17:18,934 INFO L218 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:17:18,934 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:17:18,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:18,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1161289383, now seen corresponding path program 1 times [2024-11-24 00:17:18,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:18,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850531897] [2024-11-24 00:17:18,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:18,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:19,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:20,066 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 10368 trivial. 0 not checked. [2024-11-24 00:17:20,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:17:20,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850531897] [2024-11-24 00:17:20,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850531897] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:17:20,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417083146] [2024-11-24 00:17:20,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:20,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:17:20,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11bea31c-28c0-4e6a-8ae6-d26f324b37c1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:17:20,077 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11bea31c-28c0-4e6a-8ae6-d26f324b37c1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:17:20,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11bea31c-28c0-4e6a-8ae6-d26f324b37c1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:17:20,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:20,690 INFO L256 TraceCheckSpWp]: Trace formula consists of 1214 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-24 00:17:20,711 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:17:20,790 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 10368 trivial. 0 not checked. [2024-11-24 00:17:20,790 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:17:20,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417083146] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:17:20,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:17:20,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-24 00:17:20,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378459549] [2024-11-24 00:17:20,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:17:20,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 00:17:20,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:17:20,828 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 00:17:20,829 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:17:20,833 INFO L87 Difference]: Start difference. First operand has 280 states, 204 states have (on average 1.5392156862745099) internal successors, (314), 205 states have internal predecessors, (314), 73 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) Second operand has 2 states, 2 states have (on average 67.0) internal successors, (134), 2 states have internal predecessors, (134), 2 states have call successors, (73), 2 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 2 states have call successors, (73) [2024-11-24 00:17:20,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:17:20,934 INFO L93 Difference]: Finished difference Result 553 states and 987 transitions. [2024-11-24 00:17:20,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 00:17:20,936 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 67.0) internal successors, (134), 2 states have internal predecessors, (134), 2 states have call successors, (73), 2 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 2 states have call successors, (73) Word has length 494 [2024-11-24 00:17:20,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:17:20,949 INFO L225 Difference]: With dead ends: 553 [2024-11-24 00:17:20,949 INFO L226 Difference]: Without dead ends: 276 [2024-11-24 00:17:20,959 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 495 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:17:20,963 INFO L435 NwaCegarLoop]: 453 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, 453 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:17:20,966 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:17:20,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2024-11-24 00:17:21,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2024-11-24 00:17:21,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 201 states have (on average 1.527363184079602) internal successors, (307), 201 states have internal predecessors, (307), 73 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2024-11-24 00:17:21,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 453 transitions. [2024-11-24 00:17:21,075 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 453 transitions. Word has length 494 [2024-11-24 00:17:21,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:17:21,077 INFO L471 AbstractCegarLoop]: Abstraction has 276 states and 453 transitions. [2024-11-24 00:17:21,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 67.0) internal successors, (134), 2 states have internal predecessors, (134), 2 states have call successors, (73), 2 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 2 states have call successors, (73) [2024-11-24 00:17:21,078 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 453 transitions. [2024-11-24 00:17:21,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2024-11-24 00:17:21,098 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:17:21,099 INFO L218 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:17:21,111 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11bea31c-28c0-4e6a-8ae6-d26f324b37c1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 00:17:21,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11bea31c-28c0-4e6a-8ae6-d26f324b37c1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-24 00:17:21,304 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:17:21,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:21,305 INFO L85 PathProgramCache]: Analyzing trace with hash 601828571, now seen corresponding path program 1 times [2024-11-24 00:17:21,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:21,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952522929] [2024-11-24 00:17:21,305 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:21,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:21,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:22,258 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2024-11-24 00:17:22,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:17:22,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952522929] [2024-11-24 00:17:22,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952522929] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:17:22,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:17:22,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:17:22,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741249808] [2024-11-24 00:17:22,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:17:22,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:17:22,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:17:22,267 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:17:22,268 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:17:22,268 INFO L87 Difference]: Start difference. First operand 276 states and 453 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2024-11-24 00:17:22,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:17:22,469 INFO L93 Difference]: Finished difference Result 821 states and 1351 transitions. [2024-11-24 00:17:22,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:17:22,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 494 [2024-11-24 00:17:22,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:17:22,484 INFO L225 Difference]: With dead ends: 821 [2024-11-24 00:17:22,487 INFO L226 Difference]: Without dead ends: 548 [2024-11-24 00:17:22,489 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:17:22,490 INFO L435 NwaCegarLoop]: 683 mSDtfsCounter, 446 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:17:22,491 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 1125 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:17:22,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2024-11-24 00:17:22,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 277. [2024-11-24 00:17:22,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 202 states have (on average 1.5247524752475248) internal successors, (308), 202 states have internal predecessors, (308), 73 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2024-11-24 00:17:22,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 454 transitions. [2024-11-24 00:17:22,553 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 454 transitions. Word has length 494 [2024-11-24 00:17:22,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:17:22,556 INFO L471 AbstractCegarLoop]: Abstraction has 277 states and 454 transitions. [2024-11-24 00:17:22,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2024-11-24 00:17:22,557 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 454 transitions. [2024-11-24 00:17:22,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2024-11-24 00:17:22,569 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:17:22,570 INFO L218 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:17:22,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 00:17:22,570 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:17:22,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:22,572 INFO L85 PathProgramCache]: Analyzing trace with hash 656221469, now seen corresponding path program 1 times [2024-11-24 00:17:22,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:22,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108817414] [2024-11-24 00:17:22,573 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:22,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:22,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:23,294 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2024-11-24 00:17:23,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:17:23,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108817414] [2024-11-24 00:17:23,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108817414] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:17:23,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:17:23,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:17:23,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129322134] [2024-11-24 00:17:23,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:17:23,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:17:23,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:17:23,303 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:17:23,303 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:17:23,304 INFO L87 Difference]: Start difference. First operand 277 states and 454 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2024-11-24 00:17:23,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:17:23,490 INFO L93 Difference]: Finished difference Result 813 states and 1336 transitions. [2024-11-24 00:17:23,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:17:23,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 494 [2024-11-24 00:17:23,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:17:23,498 INFO L225 Difference]: With dead ends: 813 [2024-11-24 00:17:23,501 INFO L226 Difference]: Without dead ends: 539 [2024-11-24 00:17:23,503 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:17:23,505 INFO L435 NwaCegarLoop]: 678 mSDtfsCounter, 427 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:17:23,505 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 1116 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:17:23,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2024-11-24 00:17:23,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 339. [2024-11-24 00:17:23,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 264 states have (on average 1.5795454545454546) internal successors, (417), 264 states have internal predecessors, (417), 73 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2024-11-24 00:17:23,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 563 transitions. [2024-11-24 00:17:23,579 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 563 transitions. Word has length 494 [2024-11-24 00:17:23,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:17:23,581 INFO L471 AbstractCegarLoop]: Abstraction has 339 states and 563 transitions. [2024-11-24 00:17:23,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2024-11-24 00:17:23,581 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 563 transitions. [2024-11-24 00:17:23,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2024-11-24 00:17:23,599 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:17:23,599 INFO L218 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:17:23,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 00:17:23,600 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:17:23,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:23,601 INFO L85 PathProgramCache]: Analyzing trace with hash 696896219, now seen corresponding path program 1 times [2024-11-24 00:17:23,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:23,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302109256] [2024-11-24 00:17:23,601 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:23,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:23,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:24,154 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2024-11-24 00:17:24,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:17:24,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302109256] [2024-11-24 00:17:24,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302109256] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:17:24,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:17:24,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:17:24,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766618097] [2024-11-24 00:17:24,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:17:24,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:17:24,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:17:24,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:17:24,158 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:17:24,159 INFO L87 Difference]: Start difference. First operand 339 states and 563 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2024-11-24 00:17:24,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:17:24,285 INFO L93 Difference]: Finished difference Result 987 states and 1641 transitions. [2024-11-24 00:17:24,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:17:24,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 494 [2024-11-24 00:17:24,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:17:24,299 INFO L225 Difference]: With dead ends: 987 [2024-11-24 00:17:24,300 INFO L226 Difference]: Without dead ends: 651 [2024-11-24 00:17:24,301 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:17:24,302 INFO L435 NwaCegarLoop]: 446 mSDtfsCounter, 427 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 883 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:17:24,302 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 883 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:17:24,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2024-11-24 00:17:24,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 341. [2024-11-24 00:17:24,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 266 states have (on average 1.5751879699248121) internal successors, (419), 266 states have internal predecessors, (419), 73 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2024-11-24 00:17:24,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 565 transitions. [2024-11-24 00:17:24,364 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 565 transitions. Word has length 494 [2024-11-24 00:17:24,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:17:24,369 INFO L471 AbstractCegarLoop]: Abstraction has 341 states and 565 transitions. [2024-11-24 00:17:24,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2024-11-24 00:17:24,370 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 565 transitions. [2024-11-24 00:17:24,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2024-11-24 00:17:24,375 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:17:24,376 INFO L218 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:17:24,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 00:17:24,376 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:17:24,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:24,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1049984601, now seen corresponding path program 1 times [2024-11-24 00:17:24,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:24,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067562177] [2024-11-24 00:17:24,377 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:24,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:24,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:26,118 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2024-11-24 00:17:26,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:17:26,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067562177] [2024-11-24 00:17:26,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067562177] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:17:26,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:17:26,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:17:26,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925829237] [2024-11-24 00:17:26,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:17:26,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:17:26,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:17:26,125 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:17:26,125 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:17:26,126 INFO L87 Difference]: Start difference. First operand 341 states and 565 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2024-11-24 00:17:26,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:17:26,576 INFO L93 Difference]: Finished difference Result 1071 states and 1768 transitions. [2024-11-24 00:17:26,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:17:26,577 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 494 [2024-11-24 00:17:26,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:17:26,584 INFO L225 Difference]: With dead ends: 1071 [2024-11-24 00:17:26,584 INFO L226 Difference]: Without dead ends: 733 [2024-11-24 00:17:26,586 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:17:26,588 INFO L435 NwaCegarLoop]: 496 mSDtfsCounter, 575 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 1364 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:17:26,589 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [575 Valid, 1364 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 00:17:26,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2024-11-24 00:17:26,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 564. [2024-11-24 00:17:26,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 470 states have (on average 1.5957446808510638) internal successors, (750), 471 states have internal predecessors, (750), 91 states have call successors, (91), 2 states have call predecessors, (91), 2 states have return successors, (91), 90 states have call predecessors, (91), 91 states have call successors, (91) [2024-11-24 00:17:26,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 932 transitions. [2024-11-24 00:17:26,656 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 932 transitions. Word has length 494 [2024-11-24 00:17:26,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:17:26,661 INFO L471 AbstractCegarLoop]: Abstraction has 564 states and 932 transitions. [2024-11-24 00:17:26,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2024-11-24 00:17:26,661 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 932 transitions. [2024-11-24 00:17:26,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2024-11-24 00:17:26,667 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:17:26,667 INFO L218 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:17:26,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 00:17:26,667 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:17:26,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:26,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1873175397, now seen corresponding path program 1 times [2024-11-24 00:17:26,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:26,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118826056] [2024-11-24 00:17:26,670 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:26,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:27,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:28,696 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2024-11-24 00:17:28,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:17:28,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118826056] [2024-11-24 00:17:28,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118826056] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:17:28,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:17:28,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:17:28,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327077808] [2024-11-24 00:17:28,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:17:28,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:17:28,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:17:28,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:17:28,699 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:17:28,700 INFO L87 Difference]: Start difference. First operand 564 states and 932 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2024-11-24 00:17:29,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:17:29,472 INFO L93 Difference]: Finished difference Result 1780 states and 2927 transitions. [2024-11-24 00:17:29,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:17:29,473 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 494 [2024-11-24 00:17:29,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:17:29,484 INFO L225 Difference]: With dead ends: 1780 [2024-11-24 00:17:29,484 INFO L226 Difference]: Without dead ends: 1219 [2024-11-24 00:17:29,486 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:17:29,487 INFO L435 NwaCegarLoop]: 800 mSDtfsCounter, 523 mSDsluCounter, 1041 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:17:29,487 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [523 Valid, 1841 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 00:17:29,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2024-11-24 00:17:29,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1167. [2024-11-24 00:17:29,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1167 states, 980 states have (on average 1.5918367346938775) internal successors, (1560), 982 states have internal predecessors, (1560), 182 states have call successors, (182), 4 states have call predecessors, (182), 4 states have return successors, (182), 180 states have call predecessors, (182), 182 states have call successors, (182) [2024-11-24 00:17:29,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1924 transitions. [2024-11-24 00:17:29,604 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1924 transitions. Word has length 494 [2024-11-24 00:17:29,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:17:29,610 INFO L471 AbstractCegarLoop]: Abstraction has 1167 states and 1924 transitions. [2024-11-24 00:17:29,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2024-11-24 00:17:29,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1924 transitions. [2024-11-24 00:17:29,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2024-11-24 00:17:29,617 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:17:29,618 INFO L218 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:17:29,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 00:17:29,619 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:17:29,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:29,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1120199899, now seen corresponding path program 1 times [2024-11-24 00:17:29,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:29,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368790409] [2024-11-24 00:17:29,621 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:29,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:30,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:31,440 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2024-11-24 00:17:31,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:17:31,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368790409] [2024-11-24 00:17:31,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368790409] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:17:31,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:17:31,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:17:31,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868884464] [2024-11-24 00:17:31,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:17:31,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:17:31,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:17:31,443 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:17:31,443 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:17:31,444 INFO L87 Difference]: Start difference. First operand 1167 states and 1924 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2024-11-24 00:17:32,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:17:32,037 INFO L93 Difference]: Finished difference Result 3314 states and 5482 transitions. [2024-11-24 00:17:32,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:17:32,039 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 494 [2024-11-24 00:17:32,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:17:32,053 INFO L225 Difference]: With dead ends: 3314 [2024-11-24 00:17:32,053 INFO L226 Difference]: Without dead ends: 2150 [2024-11-24 00:17:32,057 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:17:32,058 INFO L435 NwaCegarLoop]: 450 mSDtfsCounter, 372 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 1360 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:17:32,059 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 1360 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 00:17:32,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2150 states. [2024-11-24 00:17:32,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2150 to 1291. [2024-11-24 00:17:32,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1291 states, 1030 states have (on average 1.5650485436893204) internal successors, (1612), 1032 states have internal predecessors, (1612), 255 states have call successors, (255), 5 states have call predecessors, (255), 5 states have return successors, (255), 253 states have call predecessors, (255), 255 states have call successors, (255) [2024-11-24 00:17:32,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1291 states to 1291 states and 2122 transitions. [2024-11-24 00:17:32,217 INFO L78 Accepts]: Start accepts. Automaton has 1291 states and 2122 transitions. Word has length 494 [2024-11-24 00:17:32,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:17:32,218 INFO L471 AbstractCegarLoop]: Abstraction has 1291 states and 2122 transitions. [2024-11-24 00:17:32,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2024-11-24 00:17:32,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1291 states and 2122 transitions. [2024-11-24 00:17:32,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2024-11-24 00:17:32,227 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:17:32,227 INFO L218 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:17:32,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 00:17:32,228 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:17:32,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:32,228 INFO L85 PathProgramCache]: Analyzing trace with hash -192936669, now seen corresponding path program 1 times [2024-11-24 00:17:32,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:32,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274858123] [2024-11-24 00:17:32,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:32,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:33,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:34,398 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2024-11-24 00:17:34,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:17:34,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274858123] [2024-11-24 00:17:34,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274858123] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:17:34,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:17:34,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:17:34,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395659012] [2024-11-24 00:17:34,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:17:34,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:17:34,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:17:34,402 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:17:34,402 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:17:34,403 INFO L87 Difference]: Start difference. First operand 1291 states and 2122 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2024-11-24 00:17:34,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:17:34,893 INFO L93 Difference]: Finished difference Result 2910 states and 4783 transitions. [2024-11-24 00:17:34,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:17:34,894 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 494 [2024-11-24 00:17:34,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:17:34,905 INFO L225 Difference]: With dead ends: 2910 [2024-11-24 00:17:34,905 INFO L226 Difference]: Without dead ends: 1746 [2024-11-24 00:17:34,909 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:17:34,909 INFO L435 NwaCegarLoop]: 496 mSDtfsCounter, 658 mSDsluCounter, 1040 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 1536 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:17:34,910 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [658 Valid, 1536 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 00:17:34,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1746 states. [2024-11-24 00:17:35,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1746 to 1336. [2024-11-24 00:17:35,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1336 states, 1075 states have (on average 1.5655813953488371) internal successors, (1683), 1077 states have internal predecessors, (1683), 255 states have call successors, (255), 5 states have call predecessors, (255), 5 states have return successors, (255), 253 states have call predecessors, (255), 255 states have call successors, (255) [2024-11-24 00:17:35,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1336 states to 1336 states and 2193 transitions. [2024-11-24 00:17:35,044 INFO L78 Accepts]: Start accepts. Automaton has 1336 states and 2193 transitions. Word has length 494 [2024-11-24 00:17:35,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:17:35,045 INFO L471 AbstractCegarLoop]: Abstraction has 1336 states and 2193 transitions. [2024-11-24 00:17:35,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2024-11-24 00:17:35,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1336 states and 2193 transitions. [2024-11-24 00:17:35,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2024-11-24 00:17:35,051 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:17:35,051 INFO L218 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:17:35,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 00:17:35,052 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:17:35,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:35,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1393136995, now seen corresponding path program 1 times [2024-11-24 00:17:35,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:35,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676777642] [2024-11-24 00:17:35,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:35,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:35,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:37,005 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2024-11-24 00:17:37,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:17:37,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676777642] [2024-11-24 00:17:37,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676777642] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:17:37,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:17:37,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:17:37,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603026691] [2024-11-24 00:17:37,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:17:37,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:17:37,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:17:37,009 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:17:37,009 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:17:37,009 INFO L87 Difference]: Start difference. First operand 1336 states and 2193 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2024-11-24 00:17:37,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:17:37,552 INFO L93 Difference]: Finished difference Result 3651 states and 5932 transitions. [2024-11-24 00:17:37,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:17:37,553 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 494 [2024-11-24 00:17:37,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:17:37,568 INFO L225 Difference]: With dead ends: 3651 [2024-11-24 00:17:37,568 INFO L226 Difference]: Without dead ends: 2442 [2024-11-24 00:17:37,572 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:17:37,573 INFO L435 NwaCegarLoop]: 594 mSDtfsCounter, 300 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 1398 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:17:37,573 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 1398 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 00:17:37,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2442 states. [2024-11-24 00:17:37,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2442 to 2168. [2024-11-24 00:17:37,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2168 states, 1826 states have (on average 1.575027382256298) internal successors, (2876), 1832 states have internal predecessors, (2876), 331 states have call successors, (331), 10 states have call predecessors, (331), 10 states have return successors, (331), 325 states have call predecessors, (331), 331 states have call successors, (331) [2024-11-24 00:17:37,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2168 states to 2168 states and 3538 transitions. [2024-11-24 00:17:37,923 INFO L78 Accepts]: Start accepts. Automaton has 2168 states and 3538 transitions. Word has length 494 [2024-11-24 00:17:37,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:17:37,926 INFO L471 AbstractCegarLoop]: Abstraction has 2168 states and 3538 transitions. [2024-11-24 00:17:37,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2024-11-24 00:17:37,926 INFO L276 IsEmpty]: Start isEmpty. Operand 2168 states and 3538 transitions. [2024-11-24 00:17:37,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2024-11-24 00:17:37,943 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:17:37,943 INFO L218 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:17:37,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 00:17:37,943 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:17:37,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:37,944 INFO L85 PathProgramCache]: Analyzing trace with hash -978602267, now seen corresponding path program 1 times [2024-11-24 00:17:37,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:37,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766034330] [2024-11-24 00:17:37,945 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:37,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:38,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:38,828 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2024-11-24 00:17:38,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:17:38,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766034330] [2024-11-24 00:17:38,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766034330] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:17:38,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:17:38,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:17:38,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118064876] [2024-11-24 00:17:38,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:17:38,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:17:38,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:17:38,831 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:17:38,831 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:17:38,831 INFO L87 Difference]: Start difference. First operand 2168 states and 3538 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2024-11-24 00:17:40,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:17:40,044 INFO L93 Difference]: Finished difference Result 7563 states and 12320 transitions. [2024-11-24 00:17:40,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:17:40,045 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 494 [2024-11-24 00:17:40,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:17:40,083 INFO L225 Difference]: With dead ends: 7563 [2024-11-24 00:17:40,084 INFO L226 Difference]: Without dead ends: 5526 [2024-11-24 00:17:40,089 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:17:40,090 INFO L435 NwaCegarLoop]: 758 mSDtfsCounter, 680 mSDsluCounter, 1333 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 2091 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-24 00:17:40,090 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 2091 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-24 00:17:40,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5526 states. [2024-11-24 00:17:40,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5526 to 5522. [2024-11-24 00:17:40,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5522 states, 4648 states have (on average 1.552065404475043) internal successors, (7214), 4666 states have internal predecessors, (7214), 847 states have call successors, (847), 26 states have call predecessors, (847), 26 states have return successors, (847), 829 states have call predecessors, (847), 847 states have call successors, (847) [2024-11-24 00:17:40,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5522 states to 5522 states and 8908 transitions. [2024-11-24 00:17:40,556 INFO L78 Accepts]: Start accepts. Automaton has 5522 states and 8908 transitions. Word has length 494 [2024-11-24 00:17:40,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:17:40,557 INFO L471 AbstractCegarLoop]: Abstraction has 5522 states and 8908 transitions. [2024-11-24 00:17:40,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2024-11-24 00:17:40,561 INFO L276 IsEmpty]: Start isEmpty. Operand 5522 states and 8908 transitions. [2024-11-24 00:17:40,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2024-11-24 00:17:40,576 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:17:40,576 INFO L218 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:17:40,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 00:17:40,577 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:17:40,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:40,578 INFO L85 PathProgramCache]: Analyzing trace with hash -792297051, now seen corresponding path program 1 times [2024-11-24 00:17:40,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:40,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373434122] [2024-11-24 00:17:40,579 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:40,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:41,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:42,081 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2024-11-24 00:17:42,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:17:42,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373434122] [2024-11-24 00:17:42,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373434122] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:17:42,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:17:42,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:17:42,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345579440] [2024-11-24 00:17:42,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:17:42,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:17:42,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:17:42,083 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:17:42,084 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:17:42,084 INFO L87 Difference]: Start difference. First operand 5522 states and 8908 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2024-11-24 00:17:43,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:17:43,096 INFO L93 Difference]: Finished difference Result 18875 states and 30390 transitions. [2024-11-24 00:17:43,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:17:43,097 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 494 [2024-11-24 00:17:43,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:17:43,176 INFO L225 Difference]: With dead ends: 18875 [2024-11-24 00:17:43,177 INFO L226 Difference]: Without dead ends: 13484 [2024-11-24 00:17:43,195 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:17:43,196 INFO L435 NwaCegarLoop]: 603 mSDtfsCounter, 485 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 1544 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:17:43,197 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 1544 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 00:17:43,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13484 states. [2024-11-24 00:17:44,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13484 to 11866. [2024-11-24 00:17:44,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11866 states, 10500 states have (on average 1.5737142857142856) internal successors, (16524), 10542 states have internal predecessors, (16524), 1315 states have call successors, (1315), 50 states have call predecessors, (1315), 50 states have return successors, (1315), 1273 states have call predecessors, (1315), 1315 states have call successors, (1315) [2024-11-24 00:17:44,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11866 states to 11866 states and 19154 transitions. [2024-11-24 00:17:44,290 INFO L78 Accepts]: Start accepts. Automaton has 11866 states and 19154 transitions. Word has length 494 [2024-11-24 00:17:44,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:17:44,291 INFO L471 AbstractCegarLoop]: Abstraction has 11866 states and 19154 transitions. [2024-11-24 00:17:44,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2024-11-24 00:17:44,291 INFO L276 IsEmpty]: Start isEmpty. Operand 11866 states and 19154 transitions. [2024-11-24 00:17:44,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2024-11-24 00:17:44,306 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:17:44,307 INFO L218 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:17:44,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-24 00:17:44,307 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:17:44,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:44,308 INFO L85 PathProgramCache]: Analyzing trace with hash -715969723, now seen corresponding path program 1 times [2024-11-24 00:17:44,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:44,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414858142] [2024-11-24 00:17:44,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:44,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:44,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:48,527 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2024-11-24 00:17:48,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:17:48,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414858142] [2024-11-24 00:17:48,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414858142] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:17:48,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:17:48,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-24 00:17:48,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014629453] [2024-11-24 00:17:48,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:17:48,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-24 00:17:48,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:17:48,529 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-24 00:17:48,529 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:17:48,530 INFO L87 Difference]: Start difference. First operand 11866 states and 19154 transitions. Second operand has 12 states, 12 states have (on average 11.0) internal successors, (132), 12 states have internal predecessors, (132), 3 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 3 states have call predecessors, (73), 3 states have call successors, (73) [2024-11-24 00:18:03,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:18:03,002 INFO L93 Difference]: Finished difference Result 121374 states and 195592 transitions. [2024-11-24 00:18:03,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-24 00:18:03,003 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 11.0) internal successors, (132), 12 states have internal predecessors, (132), 3 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 3 states have call predecessors, (73), 3 states have call successors, (73) Word has length 494 [2024-11-24 00:18:03,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:18:03,371 INFO L225 Difference]: With dead ends: 121374 [2024-11-24 00:18:03,372 INFO L226 Difference]: Without dead ends: 109639 [2024-11-24 00:18:03,419 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=401, Invalid=1005, Unknown=0, NotChecked=0, Total=1406 [2024-11-24 00:18:03,420 INFO L435 NwaCegarLoop]: 910 mSDtfsCounter, 4162 mSDsluCounter, 7236 mSDsCounter, 0 mSdLazyCounter, 3768 mSolverCounterSat, 634 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4162 SdHoareTripleChecker+Valid, 8146 SdHoareTripleChecker+Invalid, 4402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 634 IncrementalHoareTripleChecker+Valid, 3768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:18:03,420 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4162 Valid, 8146 Invalid, 4402 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [634 Valid, 3768 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2024-11-24 00:18:03,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109639 states. [2024-11-24 00:18:07,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109639 to 51071. [2024-11-24 00:18:07,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51071 states, 48388 states have (on average 1.5946309002231958) internal successors, (77161), 48547 states have internal predecessors, (77161), 2512 states have call successors, (2512), 170 states have call predecessors, (2512), 170 states have return successors, (2512), 2353 states have call predecessors, (2512), 2512 states have call successors, (2512) [2024-11-24 00:18:07,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51071 states to 51071 states and 82185 transitions. [2024-11-24 00:18:07,794 INFO L78 Accepts]: Start accepts. Automaton has 51071 states and 82185 transitions. Word has length 494 [2024-11-24 00:18:07,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:18:07,795 INFO L471 AbstractCegarLoop]: Abstraction has 51071 states and 82185 transitions. [2024-11-24 00:18:07,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.0) internal successors, (132), 12 states have internal predecessors, (132), 3 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 3 states have call predecessors, (73), 3 states have call successors, (73) [2024-11-24 00:18:07,795 INFO L276 IsEmpty]: Start isEmpty. Operand 51071 states and 82185 transitions. [2024-11-24 00:18:07,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2024-11-24 00:18:07,859 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:18:07,859 INFO L218 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:18:07,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-24 00:18:07,860 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:18:07,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:07,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1995833401, now seen corresponding path program 1 times [2024-11-24 00:18:07,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:07,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750302869] [2024-11-24 00:18:07,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:07,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:08,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:09,098 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2024-11-24 00:18:09,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:09,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750302869] [2024-11-24 00:18:09,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750302869] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:18:09,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:18:09,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:18:09,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418631555] [2024-11-24 00:18:09,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:18:09,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:18:09,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:09,101 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:18:09,101 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:18:09,101 INFO L87 Difference]: Start difference. First operand 51071 states and 82185 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2024-11-24 00:18:12,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:18:12,216 INFO L93 Difference]: Finished difference Result 151817 states and 244270 transitions. [2024-11-24 00:18:12,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:18:12,217 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 494 [2024-11-24 00:18:12,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:18:12,597 INFO L225 Difference]: With dead ends: 151817 [2024-11-24 00:18:12,597 INFO L226 Difference]: Without dead ends: 100877 [2024-11-24 00:18:12,680 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:18:12,682 INFO L435 NwaCegarLoop]: 437 mSDtfsCounter, 283 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:18:12,682 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 1207 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 00:18:12,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100877 states. [2024-11-24 00:18:16,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100877 to 100866. [2024-11-24 00:18:16,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100866 states, 95881 states have (on average 1.5906071067260459) internal successors, (152509), 96208 states have internal predecessors, (152509), 4645 states have call successors, (4645), 339 states have call predecessors, (4645), 339 states have return successors, (4645), 4318 states have call predecessors, (4645), 4645 states have call successors, (4645) [2024-11-24 00:18:16,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100866 states to 100866 states and 161799 transitions. [2024-11-24 00:18:16,398 INFO L78 Accepts]: Start accepts. Automaton has 100866 states and 161799 transitions. Word has length 494 [2024-11-24 00:18:16,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:18:16,399 INFO L471 AbstractCegarLoop]: Abstraction has 100866 states and 161799 transitions. [2024-11-24 00:18:16,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2024-11-24 00:18:16,400 INFO L276 IsEmpty]: Start isEmpty. Operand 100866 states and 161799 transitions. [2024-11-24 00:18:16,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2024-11-24 00:18:16,496 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:18:16,497 INFO L218 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:18:16,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 00:18:16,498 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:18:16,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:16,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1721073787, now seen corresponding path program 1 times [2024-11-24 00:18:16,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:16,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547067915] [2024-11-24 00:18:16,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:16,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:21,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:22,058 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 57 proven. 159 refuted. 0 times theorem prover too weak. 10296 trivial. 0 not checked. [2024-11-24 00:18:22,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:22,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547067915] [2024-11-24 00:18:22,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547067915] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:18:22,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300597052] [2024-11-24 00:18:22,060 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:22,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:18:22,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11bea31c-28c0-4e6a-8ae6-d26f324b37c1/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:18:22,064 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11bea31c-28c0-4e6a-8ae6-d26f324b37c1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:18:22,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11bea31c-28c0-4e6a-8ae6-d26f324b37c1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 00:18:22,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:22,539 INFO L256 TraceCheckSpWp]: Trace formula consists of 1213 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-24 00:18:22,558 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:18:26,093 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 1736 proven. 390 refuted. 0 times theorem prover too weak. 8386 trivial. 0 not checked. [2024-11-24 00:18:26,093 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:18:27,819 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 36 proven. 393 refuted. 0 times theorem prover too weak. 10083 trivial. 0 not checked. [2024-11-24 00:18:27,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300597052] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:18:27,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:18:27,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 10] total 21 [2024-11-24 00:18:27,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717147588] [2024-11-24 00:18:27,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:18:27,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-24 00:18:27,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:27,823 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-24 00:18:27,823 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2024-11-24 00:18:27,824 INFO L87 Difference]: Start difference. First operand 100866 states and 161799 transitions. Second operand has 21 states, 21 states have (on average 15.761904761904763) internal successors, (331), 21 states have internal predecessors, (331), 8 states have call successors, (219), 4 states have call predecessors, (219), 8 states have return successors, (219), 8 states have call predecessors, (219), 8 states have call successors, (219) [2024-11-24 00:18:34,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:18:34,187 INFO L93 Difference]: Finished difference Result 245304 states and 393119 transitions. [2024-11-24 00:18:34,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-24 00:18:34,188 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 15.761904761904763) internal successors, (331), 21 states have internal predecessors, (331), 8 states have call successors, (219), 4 states have call predecessors, (219), 8 states have return successors, (219), 8 states have call predecessors, (219), 8 states have call successors, (219) Word has length 494 [2024-11-24 00:18:34,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:18:34,582 INFO L225 Difference]: With dead ends: 245304 [2024-11-24 00:18:34,582 INFO L226 Difference]: Without dead ends: 144573 [2024-11-24 00:18:34,678 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1021 GetRequests, 975 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=570, Invalid=1686, Unknown=0, NotChecked=0, Total=2256 [2024-11-24 00:18:34,679 INFO L435 NwaCegarLoop]: 313 mSDtfsCounter, 3468 mSDsluCounter, 1843 mSDsCounter, 0 mSdLazyCounter, 1593 mSolverCounterSat, 958 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3468 SdHoareTripleChecker+Valid, 2156 SdHoareTripleChecker+Invalid, 2551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 958 IncrementalHoareTripleChecker+Valid, 1593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:18:34,679 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3468 Valid, 2156 Invalid, 2551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [958 Valid, 1593 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-24 00:18:34,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144573 states. [2024-11-24 00:18:39,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144573 to 123697. [2024-11-24 00:18:40,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123697 states, 117473 states have (on average 1.5735445591753) internal successors, (184849), 117863 states have internal predecessors, (184849), 5593 states have call successors, (5593), 630 states have call predecessors, (5593), 630 states have return successors, (5593), 5203 states have call predecessors, (5593), 5593 states have call successors, (5593) [2024-11-24 00:18:40,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123697 states to 123697 states and 196035 transitions. [2024-11-24 00:18:40,686 INFO L78 Accepts]: Start accepts. Automaton has 123697 states and 196035 transitions. Word has length 494 [2024-11-24 00:18:40,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:18:40,687 INFO L471 AbstractCegarLoop]: Abstraction has 123697 states and 196035 transitions. [2024-11-24 00:18:40,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 15.761904761904763) internal successors, (331), 21 states have internal predecessors, (331), 8 states have call successors, (219), 4 states have call predecessors, (219), 8 states have return successors, (219), 8 states have call predecessors, (219), 8 states have call successors, (219) [2024-11-24 00:18:40,689 INFO L276 IsEmpty]: Start isEmpty. Operand 123697 states and 196035 transitions. [2024-11-24 00:18:40,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2024-11-24 00:18:40,801 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:18:40,801 INFO L218 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:18:40,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11bea31c-28c0-4e6a-8ae6-d26f324b37c1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-24 00:18:41,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11bea31c-28c0-4e6a-8ae6-d26f324b37c1/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-24 00:18:41,002 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:18:41,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:41,003 INFO L85 PathProgramCache]: Analyzing trace with hash -377737337, now seen corresponding path program 1 times [2024-11-24 00:18:41,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:41,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921208762] [2024-11-24 00:18:41,004 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:41,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:41,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:42,471 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2024-11-24 00:18:42,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:42,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921208762] [2024-11-24 00:18:42,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921208762] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:18:42,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:18:42,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:18:42,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243283453] [2024-11-24 00:18:42,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:18:42,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:18:42,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:42,474 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:18:42,474 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:18:42,475 INFO L87 Difference]: Start difference. First operand 123697 states and 196035 transitions. Second operand has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2024-11-24 00:18:49,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:18:49,709 INFO L93 Difference]: Finished difference Result 490743 states and 783635 transitions. [2024-11-24 00:18:49,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 00:18:49,710 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 494 [2024-11-24 00:18:49,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:18:50,785 INFO L225 Difference]: With dead ends: 490743 [2024-11-24 00:18:50,786 INFO L226 Difference]: Without dead ends: 367193 [2024-11-24 00:18:50,899 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:18:50,899 INFO L435 NwaCegarLoop]: 727 mSDtfsCounter, 1414 mSDsluCounter, 1567 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1414 SdHoareTripleChecker+Valid, 2294 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-24 00:18:50,900 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1414 Valid, 2294 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-24 00:18:51,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367193 states.