./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursified_loop-simple/recursified_nested_2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursified_loop-simple/recursified_nested_2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB --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 1a590e2514668f126114e4312bb6236a04cce9502b393533b5b4bfd230be904b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:23:05,840 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:23:05,974 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:23:05,981 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:23:05,981 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:23:06,023 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:23:06,024 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:23:06,024 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:23:06,025 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:23:06,025 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:23:06,026 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:23:06,026 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:23:06,027 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:23:06,027 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:23:06,027 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:23:06,027 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:23:06,029 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:23:06,030 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:23:06,030 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:23:06,030 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:23:06,030 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:23:06,030 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:23:06,030 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:23:06,031 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:23:06,031 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:23:06,031 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:23:06,031 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:23:06,031 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:23:06,031 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:23:06,031 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:23:06,032 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:23:06,032 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:23:06,032 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:23:06,032 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:23:06,032 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:23:06,032 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:23:06,032 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:23:06,032 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:23:06,032 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:23:06,032 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:23:06,033 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:23:06,033 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:23:06,033 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:23:06,033 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:23:06,033 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:23:06,033 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:23:06,033 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:23:06,033 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:23:06,033 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_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 1a590e2514668f126114e4312bb6236a04cce9502b393533b5b4bfd230be904b [2024-11-28 02:23:06,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:23:06,418 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:23:06,423 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:23:06,425 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:23:06,425 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:23:06,427 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/recursified_loop-simple/recursified_nested_2.c [2024-11-28 02:23:09,933 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/data/47d4ad7de/0b90c8e24c1e47c1bb2b167bd02e4ee5/FLAG956fa9c64 [2024-11-28 02:23:10,266 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:23:10,266 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/sv-benchmarks/c/recursified_loop-simple/recursified_nested_2.c [2024-11-28 02:23:10,274 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/data/47d4ad7de/0b90c8e24c1e47c1bb2b167bd02e4ee5/FLAG956fa9c64 [2024-11-28 02:23:10,292 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/data/47d4ad7de/0b90c8e24c1e47c1bb2b167bd02e4ee5 [2024-11-28 02:23:10,295 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:23:10,296 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:23:10,298 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:23:10,298 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:23:10,304 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:23:10,306 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:23:10" (1/1) ... [2024-11-28 02:23:10,307 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18eab6f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:23:10, skipping insertion in model container [2024-11-28 02:23:10,307 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:23:10" (1/1) ... [2024-11-28 02:23:10,329 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:23:10,522 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_ece34c15-81ff-43bc-8650-ba7150ae57a2/sv-benchmarks/c/recursified_loop-simple/recursified_nested_2.c[1611,1624] [2024-11-28 02:23:10,530 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:23:10,545 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:23:10,562 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_ece34c15-81ff-43bc-8650-ba7150ae57a2/sv-benchmarks/c/recursified_loop-simple/recursified_nested_2.c[1611,1624] [2024-11-28 02:23:10,562 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:23:10,583 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:23:10,584 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:23:10 WrapperNode [2024-11-28 02:23:10,585 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:23:10,586 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:23:10,586 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:23:10,586 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:23:10,599 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:23:10" (1/1) ... [2024-11-28 02:23:10,606 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:23:10" (1/1) ... [2024-11-28 02:23:10,626 INFO L138 Inliner]: procedures = 13, calls = 29, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 38 [2024-11-28 02:23:10,626 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:23:10,627 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:23:10,629 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:23:10,629 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:23:10,639 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:23:10" (1/1) ... [2024-11-28 02:23:10,640 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:23:10" (1/1) ... [2024-11-28 02:23:10,643 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:23:10" (1/1) ... [2024-11-28 02:23:10,662 INFO L175 MemorySlicer]: Split 14 memory accesses to 3 slices as follows [2, 6, 6]. 43 percent of accesses are in the largest equivalence class. The 4 initializations are split as follows [2, 1, 1]. The 4 writes are split as follows [0, 2, 2]. [2024-11-28 02:23:10,662 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:23:10" (1/1) ... [2024-11-28 02:23:10,662 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:23:10" (1/1) ... [2024-11-28 02:23:10,668 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:23:10" (1/1) ... [2024-11-28 02:23:10,669 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:23:10" (1/1) ... [2024-11-28 02:23:10,671 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:23:10" (1/1) ... [2024-11-28 02:23:10,674 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:23:10" (1/1) ... [2024-11-28 02:23:10,675 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:23:10" (1/1) ... [2024-11-28 02:23:10,677 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:23:10,678 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:23:10,678 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:23:10,678 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:23:10,679 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:23:10" (1/1) ... [2024-11-28 02:23:10,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:23:10,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:10,721 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:23:10,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:23:10,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:23:10,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:23:10,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:23:10,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 02:23:10,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 02:23:10,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 02:23:10,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 02:23:10,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 02:23:10,764 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_20_to_21_0 [2024-11-28 02:23:10,764 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_20_to_21_0 [2024-11-28 02:23:10,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:23:10,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:23:10,765 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 02:23:10,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 02:23:10,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 02:23:10,767 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_21_to_21_0 [2024-11-28 02:23:10,767 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_21_to_21_0 [2024-11-28 02:23:10,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 02:23:10,884 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:23:10,886 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:23:11,128 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-28 02:23:11,128 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:23:11,141 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:23:11,142 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-28 02:23:11,142 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:23:11 BoogieIcfgContainer [2024-11-28 02:23:11,143 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:23:11,147 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:23:11,147 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:23:11,155 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:23:11,155 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:23:10" (1/3) ... [2024-11-28 02:23:11,156 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7251077e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:23:11, skipping insertion in model container [2024-11-28 02:23:11,156 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:23:10" (2/3) ... [2024-11-28 02:23:11,159 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7251077e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:23:11, skipping insertion in model container [2024-11-28 02:23:11,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:23:11" (3/3) ... [2024-11-28 02:23:11,162 INFO L128 eAbstractionObserver]: Analyzing ICFG recursified_nested_2.c [2024-11-28 02:23:11,180 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:23:11,182 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG recursified_nested_2.c that has 3 procedures, 24 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-28 02:23:11,275 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:23:11,302 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;@544c84d5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:23:11,303 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:23:11,308 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 16 states have (on average 1.3125) internal successors, (21), 19 states have internal predecessors, (21), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 02:23:11,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-28 02:23:11,318 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:11,319 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:11,320 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:11,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:11,329 INFO L85 PathProgramCache]: Analyzing trace with hash -927054850, now seen corresponding path program 1 times [2024-11-28 02:23:11,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:11,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317214915] [2024-11-28 02:23:11,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:11,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:11,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:12,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:23:12,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:12,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317214915] [2024-11-28 02:23:12,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317214915] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:23:12,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:23:12,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:23:12,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433571839] [2024-11-28 02:23:12,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:23:12,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:23:12,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:12,209 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:23:12,209 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:23:12,212 INFO L87 Difference]: Start difference. First operand has 24 states, 16 states have (on average 1.3125) internal successors, (21), 19 states have internal predecessors, (21), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:23:12,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:12,440 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2024-11-28 02:23:12,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:23:12,442 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-11-28 02:23:12,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:12,450 INFO L225 Difference]: With dead ends: 35 [2024-11-28 02:23:12,450 INFO L226 Difference]: Without dead ends: 22 [2024-11-28 02:23:12,453 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:23:12,457 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 7 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:12,458 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 58 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:23:12,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-28 02:23:12,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-28 02:23:12,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 16 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-28 02:23:12,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2024-11-28 02:23:12,509 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 11 [2024-11-28 02:23:12,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:12,510 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2024-11-28 02:23:12,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:23:12,511 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2024-11-28 02:23:12,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-28 02:23:12,512 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:12,513 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:12,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:23:12,513 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:12,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:12,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1141956254, now seen corresponding path program 1 times [2024-11-28 02:23:12,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:12,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549252564] [2024-11-28 02:23:12,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:12,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:12,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:13,029 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:23:13,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:13,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549252564] [2024-11-28 02:23:13,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549252564] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:23:13,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:23:13,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:23:13,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351835875] [2024-11-28 02:23:13,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:23:13,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:23:13,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:13,032 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:23:13,032 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:23:13,032 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 1 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 02:23:13,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:13,151 INFO L93 Difference]: Finished difference Result 43 states and 53 transitions. [2024-11-28 02:23:13,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:23:13,152 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 1 states have call predecessors, (3), 3 states have call successors, (3) Word has length 22 [2024-11-28 02:23:13,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:13,153 INFO L225 Difference]: With dead ends: 43 [2024-11-28 02:23:13,154 INFO L226 Difference]: Without dead ends: 24 [2024-11-28 02:23:13,154 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:23:13,156 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 4 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:13,158 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 57 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:23:13,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-28 02:23:13,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-28 02:23:13,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 15 states have (on average 1.2) internal successors, (18), 17 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-28 02:23:13,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2024-11-28 02:23:13,174 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 22 [2024-11-28 02:23:13,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:13,174 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2024-11-28 02:23:13,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 1 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 02:23:13,175 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2024-11-28 02:23:13,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-28 02:23:13,178 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:13,178 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:13,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:23:13,179 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:13,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:13,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1444799936, now seen corresponding path program 1 times [2024-11-28 02:23:13,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:13,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868086722] [2024-11-28 02:23:13,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:13,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:13,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:13,959 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:23:13,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:13,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868086722] [2024-11-28 02:23:13,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868086722] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:13,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45532015] [2024-11-28 02:23:13,960 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:13,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:13,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:13,966 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:13,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:23:14,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:14,108 INFO L256 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-28 02:23:14,116 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:14,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 02:23:14,583 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 02:23:14,585 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:15,415 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 02:23:15,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45532015] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:15,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:15,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 24 [2024-11-28 02:23:15,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240720931] [2024-11-28 02:23:15,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:15,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 02:23:15,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:15,418 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 02:23:15,419 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2024-11-28 02:23:15,420 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 24 states, 18 states have (on average 2.111111111111111) internal successors, (38), 20 states have internal predecessors, (38), 10 states have call successors, (11), 5 states have call predecessors, (11), 8 states have return successors, (11), 7 states have call predecessors, (11), 10 states have call successors, (11) [2024-11-28 02:23:15,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:15,994 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2024-11-28 02:23:15,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 02:23:15,995 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 18 states have (on average 2.111111111111111) internal successors, (38), 20 states have internal predecessors, (38), 10 states have call successors, (11), 5 states have call predecessors, (11), 8 states have return successors, (11), 7 states have call predecessors, (11), 10 states have call successors, (11) Word has length 27 [2024-11-28 02:23:15,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:15,997 INFO L225 Difference]: With dead ends: 49 [2024-11-28 02:23:15,997 INFO L226 Difference]: Without dead ends: 28 [2024-11-28 02:23:15,998 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=178, Invalid=878, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 02:23:15,999 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 25 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:15,999 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 105 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:23:16,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-28 02:23:16,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-11-28 02:23:16,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 19 states have internal predecessors, (20), 4 states have call successors, (4), 2 states have call predecessors, (4), 6 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-28 02:23:16,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2024-11-28 02:23:16,014 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 27 [2024-11-28 02:23:16,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:16,014 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2024-11-28 02:23:16,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 18 states have (on average 2.111111111111111) internal successors, (38), 20 states have internal predecessors, (38), 10 states have call successors, (11), 5 states have call predecessors, (11), 8 states have return successors, (11), 7 states have call predecessors, (11), 10 states have call successors, (11) [2024-11-28 02:23:16,015 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2024-11-28 02:23:16,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-28 02:23:16,017 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:16,017 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:16,030 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:23:16,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:16,222 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:16,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:16,223 INFO L85 PathProgramCache]: Analyzing trace with hash 211909574, now seen corresponding path program 2 times [2024-11-28 02:23:16,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:16,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786961440] [2024-11-28 02:23:16,224 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:23:16,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:16,277 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:23:16,277 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:17,455 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 49 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 02:23:17,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:17,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786961440] [2024-11-28 02:23:17,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786961440] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:17,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572280774] [2024-11-28 02:23:17,456 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:23:17,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:17,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:17,459 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:17,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:23:17,595 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:23:17,595 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:17,602 INFO L256 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-28 02:23:17,608 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:17,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 02:23:18,022 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 45 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-28 02:23:18,024 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:19,777 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 4 proven. 56 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-28 02:23:19,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572280774] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:19,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:19,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 14] total 28 [2024-11-28 02:23:19,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185560450] [2024-11-28 02:23:19,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:19,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-28 02:23:19,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:19,784 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-28 02:23:19,787 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=606, Unknown=0, NotChecked=0, Total=756 [2024-11-28 02:23:19,788 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 28 states, 20 states have (on average 2.45) internal successors, (49), 24 states have internal predecessors, (49), 10 states have call successors, (16), 6 states have call predecessors, (16), 9 states have return successors, (18), 7 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-28 02:23:20,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:20,136 INFO L93 Difference]: Finished difference Result 57 states and 69 transitions. [2024-11-28 02:23:20,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:23:20,136 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 20 states have (on average 2.45) internal successors, (49), 24 states have internal predecessors, (49), 10 states have call successors, (16), 6 states have call predecessors, (16), 9 states have return successors, (18), 7 states have call predecessors, (18), 10 states have call successors, (18) Word has length 53 [2024-11-28 02:23:20,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:20,137 INFO L225 Difference]: With dead ends: 57 [2024-11-28 02:23:20,137 INFO L226 Difference]: Without dead ends: 32 [2024-11-28 02:23:20,138 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=234, Invalid=888, Unknown=0, NotChecked=0, Total=1122 [2024-11-28 02:23:20,138 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 27 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:20,139 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 157 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:23:20,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-28 02:23:20,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-28 02:23:20,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 4 states have call successors, (4), 2 states have call predecessors, (4), 8 states have return successors, (10), 8 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-28 02:23:20,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2024-11-28 02:23:20,150 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 53 [2024-11-28 02:23:20,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:20,151 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2024-11-28 02:23:20,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 20 states have (on average 2.45) internal successors, (49), 24 states have internal predecessors, (49), 10 states have call successors, (16), 6 states have call predecessors, (16), 9 states have return successors, (18), 7 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-28 02:23:20,151 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2024-11-28 02:23:20,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-28 02:23:20,155 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:20,155 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:20,166 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 02:23:20,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:20,356 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:20,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:20,357 INFO L85 PathProgramCache]: Analyzing trace with hash -24620602, now seen corresponding path program 3 times [2024-11-28 02:23:20,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:20,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506735739] [2024-11-28 02:23:20,358 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:23:20,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:20,409 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 02:23:20,410 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:21,164 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2024-11-28 02:23:21,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:21,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506735739] [2024-11-28 02:23:21,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506735739] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:21,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377307729] [2024-11-28 02:23:21,166 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:23:21,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:21,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:21,171 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:21,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:23:21,313 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 02:23:21,313 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:21,315 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-28 02:23:21,324 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:21,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 02:23:21,685 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2024-11-28 02:23:21,685 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:22,881 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2024-11-28 02:23:22,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377307729] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:22,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:22,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 14] total 29 [2024-11-28 02:23:22,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421852668] [2024-11-28 02:23:22,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:22,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-28 02:23:22,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:22,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-28 02:23:22,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=653, Unknown=0, NotChecked=0, Total=812 [2024-11-28 02:23:22,885 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 29 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 25 states have internal predecessors, (38), 13 states have call successors, (13), 5 states have call predecessors, (13), 8 states have return successors, (14), 11 states have call predecessors, (14), 13 states have call successors, (14) [2024-11-28 02:23:23,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:23,300 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2024-11-28 02:23:23,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 02:23:23,302 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 25 states have internal predecessors, (38), 13 states have call successors, (13), 5 states have call predecessors, (13), 8 states have return successors, (14), 11 states have call predecessors, (14), 13 states have call successors, (14) Word has length 73 [2024-11-28 02:23:23,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:23,303 INFO L225 Difference]: With dead ends: 41 [2024-11-28 02:23:23,304 INFO L226 Difference]: Without dead ends: 36 [2024-11-28 02:23:23,305 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=236, Invalid=886, Unknown=0, NotChecked=0, Total=1122 [2024-11-28 02:23:23,306 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 21 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:23,308 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 130 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:23:23,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-28 02:23:23,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-28 02:23:23,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 23 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 10 states have return successors, (12), 10 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-28 02:23:23,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2024-11-28 02:23:23,329 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 73 [2024-11-28 02:23:23,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:23,329 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2024-11-28 02:23:23,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 25 states have internal predecessors, (38), 13 states have call successors, (13), 5 states have call predecessors, (13), 8 states have return successors, (14), 11 states have call predecessors, (14), 13 states have call successors, (14) [2024-11-28 02:23:23,330 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2024-11-28 02:23:23,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-28 02:23:23,338 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:23,338 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 16, 16, 16, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:23,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 02:23:23,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:23,542 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:23,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:23,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1268827250, now seen corresponding path program 4 times [2024-11-28 02:23:23,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:23,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500349253] [2024-11-28 02:23:23,543 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:23:23,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:23,593 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:23:23,594 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:25,632 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 137 proven. 262 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2024-11-28 02:23:25,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:25,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500349253] [2024-11-28 02:23:25,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500349253] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:25,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989764712] [2024-11-28 02:23:25,636 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:23:25,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:25,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:25,639 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:25,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:23:25,875 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:23:25,875 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:25,879 INFO L256 TraceCheckSpWp]: Trace formula consists of 562 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-28 02:23:25,887 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:25,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 02:23:26,321 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 359 proven. 24 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2024-11-28 02:23:26,321 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:30,136 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 8 proven. 403 refuted. 0 times theorem prover too weak. 527 trivial. 0 not checked. [2024-11-28 02:23:30,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989764712] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:30,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:30,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 22] total 38 [2024-11-28 02:23:30,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466520139] [2024-11-28 02:23:30,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:30,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-28 02:23:30,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:30,140 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-28 02:23:30,142 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=1131, Unknown=0, NotChecked=0, Total=1406 [2024-11-28 02:23:30,142 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 38 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 32 states have internal predecessors, (57), 12 states have call successors, (18), 8 states have call predecessors, (18), 13 states have return successors, (24), 11 states have call predecessors, (24), 12 states have call successors, (24) [2024-11-28 02:23:30,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:30,659 INFO L93 Difference]: Finished difference Result 73 states and 87 transitions. [2024-11-28 02:23:30,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 02:23:30,660 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 32 states have internal predecessors, (57), 12 states have call successors, (18), 8 states have call predecessors, (18), 13 states have return successors, (24), 11 states have call predecessors, (24), 12 states have call successors, (24) Word has length 135 [2024-11-28 02:23:30,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:30,662 INFO L225 Difference]: With dead ends: 73 [2024-11-28 02:23:30,662 INFO L226 Difference]: Without dead ends: 40 [2024-11-28 02:23:30,664 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 251 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 770 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=429, Invalid=1641, Unknown=0, NotChecked=0, Total=2070 [2024-11-28 02:23:30,665 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 21 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:30,665 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 270 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:23:30,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-28 02:23:30,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-11-28 02:23:30,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 25 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 12 states have return successors, (14), 12 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-28 02:23:30,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2024-11-28 02:23:30,676 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 135 [2024-11-28 02:23:30,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:30,677 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2024-11-28 02:23:30,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 32 states have internal predecessors, (57), 12 states have call successors, (18), 8 states have call predecessors, (18), 13 states have return successors, (24), 11 states have call predecessors, (24), 12 states have call successors, (24) [2024-11-28 02:23:30,677 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2024-11-28 02:23:30,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-28 02:23:30,680 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:30,680 INFO L218 NwaCegarLoop]: trace histogram [28, 28, 24, 24, 24, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:30,693 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 02:23:30,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-28 02:23:30,885 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:30,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:30,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1558738830, now seen corresponding path program 5 times [2024-11-28 02:23:30,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:30,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374987111] [2024-11-28 02:23:30,886 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:23:30,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:31,143 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2024-11-28 02:23:31,143 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:33,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1846 backedges. 11 proven. 27 refuted. 0 times theorem prover too weak. 1808 trivial. 0 not checked. [2024-11-28 02:23:33,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:33,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374987111] [2024-11-28 02:23:33,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374987111] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:33,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081473543] [2024-11-28 02:23:33,593 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:23:33,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:33,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:33,595 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:33,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:23:34,665 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2024-11-28 02:23:34,665 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:34,672 INFO L256 TraceCheckSpWp]: Trace formula consists of 733 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-28 02:23:34,680 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:34,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 02:23:35,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-28 02:23:35,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 02:23:35,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1846 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 1819 trivial. 0 not checked. [2024-11-28 02:23:35,202 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:36,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081473543] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:36,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:23:36,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12] total 23 [2024-11-28 02:23:36,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283043958] [2024-11-28 02:23:36,278 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:36,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 02:23:36,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:36,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 02:23:36,281 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=532, Unknown=0, NotChecked=0, Total=702 [2024-11-28 02:23:36,281 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 23 states, 17 states have (on average 2.0) internal successors, (34), 21 states have internal predecessors, (34), 10 states have call successors, (10), 2 states have call predecessors, (10), 10 states have return successors, (13), 13 states have call predecessors, (13), 10 states have call successors, (13) [2024-11-28 02:23:36,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:36,486 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2024-11-28 02:23:36,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 02:23:36,487 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 17 states have (on average 2.0) internal successors, (34), 21 states have internal predecessors, (34), 10 states have call successors, (10), 2 states have call predecessors, (10), 10 states have return successors, (13), 13 states have call predecessors, (13), 10 states have call successors, (13) Word has length 175 [2024-11-28 02:23:36,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:36,489 INFO L225 Difference]: With dead ends: 51 [2024-11-28 02:23:36,490 INFO L226 Difference]: Without dead ends: 48 [2024-11-28 02:23:36,491 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=178, Invalid=578, Unknown=0, NotChecked=0, Total=756 [2024-11-28 02:23:36,492 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 29 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:36,492 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 50 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:23:36,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-28 02:23:36,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2024-11-28 02:23:36,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 28 states have internal predecessors, (30), 4 states have call successors, (4), 2 states have call predecessors, (4), 14 states have return successors, (18), 15 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-28 02:23:36,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2024-11-28 02:23:36,505 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 175 [2024-11-28 02:23:36,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:36,505 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2024-11-28 02:23:36,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 17 states have (on average 2.0) internal successors, (34), 21 states have internal predecessors, (34), 10 states have call successors, (10), 2 states have call predecessors, (10), 10 states have return successors, (13), 13 states have call predecessors, (13), 10 states have call successors, (13) [2024-11-28 02:23:36,506 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2024-11-28 02:23:36,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-28 02:23:36,509 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:36,509 INFO L218 NwaCegarLoop]: trace histogram [28, 28, 24, 24, 24, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:36,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 02:23:36,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:36,710 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:36,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:36,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1558740752, now seen corresponding path program 1 times [2024-11-28 02:23:36,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:36,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395539448] [2024-11-28 02:23:36,710 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:36,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:36,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:38,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1846 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 1810 trivial. 0 not checked. [2024-11-28 02:23:38,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:38,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395539448] [2024-11-28 02:23:38,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395539448] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:38,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4842493] [2024-11-28 02:23:38,854 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:38,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:38,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:38,856 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:38,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:23:39,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:39,170 INFO L256 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-28 02:23:39,178 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:39,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 02:23:39,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1846 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 1822 trivial. 0 not checked. [2024-11-28 02:23:39,652 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:42,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1846 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1788 trivial. 0 not checked. [2024-11-28 02:23:42,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4842493] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:42,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:42,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 22] total 40 [2024-11-28 02:23:42,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491547919] [2024-11-28 02:23:42,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:42,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-28 02:23:42,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:42,482 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-28 02:23:42,483 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=1247, Unknown=0, NotChecked=0, Total=1560 [2024-11-28 02:23:42,486 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand has 40 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 34 states have internal predecessors, (50), 17 states have call successors, (17), 7 states have call predecessors, (17), 12 states have return successors, (22), 17 states have call predecessors, (22), 17 states have call successors, (22) [2024-11-28 02:23:42,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:42,956 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2024-11-28 02:23:42,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 02:23:42,957 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 34 states have internal predecessors, (50), 17 states have call successors, (17), 7 states have call predecessors, (17), 12 states have return successors, (22), 17 states have call predecessors, (22), 17 states have call successors, (22) Word has length 175 [2024-11-28 02:23:42,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:42,959 INFO L225 Difference]: With dead ends: 49 [2024-11-28 02:23:42,960 INFO L226 Difference]: Without dead ends: 44 [2024-11-28 02:23:42,961 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 333 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 857 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=433, Invalid=1637, Unknown=0, NotChecked=0, Total=2070 [2024-11-28 02:23:42,962 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 18 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:42,962 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 147 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:23:42,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-28 02:23:42,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-11-28 02:23:42,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 25 states have (on average 1.12) internal successors, (28), 27 states have internal predecessors, (28), 4 states have call successors, (4), 2 states have call predecessors, (4), 14 states have return successors, (16), 14 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-28 02:23:42,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2024-11-28 02:23:42,986 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 175 [2024-11-28 02:23:42,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:42,987 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2024-11-28 02:23:42,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 34 states have internal predecessors, (50), 17 states have call successors, (17), 7 states have call predecessors, (17), 12 states have return successors, (22), 17 states have call predecessors, (22), 17 states have call successors, (22) [2024-11-28 02:23:42,988 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2024-11-28 02:23:42,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2024-11-28 02:23:42,995 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:42,996 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 36, 36, 36, 7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:43,009 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 02:23:43,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:43,200 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:43,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:43,201 INFO L85 PathProgramCache]: Analyzing trace with hash 33299286, now seen corresponding path program 6 times [2024-11-28 02:23:43,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:43,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605298480] [2024-11-28 02:23:43,201 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:23:43,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:43,530 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2024-11-28 02:23:43,530 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:45,759 INFO L134 CoverageAnalysis]: Checked inductivity of 4203 backedges. 984 proven. 34 refuted. 0 times theorem prover too weak. 3185 trivial. 0 not checked. [2024-11-28 02:23:45,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:45,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605298480] [2024-11-28 02:23:45,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605298480] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:45,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204166223] [2024-11-28 02:23:45,761 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:23:45,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:45,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:45,764 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:45,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 02:23:59,371 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2024-11-28 02:23:59,371 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:59,384 INFO L256 TraceCheckSpWp]: Trace formula consists of 1006 conjuncts, 148 conjuncts are in the unsatisfiable core [2024-11-28 02:23:59,394 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:59,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 02:23:59,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 02:24:00,070 INFO L134 CoverageAnalysis]: Checked inductivity of 4203 backedges. 1171 proven. 81 refuted. 0 times theorem prover too weak. 2951 trivial. 0 not checked. [2024-11-28 02:24:00,070 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:24:01,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2024-11-28 02:24:02,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2024-11-28 02:24:03,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2024-11-28 02:24:03,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2024-11-28 02:24:04,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2024-11-28 02:24:05,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204166223] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:24:05,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:24:05,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17] total 24 [2024-11-28 02:24:05,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244264649] [2024-11-28 02:24:05,392 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:24:05,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 02:24:05,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:24:05,394 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 02:24:05,394 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=688, Unknown=0, NotChecked=0, Total=756 [2024-11-28 02:24:05,394 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 24 states, 20 states have (on average 2.1) internal successors, (42), 24 states have internal predecessors, (42), 9 states have call successors, (11), 2 states have call predecessors, (11), 11 states have return successors, (16), 12 states have call predecessors, (16), 9 states have call successors, (16) [2024-11-28 02:24:06,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:24:06,238 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2024-11-28 02:24:06,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 02:24:06,239 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 20 states have (on average 2.1) internal successors, (42), 24 states have internal predecessors, (42), 9 states have call successors, (11), 2 states have call predecessors, (11), 11 states have return successors, (16), 12 states have call predecessors, (16), 9 states have call successors, (16) Word has length 257 [2024-11-28 02:24:06,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:24:06,240 INFO L225 Difference]: With dead ends: 49 [2024-11-28 02:24:06,241 INFO L226 Difference]: Without dead ends: 46 [2024-11-28 02:24:06,241 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=183, Invalid=1457, Unknown=0, NotChecked=0, Total=1640 [2024-11-28 02:24:06,242 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 24 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:24:06,242 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 278 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 02:24:06,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-28 02:24:06,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2024-11-28 02:24:06,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 25 states have (on average 1.08) internal successors, (27), 27 states have internal predecessors, (27), 4 states have call successors, (4), 2 states have call predecessors, (4), 14 states have return successors, (16), 14 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-28 02:24:06,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2024-11-28 02:24:06,255 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 257 [2024-11-28 02:24:06,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:24:06,256 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2024-11-28 02:24:06,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 20 states have (on average 2.1) internal successors, (42), 24 states have internal predecessors, (42), 9 states have call successors, (11), 2 states have call predecessors, (11), 11 states have return successors, (16), 12 states have call predecessors, (16), 9 states have call successors, (16) [2024-11-28 02:24:06,257 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2024-11-28 02:24:06,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2024-11-28 02:24:06,260 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:24:06,261 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 36, 36, 36, 7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:24:06,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 02:24:06,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:24:06,462 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:24:06,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:24:06,462 INFO L85 PathProgramCache]: Analyzing trace with hash 33301208, now seen corresponding path program 2 times [2024-11-28 02:24:06,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:24:06,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856278788] [2024-11-28 02:24:06,462 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:24:06,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:24:06,561 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:24:06,561 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:24:07,973 INFO L134 CoverageAnalysis]: Checked inductivity of 4203 backedges. 38 proven. 6 refuted. 0 times theorem prover too weak. 4159 trivial. 0 not checked. [2024-11-28 02:24:07,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:24:07,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856278788] [2024-11-28 02:24:07,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856278788] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:24:07,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524319947] [2024-11-28 02:24:07,974 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:24:07,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:24:07,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:24:07,976 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:24:07,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 02:24:08,399 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:24:08,399 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:24:08,406 INFO L256 TraceCheckSpWp]: Trace formula consists of 1054 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-28 02:24:08,415 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:24:08,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-28 02:24:08,838 INFO L134 CoverageAnalysis]: Checked inductivity of 4203 backedges. 1186 proven. 18 refuted. 0 times theorem prover too weak. 2999 trivial. 0 not checked. [2024-11-28 02:24:08,838 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:24:10,508 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-11-28 02:24:10,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 32 [2024-11-28 02:24:11,193 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-11-28 02:24:11,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 32 [2024-11-28 02:24:11,677 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-11-28 02:24:11,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 32 [2024-11-28 02:24:12,066 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-11-28 02:24:12,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 32 [2024-11-28 02:24:12,315 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-11-28 02:24:12,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 32 [2024-11-28 02:24:13,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524319947] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:24:13,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:24:13,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 16 [2024-11-28 02:24:13,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666342236] [2024-11-28 02:24:13,889 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:24:13,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 02:24:13,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:24:13,891 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 02:24:13,891 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=355, Unknown=1, NotChecked=0, Total=420 [2024-11-28 02:24:13,891 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 14 states have internal predecessors, (29), 5 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-28 02:24:18,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:24:18,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:24:18,197 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2024-11-28 02:24:18,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 02:24:18,198 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 14 states have internal predecessors, (29), 5 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) Word has length 257 [2024-11-28 02:24:18,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:24:18,199 INFO L225 Difference]: With dead ends: 48 [2024-11-28 02:24:18,199 INFO L226 Difference]: Without dead ends: 0 [2024-11-28 02:24:18,199 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 286 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=131, Invalid=624, Unknown=1, NotChecked=0, Total=756 [2024-11-28 02:24:18,200 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 16 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 10 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:24:18,200 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 36 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 163 Invalid, 3 Unknown, 0 Unchecked, 4.2s Time] [2024-11-28 02:24:18,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-28 02:24:18,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-28 02:24:18,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:24:18,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-28 02:24:18,201 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 257 [2024-11-28 02:24:18,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:24:18,201 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-28 02:24:18,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 14 states have internal predecessors, (29), 5 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-28 02:24:18,201 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-28 02:24:18,201 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-28 02:24:18,204 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-28 02:24:18,217 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 02:24:18,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:24:18,411 INFO L422 BasicCegarLoop]: Path program histogram: [6, 2, 1, 1] [2024-11-28 02:24:18,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-28 02:24:19,952 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 02:24:19,958 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:24:19 BoogieIcfgContainer [2024-11-28 02:24:19,958 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 02:24:19,958 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 02:24:19,958 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 02:24:19,958 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 02:24:19,959 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:23:11" (3/4) ... [2024-11-28 02:24:19,962 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-28 02:24:19,967 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure func_to_recursive_line_20_to_21_0 [2024-11-28 02:24:19,968 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure func_to_recursive_line_21_to_21_0 [2024-11-28 02:24:19,972 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-11-28 02:24:19,972 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-28 02:24:19,972 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-28 02:24:19,972 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-28 02:24:20,042 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 02:24:20,043 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 02:24:20,043 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 02:24:20,043 INFO L158 Benchmark]: Toolchain (without parser) took 69747.39ms. Allocated memory was 142.6MB in the beginning and 805.3MB in the end (delta: 662.7MB). Free memory was 100.5MB in the beginning and 725.8MB in the end (delta: -625.3MB). Peak memory consumption was 32.4MB. Max. memory is 16.1GB. [2024-11-28 02:24:20,044 INFO L158 Benchmark]: CDTParser took 1.69ms. Allocated memory is still 167.8MB. Free memory is still 102.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:24:20,044 INFO L158 Benchmark]: CACSL2BoogieTranslator took 287.38ms. Allocated memory is still 142.6MB. Free memory was 100.5MB in the beginning and 89.6MB in the end (delta: 10.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:24:20,045 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.34ms. Allocated memory is still 142.6MB. Free memory was 89.6MB in the beginning and 88.6MB in the end (delta: 994.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:24:20,045 INFO L158 Benchmark]: Boogie Preprocessor took 49.38ms. Allocated memory is still 142.6MB. Free memory was 88.6MB in the beginning and 87.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:24:20,046 INFO L158 Benchmark]: RCFGBuilder took 465.56ms. Allocated memory is still 142.6MB. Free memory was 87.2MB in the beginning and 76.2MB in the end (delta: 11.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 02:24:20,046 INFO L158 Benchmark]: TraceAbstraction took 68810.62ms. Allocated memory was 142.6MB in the beginning and 805.3MB in the end (delta: 662.7MB). Free memory was 75.5MB in the beginning and 729.7MB in the end (delta: -654.2MB). Peak memory consumption was 438.3MB. Max. memory is 16.1GB. [2024-11-28 02:24:20,047 INFO L158 Benchmark]: Witness Printer took 84.53ms. Allocated memory is still 805.3MB. Free memory was 729.7MB in the beginning and 725.8MB in the end (delta: 3.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:24:20,049 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.69ms. Allocated memory is still 167.8MB. Free memory is still 102.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 287.38ms. Allocated memory is still 142.6MB. Free memory was 100.5MB in the beginning and 89.6MB in the end (delta: 10.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.34ms. Allocated memory is still 142.6MB. Free memory was 89.6MB in the beginning and 88.6MB in the end (delta: 994.4kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 49.38ms. Allocated memory is still 142.6MB. Free memory was 88.6MB in the beginning and 87.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 465.56ms. Allocated memory is still 142.6MB. Free memory was 87.2MB in the beginning and 76.2MB in the end (delta: 11.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 68810.62ms. Allocated memory was 142.6MB in the beginning and 805.3MB in the end (delta: 662.7MB). Free memory was 75.5MB in the beginning and 729.7MB in the end (delta: -654.2MB). Peak memory consumption was 438.3MB. Max. memory is 16.1GB. * Witness Printer took 84.53ms. Allocated memory is still 805.3MB. Free memory was 729.7MB in the beginning and 725.8MB in the end (delta: 3.9MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 69]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 67.2s, OverallIterations: 10, TraceHistogramMax: 42, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.1s, AutomataDifference: 8.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 197 SdHoareTripleChecker+Valid, 6.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 192 mSDsluCounter, 1288 SdHoareTripleChecker+Invalid, 5.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1144 mSDsCounter, 113 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1712 IncrementalHoareTripleChecker+Invalid, 1828 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 113 mSolverCounterUnsat, 144 mSDtfsCounter, 1712 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1909 GetRequests, 1616 SyntacticMatches, 9 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3190 ImplicationChecksByTransitivity, 8.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=7, InterpolantAutomatonStates: 120, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 15.7s SatisfiabilityAnalysisTime, 39.8s InterpolantComputationTime, 2337 NumberOfCodeBlocks, 2247 NumberOfCodeBlocksAsserted, 142 NumberOfCheckSat, 2777 ConstructedInterpolants, 34 QuantifiedInterpolants, 9615 SizeOfPredicates, 104 NumberOfNonLiveVariables, 4694 ConjunctsInSsa, 523 ConjunctsInUnsatCore, 23 InterpolantComputations, 2 PerfectInterpolantSequences, 28694/29796 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-28 02:24:20,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ece34c15-81ff-43bc-8650-ba7150ae57a2/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE