./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/openbsd_cstrcat-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/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_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cstrcat-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8688e0efa9d37c2205606fbd307da42d83b0f0e2936dd15336b8b67e136d86b0 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:20:00,723 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:20:00,810 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-27 23:20:00,817 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:20:00,817 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:20:00,854 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:20:00,855 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:20:00,855 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:20:00,856 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:20:00,856 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:20:00,856 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:20:00,856 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:20:00,857 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:20:00,857 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:20:00,857 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:20:00,857 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:20:00,858 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:20:00,858 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:20:00,858 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:20:00,858 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:20:00,858 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-27 23:20:00,858 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-27 23:20:00,859 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-27 23:20:00,859 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:20:00,859 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-27 23:20:00,859 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 23:20:00,859 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:20:00,859 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:20:00,859 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:20:00,859 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:20:00,860 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:20:00,860 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:20:00,860 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:20:00,860 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:20:00,860 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:20:00,860 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:20:00,860 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:20:00,860 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:20:00,860 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:20:00,861 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:20:00,861 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:20:00,861 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:20:00,861 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:20:00,862 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:20:00,862 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:20:00,862 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:20:00,862 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:20:00,862 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_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> 8688e0efa9d37c2205606fbd307da42d83b0f0e2936dd15336b8b67e136d86b0 [2024-11-27 23:20:01,253 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:20:01,269 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:20:01,273 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:20:01,275 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:20:01,276 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:20:01,280 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/array-memsafety/openbsd_cstrcat-alloca-2.i [2024-11-27 23:20:04,616 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/data/bd0a5181c/6ddd4203f5ff4232b41a1c52c09cb856/FLAG13a9527a6 [2024-11-27 23:20:05,024 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:20:05,025 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/sv-benchmarks/c/array-memsafety/openbsd_cstrcat-alloca-2.i [2024-11-27 23:20:05,052 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/data/bd0a5181c/6ddd4203f5ff4232b41a1c52c09cb856/FLAG13a9527a6 [2024-11-27 23:20:05,081 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/data/bd0a5181c/6ddd4203f5ff4232b41a1c52c09cb856 [2024-11-27 23:20:05,084 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:20:05,086 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:20:05,089 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:20:05,091 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:20:05,097 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:20:05,100 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:20:05" (1/1) ... [2024-11-27 23:20:05,102 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73a03238 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:20:05, skipping insertion in model container [2024-11-27 23:20:05,102 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:20:05" (1/1) ... [2024-11-27 23:20:05,152 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:20:05,565 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:20:05,568 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:20:05,576 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:20:05,589 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:20:05,655 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:20:05,683 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:20:05,684 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:20:05 WrapperNode [2024-11-27 23:20:05,684 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:20:05,685 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:20:05,685 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:20:05,685 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:20:05,693 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:20:05" (1/1) ... [2024-11-27 23:20:05,705 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:20:05" (1/1) ... [2024-11-27 23:20:05,733 INFO L138 Inliner]: procedures = 117, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 96 [2024-11-27 23:20:05,733 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:20:05,734 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:20:05,734 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:20:05,734 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:20:05,743 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:20:05" (1/1) ... [2024-11-27 23:20:05,744 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:20:05" (1/1) ... [2024-11-27 23:20:05,747 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:20:05" (1/1) ... [2024-11-27 23:20:05,763 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [4, 3]. 57 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0]. The 5 writes are split as follows [3, 2]. [2024-11-27 23:20:05,763 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:20:05" (1/1) ... [2024-11-27 23:20:05,763 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:20:05" (1/1) ... [2024-11-27 23:20:05,771 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:20:05" (1/1) ... [2024-11-27 23:20:05,772 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:20:05" (1/1) ... [2024-11-27 23:20:05,776 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:20:05" (1/1) ... [2024-11-27 23:20:05,778 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:20:05" (1/1) ... [2024-11-27 23:20:05,778 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:20:05" (1/1) ... [2024-11-27 23:20:05,781 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:20:05,782 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:20:05,782 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:20:05,782 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:20:05,783 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:20:05" (1/1) ... [2024-11-27 23:20:05,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:20:05,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:20:05,821 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:20:05,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:20:05,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-27 23:20:05,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-27 23:20:05,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-27 23:20:05,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-27 23:20:05,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-27 23:20:05,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-27 23:20:05,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:20:05,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:20:06,017 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:20:06,019 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:20:06,367 INFO L? ?]: Removed 57 outVars from TransFormulas that were not future-live. [2024-11-27 23:20:06,368 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:20:06,379 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:20:06,380 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-27 23:20:06,380 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:20:06 BoogieIcfgContainer [2024-11-27 23:20:06,381 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:20:06,384 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:20:06,384 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:20:06,391 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:20:06,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:20:05" (1/3) ... [2024-11-27 23:20:06,392 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c56cacb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:20:06, skipping insertion in model container [2024-11-27 23:20:06,392 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:20:05" (2/3) ... [2024-11-27 23:20:06,392 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c56cacb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:20:06, skipping insertion in model container [2024-11-27 23:20:06,392 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:20:06" (3/3) ... [2024-11-27 23:20:06,394 INFO L128 eAbstractionObserver]: Analyzing ICFG openbsd_cstrcat-alloca-2.i [2024-11-27 23:20:06,414 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:20:06,415 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG openbsd_cstrcat-alloca-2.i that has 1 procedures, 46 locations, 1 initial locations, 4 loop locations, and 15 error locations. [2024-11-27 23:20:06,462 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:20:06,478 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=None, 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;@8076d05, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:20:06,478 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-11-27 23:20:06,483 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 30 states have (on average 1.9) internal successors, (57), 45 states have internal predecessors, (57), 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) [2024-11-27 23:20:06,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-27 23:20:06,490 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:06,490 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:06,491 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:20:06,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:06,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1805031100, now seen corresponding path program 1 times [2024-11-27 23:20:06,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:06,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834899101] [2024-11-27 23:20:06,508 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:06,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:06,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:06,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:06,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:06,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834899101] [2024-11-27 23:20:06,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834899101] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:20:06,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:20:06,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:20:06,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959669028] [2024-11-27 23:20:06,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:20:06,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:20:06,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:06,923 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:20:06,924 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:20:06,926 INFO L87 Difference]: Start difference. First operand has 46 states, 30 states have (on average 1.9) internal successors, (57), 45 states have internal predecessors, (57), 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) Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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) [2024-11-27 23:20:07,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:07,142 INFO L93 Difference]: Finished difference Result 66 states and 79 transitions. [2024-11-27 23:20:07,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:20:07,146 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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) Word has length 7 [2024-11-27 23:20:07,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:07,155 INFO L225 Difference]: With dead ends: 66 [2024-11-27 23:20:07,155 INFO L226 Difference]: Without dead ends: 64 [2024-11-27 23:20:07,157 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:20:07,162 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 25 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:07,166 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 166 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:20:07,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-27 23:20:07,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 47. [2024-11-27 23:20:07,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 32 states have (on average 1.75) internal successors, (56), 46 states have internal predecessors, (56), 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) [2024-11-27 23:20:07,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 56 transitions. [2024-11-27 23:20:07,216 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 56 transitions. Word has length 7 [2024-11-27 23:20:07,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:07,217 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 56 transitions. [2024-11-27 23:20:07,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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) [2024-11-27 23:20:07,218 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 56 transitions. [2024-11-27 23:20:07,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-27 23:20:07,219 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:07,219 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:07,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 23:20:07,220 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:20:07,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:07,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1805033022, now seen corresponding path program 1 times [2024-11-27 23:20:07,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:07,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394595090] [2024-11-27 23:20:07,223 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:07,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:07,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:07,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:07,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:07,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394595090] [2024-11-27 23:20:07,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394595090] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:20:07,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:20:07,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:20:07,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69126753] [2024-11-27 23:20:07,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:20:07,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:20:07,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:07,267 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:20:07,268 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:20:07,268 INFO L87 Difference]: Start difference. First operand 47 states and 56 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2024-11-27 23:20:07,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:07,333 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2024-11-27 23:20:07,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:20:07,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) Word has length 7 [2024-11-27 23:20:07,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:07,334 INFO L225 Difference]: With dead ends: 48 [2024-11-27 23:20:07,334 INFO L226 Difference]: Without dead ends: 47 [2024-11-27 23:20:07,335 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:20:07,336 INFO L435 NwaCegarLoop]: 50 mSDtfsCounter, 3 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:07,336 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 75 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:20:07,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-27 23:20:07,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2024-11-27 23:20:07,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 43 states have internal predecessors, (50), 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) [2024-11-27 23:20:07,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2024-11-27 23:20:07,341 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 7 [2024-11-27 23:20:07,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:07,342 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2024-11-27 23:20:07,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2024-11-27 23:20:07,342 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2024-11-27 23:20:07,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-27 23:20:07,343 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:07,343 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:07,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 23:20:07,343 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:20:07,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:07,344 INFO L85 PathProgramCache]: Analyzing trace with hash -531912816, now seen corresponding path program 1 times [2024-11-27 23:20:07,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:07,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200273107] [2024-11-27 23:20:07,345 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:07,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:07,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:07,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:07,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:07,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200273107] [2024-11-27 23:20:07,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200273107] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:20:07,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:20:07,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:20:07,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177631916] [2024-11-27 23:20:07,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:20:07,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:20:07,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:07,512 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:20:07,512 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:20:07,512 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2024-11-27 23:20:07,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:07,559 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2024-11-27 23:20:07,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:20:07,561 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) Word has length 9 [2024-11-27 23:20:07,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:07,562 INFO L225 Difference]: With dead ends: 58 [2024-11-27 23:20:07,562 INFO L226 Difference]: Without dead ends: 58 [2024-11-27 23:20:07,562 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:20:07,563 INFO L435 NwaCegarLoop]: 46 mSDtfsCounter, 13 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:07,563 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 101 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:20:07,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-27 23:20:07,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 48. [2024-11-27 23:20:07,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 33 states have (on average 1.696969696969697) internal successors, (56), 47 states have internal predecessors, (56), 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) [2024-11-27 23:20:07,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2024-11-27 23:20:07,575 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 9 [2024-11-27 23:20:07,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:07,575 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2024-11-27 23:20:07,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2024-11-27 23:20:07,575 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2024-11-27 23:20:07,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-27 23:20:07,576 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:07,576 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:07,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 23:20:07,578 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:20:07,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:07,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1243094546, now seen corresponding path program 1 times [2024-11-27 23:20:07,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:07,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226823698] [2024-11-27 23:20:07,579 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:07,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:07,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:07,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:07,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226823698] [2024-11-27 23:20:07,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226823698] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:20:07,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:20:07,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:20:07,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57256177] [2024-11-27 23:20:07,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:20:07,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:20:07,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:07,738 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:20:07,739 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:20:07,739 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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) [2024-11-27 23:20:07,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:07,834 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2024-11-27 23:20:07,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:20:07,838 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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) Word has length 9 [2024-11-27 23:20:07,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:07,840 INFO L225 Difference]: With dead ends: 54 [2024-11-27 23:20:07,840 INFO L226 Difference]: Without dead ends: 54 [2024-11-27 23:20:07,840 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:20:07,841 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 2 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:07,841 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 170 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:20:07,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-27 23:20:07,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2024-11-27 23:20:07,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 33 states have (on average 1.696969696969697) internal successors, (56), 47 states have internal predecessors, (56), 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) [2024-11-27 23:20:07,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2024-11-27 23:20:07,853 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 9 [2024-11-27 23:20:07,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:07,854 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2024-11-27 23:20:07,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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) [2024-11-27 23:20:07,857 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2024-11-27 23:20:07,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-27 23:20:07,857 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:07,858 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:07,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 23:20:07,858 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:20:07,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:07,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1300352848, now seen corresponding path program 1 times [2024-11-27 23:20:07,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:07,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367645579] [2024-11-27 23:20:07,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:07,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:07,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:08,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:08,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:08,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367645579] [2024-11-27 23:20:08,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367645579] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:20:08,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:20:08,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:20:08,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767512367] [2024-11-27 23:20:08,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:20:08,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:20:08,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:08,045 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:20:08,045 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:20:08,045 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2024-11-27 23:20:08,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:08,092 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2024-11-27 23:20:08,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:20:08,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) Word has length 9 [2024-11-27 23:20:08,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:08,093 INFO L225 Difference]: With dead ends: 46 [2024-11-27 23:20:08,094 INFO L226 Difference]: Without dead ends: 46 [2024-11-27 23:20:08,094 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:20:08,095 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 16 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:08,095 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 55 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:20:08,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-27 23:20:08,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-11-27 23:20:08,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 45 states have internal predecessors, (54), 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) [2024-11-27 23:20:08,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2024-11-27 23:20:08,100 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 9 [2024-11-27 23:20:08,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:08,100 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2024-11-27 23:20:08,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2024-11-27 23:20:08,101 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2024-11-27 23:20:08,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-27 23:20:08,101 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:08,102 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:08,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 23:20:08,102 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:20:08,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:08,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1300352849, now seen corresponding path program 1 times [2024-11-27 23:20:08,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:08,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630825907] [2024-11-27 23:20:08,103 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:08,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:08,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:08,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:08,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:08,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630825907] [2024-11-27 23:20:08,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630825907] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:20:08,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:20:08,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:20:08,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637529138] [2024-11-27 23:20:08,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:20:08,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:20:08,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:08,507 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:20:08,507 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:20:08,507 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 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) [2024-11-27 23:20:08,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:08,679 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2024-11-27 23:20:08,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:20:08,680 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 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) Word has length 9 [2024-11-27 23:20:08,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:08,681 INFO L225 Difference]: With dead ends: 51 [2024-11-27 23:20:08,681 INFO L226 Difference]: Without dead ends: 51 [2024-11-27 23:20:08,681 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:20:08,686 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 48 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:08,686 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 107 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:20:08,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-27 23:20:08,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2024-11-27 23:20:08,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 48 states have internal predecessors, (58), 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) [2024-11-27 23:20:08,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2024-11-27 23:20:08,694 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 9 [2024-11-27 23:20:08,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:08,694 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2024-11-27 23:20:08,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 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) [2024-11-27 23:20:08,694 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2024-11-27 23:20:08,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-27 23:20:08,695 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:08,695 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:08,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 23:20:08,695 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:20:08,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:08,696 INFO L85 PathProgramCache]: Analyzing trace with hash -65009352, now seen corresponding path program 1 times [2024-11-27 23:20:08,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:08,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019581437] [2024-11-27 23:20:08,696 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:08,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:08,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:08,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:08,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:08,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019581437] [2024-11-27 23:20:08,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019581437] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:20:08,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:20:08,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:20:08,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873099482] [2024-11-27 23:20:08,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:20:08,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:20:08,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:08,797 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:20:08,797 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:20:08,798 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2024-11-27 23:20:08,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:08,831 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2024-11-27 23:20:08,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:20:08,832 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) Word has length 11 [2024-11-27 23:20:08,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:08,833 INFO L225 Difference]: With dead ends: 67 [2024-11-27 23:20:08,833 INFO L226 Difference]: Without dead ends: 67 [2024-11-27 23:20:08,834 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:20:08,834 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 10 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:08,835 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 93 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:20:08,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-27 23:20:08,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 61. [2024-11-27 23:20:08,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 48 states have (on average 1.5208333333333333) internal successors, (73), 60 states have internal predecessors, (73), 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) [2024-11-27 23:20:08,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2024-11-27 23:20:08,842 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 11 [2024-11-27 23:20:08,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:08,843 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2024-11-27 23:20:08,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2024-11-27 23:20:08,843 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2024-11-27 23:20:08,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-27 23:20:08,847 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:08,847 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:08,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 23:20:08,847 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:20:08,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:08,849 INFO L85 PathProgramCache]: Analyzing trace with hash -65007173, now seen corresponding path program 1 times [2024-11-27 23:20:08,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:08,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657432911] [2024-11-27 23:20:08,849 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:08,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:08,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:09,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:09,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:09,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657432911] [2024-11-27 23:20:09,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657432911] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:20:09,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:20:09,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:20:09,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030233646] [2024-11-27 23:20:09,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:20:09,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:20:09,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:09,154 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:20:09,155 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:20:09,155 INFO L87 Difference]: Start difference. First operand 61 states and 73 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2024-11-27 23:20:09,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:09,188 INFO L93 Difference]: Finished difference Result 77 states and 91 transitions. [2024-11-27 23:20:09,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:20:09,190 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) Word has length 11 [2024-11-27 23:20:09,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:09,191 INFO L225 Difference]: With dead ends: 77 [2024-11-27 23:20:09,191 INFO L226 Difference]: Without dead ends: 77 [2024-11-27 23:20:09,191 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:20:09,192 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 14 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:09,192 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 87 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:20:09,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-27 23:20:09,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2024-11-27 23:20:09,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 62 states have (on average 1.467741935483871) internal successors, (91), 74 states have internal predecessors, (91), 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) [2024-11-27 23:20:09,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 91 transitions. [2024-11-27 23:20:09,200 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 91 transitions. Word has length 11 [2024-11-27 23:20:09,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:09,200 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 91 transitions. [2024-11-27 23:20:09,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2024-11-27 23:20:09,200 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 91 transitions. [2024-11-27 23:20:09,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-27 23:20:09,201 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:09,201 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:09,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 23:20:09,201 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:20:09,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:09,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1709998010, now seen corresponding path program 1 times [2024-11-27 23:20:09,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:09,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435633719] [2024-11-27 23:20:09,202 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:09,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:09,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:09,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:09,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:09,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435633719] [2024-11-27 23:20:09,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435633719] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:20:09,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:20:09,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 23:20:09,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789560833] [2024-11-27 23:20:09,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:20:09,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:20:09,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:09,335 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:20:09,335 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:20:09,335 INFO L87 Difference]: Start difference. First operand 75 states and 91 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 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) [2024-11-27 23:20:09,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:09,467 INFO L93 Difference]: Finished difference Result 91 states and 108 transitions. [2024-11-27 23:20:09,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:20:09,468 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 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) Word has length 11 [2024-11-27 23:20:09,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:09,469 INFO L225 Difference]: With dead ends: 91 [2024-11-27 23:20:09,469 INFO L226 Difference]: Without dead ends: 91 [2024-11-27 23:20:09,470 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:20:09,471 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 46 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:09,473 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 137 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:20:09,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-27 23:20:09,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 74. [2024-11-27 23:20:09,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 61 states have (on average 1.4918032786885247) internal successors, (91), 73 states have internal predecessors, (91), 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) [2024-11-27 23:20:09,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 91 transitions. [2024-11-27 23:20:09,486 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 91 transitions. Word has length 11 [2024-11-27 23:20:09,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:09,489 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 91 transitions. [2024-11-27 23:20:09,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 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) [2024-11-27 23:20:09,490 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 91 transitions. [2024-11-27 23:20:09,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-27 23:20:09,491 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:09,491 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:09,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 23:20:09,491 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:20:09,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:09,492 INFO L85 PathProgramCache]: Analyzing trace with hash 900651384, now seen corresponding path program 1 times [2024-11-27 23:20:09,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:09,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365333099] [2024-11-27 23:20:09,492 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:09,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:09,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:09,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:09,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:09,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365333099] [2024-11-27 23:20:09,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365333099] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:20:09,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:20:09,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:20:09,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118907048] [2024-11-27 23:20:09,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:20:09,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:20:09,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:09,583 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:20:09,583 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:20:09,583 INFO L87 Difference]: Start difference. First operand 74 states and 91 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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) [2024-11-27 23:20:09,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:09,626 INFO L93 Difference]: Finished difference Result 72 states and 88 transitions. [2024-11-27 23:20:09,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:20:09,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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) Word has length 11 [2024-11-27 23:20:09,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:09,628 INFO L225 Difference]: With dead ends: 72 [2024-11-27 23:20:09,628 INFO L226 Difference]: Without dead ends: 72 [2024-11-27 23:20:09,629 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:20:09,630 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 12 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:09,631 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 55 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:20:09,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-27 23:20:09,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-11-27 23:20:09,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 61 states have (on average 1.4426229508196722) internal successors, (88), 71 states have internal predecessors, (88), 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) [2024-11-27 23:20:09,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 88 transitions. [2024-11-27 23:20:09,638 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 88 transitions. Word has length 11 [2024-11-27 23:20:09,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:09,638 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 88 transitions. [2024-11-27 23:20:09,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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) [2024-11-27 23:20:09,638 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 88 transitions. [2024-11-27 23:20:09,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-27 23:20:09,639 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:09,639 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:09,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-27 23:20:09,640 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:20:09,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:09,640 INFO L85 PathProgramCache]: Analyzing trace with hash 900651385, now seen corresponding path program 1 times [2024-11-27 23:20:09,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:09,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072802533] [2024-11-27 23:20:09,641 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:09,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:09,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:09,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:09,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:09,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072802533] [2024-11-27 23:20:09,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072802533] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:20:09,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:20:09,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 23:20:09,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231539067] [2024-11-27 23:20:09,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:20:09,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:20:09,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:09,938 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:20:09,938 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:20:09,938 INFO L87 Difference]: Start difference. First operand 72 states and 88 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 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) [2024-11-27 23:20:10,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:10,103 INFO L93 Difference]: Finished difference Result 80 states and 98 transitions. [2024-11-27 23:20:10,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 23:20:10,103 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 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) Word has length 11 [2024-11-27 23:20:10,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:10,104 INFO L225 Difference]: With dead ends: 80 [2024-11-27 23:20:10,104 INFO L226 Difference]: Without dead ends: 80 [2024-11-27 23:20:10,105 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:20:10,105 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 23 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:10,106 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 126 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:20:10,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-27 23:20:10,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2024-11-27 23:20:10,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 67 states have (on average 1.4328358208955223) internal successors, (96), 77 states have internal predecessors, (96), 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) [2024-11-27 23:20:10,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 96 transitions. [2024-11-27 23:20:10,111 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 96 transitions. Word has length 11 [2024-11-27 23:20:10,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:10,112 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 96 transitions. [2024-11-27 23:20:10,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 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) [2024-11-27 23:20:10,112 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 96 transitions. [2024-11-27 23:20:10,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-27 23:20:10,112 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:10,112 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:10,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-27 23:20:10,113 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:20:10,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:10,113 INFO L85 PathProgramCache]: Analyzing trace with hash 615051197, now seen corresponding path program 1 times [2024-11-27 23:20:10,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:10,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949150510] [2024-11-27 23:20:10,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:10,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:10,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:10,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:10,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:10,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949150510] [2024-11-27 23:20:10,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949150510] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:20:10,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:20:10,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:20:10,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834160798] [2024-11-27 23:20:10,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:20:10,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:20:10,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:10,379 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:20:10,379 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:20:10,380 INFO L87 Difference]: Start difference. First operand 78 states and 96 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 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) [2024-11-27 23:20:10,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:10,422 INFO L93 Difference]: Finished difference Result 77 states and 95 transitions. [2024-11-27 23:20:10,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:20:10,423 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 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) Word has length 11 [2024-11-27 23:20:10,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:10,424 INFO L225 Difference]: With dead ends: 77 [2024-11-27 23:20:10,424 INFO L226 Difference]: Without dead ends: 77 [2024-11-27 23:20:10,424 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:20:10,425 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 24 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:10,426 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 61 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:20:10,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-27 23:20:10,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 62. [2024-11-27 23:20:10,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 52 states have (on average 1.4615384615384615) internal successors, (76), 61 states have internal predecessors, (76), 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) [2024-11-27 23:20:10,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 76 transitions. [2024-11-27 23:20:10,436 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 76 transitions. Word has length 11 [2024-11-27 23:20:10,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:10,437 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 76 transitions. [2024-11-27 23:20:10,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 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) [2024-11-27 23:20:10,437 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 76 transitions. [2024-11-27 23:20:10,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-27 23:20:10,438 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:10,438 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:10,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-27 23:20:10,441 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:20:10,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:10,442 INFO L85 PathProgramCache]: Analyzing trace with hash -2015222358, now seen corresponding path program 1 times [2024-11-27 23:20:10,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:10,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344927210] [2024-11-27 23:20:10,443 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:10,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:10,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:10,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:10,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:10,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344927210] [2024-11-27 23:20:10,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344927210] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:20:10,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:20:10,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:20:10,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313111790] [2024-11-27 23:20:10,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:20:10,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:20:10,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:10,688 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:20:10,688 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:20:10,689 INFO L87 Difference]: Start difference. First operand 62 states and 76 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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) [2024-11-27 23:20:10,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:10,763 INFO L93 Difference]: Finished difference Result 70 states and 84 transitions. [2024-11-27 23:20:10,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:20:10,764 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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) Word has length 12 [2024-11-27 23:20:10,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:10,765 INFO L225 Difference]: With dead ends: 70 [2024-11-27 23:20:10,765 INFO L226 Difference]: Without dead ends: 70 [2024-11-27 23:20:10,765 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:20:10,766 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 1 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:10,766 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 138 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:20:10,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-27 23:20:10,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2024-11-27 23:20:10,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 59 states have (on average 1.4067796610169492) internal successors, (83), 68 states have internal predecessors, (83), 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) [2024-11-27 23:20:10,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 83 transitions. [2024-11-27 23:20:10,771 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 83 transitions. Word has length 12 [2024-11-27 23:20:10,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:10,771 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 83 transitions. [2024-11-27 23:20:10,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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) [2024-11-27 23:20:10,772 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 83 transitions. [2024-11-27 23:20:10,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-27 23:20:10,772 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:10,772 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:10,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-27 23:20:10,773 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:20:10,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:10,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1470398312, now seen corresponding path program 1 times [2024-11-27 23:20:10,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:10,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556376929] [2024-11-27 23:20:10,774 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:10,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:10,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:11,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:11,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:11,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556376929] [2024-11-27 23:20:11,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556376929] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:20:11,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:20:11,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:20:11,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044941840] [2024-11-27 23:20:11,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:20:11,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:20:11,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:11,037 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:20:11,038 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:20:11,038 INFO L87 Difference]: Start difference. First operand 69 states and 83 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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) [2024-11-27 23:20:11,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:11,146 INFO L93 Difference]: Finished difference Result 76 states and 90 transitions. [2024-11-27 23:20:11,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 23:20:11,147 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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) Word has length 12 [2024-11-27 23:20:11,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:11,147 INFO L225 Difference]: With dead ends: 76 [2024-11-27 23:20:11,147 INFO L226 Difference]: Without dead ends: 76 [2024-11-27 23:20:11,148 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:20:11,148 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 23 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:11,149 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 126 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:20:11,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-27 23:20:11,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 69. [2024-11-27 23:20:11,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 59 states have (on average 1.4067796610169492) internal successors, (83), 68 states have internal predecessors, (83), 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) [2024-11-27 23:20:11,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 83 transitions. [2024-11-27 23:20:11,153 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 83 transitions. Word has length 12 [2024-11-27 23:20:11,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:11,156 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 83 transitions. [2024-11-27 23:20:11,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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) [2024-11-27 23:20:11,156 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 83 transitions. [2024-11-27 23:20:11,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-27 23:20:11,157 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:11,157 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:11,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-27 23:20:11,157 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:20:11,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:11,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1335163988, now seen corresponding path program 1 times [2024-11-27 23:20:11,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:11,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259635999] [2024-11-27 23:20:11,158 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:11,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:11,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:11,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:11,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:11,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259635999] [2024-11-27 23:20:11,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259635999] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:20:11,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:20:11,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:20:11,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195806367] [2024-11-27 23:20:11,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:20:11,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:20:11,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:11,359 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:20:11,360 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:20:11,360 INFO L87 Difference]: Start difference. First operand 69 states and 83 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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) [2024-11-27 23:20:11,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:11,435 INFO L93 Difference]: Finished difference Result 80 states and 93 transitions. [2024-11-27 23:20:11,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:20:11,436 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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) Word has length 12 [2024-11-27 23:20:11,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:11,437 INFO L225 Difference]: With dead ends: 80 [2024-11-27 23:20:11,437 INFO L226 Difference]: Without dead ends: 80 [2024-11-27 23:20:11,438 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:20:11,438 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 7 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:11,439 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 126 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:20:11,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-27 23:20:11,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 65. [2024-11-27 23:20:11,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 55 states have (on average 1.4363636363636363) internal successors, (79), 64 states have internal predecessors, (79), 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) [2024-11-27 23:20:11,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 79 transitions. [2024-11-27 23:20:11,446 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 79 transitions. Word has length 12 [2024-11-27 23:20:11,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:11,447 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 79 transitions. [2024-11-27 23:20:11,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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) [2024-11-27 23:20:11,447 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 79 transitions. [2024-11-27 23:20:11,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-27 23:20:11,447 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:11,447 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:11,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-27 23:20:11,448 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:20:11,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:11,448 INFO L85 PathProgramCache]: Analyzing trace with hash -2144510614, now seen corresponding path program 1 times [2024-11-27 23:20:11,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:11,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885368763] [2024-11-27 23:20:11,448 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:11,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:11,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:11,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:11,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:11,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885368763] [2024-11-27 23:20:11,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885368763] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:20:11,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:20:11,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:20:11,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691997595] [2024-11-27 23:20:11,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:20:11,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:20:11,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:11,669 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:20:11,669 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:20:11,669 INFO L87 Difference]: Start difference. First operand 65 states and 79 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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) [2024-11-27 23:20:11,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:11,738 INFO L93 Difference]: Finished difference Result 64 states and 78 transitions. [2024-11-27 23:20:11,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:20:11,738 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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) Word has length 12 [2024-11-27 23:20:11,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:11,739 INFO L225 Difference]: With dead ends: 64 [2024-11-27 23:20:11,739 INFO L226 Difference]: Without dead ends: 64 [2024-11-27 23:20:11,739 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:20:11,740 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 11 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:11,740 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 76 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:20:11,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-27 23:20:11,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2024-11-27 23:20:11,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 52 states have (on average 1.4423076923076923) internal successors, (75), 60 states have internal predecessors, (75), 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) [2024-11-27 23:20:11,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 75 transitions. [2024-11-27 23:20:11,744 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 75 transitions. Word has length 12 [2024-11-27 23:20:11,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:11,744 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 75 transitions. [2024-11-27 23:20:11,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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) [2024-11-27 23:20:11,744 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 75 transitions. [2024-11-27 23:20:11,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-27 23:20:11,745 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:11,745 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:11,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-27 23:20:11,746 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:20:11,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:11,746 INFO L85 PathProgramCache]: Analyzing trace with hash 242074378, now seen corresponding path program 1 times [2024-11-27 23:20:11,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:11,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971702138] [2024-11-27 23:20:11,747 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:11,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:11,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:12,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:12,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:12,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971702138] [2024-11-27 23:20:12,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971702138] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:20:12,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577909212] [2024-11-27 23:20:12,069 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:12,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:20:12,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:20:12,072 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:20:12,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 23:20:12,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:12,159 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-27 23:20:12,171 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:20:12,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 23:20:12,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2024-11-27 23:20:12,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 8 [2024-11-27 23:20:12,662 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:12,663 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:20:12,947 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 23:20:13,020 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:13,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577909212] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:20:13,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:20:13,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 18 [2024-11-27 23:20:13,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170267562] [2024-11-27 23:20:13,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:20:13,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-27 23:20:13,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:13,021 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-27 23:20:13,022 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2024-11-27 23:20:13,022 INFO L87 Difference]: Start difference. First operand 61 states and 75 transitions. Second operand has 19 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 19 states have internal predecessors, (37), 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) [2024-11-27 23:20:13,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:13,471 INFO L93 Difference]: Finished difference Result 64 states and 79 transitions. [2024-11-27 23:20:13,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 23:20:13,471 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 19 states have internal predecessors, (37), 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) Word has length 13 [2024-11-27 23:20:13,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:13,472 INFO L225 Difference]: With dead ends: 64 [2024-11-27 23:20:13,472 INFO L226 Difference]: Without dead ends: 64 [2024-11-27 23:20:13,473 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2024-11-27 23:20:13,473 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 34 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:13,473 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 235 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:20:13,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-27 23:20:13,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 54. [2024-11-27 23:20:13,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 46 states have (on average 1.4130434782608696) internal successors, (65), 53 states have internal predecessors, (65), 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) [2024-11-27 23:20:13,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2024-11-27 23:20:13,477 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 13 [2024-11-27 23:20:13,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:13,477 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions. [2024-11-27 23:20:13,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 19 states have internal predecessors, (37), 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) [2024-11-27 23:20:13,477 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions. [2024-11-27 23:20:13,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-27 23:20:13,478 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:13,478 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:13,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-27 23:20:13,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-27 23:20:13,683 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:20:13,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:13,684 INFO L85 PathProgramCache]: Analyzing trace with hash 401564717, now seen corresponding path program 1 times [2024-11-27 23:20:13,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:13,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466783698] [2024-11-27 23:20:13,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:13,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:13,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:13,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:13,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:13,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466783698] [2024-11-27 23:20:13,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466783698] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:20:13,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:20:13,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:20:13,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939276716] [2024-11-27 23:20:13,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:20:13,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:20:13,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:13,757 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:20:13,757 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:20:13,757 INFO L87 Difference]: Start difference. First operand 54 states and 65 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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) [2024-11-27 23:20:13,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:13,812 INFO L93 Difference]: Finished difference Result 53 states and 64 transitions. [2024-11-27 23:20:13,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:20:13,813 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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) Word has length 14 [2024-11-27 23:20:13,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:13,813 INFO L225 Difference]: With dead ends: 53 [2024-11-27 23:20:13,814 INFO L226 Difference]: Without dead ends: 53 [2024-11-27 23:20:13,814 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:20:13,814 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 25 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:13,816 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 56 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:20:13,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-27 23:20:13,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-11-27 23:20:13,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 46 states have (on average 1.391304347826087) internal successors, (64), 52 states have internal predecessors, (64), 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) [2024-11-27 23:20:13,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2024-11-27 23:20:13,819 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 14 [2024-11-27 23:20:13,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:13,819 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2024-11-27 23:20:13,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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) [2024-11-27 23:20:13,820 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2024-11-27 23:20:13,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-27 23:20:13,821 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:13,821 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:13,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-27 23:20:13,822 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:20:13,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:13,822 INFO L85 PathProgramCache]: Analyzing trace with hash 401564718, now seen corresponding path program 1 times [2024-11-27 23:20:13,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:13,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930992317] [2024-11-27 23:20:13,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:13,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:13,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:13,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:13,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:13,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930992317] [2024-11-27 23:20:13,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930992317] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:20:13,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:20:13,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:20:13,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461317316] [2024-11-27 23:20:13,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:20:13,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:20:13,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:13,993 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:20:13,993 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:20:13,993 INFO L87 Difference]: Start difference. First operand 53 states and 64 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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) [2024-11-27 23:20:14,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:14,092 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2024-11-27 23:20:14,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 23:20:14,093 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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) Word has length 14 [2024-11-27 23:20:14,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:14,093 INFO L225 Difference]: With dead ends: 60 [2024-11-27 23:20:14,094 INFO L226 Difference]: Without dead ends: 60 [2024-11-27 23:20:14,094 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:20:14,094 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 18 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:14,095 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 121 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:20:14,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-27 23:20:14,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2024-11-27 23:20:14,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 47 states have (on average 1.3829787234042554) internal successors, (65), 53 states have internal predecessors, (65), 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) [2024-11-27 23:20:14,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2024-11-27 23:20:14,098 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 14 [2024-11-27 23:20:14,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:14,098 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions. [2024-11-27 23:20:14,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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) [2024-11-27 23:20:14,098 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions. [2024-11-27 23:20:14,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-27 23:20:14,099 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:14,099 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:14,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-27 23:20:14,099 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:20:14,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:14,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1488851534, now seen corresponding path program 1 times [2024-11-27 23:20:14,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:14,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104827695] [2024-11-27 23:20:14,100 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:14,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:14,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:14,372 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:14,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:14,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104827695] [2024-11-27 23:20:14,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104827695] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:20:14,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916321875] [2024-11-27 23:20:14,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:14,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:20:14,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:20:14,377 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:20:14,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 23:20:14,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:14,462 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-27 23:20:14,464 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:20:14,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2024-11-27 23:20:15,000 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:15,001 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:20:15,462 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:15,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916321875] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:20:15,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:20:15,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2024-11-27 23:20:15,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918650664] [2024-11-27 23:20:15,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:20:15,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-27 23:20:15,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:15,463 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-27 23:20:15,464 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2024-11-27 23:20:15,464 INFO L87 Difference]: Start difference. First operand 54 states and 65 transitions. Second operand has 23 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 23 states have internal predecessors, (43), 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) [2024-11-27 23:20:15,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:15,898 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2024-11-27 23:20:15,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 23:20:15,898 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 23 states have internal predecessors, (43), 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) Word has length 15 [2024-11-27 23:20:15,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:15,899 INFO L225 Difference]: With dead ends: 56 [2024-11-27 23:20:15,899 INFO L226 Difference]: Without dead ends: 56 [2024-11-27 23:20:15,899 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=163, Invalid=593, Unknown=0, NotChecked=0, Total=756 [2024-11-27 23:20:15,900 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 32 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:15,900 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 271 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:20:15,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-27 23:20:15,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2024-11-27 23:20:15,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 44 states have (on average 1.3636363636363635) internal successors, (60), 49 states have internal predecessors, (60), 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) [2024-11-27 23:20:15,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2024-11-27 23:20:15,905 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 15 [2024-11-27 23:20:15,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:15,905 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2024-11-27 23:20:15,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 23 states have internal predecessors, (43), 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) [2024-11-27 23:20:15,905 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2024-11-27 23:20:15,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-27 23:20:15,906 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:15,906 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:15,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-27 23:20:16,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:20:16,107 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:20:16,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:16,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1530611578, now seen corresponding path program 1 times [2024-11-27 23:20:16,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:16,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890576230] [2024-11-27 23:20:16,108 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:16,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:16,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:16,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:16,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:16,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890576230] [2024-11-27 23:20:16,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890576230] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:20:16,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037922394] [2024-11-27 23:20:16,488 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:16,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:20:16,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:20:16,490 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:20:16,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 23:20:16,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:16,577 INFO L256 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-27 23:20:16,579 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:20:16,614 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 [2024-11-27 23:20:16,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:16,667 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:20:16,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037922394] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:20:16,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:20:16,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2024-11-27 23:20:16,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755180683] [2024-11-27 23:20:16,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:20:16,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:20:16,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:16,670 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:20:16,670 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:20:16,671 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) [2024-11-27 23:20:16,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:16,743 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2024-11-27 23:20:16,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:20:16,744 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) Word has length 17 [2024-11-27 23:20:16,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:16,744 INFO L225 Difference]: With dead ends: 61 [2024-11-27 23:20:16,744 INFO L226 Difference]: Without dead ends: 61 [2024-11-27 23:20:16,744 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-27 23:20:16,745 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 6 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:16,745 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 157 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:20:16,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-27 23:20:16,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2024-11-27 23:20:16,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 54 states have (on average 1.2962962962962963) internal successors, (70), 59 states have internal predecessors, (70), 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) [2024-11-27 23:20:16,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 70 transitions. [2024-11-27 23:20:16,749 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 70 transitions. Word has length 17 [2024-11-27 23:20:16,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:16,749 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 70 transitions. [2024-11-27 23:20:16,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) [2024-11-27 23:20:16,749 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 70 transitions. [2024-11-27 23:20:16,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-27 23:20:16,749 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:16,750 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:16,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-27 23:20:16,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:20:16,951 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:20:16,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:16,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1530613701, now seen corresponding path program 1 times [2024-11-27 23:20:16,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:16,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325934039] [2024-11-27 23:20:16,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:16,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:16,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:17,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:17,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:17,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325934039] [2024-11-27 23:20:17,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325934039] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:20:17,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:20:17,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:20:17,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603191445] [2024-11-27 23:20:17,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:20:17,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:20:17,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:17,031 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:20:17,031 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:20:17,031 INFO L87 Difference]: Start difference. First operand 60 states and 70 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 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) [2024-11-27 23:20:17,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:17,094 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2024-11-27 23:20:17,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:20:17,098 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 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) Word has length 17 [2024-11-27 23:20:17,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:17,098 INFO L225 Difference]: With dead ends: 59 [2024-11-27 23:20:17,098 INFO L226 Difference]: Without dead ends: 59 [2024-11-27 23:20:17,099 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:20:17,100 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 23 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:17,100 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 80 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:20:17,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-27 23:20:17,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2024-11-27 23:20:17,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 54 states have (on average 1.2777777777777777) internal successors, (69), 58 states have internal predecessors, (69), 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) [2024-11-27 23:20:17,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2024-11-27 23:20:17,103 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 17 [2024-11-27 23:20:17,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:17,104 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2024-11-27 23:20:17,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 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) [2024-11-27 23:20:17,104 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2024-11-27 23:20:17,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-27 23:20:17,104 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:17,105 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:17,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-27 23:20:17,105 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:20:17,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:17,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1530613702, now seen corresponding path program 1 times [2024-11-27 23:20:17,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:17,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579036825] [2024-11-27 23:20:17,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:17,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:17,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:17,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:17,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:17,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579036825] [2024-11-27 23:20:17,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579036825] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:20:17,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:20:17,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 23:20:17,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990107151] [2024-11-27 23:20:17,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:20:17,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:20:17,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:17,274 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:20:17,274 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:20:17,275 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 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) [2024-11-27 23:20:17,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:17,383 INFO L93 Difference]: Finished difference Result 78 states and 91 transitions. [2024-11-27 23:20:17,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:20:17,384 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 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) Word has length 17 [2024-11-27 23:20:17,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:17,385 INFO L225 Difference]: With dead ends: 78 [2024-11-27 23:20:17,385 INFO L226 Difference]: Without dead ends: 78 [2024-11-27 23:20:17,386 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:20:17,386 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 32 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:17,387 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 133 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:20:17,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-27 23:20:17,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 61. [2024-11-27 23:20:17,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 56 states have (on average 1.2678571428571428) internal successors, (71), 60 states have internal predecessors, (71), 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) [2024-11-27 23:20:17,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 71 transitions. [2024-11-27 23:20:17,390 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 71 transitions. Word has length 17 [2024-11-27 23:20:17,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:17,390 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 71 transitions. [2024-11-27 23:20:17,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 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) [2024-11-27 23:20:17,390 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 71 transitions. [2024-11-27 23:20:17,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-27 23:20:17,391 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:17,391 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:17,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-27 23:20:17,391 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:20:17,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:17,392 INFO L85 PathProgramCache]: Analyzing trace with hash 943805564, now seen corresponding path program 1 times [2024-11-27 23:20:17,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:17,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214220771] [2024-11-27 23:20:17,392 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:17,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:17,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:17,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:17,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:17,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214220771] [2024-11-27 23:20:17,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214220771] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:20:17,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364513792] [2024-11-27 23:20:17,668 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:17,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:20:17,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:20:17,670 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:20:17,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 23:20:17,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:17,750 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-27 23:20:17,752 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:20:17,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-27 23:20:17,795 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 14 treesize of output 10 [2024-11-27 23:20:17,923 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 23:20:17,924 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 18 treesize of output 19 [2024-11-27 23:20:18,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:18,051 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:20:18,316 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 13 treesize of output 11 [2024-11-27 23:20:18,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 20 [2024-11-27 23:20:18,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:18,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364513792] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:20:18,412 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:20:18,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 18 [2024-11-27 23:20:18,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858999339] [2024-11-27 23:20:18,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:20:18,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-27 23:20:18,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:18,414 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-27 23:20:18,414 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2024-11-27 23:20:18,414 INFO L87 Difference]: Start difference. First operand 61 states and 71 transitions. Second operand has 19 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 19 states have internal predecessors, (42), 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) [2024-11-27 23:20:18,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:18,974 INFO L93 Difference]: Finished difference Result 94 states and 108 transitions. [2024-11-27 23:20:18,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-27 23:20:18,975 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 19 states have internal predecessors, (42), 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) Word has length 17 [2024-11-27 23:20:18,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:18,976 INFO L225 Difference]: With dead ends: 94 [2024-11-27 23:20:18,976 INFO L226 Difference]: Without dead ends: 94 [2024-11-27 23:20:18,976 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=113, Invalid=537, Unknown=0, NotChecked=0, Total=650 [2024-11-27 23:20:18,978 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 43 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:18,978 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 319 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 23:20:18,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-27 23:20:18,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 64. [2024-11-27 23:20:18,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 59 states have (on average 1.271186440677966) internal successors, (75), 63 states have internal predecessors, (75), 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) [2024-11-27 23:20:18,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2024-11-27 23:20:18,983 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 17 [2024-11-27 23:20:18,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:18,983 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2024-11-27 23:20:18,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 19 states have internal predecessors, (42), 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) [2024-11-27 23:20:18,983 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2024-11-27 23:20:18,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-27 23:20:18,984 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:18,984 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:18,996 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 23:20:19,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:20:19,185 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:20:19,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:19,185 INFO L85 PathProgramCache]: Analyzing trace with hash 204384536, now seen corresponding path program 1 times [2024-11-27 23:20:19,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:19,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669709098] [2024-11-27 23:20:19,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:19,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:19,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:19,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:19,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:19,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669709098] [2024-11-27 23:20:19,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669709098] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:20:19,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:20:19,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:20:19,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303856751] [2024-11-27 23:20:19,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:20:19,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:20:19,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:19,235 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:20:19,235 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:20:19,235 INFO L87 Difference]: Start difference. First operand 64 states and 75 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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) [2024-11-27 23:20:19,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:19,293 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2024-11-27 23:20:19,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:20:19,293 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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) Word has length 18 [2024-11-27 23:20:19,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:19,294 INFO L225 Difference]: With dead ends: 63 [2024-11-27 23:20:19,294 INFO L226 Difference]: Without dead ends: 63 [2024-11-27 23:20:19,294 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:20:19,295 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 9 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:19,295 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 67 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:20:19,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-27 23:20:19,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-11-27 23:20:19,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 59 states have (on average 1.2542372881355932) internal successors, (74), 62 states have internal predecessors, (74), 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) [2024-11-27 23:20:19,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 74 transitions. [2024-11-27 23:20:19,298 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 74 transitions. Word has length 18 [2024-11-27 23:20:19,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:19,299 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 74 transitions. [2024-11-27 23:20:19,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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) [2024-11-27 23:20:19,299 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 74 transitions. [2024-11-27 23:20:19,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-27 23:20:19,299 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:19,300 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:19,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-27 23:20:19,300 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:20:19,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:19,301 INFO L85 PathProgramCache]: Analyzing trace with hash 204384537, now seen corresponding path program 1 times [2024-11-27 23:20:19,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:19,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741116836] [2024-11-27 23:20:19,301 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:19,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:19,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:19,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:19,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:19,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741116836] [2024-11-27 23:20:19,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741116836] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:20:19,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:20:19,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 23:20:19,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136091945] [2024-11-27 23:20:19,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:20:19,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:20:19,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:19,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:20:19,521 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:20:19,521 INFO L87 Difference]: Start difference. First operand 63 states and 74 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 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) [2024-11-27 23:20:19,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:19,641 INFO L93 Difference]: Finished difference Result 72 states and 84 transitions. [2024-11-27 23:20:19,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:20:19,641 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 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) Word has length 18 [2024-11-27 23:20:19,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:19,642 INFO L225 Difference]: With dead ends: 72 [2024-11-27 23:20:19,642 INFO L226 Difference]: Without dead ends: 72 [2024-11-27 23:20:19,642 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:20:19,643 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 15 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:19,643 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 127 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:20:19,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-27 23:20:19,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 66. [2024-11-27 23:20:19,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 62 states have (on average 1.2419354838709677) internal successors, (77), 65 states have internal predecessors, (77), 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) [2024-11-27 23:20:19,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 77 transitions. [2024-11-27 23:20:19,646 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 77 transitions. Word has length 18 [2024-11-27 23:20:19,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:19,647 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 77 transitions. [2024-11-27 23:20:19,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 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) [2024-11-27 23:20:19,647 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 77 transitions. [2024-11-27 23:20:19,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-27 23:20:19,647 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:19,647 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:19,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-27 23:20:19,647 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:20:19,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:19,648 INFO L85 PathProgramCache]: Analyzing trace with hash 2055654508, now seen corresponding path program 2 times [2024-11-27 23:20:19,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:19,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807628286] [2024-11-27 23:20:19,649 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:20:19,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:19,669 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:20:19,669 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:20:19,873 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 23:20:19,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:19,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807628286] [2024-11-27 23:20:19,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807628286] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:20:19,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:20:19,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 23:20:19,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861859359] [2024-11-27 23:20:19,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:20:19,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 23:20:19,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:19,875 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 23:20:19,875 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:20:19,875 INFO L87 Difference]: Start difference. First operand 66 states and 77 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 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) [2024-11-27 23:20:20,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:20,027 INFO L93 Difference]: Finished difference Result 83 states and 94 transitions. [2024-11-27 23:20:20,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 23:20:20,028 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 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) Word has length 20 [2024-11-27 23:20:20,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:20,029 INFO L225 Difference]: With dead ends: 83 [2024-11-27 23:20:20,029 INFO L226 Difference]: Without dead ends: 83 [2024-11-27 23:20:20,029 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-27 23:20:20,030 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 26 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:20,030 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 189 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:20:20,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-27 23:20:20,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 62. [2024-11-27 23:20:20,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 58 states have (on average 1.2586206896551724) internal successors, (73), 61 states have internal predecessors, (73), 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) [2024-11-27 23:20:20,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 73 transitions. [2024-11-27 23:20:20,036 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 73 transitions. Word has length 20 [2024-11-27 23:20:20,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:20,036 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 73 transitions. [2024-11-27 23:20:20,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 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) [2024-11-27 23:20:20,036 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 73 transitions. [2024-11-27 23:20:20,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-27 23:20:20,037 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:20,037 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:20,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-27 23:20:20,037 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:20:20,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:20,038 INFO L85 PathProgramCache]: Analyzing trace with hash 467306606, now seen corresponding path program 1 times [2024-11-27 23:20:20,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:20,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348333654] [2024-11-27 23:20:20,038 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:20,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:20,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:20,282 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 23:20:20,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:20,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348333654] [2024-11-27 23:20:20,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348333654] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:20:20,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:20:20,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 23:20:20,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979439192] [2024-11-27 23:20:20,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:20:20,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 23:20:20,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:20,284 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 23:20:20,284 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:20:20,284 INFO L87 Difference]: Start difference. First operand 62 states and 73 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 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) [2024-11-27 23:20:20,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:20,372 INFO L93 Difference]: Finished difference Result 73 states and 85 transitions. [2024-11-27 23:20:20,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 23:20:20,373 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 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) Word has length 20 [2024-11-27 23:20:20,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:20,374 INFO L225 Difference]: With dead ends: 73 [2024-11-27 23:20:20,374 INFO L226 Difference]: Without dead ends: 73 [2024-11-27 23:20:20,374 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:20:20,375 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 29 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:20,375 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 176 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:20:20,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-27 23:20:20,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 63. [2024-11-27 23:20:20,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 59 states have (on average 1.271186440677966) internal successors, (75), 62 states have internal predecessors, (75), 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) [2024-11-27 23:20:20,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 75 transitions. [2024-11-27 23:20:20,381 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 75 transitions. Word has length 20 [2024-11-27 23:20:20,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:20,381 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 75 transitions. [2024-11-27 23:20:20,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 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) [2024-11-27 23:20:20,381 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 75 transitions. [2024-11-27 23:20:20,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-27 23:20:20,382 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:20,382 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:20,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-27 23:20:20,382 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:20:20,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:20,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1443848500, now seen corresponding path program 1 times [2024-11-27 23:20:20,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:20,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663874126] [2024-11-27 23:20:20,383 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:20,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:20,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:20,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:20,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:20,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663874126] [2024-11-27 23:20:20,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663874126] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:20:20,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:20:20,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 23:20:20,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118020046] [2024-11-27 23:20:20,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:20:20,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 23:20:20,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:20,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 23:20:20,616 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:20:20,616 INFO L87 Difference]: Start difference. First operand 63 states and 75 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 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) [2024-11-27 23:20:20,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:20,694 INFO L93 Difference]: Finished difference Result 100 states and 117 transitions. [2024-11-27 23:20:20,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:20:20,695 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 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) Word has length 21 [2024-11-27 23:20:20,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:20,696 INFO L225 Difference]: With dead ends: 100 [2024-11-27 23:20:20,696 INFO L226 Difference]: Without dead ends: 100 [2024-11-27 23:20:20,697 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:20:20,697 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 10 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:20,701 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 204 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:20:20,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-27 23:20:20,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 98. [2024-11-27 23:20:20,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 94 states have (on average 1.2446808510638299) internal successors, (117), 97 states have internal predecessors, (117), 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) [2024-11-27 23:20:20,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 117 transitions. [2024-11-27 23:20:20,709 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 117 transitions. Word has length 21 [2024-11-27 23:20:20,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:20,709 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 117 transitions. [2024-11-27 23:20:20,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 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) [2024-11-27 23:20:20,710 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 117 transitions. [2024-11-27 23:20:20,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-27 23:20:20,710 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:20,710 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:20,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-27 23:20:20,710 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:20:20,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:20,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1162175054, now seen corresponding path program 1 times [2024-11-27 23:20:20,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:20,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464526] [2024-11-27 23:20:20,711 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:20,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:20,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:20,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:20,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:20,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464526] [2024-11-27 23:20:20,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464526] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:20:20,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:20:20,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 23:20:20,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727351348] [2024-11-27 23:20:20,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:20:20,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 23:20:20,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:20,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 23:20:20,988 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:20:20,988 INFO L87 Difference]: Start difference. First operand 98 states and 117 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 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) [2024-11-27 23:20:21,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:21,104 INFO L93 Difference]: Finished difference Result 124 states and 143 transitions. [2024-11-27 23:20:21,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 23:20:21,105 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 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) Word has length 21 [2024-11-27 23:20:21,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:21,106 INFO L225 Difference]: With dead ends: 124 [2024-11-27 23:20:21,106 INFO L226 Difference]: Without dead ends: 124 [2024-11-27 23:20:21,106 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:20:21,107 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 18 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:21,108 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 198 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:20:21,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-27 23:20:21,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 95. [2024-11-27 23:20:21,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 91 states have (on average 1.2417582417582418) internal successors, (113), 94 states have internal predecessors, (113), 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) [2024-11-27 23:20:21,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 113 transitions. [2024-11-27 23:20:21,112 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 113 transitions. Word has length 21 [2024-11-27 23:20:21,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:21,113 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 113 transitions. [2024-11-27 23:20:21,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 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) [2024-11-27 23:20:21,113 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 113 transitions. [2024-11-27 23:20:21,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-27 23:20:21,114 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:21,114 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:21,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-27 23:20:21,115 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:20:21,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:21,116 INFO L85 PathProgramCache]: Analyzing trace with hash -831969652, now seen corresponding path program 1 times [2024-11-27 23:20:21,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:21,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171791745] [2024-11-27 23:20:21,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:21,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:21,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:21,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:21,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:21,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171791745] [2024-11-27 23:20:21,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171791745] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:20:21,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:20:21,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 23:20:21,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004116192] [2024-11-27 23:20:21,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:20:21,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 23:20:21,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:21,372 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 23:20:21,373 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:20:21,373 INFO L87 Difference]: Start difference. First operand 95 states and 113 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 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) [2024-11-27 23:20:21,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:21,463 INFO L93 Difference]: Finished difference Result 137 states and 161 transitions. [2024-11-27 23:20:21,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 23:20:21,464 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 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) Word has length 21 [2024-11-27 23:20:21,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:21,464 INFO L225 Difference]: With dead ends: 137 [2024-11-27 23:20:21,465 INFO L226 Difference]: Without dead ends: 137 [2024-11-27 23:20:21,465 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:20:21,465 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 29 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:21,465 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 182 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:20:21,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-11-27 23:20:21,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 97. [2024-11-27 23:20:21,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 93 states have (on average 1.2580645161290323) internal successors, (117), 96 states have internal predecessors, (117), 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) [2024-11-27 23:20:21,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 117 transitions. [2024-11-27 23:20:21,469 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 117 transitions. Word has length 21 [2024-11-27 23:20:21,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:21,469 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 117 transitions. [2024-11-27 23:20:21,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 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) [2024-11-27 23:20:21,470 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 117 transitions. [2024-11-27 23:20:21,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-27 23:20:21,470 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:21,470 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:21,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-27 23:20:21,471 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:20:21,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:21,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1809555010, now seen corresponding path program 1 times [2024-11-27 23:20:21,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:21,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992325993] [2024-11-27 23:20:21,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:21,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:21,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:21,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:21,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:21,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992325993] [2024-11-27 23:20:21,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992325993] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:20:21,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:20:21,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:20:21,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122773538] [2024-11-27 23:20:21,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:20:21,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:20:21,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:21,619 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:20:21,619 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:20:21,620 INFO L87 Difference]: Start difference. First operand 97 states and 117 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 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) [2024-11-27 23:20:21,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:21,648 INFO L93 Difference]: Finished difference Result 96 states and 116 transitions. [2024-11-27 23:20:21,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:20:21,648 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 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) Word has length 22 [2024-11-27 23:20:21,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:21,649 INFO L225 Difference]: With dead ends: 96 [2024-11-27 23:20:21,649 INFO L226 Difference]: Without dead ends: 78 [2024-11-27 23:20:21,649 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:20:21,650 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 17 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:21,650 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 56 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:20:21,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-27 23:20:21,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-11-27 23:20:21,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 75 states have (on average 1.2) internal successors, (90), 77 states have internal predecessors, (90), 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) [2024-11-27 23:20:21,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 90 transitions. [2024-11-27 23:20:21,655 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 90 transitions. Word has length 22 [2024-11-27 23:20:21,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:21,655 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 90 transitions. [2024-11-27 23:20:21,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 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) [2024-11-27 23:20:21,656 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 90 transitions. [2024-11-27 23:20:21,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-27 23:20:21,656 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:21,656 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:21,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-27 23:20:21,656 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:20:21,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:21,657 INFO L85 PathProgramCache]: Analyzing trace with hash -522705835, now seen corresponding path program 1 times [2024-11-27 23:20:21,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:21,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189062727] [2024-11-27 23:20:21,657 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:21,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:21,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:22,007 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:22,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:22,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189062727] [2024-11-27 23:20:22,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189062727] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:20:22,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636461384] [2024-11-27 23:20:22,008 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:22,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:20:22,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:20:22,012 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:20:22,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 23:20:22,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:22,096 INFO L256 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-27 23:20:22,098 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:20:22,186 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 13 treesize of output 9 [2024-11-27 23:20:22,271 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:22,271 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:20:22,287 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 13 [2024-11-27 23:20:22,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-27 23:20:22,371 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:22,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636461384] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:20:22,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:20:22,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 22 [2024-11-27 23:20:22,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255434002] [2024-11-27 23:20:22,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:20:22,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-27 23:20:22,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:22,373 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-27 23:20:22,373 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2024-11-27 23:20:22,373 INFO L87 Difference]: Start difference. First operand 78 states and 90 transitions. Second operand has 22 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 22 states have internal predecessors, (52), 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) [2024-11-27 23:20:23,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:23,032 INFO L93 Difference]: Finished difference Result 143 states and 162 transitions. [2024-11-27 23:20:23,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-27 23:20:23,032 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 22 states have internal predecessors, (52), 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) Word has length 24 [2024-11-27 23:20:23,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:23,033 INFO L225 Difference]: With dead ends: 143 [2024-11-27 23:20:23,033 INFO L226 Difference]: Without dead ends: 143 [2024-11-27 23:20:23,034 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=132, Invalid=860, Unknown=0, NotChecked=0, Total=992 [2024-11-27 23:20:23,034 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 71 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:23,034 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 401 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 23:20:23,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-27 23:20:23,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 110. [2024-11-27 23:20:23,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 107 states have (on average 1.1869158878504673) internal successors, (127), 109 states have internal predecessors, (127), 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) [2024-11-27 23:20:23,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 127 transitions. [2024-11-27 23:20:23,039 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 127 transitions. Word has length 24 [2024-11-27 23:20:23,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:23,039 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 127 transitions. [2024-11-27 23:20:23,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 22 states have internal predecessors, (52), 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) [2024-11-27 23:20:23,039 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 127 transitions. [2024-11-27 23:20:23,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-27 23:20:23,040 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:23,040 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:23,049 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-27 23:20:23,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:20:23,241 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:20:23,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:23,242 INFO L85 PathProgramCache]: Analyzing trace with hash 976054174, now seen corresponding path program 1 times [2024-11-27 23:20:23,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:23,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406682770] [2024-11-27 23:20:23,242 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:23,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:23,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:23,475 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:23,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:23,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406682770] [2024-11-27 23:20:23,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406682770] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:20:23,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725015821] [2024-11-27 23:20:23,476 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:23,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:20:23,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:20:23,478 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:20:23,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 23:20:23,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:23,572 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-27 23:20:23,575 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:20:23,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-27 23:20:23,694 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:23,694 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:20:23,929 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:23,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725015821] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:20:23,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:20:23,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 21 [2024-11-27 23:20:23,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710888750] [2024-11-27 23:20:23,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:20:23,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-27 23:20:23,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:23,931 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-27 23:20:23,931 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2024-11-27 23:20:23,931 INFO L87 Difference]: Start difference. First operand 110 states and 127 transitions. Second operand has 22 states, 21 states have (on average 2.761904761904762) internal successors, (58), 22 states have internal predecessors, (58), 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) [2024-11-27 23:20:24,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:24,188 INFO L93 Difference]: Finished difference Result 124 states and 139 transitions. [2024-11-27 23:20:24,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-27 23:20:24,190 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.761904761904762) internal successors, (58), 22 states have internal predecessors, (58), 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) Word has length 25 [2024-11-27 23:20:24,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:24,191 INFO L225 Difference]: With dead ends: 124 [2024-11-27 23:20:24,191 INFO L226 Difference]: Without dead ends: 109 [2024-11-27 23:20:24,191 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=464, Unknown=0, NotChecked=0, Total=552 [2024-11-27 23:20:24,192 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 34 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:24,192 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 196 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:20:24,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-27 23:20:24,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 100. [2024-11-27 23:20:24,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 97 states have (on average 1.1855670103092784) internal successors, (115), 99 states have internal predecessors, (115), 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) [2024-11-27 23:20:24,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 115 transitions. [2024-11-27 23:20:24,202 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 115 transitions. Word has length 25 [2024-11-27 23:20:24,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:24,203 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 115 transitions. [2024-11-27 23:20:24,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.761904761904762) internal successors, (58), 22 states have internal predecessors, (58), 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) [2024-11-27 23:20:24,203 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 115 transitions. [2024-11-27 23:20:24,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-27 23:20:24,203 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:24,203 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:24,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-27 23:20:24,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-27 23:20:24,404 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:20:24,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:24,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1118850245, now seen corresponding path program 1 times [2024-11-27 23:20:24,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:24,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192312282] [2024-11-27 23:20:24,405 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:24,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:24,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:24,672 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:24,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:24,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192312282] [2024-11-27 23:20:24,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192312282] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:20:24,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219096583] [2024-11-27 23:20:24,673 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:24,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:20:24,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:20:24,675 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:20:24,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 23:20:24,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:24,771 INFO L256 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-27 23:20:24,773 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:20:24,904 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:24,904 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:20:25,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2024-11-27 23:20:25,140 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:25,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219096583] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:20:25,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:20:25,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2024-11-27 23:20:25,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857153162] [2024-11-27 23:20:25,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:20:25,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-27 23:20:25,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:25,143 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-27 23:20:25,143 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2024-11-27 23:20:25,143 INFO L87 Difference]: Start difference. First operand 100 states and 115 transitions. Second operand has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 20 states have internal predecessors, (52), 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) [2024-11-27 23:20:25,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:25,435 INFO L93 Difference]: Finished difference Result 111 states and 124 transitions. [2024-11-27 23:20:25,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 23:20:25,436 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 20 states have internal predecessors, (52), 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) Word has length 25 [2024-11-27 23:20:25,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:25,436 INFO L225 Difference]: With dead ends: 111 [2024-11-27 23:20:25,437 INFO L226 Difference]: Without dead ends: 111 [2024-11-27 23:20:25,437 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2024-11-27 23:20:25,438 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 17 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:25,438 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 303 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:20:25,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-27 23:20:25,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 104. [2024-11-27 23:20:25,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 101 states have (on average 1.1683168316831682) internal successors, (118), 103 states have internal predecessors, (118), 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) [2024-11-27 23:20:25,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 118 transitions. [2024-11-27 23:20:25,442 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 118 transitions. Word has length 25 [2024-11-27 23:20:25,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:25,443 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 118 transitions. [2024-11-27 23:20:25,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 20 states have internal predecessors, (52), 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) [2024-11-27 23:20:25,443 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 118 transitions. [2024-11-27 23:20:25,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-27 23:20:25,443 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:25,443 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, 1, 1, 1, 1] [2024-11-27 23:20:25,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-27 23:20:25,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:20:25,644 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:20:25,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:25,645 INFO L85 PathProgramCache]: Analyzing trace with hash 324619258, now seen corresponding path program 1 times [2024-11-27 23:20:25,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:25,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151308947] [2024-11-27 23:20:25,646 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:25,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:25,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:26,087 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:26,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:26,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151308947] [2024-11-27 23:20:26,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151308947] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:20:26,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492691674] [2024-11-27 23:20:26,088 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:26,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:20:26,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:20:26,090 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:20:26,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 23:20:26,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:26,209 INFO L256 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-27 23:20:26,211 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:20:26,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-27 23:20:26,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2024-11-27 23:20:26,949 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 23:20:26,949 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:20:27,525 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 23:20:27,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492691674] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:20:27,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:20:27,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 29 [2024-11-27 23:20:27,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621359490] [2024-11-27 23:20:27,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:20:27,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-27 23:20:27,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:27,527 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-27 23:20:27,528 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=768, Unknown=0, NotChecked=0, Total=870 [2024-11-27 23:20:27,528 INFO L87 Difference]: Start difference. First operand 104 states and 118 transitions. Second operand has 30 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 30 states have internal predecessors, (76), 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) [2024-11-27 23:20:28,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:28,472 INFO L93 Difference]: Finished difference Result 130 states and 144 transitions. [2024-11-27 23:20:28,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-27 23:20:28,473 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 30 states have internal predecessors, (76), 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) Word has length 26 [2024-11-27 23:20:28,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:28,473 INFO L225 Difference]: With dead ends: 130 [2024-11-27 23:20:28,474 INFO L226 Difference]: Without dead ends: 130 [2024-11-27 23:20:28,475 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=173, Invalid=1309, Unknown=0, NotChecked=0, Total=1482 [2024-11-27 23:20:28,475 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 43 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:28,475 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 308 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 23:20:28,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-27 23:20:28,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 116. [2024-11-27 23:20:28,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 113 states have (on average 1.1592920353982301) internal successors, (131), 115 states have internal predecessors, (131), 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) [2024-11-27 23:20:28,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 131 transitions. [2024-11-27 23:20:28,480 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 131 transitions. Word has length 26 [2024-11-27 23:20:28,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:28,480 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 131 transitions. [2024-11-27 23:20:28,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 30 states have internal predecessors, (76), 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) [2024-11-27 23:20:28,480 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 131 transitions. [2024-11-27 23:20:28,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-27 23:20:28,481 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:28,481 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:28,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-27 23:20:28,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:20:28,682 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:20:28,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:28,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1534000053, now seen corresponding path program 2 times [2024-11-27 23:20:28,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:28,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029378005] [2024-11-27 23:20:28,683 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:20:28,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:28,718 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:20:28,719 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:20:29,170 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:29,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:29,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029378005] [2024-11-27 23:20:29,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029378005] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:20:29,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039231278] [2024-11-27 23:20:29,171 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:20:29,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:20:29,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:20:29,174 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:20:29,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 23:20:29,294 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:20:29,294 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:20:29,296 INFO L256 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-27 23:20:29,298 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:20:29,385 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 13 treesize of output 9 [2024-11-27 23:20:29,449 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:29,449 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:20:29,480 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 13 [2024-11-27 23:20:29,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-27 23:20:29,558 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:29,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039231278] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:20:29,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:20:29,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 20 [2024-11-27 23:20:29,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402443935] [2024-11-27 23:20:29,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:20:29,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-27 23:20:29,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:29,560 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-27 23:20:29,560 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2024-11-27 23:20:29,560 INFO L87 Difference]: Start difference. First operand 116 states and 131 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 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) [2024-11-27 23:20:29,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:29,756 INFO L93 Difference]: Finished difference Result 196 states and 218 transitions. [2024-11-27 23:20:29,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-27 23:20:29,757 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 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) Word has length 29 [2024-11-27 23:20:29,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:29,757 INFO L225 Difference]: With dead ends: 196 [2024-11-27 23:20:29,758 INFO L226 Difference]: Without dead ends: 163 [2024-11-27 23:20:29,758 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2024-11-27 23:20:29,759 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 27 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:29,759 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 424 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:20:29,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-11-27 23:20:29,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 155. [2024-11-27 23:20:29,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 152 states have (on average 1.144736842105263) internal successors, (174), 154 states have internal predecessors, (174), 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) [2024-11-27 23:20:29,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 174 transitions. [2024-11-27 23:20:29,764 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 174 transitions. Word has length 29 [2024-11-27 23:20:29,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:29,764 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 174 transitions. [2024-11-27 23:20:29,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 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) [2024-11-27 23:20:29,765 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 174 transitions. [2024-11-27 23:20:29,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-27 23:20:29,765 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:29,765 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:29,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-27 23:20:29,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-27 23:20:29,970 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:20:29,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:29,971 INFO L85 PathProgramCache]: Analyzing trace with hash -2023111636, now seen corresponding path program 2 times [2024-11-27 23:20:29,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:29,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051757294] [2024-11-27 23:20:29,971 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:20:29,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:29,994 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:20:29,994 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:20:30,484 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:30,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:30,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051757294] [2024-11-27 23:20:30,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051757294] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:20:30,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761653232] [2024-11-27 23:20:30,485 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:20:30,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:20:30,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:20:30,489 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:20:30,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 23:20:30,606 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:20:30,606 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:20:30,608 INFO L256 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-27 23:20:30,611 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:20:30,746 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 13 treesize of output 9 [2024-11-27 23:20:30,912 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:30,913 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:20:30,949 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 13 [2024-11-27 23:20:30,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-27 23:20:31,060 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:31,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761653232] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:20:31,060 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:20:31,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 26 [2024-11-27 23:20:31,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48317568] [2024-11-27 23:20:31,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:20:31,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-27 23:20:31,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:31,063 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-27 23:20:31,063 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=588, Unknown=0, NotChecked=0, Total=650 [2024-11-27 23:20:31,063 INFO L87 Difference]: Start difference. First operand 155 states and 174 transitions. Second operand has 26 states, 26 states have (on average 2.5384615384615383) internal successors, (66), 26 states have internal predecessors, (66), 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) [2024-11-27 23:20:32,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:32,194 INFO L93 Difference]: Finished difference Result 267 states and 294 transitions. [2024-11-27 23:20:32,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-27 23:20:32,194 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.5384615384615383) internal successors, (66), 26 states have internal predecessors, (66), 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) Word has length 31 [2024-11-27 23:20:32,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:32,196 INFO L225 Difference]: With dead ends: 267 [2024-11-27 23:20:32,196 INFO L226 Difference]: Without dead ends: 255 [2024-11-27 23:20:32,197 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=147, Invalid=1335, Unknown=0, NotChecked=0, Total=1482 [2024-11-27 23:20:32,198 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 72 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:32,198 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 570 Invalid, 872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 23:20:32,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-11-27 23:20:32,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 200. [2024-11-27 23:20:32,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 197 states have (on average 1.1421319796954315) internal successors, (225), 199 states have internal predecessors, (225), 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) [2024-11-27 23:20:32,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 225 transitions. [2024-11-27 23:20:32,205 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 225 transitions. Word has length 31 [2024-11-27 23:20:32,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:32,205 INFO L471 AbstractCegarLoop]: Abstraction has 200 states and 225 transitions. [2024-11-27 23:20:32,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.5384615384615383) internal successors, (66), 26 states have internal predecessors, (66), 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) [2024-11-27 23:20:32,207 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 225 transitions. [2024-11-27 23:20:32,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-27 23:20:32,207 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:32,207 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:32,221 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-27 23:20:32,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-27 23:20:32,408 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:20:32,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:32,409 INFO L85 PathProgramCache]: Analyzing trace with hash 227467652, now seen corresponding path program 3 times [2024-11-27 23:20:32,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:32,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529402824] [2024-11-27 23:20:32,409 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:20:32,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:32,444 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-27 23:20:32,444 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:20:32,871 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:32,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:32,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529402824] [2024-11-27 23:20:32,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529402824] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:20:32,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577790729] [2024-11-27 23:20:32,871 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:20:32,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:20:32,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:20:32,874 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:20:32,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-27 23:20:33,009 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-27 23:20:33,010 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:20:33,012 INFO L256 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-27 23:20:33,015 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:20:33,236 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:33,236 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:20:33,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 21 treesize of output 17 [2024-11-27 23:20:33,600 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:33,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577790729] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:20:33,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:20:33,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 23 [2024-11-27 23:20:33,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098487415] [2024-11-27 23:20:33,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:20:33,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-27 23:20:33,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:33,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-27 23:20:33,604 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2024-11-27 23:20:33,605 INFO L87 Difference]: Start difference. First operand 200 states and 225 transitions. Second operand has 24 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 24 states have internal predecessors, (81), 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) [2024-11-27 23:20:34,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:34,010 INFO L93 Difference]: Finished difference Result 207 states and 230 transitions. [2024-11-27 23:20:34,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-27 23:20:34,011 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 24 states have internal predecessors, (81), 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) Word has length 33 [2024-11-27 23:20:34,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:34,012 INFO L225 Difference]: With dead ends: 207 [2024-11-27 23:20:34,012 INFO L226 Difference]: Without dead ends: 207 [2024-11-27 23:20:34,013 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=98, Invalid=604, Unknown=0, NotChecked=0, Total=702 [2024-11-27 23:20:34,014 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 19 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:34,015 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 386 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 23:20:34,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-11-27 23:20:34,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 205. [2024-11-27 23:20:34,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 202 states have (on average 1.1386138613861385) internal successors, (230), 204 states have internal predecessors, (230), 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) [2024-11-27 23:20:34,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 230 transitions. [2024-11-27 23:20:34,025 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 230 transitions. Word has length 33 [2024-11-27 23:20:34,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:34,025 INFO L471 AbstractCegarLoop]: Abstraction has 205 states and 230 transitions. [2024-11-27 23:20:34,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 24 states have internal predecessors, (81), 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) [2024-11-27 23:20:34,026 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 230 transitions. [2024-11-27 23:20:34,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-27 23:20:34,030 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:34,031 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:34,042 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-27 23:20:34,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-27 23:20:34,235 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:20:34,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:34,236 INFO L85 PathProgramCache]: Analyzing trace with hash 8987018, now seen corresponding path program 4 times [2024-11-27 23:20:34,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:34,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639941317] [2024-11-27 23:20:34,236 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:20:34,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:34,266 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:20:34,269 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:20:35,132 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-27 23:20:35,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:35,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639941317] [2024-11-27 23:20:35,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639941317] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:20:35,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422404648] [2024-11-27 23:20:35,133 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:20:35,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:20:35,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:20:35,135 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:20:35,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-27 23:20:35,280 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:20:35,281 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:20:35,282 INFO L256 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-27 23:20:35,289 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:20:35,325 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 14 treesize of output 10 [2024-11-27 23:20:36,235 INFO L349 Elim1Store]: treesize reduction 8, result has 75.8 percent of original size [2024-11-27 23:20:36,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 39 [2024-11-27 23:20:36,331 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-27 23:20:36,331 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:20:37,208 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 44 treesize of output 38 [2024-11-27 23:20:37,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 58 [2024-11-27 23:20:37,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2024-11-27 23:20:37,264 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-27 23:20:37,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422404648] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:20:37,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:20:37,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 36 [2024-11-27 23:20:37,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582656508] [2024-11-27 23:20:37,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:20:37,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-27 23:20:37,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:37,266 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-27 23:20:37,266 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1152, Unknown=0, NotChecked=0, Total=1332 [2024-11-27 23:20:37,267 INFO L87 Difference]: Start difference. First operand 205 states and 230 transitions. Second operand has 37 states, 36 states have (on average 1.9166666666666667) internal successors, (69), 37 states have internal predecessors, (69), 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) [2024-11-27 23:20:37,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:37,855 INFO L93 Difference]: Finished difference Result 205 states and 229 transitions. [2024-11-27 23:20:37,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-27 23:20:37,856 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.9166666666666667) internal successors, (69), 37 states have internal predecessors, (69), 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) Word has length 37 [2024-11-27 23:20:37,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:37,857 INFO L225 Difference]: With dead ends: 205 [2024-11-27 23:20:37,857 INFO L226 Difference]: Without dead ends: 205 [2024-11-27 23:20:37,858 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=229, Invalid=1331, Unknown=0, NotChecked=0, Total=1560 [2024-11-27 23:20:37,858 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 17 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:37,859 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 251 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 23:20:37,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2024-11-27 23:20:37,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 187. [2024-11-27 23:20:37,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 185 states have (on average 1.1405405405405404) internal successors, (211), 186 states have internal predecessors, (211), 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) [2024-11-27 23:20:37,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 211 transitions. [2024-11-27 23:20:37,866 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 211 transitions. Word has length 37 [2024-11-27 23:20:37,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:37,866 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 211 transitions. [2024-11-27 23:20:37,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 1.9166666666666667) internal successors, (69), 37 states have internal predecessors, (69), 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) [2024-11-27 23:20:37,866 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 211 transitions. [2024-11-27 23:20:37,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-27 23:20:37,867 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:37,867 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:37,878 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-27 23:20:38,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-27 23:20:38,068 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:20:38,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:38,068 INFO L85 PathProgramCache]: Analyzing trace with hash -508347805, now seen corresponding path program 3 times [2024-11-27 23:20:38,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:38,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12945916] [2024-11-27 23:20:38,069 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:20:38,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:38,095 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-27 23:20:38,095 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:20:38,658 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:38,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:38,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12945916] [2024-11-27 23:20:38,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12945916] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:20:38,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237571312] [2024-11-27 23:20:38,659 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:20:38,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:20:38,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:20:38,661 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:20:38,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-27 23:20:38,791 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-27 23:20:38,791 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:20:38,794 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-27 23:20:38,796 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:20:38,937 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 13 treesize of output 9 [2024-11-27 23:20:39,105 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 7 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:39,105 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:20:39,134 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 13 [2024-11-27 23:20:39,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-27 23:20:39,232 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 7 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:39,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237571312] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:20:39,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:20:39,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 30 [2024-11-27 23:20:39,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40737389] [2024-11-27 23:20:39,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:20:39,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-27 23:20:39,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:39,233 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-27 23:20:39,234 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=792, Unknown=0, NotChecked=0, Total=870 [2024-11-27 23:20:39,234 INFO L87 Difference]: Start difference. First operand 187 states and 211 transitions. Second operand has 30 states, 30 states have (on average 2.6666666666666665) internal successors, (80), 30 states have internal predecessors, (80), 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) [2024-11-27 23:20:40,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:40,475 INFO L93 Difference]: Finished difference Result 317 states and 351 transitions. [2024-11-27 23:20:40,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-27 23:20:40,476 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.6666666666666665) internal successors, (80), 30 states have internal predecessors, (80), 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) Word has length 38 [2024-11-27 23:20:40,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:40,477 INFO L225 Difference]: With dead ends: 317 [2024-11-27 23:20:40,477 INFO L226 Difference]: Without dead ends: 302 [2024-11-27 23:20:40,478 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=246, Invalid=2204, Unknown=0, NotChecked=0, Total=2450 [2024-11-27 23:20:40,478 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 155 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:40,478 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 535 Invalid, 949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 915 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 23:20:40,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2024-11-27 23:20:40,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 232. [2024-11-27 23:20:40,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 230 states have (on average 1.1478260869565218) internal successors, (264), 231 states have internal predecessors, (264), 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) [2024-11-27 23:20:40,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 264 transitions. [2024-11-27 23:20:40,487 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 264 transitions. Word has length 38 [2024-11-27 23:20:40,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:40,487 INFO L471 AbstractCegarLoop]: Abstraction has 232 states and 264 transitions. [2024-11-27 23:20:40,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.6666666666666665) internal successors, (80), 30 states have internal predecessors, (80), 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) [2024-11-27 23:20:40,487 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 264 transitions. [2024-11-27 23:20:40,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-27 23:20:40,488 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:40,488 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:40,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-27 23:20:40,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2024-11-27 23:20:40,689 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:20:40,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:40,689 INFO L85 PathProgramCache]: Analyzing trace with hash 278597589, now seen corresponding path program 2 times [2024-11-27 23:20:40,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:40,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703914185] [2024-11-27 23:20:40,690 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:20:40,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:40,718 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:20:40,718 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:20:41,359 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:41,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:41,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703914185] [2024-11-27 23:20:41,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703914185] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:20:41,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778457013] [2024-11-27 23:20:41,363 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:20:41,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:20:41,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:20:41,366 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:20:41,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-27 23:20:41,519 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:20:41,519 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:20:41,521 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-27 23:20:41,523 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:20:41,729 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 13 treesize of output 9 [2024-11-27 23:20:42,193 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 23:20:42,196 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 23:20:42,196 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 17 treesize of output 10 [2024-11-27 23:20:42,259 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:42,259 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:20:42,617 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 13 [2024-11-27 23:20:42,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 24 treesize of output 20 [2024-11-27 23:20:43,061 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:43,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778457013] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:20:43,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:20:43,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 38 [2024-11-27 23:20:43,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478657264] [2024-11-27 23:20:43,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:20:43,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-27 23:20:43,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:43,063 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-27 23:20:43,064 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1308, Unknown=0, NotChecked=0, Total=1406 [2024-11-27 23:20:43,064 INFO L87 Difference]: Start difference. First operand 232 states and 264 transitions. Second operand has 38 states, 38 states have (on average 2.710526315789474) internal successors, (103), 38 states have internal predecessors, (103), 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) [2024-11-27 23:20:45,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:45,656 INFO L93 Difference]: Finished difference Result 389 states and 437 transitions. [2024-11-27 23:20:45,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-27 23:20:45,656 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.710526315789474) internal successors, (103), 38 states have internal predecessors, (103), 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) Word has length 38 [2024-11-27 23:20:45,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:45,658 INFO L225 Difference]: With dead ends: 389 [2024-11-27 23:20:45,658 INFO L226 Difference]: Without dead ends: 348 [2024-11-27 23:20:45,659 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 817 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=299, Invalid=4813, Unknown=0, NotChecked=0, Total=5112 [2024-11-27 23:20:45,660 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 83 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 1604 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 1616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:45,660 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 907 Invalid, 1616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1604 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-27 23:20:45,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2024-11-27 23:20:45,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 323. [2024-11-27 23:20:45,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 321 states have (on average 1.1370716510903427) internal successors, (365), 322 states have internal predecessors, (365), 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) [2024-11-27 23:20:45,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 365 transitions. [2024-11-27 23:20:45,668 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 365 transitions. Word has length 38 [2024-11-27 23:20:45,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:45,668 INFO L471 AbstractCegarLoop]: Abstraction has 323 states and 365 transitions. [2024-11-27 23:20:45,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.710526315789474) internal successors, (103), 38 states have internal predecessors, (103), 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) [2024-11-27 23:20:45,668 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 365 transitions. [2024-11-27 23:20:45,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-27 23:20:45,669 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:45,669 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:45,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-27 23:20:45,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-11-27 23:20:45,874 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:20:45,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:45,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1694553926, now seen corresponding path program 1 times [2024-11-27 23:20:45,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:45,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651651072] [2024-11-27 23:20:45,874 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:45,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:45,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:46,454 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:46,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:46,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651651072] [2024-11-27 23:20:46,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651651072] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:20:46,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788466176] [2024-11-27 23:20:46,455 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:46,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:20:46,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:20:46,457 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:20:46,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-27 23:20:46,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:46,613 INFO L256 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-27 23:20:46,618 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:20:46,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2024-11-27 23:20:46,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-27 23:20:47,764 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:47,765 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:20:48,666 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:48,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788466176] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:20:48,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:20:48,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 17] total 45 [2024-11-27 23:20:48,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81518258] [2024-11-27 23:20:48,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:20:48,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-27 23:20:48,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:48,667 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-27 23:20:48,668 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=1830, Unknown=0, NotChecked=0, Total=2070 [2024-11-27 23:20:48,668 INFO L87 Difference]: Start difference. First operand 323 states and 365 transitions. Second operand has 46 states, 45 states have (on average 2.6222222222222222) internal successors, (118), 46 states have internal predecessors, (118), 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) [2024-11-27 23:20:50,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:50,071 INFO L93 Difference]: Finished difference Result 381 states and 421 transitions. [2024-11-27 23:20:50,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-27 23:20:50,071 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.6222222222222222) internal successors, (118), 46 states have internal predecessors, (118), 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) Word has length 40 [2024-11-27 23:20:50,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:50,073 INFO L225 Difference]: With dead ends: 381 [2024-11-27 23:20:50,073 INFO L226 Difference]: Without dead ends: 324 [2024-11-27 23:20:50,074 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1076 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=462, Invalid=3444, Unknown=0, NotChecked=0, Total=3906 [2024-11-27 23:20:50,074 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 106 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:50,075 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 481 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1093 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 23:20:50,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2024-11-27 23:20:50,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 286. [2024-11-27 23:20:50,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 284 states have (on average 1.1232394366197183) internal successors, (319), 285 states have internal predecessors, (319), 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) [2024-11-27 23:20:50,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 319 transitions. [2024-11-27 23:20:50,083 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 319 transitions. Word has length 40 [2024-11-27 23:20:50,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:50,083 INFO L471 AbstractCegarLoop]: Abstraction has 286 states and 319 transitions. [2024-11-27 23:20:50,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.6222222222222222) internal successors, (118), 46 states have internal predecessors, (118), 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) [2024-11-27 23:20:50,084 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 319 transitions. [2024-11-27 23:20:50,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-27 23:20:50,085 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:50,085 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:50,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-27 23:20:50,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2024-11-27 23:20:50,289 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:20:50,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:50,289 INFO L85 PathProgramCache]: Analyzing trace with hash 2110026654, now seen corresponding path program 4 times [2024-11-27 23:20:50,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:50,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302292121] [2024-11-27 23:20:50,289 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:20:50,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:50,311 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:20:50,311 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:20:50,654 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 9 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:50,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:50,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302292121] [2024-11-27 23:20:50,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302292121] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:20:50,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043200533] [2024-11-27 23:20:50,655 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:20:50,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:20:50,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:20:50,657 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:20:50,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-27 23:20:50,787 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:20:50,787 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:20:50,789 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-27 23:20:50,791 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:20:50,864 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 13 treesize of output 9 [2024-11-27 23:20:50,900 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 9 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:50,900 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:20:50,940 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 13 [2024-11-27 23:20:50,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-27 23:20:51,047 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 9 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:51,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043200533] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:20:51,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:20:51,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 19 [2024-11-27 23:20:51,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9483549] [2024-11-27 23:20:51,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:20:51,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-27 23:20:51,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:51,049 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-27 23:20:51,049 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2024-11-27 23:20:51,049 INFO L87 Difference]: Start difference. First operand 286 states and 319 transitions. Second operand has 19 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 19 states have internal predecessors, (54), 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) [2024-11-27 23:20:51,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:51,570 INFO L93 Difference]: Finished difference Result 404 states and 445 transitions. [2024-11-27 23:20:51,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-27 23:20:51,570 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 19 states have internal predecessors, (54), 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) Word has length 45 [2024-11-27 23:20:51,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:51,572 INFO L225 Difference]: With dead ends: 404 [2024-11-27 23:20:51,573 INFO L226 Difference]: Without dead ends: 386 [2024-11-27 23:20:51,573 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2024-11-27 23:20:51,573 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 21 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:51,574 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 589 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 23:20:51,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2024-11-27 23:20:51,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 356. [2024-11-27 23:20:51,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 354 states have (on average 1.1214689265536724) internal successors, (397), 355 states have internal predecessors, (397), 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) [2024-11-27 23:20:51,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 397 transitions. [2024-11-27 23:20:51,582 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 397 transitions. Word has length 45 [2024-11-27 23:20:51,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:51,582 INFO L471 AbstractCegarLoop]: Abstraction has 356 states and 397 transitions. [2024-11-27 23:20:51,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 19 states have internal predecessors, (54), 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) [2024-11-27 23:20:51,583 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 397 transitions. [2024-11-27 23:20:51,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-27 23:20:51,583 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:51,583 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:51,594 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-27 23:20:51,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2024-11-27 23:20:51,787 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:20:51,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:51,788 INFO L85 PathProgramCache]: Analyzing trace with hash -975631626, now seen corresponding path program 3 times [2024-11-27 23:20:51,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:51,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008368679] [2024-11-27 23:20:51,788 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:20:51,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:51,847 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-27 23:20:51,847 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:20:52,641 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 1 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:52,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:52,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008368679] [2024-11-27 23:20:52,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008368679] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:20:52,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222187324] [2024-11-27 23:20:52,641 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:20:52,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:20:52,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:20:52,643 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:20:52,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-27 23:20:52,824 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-27 23:20:52,824 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:20:52,826 INFO L256 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-27 23:20:52,828 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:20:52,975 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 13 treesize of output 9 [2024-11-27 23:20:53,198 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:53,199 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:20:53,239 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 13 [2024-11-27 23:20:53,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-27 23:20:53,337 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:53,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222187324] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:20:53,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:20:53,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 15] total 34 [2024-11-27 23:20:53,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514911343] [2024-11-27 23:20:53,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:20:53,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-27 23:20:53,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:53,339 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-27 23:20:53,339 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1033, Unknown=0, NotChecked=0, Total=1122 [2024-11-27 23:20:53,339 INFO L87 Difference]: Start difference. First operand 356 states and 397 transitions. Second operand has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 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) [2024-11-27 23:20:55,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:55,711 INFO L93 Difference]: Finished difference Result 608 states and 672 transitions. [2024-11-27 23:20:55,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-11-27 23:20:55,711 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 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) Word has length 46 [2024-11-27 23:20:55,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:55,713 INFO L225 Difference]: With dead ends: 608 [2024-11-27 23:20:55,713 INFO L226 Difference]: Without dead ends: 528 [2024-11-27 23:20:55,715 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1556 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=503, Invalid=6469, Unknown=0, NotChecked=0, Total=6972 [2024-11-27 23:20:55,715 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 128 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 1183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:55,715 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 656 Invalid, 1183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 23:20:55,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2024-11-27 23:20:55,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 471. [2024-11-27 23:20:55,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 469 states have (on average 1.1215351812366738) internal successors, (526), 470 states have internal predecessors, (526), 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) [2024-11-27 23:20:55,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 526 transitions. [2024-11-27 23:20:55,726 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 526 transitions. Word has length 46 [2024-11-27 23:20:55,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:55,727 INFO L471 AbstractCegarLoop]: Abstraction has 471 states and 526 transitions. [2024-11-27 23:20:55,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 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) [2024-11-27 23:20:55,727 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 526 transitions. [2024-11-27 23:20:55,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-27 23:20:55,728 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:55,728 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:55,739 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-27 23:20:55,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:20:55,929 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:20:55,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:55,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1613416041, now seen corresponding path program 5 times [2024-11-27 23:20:55,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:55,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871590396] [2024-11-27 23:20:55,930 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:20:55,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:55,955 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-27 23:20:55,955 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:20:56,277 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 28 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:56,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:56,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871590396] [2024-11-27 23:20:56,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871590396] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:20:56,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868011548] [2024-11-27 23:20:56,278 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:20:56,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:20:56,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:20:56,281 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:20:56,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-27 23:20:56,430 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-27 23:20:56,430 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:20:56,437 INFO L256 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-27 23:20:56,440 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:20:56,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-27 23:20:56,756 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 28 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:56,757 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:20:57,421 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 28 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:57,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868011548] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:20:57,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:20:57,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 37 [2024-11-27 23:20:57,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906012371] [2024-11-27 23:20:57,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:20:57,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-27 23:20:57,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:57,423 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-27 23:20:57,423 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1217, Unknown=0, NotChecked=0, Total=1406 [2024-11-27 23:20:57,423 INFO L87 Difference]: Start difference. First operand 471 states and 526 transitions. Second operand has 38 states, 37 states have (on average 3.2972972972972974) internal successors, (122), 38 states have internal predecessors, (122), 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) [2024-11-27 23:20:58,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:58,061 INFO L93 Difference]: Finished difference Result 555 states and 618 transitions. [2024-11-27 23:20:58,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-27 23:20:58,062 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 3.2972972972972974) internal successors, (122), 38 states have internal predecessors, (122), 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) Word has length 49 [2024-11-27 23:20:58,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:58,064 INFO L225 Difference]: With dead ends: 555 [2024-11-27 23:20:58,064 INFO L226 Difference]: Without dead ends: 555 [2024-11-27 23:20:58,065 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=211, Invalid=1271, Unknown=0, NotChecked=0, Total=1482 [2024-11-27 23:20:58,065 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 86 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 1089 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 1107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:58,067 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 764 Invalid, 1107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1089 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 23:20:58,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2024-11-27 23:20:58,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 486. [2024-11-27 23:20:58,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 484 states have (on average 1.1260330578512396) internal successors, (545), 485 states have internal predecessors, (545), 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) [2024-11-27 23:20:58,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 545 transitions. [2024-11-27 23:20:58,080 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 545 transitions. Word has length 49 [2024-11-27 23:20:58,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:58,080 INFO L471 AbstractCegarLoop]: Abstraction has 486 states and 545 transitions. [2024-11-27 23:20:58,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 3.2972972972972974) internal successors, (122), 38 states have internal predecessors, (122), 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) [2024-11-27 23:20:58,080 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 545 transitions. [2024-11-27 23:20:58,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-27 23:20:58,082 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:58,082 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:58,093 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-27 23:20:58,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-11-27 23:20:58,283 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:20:58,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:58,283 INFO L85 PathProgramCache]: Analyzing trace with hash -298250895, now seen corresponding path program 6 times [2024-11-27 23:20:58,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:58,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756141584] [2024-11-27 23:20:58,283 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:20:58,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:58,311 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-27 23:20:58,311 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:20:58,952 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 15 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:58,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:58,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756141584] [2024-11-27 23:20:58,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756141584] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:20:58,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349841441] [2024-11-27 23:20:58,952 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:20:58,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:20:58,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:20:58,956 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:20:58,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-27 23:20:59,113 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-27 23:20:59,113 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:20:59,119 INFO L256 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-27 23:20:59,121 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:20:59,330 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 13 treesize of output 9 [2024-11-27 23:20:59,585 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 11 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:59,585 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:20:59,613 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 13 [2024-11-27 23:20:59,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-27 23:20:59,713 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 11 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:20:59,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349841441] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:20:59,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:20:59,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 18] total 38 [2024-11-27 23:20:59,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948171469] [2024-11-27 23:20:59,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:20:59,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-27 23:20:59,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:59,714 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-27 23:20:59,714 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1298, Unknown=0, NotChecked=0, Total=1406 [2024-11-27 23:20:59,714 INFO L87 Difference]: Start difference. First operand 486 states and 545 transitions. Second operand has 38 states, 38 states have (on average 2.8421052631578947) internal successors, (108), 38 states have internal predecessors, (108), 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) [2024-11-27 23:21:01,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:01,350 INFO L93 Difference]: Finished difference Result 769 states and 853 transitions. [2024-11-27 23:21:01,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-27 23:21:01,350 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.8421052631578947) internal successors, (108), 38 states have internal predecessors, (108), 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) Word has length 52 [2024-11-27 23:21:01,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:01,353 INFO L225 Difference]: With dead ends: 769 [2024-11-27 23:21:01,353 INFO L226 Difference]: Without dead ends: 748 [2024-11-27 23:21:01,354 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 899 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=372, Invalid=3918, Unknown=0, NotChecked=0, Total=4290 [2024-11-27 23:21:01,354 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 212 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 1609 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 1662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 23:21:01,354 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 843 Invalid, 1662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1609 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 23:21:01,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2024-11-27 23:21:01,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 593. [2024-11-27 23:21:01,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 591 states have (on average 1.1353637901861253) internal successors, (671), 592 states have internal predecessors, (671), 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) [2024-11-27 23:21:01,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 671 transitions. [2024-11-27 23:21:01,368 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 671 transitions. Word has length 52 [2024-11-27 23:21:01,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:21:01,368 INFO L471 AbstractCegarLoop]: Abstraction has 593 states and 671 transitions. [2024-11-27 23:21:01,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.8421052631578947) internal successors, (108), 38 states have internal predecessors, (108), 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) [2024-11-27 23:21:01,369 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 671 transitions. [2024-11-27 23:21:01,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-27 23:21:01,370 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:01,370 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:21:01,381 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-27 23:21:01,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-11-27 23:21:01,575 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:21:01,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:01,576 INFO L85 PathProgramCache]: Analyzing trace with hash 954480279, now seen corresponding path program 4 times [2024-11-27 23:21:01,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:21:01,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165754411] [2024-11-27 23:21:01,576 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:21:01,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:21:01,617 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:21:01,618 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:21:02,434 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 46 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:02,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:21:02,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165754411] [2024-11-27 23:21:02,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165754411] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:21:02,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85528658] [2024-11-27 23:21:02,435 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:21:02,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:02,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:21:02,437 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:21:02,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-27 23:21:02,642 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:21:02,642 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:21:02,644 INFO L256 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-27 23:21:02,646 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:21:02,842 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 13 treesize of output 9 [2024-11-27 23:21:03,200 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 15 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:03,201 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:21:03,254 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 13 [2024-11-27 23:21:03,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-27 23:21:03,366 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 15 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:03,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85528658] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:21:03,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:21:03,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 35 [2024-11-27 23:21:03,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120129227] [2024-11-27 23:21:03,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:21:03,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-27 23:21:03,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:21:03,368 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-27 23:21:03,368 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1095, Unknown=0, NotChecked=0, Total=1190 [2024-11-27 23:21:03,368 INFO L87 Difference]: Start difference. First operand 593 states and 671 transitions. Second operand has 35 states, 35 states have (on average 3.057142857142857) internal successors, (107), 35 states have internal predecessors, (107), 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) [2024-11-27 23:21:04,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:04,807 INFO L93 Difference]: Finished difference Result 845 states and 950 transitions. [2024-11-27 23:21:04,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-27 23:21:04,808 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.057142857142857) internal successors, (107), 35 states have internal predecessors, (107), 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) Word has length 54 [2024-11-27 23:21:04,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:04,810 INFO L225 Difference]: With dead ends: 845 [2024-11-27 23:21:04,810 INFO L226 Difference]: Without dead ends: 817 [2024-11-27 23:21:04,815 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 669 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=294, Invalid=3246, Unknown=0, NotChecked=0, Total=3540 [2024-11-27 23:21:04,815 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 44 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 1213 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 1224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 23:21:04,816 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 760 Invalid, 1224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1213 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 23:21:04,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2024-11-27 23:21:04,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 744. [2024-11-27 23:21:04,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 742 states have (on average 1.1415094339622642) internal successors, (847), 743 states have internal predecessors, (847), 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) [2024-11-27 23:21:04,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 847 transitions. [2024-11-27 23:21:04,834 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 847 transitions. Word has length 54 [2024-11-27 23:21:04,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:21:04,835 INFO L471 AbstractCegarLoop]: Abstraction has 744 states and 847 transitions. [2024-11-27 23:21:04,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.057142857142857) internal successors, (107), 35 states have internal predecessors, (107), 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) [2024-11-27 23:21:04,835 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 847 transitions. [2024-11-27 23:21:04,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-27 23:21:04,838 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:04,838 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:21:04,851 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-27 23:21:05,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-11-27 23:21:05,040 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:21:05,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:05,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1122126420, now seen corresponding path program 2 times [2024-11-27 23:21:05,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:21:05,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476911998] [2024-11-27 23:21:05,041 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:21:05,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:21:05,062 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:21:05,062 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:21:05,912 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 6 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:05,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:21:05,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476911998] [2024-11-27 23:21:05,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476911998] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:21:05,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576872515] [2024-11-27 23:21:05,912 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:21:05,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:05,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:21:05,914 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:21:05,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-27 23:21:06,060 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:21:06,061 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:21:06,063 INFO L256 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-11-27 23:21:06,065 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:21:06,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2024-11-27 23:21:06,128 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-27 23:21:07,690 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:07,690 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:21:08,915 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:08,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576872515] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:21:08,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:21:08,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 59 [2024-11-27 23:21:08,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899578111] [2024-11-27 23:21:08,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:21:08,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-27 23:21:08,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:21:08,917 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-27 23:21:08,918 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=339, Invalid=3201, Unknown=0, NotChecked=0, Total=3540 [2024-11-27 23:21:08,918 INFO L87 Difference]: Start difference. First operand 744 states and 847 transitions. Second operand has 60 states, 59 states have (on average 2.711864406779661) internal successors, (160), 60 states have internal predecessors, (160), 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) [2024-11-27 23:21:11,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:11,815 INFO L93 Difference]: Finished difference Result 935 states and 1036 transitions. [2024-11-27 23:21:11,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-27 23:21:11,816 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 2.711864406779661) internal successors, (160), 60 states have internal predecessors, (160), 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) Word has length 54 [2024-11-27 23:21:11,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:11,818 INFO L225 Difference]: With dead ends: 935 [2024-11-27 23:21:11,818 INFO L226 Difference]: Without dead ends: 807 [2024-11-27 23:21:11,820 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2039 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=722, Invalid=6418, Unknown=0, NotChecked=0, Total=7140 [2024-11-27 23:21:11,820 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 142 mSDsluCounter, 1128 mSDsCounter, 0 mSdLazyCounter, 2522 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 1176 SdHoareTripleChecker+Invalid, 2548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-27 23:21:11,821 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 1176 Invalid, 2548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 2522 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-27 23:21:11,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2024-11-27 23:21:11,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 638. [2024-11-27 23:21:11,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 636 states have (on average 1.1132075471698113) internal successors, (708), 637 states have internal predecessors, (708), 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) [2024-11-27 23:21:11,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 708 transitions. [2024-11-27 23:21:11,831 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 708 transitions. Word has length 54 [2024-11-27 23:21:11,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:21:11,831 INFO L471 AbstractCegarLoop]: Abstraction has 638 states and 708 transitions. [2024-11-27 23:21:11,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 2.711864406779661) internal successors, (160), 60 states have internal predecessors, (160), 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) [2024-11-27 23:21:11,832 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 708 transitions. [2024-11-27 23:21:11,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-27 23:21:11,833 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:11,833 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:21:11,844 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-27 23:21:12,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-11-27 23:21:12,034 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:21:12,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:12,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1672051832, now seen corresponding path program 3 times [2024-11-27 23:21:12,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:21:12,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923495911] [2024-11-27 23:21:12,034 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:21:12,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:21:12,068 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-27 23:21:12,068 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:21:12,902 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 1 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:12,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:21:12,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923495911] [2024-11-27 23:21:12,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923495911] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:21:12,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745179276] [2024-11-27 23:21:12,906 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:21:12,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:12,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:21:12,909 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:21:12,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-27 23:21:13,088 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-27 23:21:13,088 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:21:13,090 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-11-27 23:21:13,093 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:21:13,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-27 23:21:14,838 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:14,838 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:21:16,255 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:16,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745179276] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:21:16,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:21:16,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21, 21] total 60 [2024-11-27 23:21:16,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17092050] [2024-11-27 23:21:16,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:21:16,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-11-27 23:21:16,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:21:16,256 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-11-27 23:21:16,256 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=377, Invalid=3283, Unknown=0, NotChecked=0, Total=3660 [2024-11-27 23:21:16,256 INFO L87 Difference]: Start difference. First operand 638 states and 708 transitions. Second operand has 61 states, 60 states have (on average 2.7666666666666666) internal successors, (166), 61 states have internal predecessors, (166), 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) [2024-11-27 23:21:18,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:18,889 INFO L93 Difference]: Finished difference Result 873 states and 948 transitions. [2024-11-27 23:21:18,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-27 23:21:18,890 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 60 states have (on average 2.7666666666666666) internal successors, (166), 61 states have internal predecessors, (166), 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) Word has length 56 [2024-11-27 23:21:18,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:18,891 INFO L225 Difference]: With dead ends: 873 [2024-11-27 23:21:18,891 INFO L226 Difference]: Without dead ends: 757 [2024-11-27 23:21:18,892 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2578 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=911, Invalid=7645, Unknown=0, NotChecked=0, Total=8556 [2024-11-27 23:21:18,892 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 189 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 2270 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 2308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:21:18,892 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 997 Invalid, 2308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 2270 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-27 23:21:18,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2024-11-27 23:21:18,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 640. [2024-11-27 23:21:18,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 638 states have (on average 1.1128526645768024) internal successors, (710), 639 states have internal predecessors, (710), 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) [2024-11-27 23:21:18,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 710 transitions. [2024-11-27 23:21:18,903 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 710 transitions. Word has length 56 [2024-11-27 23:21:18,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:21:18,903 INFO L471 AbstractCegarLoop]: Abstraction has 640 states and 710 transitions. [2024-11-27 23:21:18,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 60 states have (on average 2.7666666666666666) internal successors, (166), 61 states have internal predecessors, (166), 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) [2024-11-27 23:21:18,903 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 710 transitions. [2024-11-27 23:21:18,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-27 23:21:18,905 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:18,905 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:21:18,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-27 23:21:19,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-11-27 23:21:19,106 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:21:19,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:19,106 INFO L85 PathProgramCache]: Analyzing trace with hash -55805058, now seen corresponding path program 5 times [2024-11-27 23:21:19,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:21:19,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511120704] [2024-11-27 23:21:19,106 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:21:19,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:21:19,137 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-27 23:21:19,137 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:21:20,193 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 28 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:20,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:21:20,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511120704] [2024-11-27 23:21:20,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511120704] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:21:20,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648051414] [2024-11-27 23:21:20,194 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:21:20,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:20,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:21:20,196 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:21:20,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-27 23:21:20,430 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-27 23:21:20,430 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:21:20,433 INFO L256 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-11-27 23:21:20,437 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:21:20,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2024-11-27 23:21:21,817 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 28 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:21,817 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:21:22,999 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 45 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:22,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648051414] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:21:22,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:21:22,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17, 17] total 52 [2024-11-27 23:21:22,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446853452] [2024-11-27 23:21:22,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:21:23,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-27 23:21:23,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:21:23,000 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-27 23:21:23,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=2477, Unknown=0, NotChecked=0, Total=2756 [2024-11-27 23:21:23,001 INFO L87 Difference]: Start difference. First operand 640 states and 710 transitions. Second operand has 53 states, 52 states have (on average 3.3076923076923075) internal successors, (172), 53 states have internal predecessors, (172), 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) [2024-11-27 23:21:25,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:25,138 INFO L93 Difference]: Finished difference Result 716 states and 787 transitions. [2024-11-27 23:21:25,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-27 23:21:25,139 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 3.3076923076923075) internal successors, (172), 53 states have internal predecessors, (172), 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) Word has length 58 [2024-11-27 23:21:25,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:25,142 INFO L225 Difference]: With dead ends: 716 [2024-11-27 23:21:25,142 INFO L226 Difference]: Without dead ends: 716 [2024-11-27 23:21:25,143 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1541 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=598, Invalid=5254, Unknown=0, NotChecked=0, Total=5852 [2024-11-27 23:21:25,143 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 81 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 1620 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 1642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:21:25,143 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 948 Invalid, 1642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1620 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-27 23:21:25,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2024-11-27 23:21:25,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 647. [2024-11-27 23:21:25,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 645 states have (on average 1.1131782945736435) internal successors, (718), 646 states have internal predecessors, (718), 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) [2024-11-27 23:21:25,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 718 transitions. [2024-11-27 23:21:25,154 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 718 transitions. Word has length 58 [2024-11-27 23:21:25,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:21:25,154 INFO L471 AbstractCegarLoop]: Abstraction has 647 states and 718 transitions. [2024-11-27 23:21:25,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 3.3076923076923075) internal successors, (172), 53 states have internal predecessors, (172), 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) [2024-11-27 23:21:25,154 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 718 transitions. [2024-11-27 23:21:25,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-27 23:21:25,156 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:25,156 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:21:25,168 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-27 23:21:25,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2024-11-27 23:21:25,357 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:21:25,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:25,357 INFO L85 PathProgramCache]: Analyzing trace with hash -548153840, now seen corresponding path program 7 times [2024-11-27 23:21:25,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:21:25,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937290686] [2024-11-27 23:21:25,357 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:21:25,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:21:25,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:26,166 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 28 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:26,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:21:26,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937290686] [2024-11-27 23:21:26,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937290686] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:21:26,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217125927] [2024-11-27 23:21:26,167 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:21:26,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:26,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:21:26,169 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:21:26,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-27 23:21:26,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:26,340 INFO L256 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-27 23:21:26,343 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:21:26,598 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 13 treesize of output 9 [2024-11-27 23:21:26,937 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 13 proven. 123 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:26,937 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:21:26,975 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 13 [2024-11-27 23:21:26,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-27 23:21:27,105 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 13 proven. 123 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:27,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217125927] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:21:27,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:21:27,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 41 [2024-11-27 23:21:27,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301020480] [2024-11-27 23:21:27,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:21:27,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-27 23:21:27,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:21:27,108 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-27 23:21:27,108 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1539, Unknown=0, NotChecked=0, Total=1640 [2024-11-27 23:21:27,108 INFO L87 Difference]: Start difference. First operand 647 states and 718 transitions. Second operand has 41 states, 41 states have (on average 2.975609756097561) internal successors, (122), 41 states have internal predecessors, (122), 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) [2024-11-27 23:21:29,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:29,205 INFO L93 Difference]: Finished difference Result 982 states and 1080 transitions. [2024-11-27 23:21:29,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-27 23:21:29,205 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.975609756097561) internal successors, (122), 41 states have internal predecessors, (122), 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) Word has length 59 [2024-11-27 23:21:29,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:29,209 INFO L225 Difference]: With dead ends: 982 [2024-11-27 23:21:29,209 INFO L226 Difference]: Without dead ends: 958 [2024-11-27 23:21:29,210 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 732 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=304, Invalid=4118, Unknown=0, NotChecked=0, Total=4422 [2024-11-27 23:21:29,210 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 152 mSDsluCounter, 1334 mSDsCounter, 0 mSdLazyCounter, 2480 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 1385 SdHoareTripleChecker+Invalid, 2508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:21:29,210 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 1385 Invalid, 2508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2480 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-27 23:21:29,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2024-11-27 23:21:29,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 809. [2024-11-27 23:21:29,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 807 states have (on average 1.117719950433705) internal successors, (902), 808 states have internal predecessors, (902), 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) [2024-11-27 23:21:29,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 902 transitions. [2024-11-27 23:21:29,222 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 902 transitions. Word has length 59 [2024-11-27 23:21:29,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:21:29,223 INFO L471 AbstractCegarLoop]: Abstraction has 809 states and 902 transitions. [2024-11-27 23:21:29,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.975609756097561) internal successors, (122), 41 states have internal predecessors, (122), 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) [2024-11-27 23:21:29,223 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 902 transitions. [2024-11-27 23:21:29,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-27 23:21:29,225 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:29,225 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:21:29,236 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-27 23:21:29,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:29,430 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:21:29,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:29,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1846362753, now seen corresponding path program 8 times [2024-11-27 23:21:29,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:21:29,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119491138] [2024-11-27 23:21:29,431 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:21:29,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:21:29,447 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:21:29,447 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:21:30,337 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 45 proven. 138 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:30,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:21:30,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119491138] [2024-11-27 23:21:30,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119491138] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:21:30,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061462718] [2024-11-27 23:21:30,338 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:21:30,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:30,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:21:30,340 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:21:30,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-27 23:21:30,498 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:21:30,498 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:21:30,500 INFO L256 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-27 23:21:30,502 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:21:30,796 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 13 treesize of output 9 [2024-11-27 23:21:31,189 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 15 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:31,189 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:21:31,233 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 13 [2024-11-27 23:21:31,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-27 23:21:31,378 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 15 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:31,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061462718] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:21:31,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:21:31,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 22] total 46 [2024-11-27 23:21:31,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429137601] [2024-11-27 23:21:31,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:21:31,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-27 23:21:31,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:21:31,379 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-27 23:21:31,380 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1953, Unknown=0, NotChecked=0, Total=2070 [2024-11-27 23:21:31,380 INFO L87 Difference]: Start difference. First operand 809 states and 902 transitions. Second operand has 46 states, 46 states have (on average 2.9565217391304346) internal successors, (136), 46 states have internal predecessors, (136), 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) [2024-11-27 23:21:33,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:33,997 INFO L93 Difference]: Finished difference Result 1213 states and 1341 transitions. [2024-11-27 23:21:33,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-27 23:21:33,997 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.9565217391304346) internal successors, (136), 46 states have internal predecessors, (136), 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) Word has length 66 [2024-11-27 23:21:33,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:33,999 INFO L225 Difference]: With dead ends: 1213 [2024-11-27 23:21:33,999 INFO L226 Difference]: Without dead ends: 1186 [2024-11-27 23:21:34,000 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 924 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=327, Invalid=5075, Unknown=0, NotChecked=0, Total=5402 [2024-11-27 23:21:34,000 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 153 mSDsluCounter, 1766 mSDsCounter, 0 mSdLazyCounter, 3291 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 1822 SdHoareTripleChecker+Invalid, 3322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 3291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-27 23:21:34,000 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 1822 Invalid, 3322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 3291 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-27 23:21:34,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2024-11-27 23:21:34,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 971. [2024-11-27 23:21:34,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 969 states have (on average 1.1259029927760578) internal successors, (1091), 970 states have internal predecessors, (1091), 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) [2024-11-27 23:21:34,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1091 transitions. [2024-11-27 23:21:34,017 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1091 transitions. Word has length 66 [2024-11-27 23:21:34,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:21:34,017 INFO L471 AbstractCegarLoop]: Abstraction has 971 states and 1091 transitions. [2024-11-27 23:21:34,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.9565217391304346) internal successors, (136), 46 states have internal predecessors, (136), 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) [2024-11-27 23:21:34,017 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1091 transitions. [2024-11-27 23:21:34,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-27 23:21:34,019 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:34,019 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:21:34,030 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-27 23:21:34,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:34,220 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:21:34,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:34,220 INFO L85 PathProgramCache]: Analyzing trace with hash -852493070, now seen corresponding path program 6 times [2024-11-27 23:21:34,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:21:34,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243504074] [2024-11-27 23:21:34,220 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:21:34,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:21:34,264 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-27 23:21:34,264 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:21:35,669 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 85 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:35,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:21:35,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243504074] [2024-11-27 23:21:35,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243504074] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:21:35,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942305924] [2024-11-27 23:21:35,670 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:21:35,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:35,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:21:35,672 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:21:35,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-27 23:21:36,118 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-27 23:21:36,118 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:21:36,123 INFO L256 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 105 conjuncts are in the unsatisfiable core [2024-11-27 23:21:36,125 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:21:36,435 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 [2024-11-27 23:21:36,853 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 42 proven. 105 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 23:21:36,853 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:21:37,177 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 13 [2024-11-27 23:21:37,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-27 23:21:37,530 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 42 proven. 105 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 23:21:37,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942305924] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:21:37,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:21:37,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 19, 19] total 59 [2024-11-27 23:21:37,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807218133] [2024-11-27 23:21:37,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:21:37,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-27 23:21:37,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:21:37,532 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-27 23:21:37,532 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=3204, Unknown=0, NotChecked=0, Total=3422 [2024-11-27 23:21:37,532 INFO L87 Difference]: Start difference. First operand 971 states and 1091 transitions. Second operand has 59 states, 59 states have (on average 3.0508474576271185) internal successors, (180), 59 states have internal predecessors, (180), 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) [2024-11-27 23:21:39,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:39,893 INFO L93 Difference]: Finished difference Result 1374 states and 1538 transitions. [2024-11-27 23:21:39,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-27 23:21:39,893 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 3.0508474576271185) internal successors, (180), 59 states have internal predecessors, (180), 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) Word has length 66 [2024-11-27 23:21:39,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:39,895 INFO L225 Difference]: With dead ends: 1374 [2024-11-27 23:21:39,895 INFO L226 Difference]: Without dead ends: 1309 [2024-11-27 23:21:39,896 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2308 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=504, Invalid=7686, Unknown=0, NotChecked=0, Total=8190 [2024-11-27 23:21:39,897 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 78 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 2435 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 2443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 2435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:21:39,897 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 985 Invalid, 2443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 2435 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-27 23:21:39,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1309 states. [2024-11-27 23:21:39,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1309 to 1182. [2024-11-27 23:21:39,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1182 states, 1180 states have (on average 1.1305084745762712) internal successors, (1334), 1181 states have internal predecessors, (1334), 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) [2024-11-27 23:21:39,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 1334 transitions. [2024-11-27 23:21:39,916 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 1334 transitions. Word has length 66 [2024-11-27 23:21:39,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:21:39,917 INFO L471 AbstractCegarLoop]: Abstraction has 1182 states and 1334 transitions. [2024-11-27 23:21:39,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 3.0508474576271185) internal successors, (180), 59 states have internal predecessors, (180), 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) [2024-11-27 23:21:39,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 1334 transitions. [2024-11-27 23:21:39,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-27 23:21:39,919 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:39,919 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:21:39,931 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-27 23:21:40,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:40,120 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:21:40,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:40,120 INFO L85 PathProgramCache]: Analyzing trace with hash 201472610, now seen corresponding path program 4 times [2024-11-27 23:21:40,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:21:40,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268972347] [2024-11-27 23:21:40,121 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:21:40,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:21:40,157 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:21:40,157 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:21:41,087 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 28 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:41,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:21:41,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268972347] [2024-11-27 23:21:41,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268972347] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:21:41,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538020153] [2024-11-27 23:21:41,087 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:21:41,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:41,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:21:41,089 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:21:41,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-27 23:21:41,301 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:21:41,301 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:21:41,303 INFO L256 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-11-27 23:21:41,306 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:21:41,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-27 23:21:43,286 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 15 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:43,286 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:21:44,711 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 67 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:44,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538020153] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:21:44,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:21:44,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21, 21] total 63 [2024-11-27 23:21:44,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922454379] [2024-11-27 23:21:44,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:21:44,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-27 23:21:44,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:21:44,713 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-27 23:21:44,713 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=422, Invalid=3610, Unknown=0, NotChecked=0, Total=4032 [2024-11-27 23:21:44,713 INFO L87 Difference]: Start difference. First operand 1182 states and 1334 transitions. Second operand has 64 states, 63 states have (on average 3.2063492063492065) internal successors, (202), 64 states have internal predecessors, (202), 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) [2024-11-27 23:21:47,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:47,473 INFO L93 Difference]: Finished difference Result 1456 states and 1606 transitions. [2024-11-27 23:21:47,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-27 23:21:47,474 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 3.2063492063492065) internal successors, (202), 64 states have internal predecessors, (202), 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) Word has length 68 [2024-11-27 23:21:47,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:47,477 INFO L225 Difference]: With dead ends: 1456 [2024-11-27 23:21:47,477 INFO L226 Difference]: Without dead ends: 1292 [2024-11-27 23:21:47,478 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2277 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=899, Invalid=7473, Unknown=0, NotChecked=0, Total=8372 [2024-11-27 23:21:47,478 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 133 mSDsluCounter, 1325 mSDsCounter, 0 mSdLazyCounter, 2757 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 1381 SdHoareTripleChecker+Invalid, 2795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-27 23:21:47,478 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 1381 Invalid, 2795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 2757 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-27 23:21:47,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2024-11-27 23:21:47,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 988. [2024-11-27 23:21:47,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 988 states, 986 states have (on average 1.1075050709939147) internal successors, (1092), 987 states have internal predecessors, (1092), 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) [2024-11-27 23:21:47,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1092 transitions. [2024-11-27 23:21:47,492 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1092 transitions. Word has length 68 [2024-11-27 23:21:47,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:21:47,492 INFO L471 AbstractCegarLoop]: Abstraction has 988 states and 1092 transitions. [2024-11-27 23:21:47,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 3.2063492063492065) internal successors, (202), 64 states have internal predecessors, (202), 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) [2024-11-27 23:21:47,492 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1092 transitions. [2024-11-27 23:21:47,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-27 23:21:47,494 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:47,494 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:21:47,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-27 23:21:47,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:47,695 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:21:47,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:47,695 INFO L85 PathProgramCache]: Analyzing trace with hash 720183129, now seen corresponding path program 7 times [2024-11-27 23:21:47,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:21:47,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029158759] [2024-11-27 23:21:47,695 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:21:47,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:21:47,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:48,675 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 85 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:48,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:21:48,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029158759] [2024-11-27 23:21:48,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029158759] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:21:48,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520508768] [2024-11-27 23:21:48,676 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:21:48,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:48,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:21:48,677 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:21:48,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-27 23:21:48,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:21:48,870 INFO L256 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-11-27 23:21:48,872 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:21:49,125 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 13 treesize of output 9 [2024-11-27 23:21:49,519 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 21 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:49,520 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:21:49,575 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 13 [2024-11-27 23:21:49,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-27 23:21:49,708 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 21 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:49,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520508768] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:21:49,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:21:49,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 43 [2024-11-27 23:21:49,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762321432] [2024-11-27 23:21:49,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:21:49,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-27 23:21:49,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:21:49,710 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-27 23:21:49,710 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1689, Unknown=0, NotChecked=0, Total=1806 [2024-11-27 23:21:49,710 INFO L87 Difference]: Start difference. First operand 988 states and 1092 transitions. Second operand has 43 states, 43 states have (on average 3.2325581395348837) internal successors, (139), 43 states have internal predecessors, (139), 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) [2024-11-27 23:21:51,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:21:51,622 INFO L93 Difference]: Finished difference Result 1480 states and 1620 transitions. [2024-11-27 23:21:51,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-27 23:21:51,623 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.2325581395348837) internal successors, (139), 43 states have internal predecessors, (139), 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) Word has length 70 [2024-11-27 23:21:51,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:21:51,625 INFO L225 Difference]: With dead ends: 1480 [2024-11-27 23:21:51,625 INFO L226 Difference]: Without dead ends: 1388 [2024-11-27 23:21:51,625 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 736 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=308, Invalid=4114, Unknown=0, NotChecked=0, Total=4422 [2024-11-27 23:21:51,626 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 52 mSDsluCounter, 1098 mSDsCounter, 0 mSdLazyCounter, 2114 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 1139 SdHoareTripleChecker+Invalid, 2132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:21:51,626 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 1139 Invalid, 2132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2114 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-27 23:21:51,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1388 states. [2024-11-27 23:21:51,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1388 to 1184. [2024-11-27 23:21:51,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1184 states, 1182 states have (on average 1.1125211505922166) internal successors, (1315), 1183 states have internal predecessors, (1315), 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) [2024-11-27 23:21:51,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1184 states to 1184 states and 1315 transitions. [2024-11-27 23:21:51,637 INFO L78 Accepts]: Start accepts. Automaton has 1184 states and 1315 transitions. Word has length 70 [2024-11-27 23:21:51,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:21:51,637 INFO L471 AbstractCegarLoop]: Abstraction has 1184 states and 1315 transitions. [2024-11-27 23:21:51,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 3.2325581395348837) internal successors, (139), 43 states have internal predecessors, (139), 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) [2024-11-27 23:21:51,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1184 states and 1315 transitions. [2024-11-27 23:21:51,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-27 23:21:51,639 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:21:51,639 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:21:51,650 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-27 23:21:51,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2024-11-27 23:21:51,840 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:21:51,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:21:51,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1674377194, now seen corresponding path program 5 times [2024-11-27 23:21:51,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:21:51,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365355031] [2024-11-27 23:21:51,841 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:21:51,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:21:51,870 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-27 23:21:51,870 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:21:52,845 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 21 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:52,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:21:52,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365355031] [2024-11-27 23:21:52,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365355031] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:21:52,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827334839] [2024-11-27 23:21:52,845 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:21:52,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:21:52,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:21:52,847 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:21:52,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-27 23:21:53,112 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-27 23:21:53,112 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:21:53,115 INFO L256 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 94 conjuncts are in the unsatisfiable core [2024-11-27 23:21:53,119 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:21:53,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-27 23:21:53,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2024-11-27 23:21:55,086 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 21 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:55,086 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:21:56,843 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 43 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:21:56,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827334839] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:21:56,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:21:56,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21, 21] total 63 [2024-11-27 23:21:56,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49632368] [2024-11-27 23:21:56,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:21:56,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-27 23:21:56,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:21:56,844 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-27 23:21:56,845 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=3675, Unknown=0, NotChecked=0, Total=4032 [2024-11-27 23:21:56,845 INFO L87 Difference]: Start difference. First operand 1184 states and 1315 transitions. Second operand has 64 states, 63 states have (on average 3.3015873015873014) internal successors, (208), 64 states have internal predecessors, (208), 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) [2024-11-27 23:22:00,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:22:00,244 INFO L93 Difference]: Finished difference Result 1756 states and 1906 transitions. [2024-11-27 23:22:00,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-27 23:22:00,245 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 3.3015873015873014) internal successors, (208), 64 states have internal predecessors, (208), 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) Word has length 70 [2024-11-27 23:22:00,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:22:00,248 INFO L225 Difference]: With dead ends: 1756 [2024-11-27 23:22:00,248 INFO L226 Difference]: Without dead ends: 1578 [2024-11-27 23:22:00,249 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2366 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=791, Invalid=8139, Unknown=0, NotChecked=0, Total=8930 [2024-11-27 23:22:00,249 INFO L435 NwaCegarLoop]: 65 mSDtfsCounter, 112 mSDsluCounter, 1471 mSDsCounter, 0 mSdLazyCounter, 3091 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 1536 SdHoareTripleChecker+Invalid, 3122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 3091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:22:00,249 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 1536 Invalid, 3122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 3091 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-27 23:22:00,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1578 states. [2024-11-27 23:22:00,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1578 to 1210. [2024-11-27 23:22:00,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1210 states, 1208 states have (on average 1.1100993377483444) internal successors, (1341), 1209 states have internal predecessors, (1341), 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) [2024-11-27 23:22:00,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1341 transitions. [2024-11-27 23:22:00,265 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1341 transitions. Word has length 70 [2024-11-27 23:22:00,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:22:00,265 INFO L471 AbstractCegarLoop]: Abstraction has 1210 states and 1341 transitions. [2024-11-27 23:22:00,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 3.3015873015873014) internal successors, (208), 64 states have internal predecessors, (208), 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) [2024-11-27 23:22:00,265 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1341 transitions. [2024-11-27 23:22:00,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-27 23:22:00,267 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:22:00,268 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:22:00,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-27 23:22:00,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2024-11-27 23:22:00,468 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:22:00,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:00,469 INFO L85 PathProgramCache]: Analyzing trace with hash -462327350, now seen corresponding path program 6 times [2024-11-27 23:22:00,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:22:00,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538284212] [2024-11-27 23:22:00,469 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:22:00,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:22:00,507 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-27 23:22:00,507 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:22:01,514 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 15 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:22:01,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:22:01,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538284212] [2024-11-27 23:22:01,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538284212] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:22:01,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435857270] [2024-11-27 23:22:01,514 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:22:01,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:01,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:22:01,516 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:22:01,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-27 23:22:01,890 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-27 23:22:01,891 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:22:01,895 INFO L256 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 118 conjuncts are in the unsatisfiable core [2024-11-27 23:22:01,898 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:22:01,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2024-11-27 23:22:03,974 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:22:03,974 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:22:05,721 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:22:05,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435857270] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:22:05,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:22:05,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 24] total 71 [2024-11-27 23:22:05,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524472706] [2024-11-27 23:22:05,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:22:05,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-11-27 23:22:05,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:22:05,723 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-11-27 23:22:05,723 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=474, Invalid=4638, Unknown=0, NotChecked=0, Total=5112 [2024-11-27 23:22:05,723 INFO L87 Difference]: Start difference. First operand 1210 states and 1341 transitions. Second operand has 72 states, 71 states have (on average 3.0140845070422535) internal successors, (214), 72 states have internal predecessors, (214), 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) [2024-11-27 23:22:10,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:22:10,062 INFO L93 Difference]: Finished difference Result 1552 states and 1688 transitions. [2024-11-27 23:22:10,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-11-27 23:22:10,063 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 71 states have (on average 3.0140845070422535) internal successors, (214), 72 states have internal predecessors, (214), 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) Word has length 72 [2024-11-27 23:22:10,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:22:10,065 INFO L225 Difference]: With dead ends: 1552 [2024-11-27 23:22:10,065 INFO L226 Difference]: Without dead ends: 1404 [2024-11-27 23:22:10,066 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3947 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1225, Invalid=11207, Unknown=0, NotChecked=0, Total=12432 [2024-11-27 23:22:10,066 INFO L435 NwaCegarLoop]: 55 mSDtfsCounter, 300 mSDsluCounter, 1549 mSDsCounter, 0 mSdLazyCounter, 3734 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 1604 SdHoareTripleChecker+Invalid, 3793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 3734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:22:10,066 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 1604 Invalid, 3793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 3734 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-27 23:22:10,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2024-11-27 23:22:10,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 1212. [2024-11-27 23:22:10,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 1210 states have (on average 1.1099173553719008) internal successors, (1343), 1211 states have internal predecessors, (1343), 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) [2024-11-27 23:22:10,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 1343 transitions. [2024-11-27 23:22:10,079 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 1343 transitions. Word has length 72 [2024-11-27 23:22:10,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:22:10,079 INFO L471 AbstractCegarLoop]: Abstraction has 1212 states and 1343 transitions. [2024-11-27 23:22:10,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 71 states have (on average 3.0140845070422535) internal successors, (214), 72 states have internal predecessors, (214), 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) [2024-11-27 23:22:10,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 1343 transitions. [2024-11-27 23:22:10,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-27 23:22:10,081 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:22:10,081 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:22:10,093 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-27 23:22:10,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2024-11-27 23:22:10,281 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:22:10,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:10,282 INFO L85 PathProgramCache]: Analyzing trace with hash -683750526, now seen corresponding path program 9 times [2024-11-27 23:22:10,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:22:10,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042249776] [2024-11-27 23:22:10,282 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:22:10,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:22:10,318 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-27 23:22:10,318 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:22:11,402 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 66 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:22:11,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:22:11,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042249776] [2024-11-27 23:22:11,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042249776] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:22:11,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735085264] [2024-11-27 23:22:11,403 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:22:11,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:11,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:22:11,406 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:22:11,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-27 23:22:11,687 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-27 23:22:11,687 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:22:11,690 INFO L256 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-27 23:22:11,692 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:22:12,000 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 13 treesize of output 9 [2024-11-27 23:22:12,427 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 17 proven. 220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:22:12,427 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:22:12,474 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 13 [2024-11-27 23:22:12,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-27 23:22:12,619 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 17 proven. 220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:22:12,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735085264] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:22:12,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:22:12,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 24, 24] total 51 [2024-11-27 23:22:12,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081275336] [2024-11-27 23:22:12,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:22:12,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-27 23:22:12,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:22:12,621 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-27 23:22:12,621 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=2380, Unknown=0, NotChecked=0, Total=2550 [2024-11-27 23:22:12,621 INFO L87 Difference]: Start difference. First operand 1212 states and 1343 transitions. Second operand has 51 states, 51 states have (on average 2.9411764705882355) internal successors, (150), 51 states have internal predecessors, (150), 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) [2024-11-27 23:22:15,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:22:15,590 INFO L93 Difference]: Finished difference Result 1758 states and 1933 transitions. [2024-11-27 23:22:15,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-27 23:22:15,590 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.9411764705882355) internal successors, (150), 51 states have internal predecessors, (150), 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) Word has length 73 [2024-11-27 23:22:15,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:22:15,594 INFO L225 Difference]: With dead ends: 1758 [2024-11-27 23:22:15,594 INFO L226 Difference]: Without dead ends: 1728 [2024-11-27 23:22:15,595 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1800 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=605, Invalid=7585, Unknown=0, NotChecked=0, Total=8190 [2024-11-27 23:22:15,595 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 280 mSDsluCounter, 1321 mSDsCounter, 0 mSdLazyCounter, 2983 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 3067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:22:15,595 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 1369 Invalid, 3067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2983 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-27 23:22:15,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1728 states. [2024-11-27 23:22:15,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1728 to 1478. [2024-11-27 23:22:15,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1478 states, 1476 states have (on average 1.1151761517615175) internal successors, (1646), 1477 states have internal predecessors, (1646), 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) [2024-11-27 23:22:15,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 1646 transitions. [2024-11-27 23:22:15,615 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 1646 transitions. Word has length 73 [2024-11-27 23:22:15,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:22:15,615 INFO L471 AbstractCegarLoop]: Abstraction has 1478 states and 1646 transitions. [2024-11-27 23:22:15,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.9411764705882355) internal successors, (150), 51 states have internal predecessors, (150), 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) [2024-11-27 23:22:15,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 1646 transitions. [2024-11-27 23:22:15,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-27 23:22:15,617 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:22:15,617 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:22:15,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-11-27 23:22:15,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:15,818 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:22:15,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:15,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1190442560, now seen corresponding path program 8 times [2024-11-27 23:22:15,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:22:15,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27195214] [2024-11-27 23:22:15,819 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:22:15,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:22:15,845 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:22:15,845 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:22:16,959 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 45 proven. 151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:22:16,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:22:16,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27195214] [2024-11-27 23:22:16,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27195214] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:22:16,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272282106] [2024-11-27 23:22:16,960 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:22:16,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:16,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:22:16,961 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:22:16,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-27 23:22:17,177 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:22:17,177 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:22:17,180 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 135 conjuncts are in the unsatisfiable core [2024-11-27 23:22:17,184 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:22:17,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-27 23:22:17,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2024-11-27 23:22:19,156 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:22:19,156 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:22:20,831 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:22:20,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272282106] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:22:20,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:22:20,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24, 24] total 69 [2024-11-27 23:22:20,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525332440] [2024-11-27 23:22:20,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:22:20,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-11-27 23:22:20,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:22:20,833 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-11-27 23:22:20,833 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=440, Invalid=4390, Unknown=0, NotChecked=0, Total=4830 [2024-11-27 23:22:20,833 INFO L87 Difference]: Start difference. First operand 1478 states and 1646 transitions. Second operand has 70 states, 69 states have (on average 3.1884057971014492) internal successors, (220), 70 states have internal predecessors, (220), 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) [2024-11-27 23:22:23,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:22:23,824 INFO L93 Difference]: Finished difference Result 1622 states and 1793 transitions. [2024-11-27 23:22:23,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-27 23:22:23,824 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 69 states have (on average 3.1884057971014492) internal successors, (220), 70 states have internal predecessors, (220), 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) Word has length 74 [2024-11-27 23:22:23,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:22:23,827 INFO L225 Difference]: With dead ends: 1622 [2024-11-27 23:22:23,827 INFO L226 Difference]: Without dead ends: 1622 [2024-11-27 23:22:23,828 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2780 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=855, Invalid=8651, Unknown=0, NotChecked=0, Total=9506 [2024-11-27 23:22:23,828 INFO L435 NwaCegarLoop]: 53 mSDtfsCounter, 165 mSDsluCounter, 1372 mSDsCounter, 0 mSdLazyCounter, 2651 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1425 SdHoareTripleChecker+Invalid, 2699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 2651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-27 23:22:23,828 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 1425 Invalid, 2699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 2651 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-27 23:22:23,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2024-11-27 23:22:23,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 1485. [2024-11-27 23:22:23,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1485 states, 1483 states have (on average 1.1153068105192179) internal successors, (1654), 1484 states have internal predecessors, (1654), 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) [2024-11-27 23:22:23,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 1654 transitions. [2024-11-27 23:22:23,838 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 1654 transitions. Word has length 74 [2024-11-27 23:22:23,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:22:23,838 INFO L471 AbstractCegarLoop]: Abstraction has 1485 states and 1654 transitions. [2024-11-27 23:22:23,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 69 states have (on average 3.1884057971014492) internal successors, (220), 70 states have internal predecessors, (220), 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) [2024-11-27 23:22:23,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 1654 transitions. [2024-11-27 23:22:23,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-27 23:22:23,839 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:22:23,839 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:22:23,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-11-27 23:22:24,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2024-11-27 23:22:24,040 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:22:24,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:24,040 INFO L85 PathProgramCache]: Analyzing trace with hash -2004260211, now seen corresponding path program 10 times [2024-11-27 23:22:24,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:22:24,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915341703] [2024-11-27 23:22:24,041 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:22:24,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:22:24,072 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:22:24,072 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:22:24,817 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 19 proven. 279 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:22:24,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:22:24,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915341703] [2024-11-27 23:22:24,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915341703] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:22:24,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80509066] [2024-11-27 23:22:24,818 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:22:24,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:24,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:22:24,820 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:22:24,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-27 23:22:25,030 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:22:25,030 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:22:25,032 INFO L256 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-11-27 23:22:25,034 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:22:25,129 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 13 treesize of output 9 [2024-11-27 23:22:25,177 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 19 proven. 279 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:22:25,177 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:22:25,225 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 13 [2024-11-27 23:22:25,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-27 23:22:25,339 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 19 proven. 279 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:22:25,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80509066] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:22:25,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:22:25,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 29 [2024-11-27 23:22:25,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489151704] [2024-11-27 23:22:25,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:22:25,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-27 23:22:25,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:22:25,340 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-27 23:22:25,340 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=745, Unknown=0, NotChecked=0, Total=812 [2024-11-27 23:22:25,340 INFO L87 Difference]: Start difference. First operand 1485 states and 1654 transitions. Second operand has 29 states, 29 states have (on average 3.0689655172413794) internal successors, (89), 29 states have internal predecessors, (89), 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) [2024-11-27 23:22:26,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:22:26,423 INFO L93 Difference]: Finished difference Result 1902 states and 2108 transitions. [2024-11-27 23:22:26,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-27 23:22:26,423 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.0689655172413794) internal successors, (89), 29 states have internal predecessors, (89), 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) Word has length 80 [2024-11-27 23:22:26,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:22:26,426 INFO L225 Difference]: With dead ends: 1902 [2024-11-27 23:22:26,426 INFO L226 Difference]: Without dead ends: 1869 [2024-11-27 23:22:26,427 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=103, Invalid=1303, Unknown=0, NotChecked=0, Total=1406 [2024-11-27 23:22:26,427 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 44 mSDsluCounter, 1458 mSDsCounter, 0 mSdLazyCounter, 2172 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 1524 SdHoareTripleChecker+Invalid, 2190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-27 23:22:26,427 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 1524 Invalid, 2190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2172 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-27 23:22:26,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1869 states. [2024-11-27 23:22:26,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1869 to 1727. [2024-11-27 23:22:26,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1727 states, 1725 states have (on average 1.1205797101449275) internal successors, (1933), 1726 states have internal predecessors, (1933), 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) [2024-11-27 23:22:26,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1727 states to 1727 states and 1933 transitions. [2024-11-27 23:22:26,445 INFO L78 Accepts]: Start accepts. Automaton has 1727 states and 1933 transitions. Word has length 80 [2024-11-27 23:22:26,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:22:26,445 INFO L471 AbstractCegarLoop]: Abstraction has 1727 states and 1933 transitions. [2024-11-27 23:22:26,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.0689655172413794) internal successors, (89), 29 states have internal predecessors, (89), 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) [2024-11-27 23:22:26,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1727 states and 1933 transitions. [2024-11-27 23:22:26,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-27 23:22:26,446 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:22:26,447 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:22:26,453 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-27 23:22:26,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:26,647 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:22:26,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:26,647 INFO L85 PathProgramCache]: Analyzing trace with hash 746214836, now seen corresponding path program 9 times [2024-11-27 23:22:26,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:22:26,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050510266] [2024-11-27 23:22:26,648 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:22:26,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:22:26,705 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-27 23:22:26,705 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:22:28,184 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 141 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:22:28,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:22:28,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050510266] [2024-11-27 23:22:28,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050510266] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:22:28,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039901187] [2024-11-27 23:22:28,184 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:22:28,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:28,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:22:28,186 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:22:28,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-27 23:22:29,068 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-27 23:22:29,068 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:22:29,073 INFO L256 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-11-27 23:22:29,075 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:22:29,375 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 13 treesize of output 9 [2024-11-27 23:22:29,934 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 7 treesize of output 3 [2024-11-27 23:22:29,990 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 56 proven. 203 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 23:22:29,990 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:22:30,126 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 13 [2024-11-27 23:22:30,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-27 23:22:30,273 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 56 proven. 203 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 23:22:30,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039901187] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:22:30,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:22:30,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 23, 23] total 52 [2024-11-27 23:22:30,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800370927] [2024-11-27 23:22:30,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:22:30,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-27 23:22:30,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:22:30,275 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-27 23:22:30,275 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=2478, Unknown=0, NotChecked=0, Total=2652 [2024-11-27 23:22:30,275 INFO L87 Difference]: Start difference. First operand 1727 states and 1933 transitions. Second operand has 52 states, 52 states have (on average 3.1346153846153846) internal successors, (163), 52 states have internal predecessors, (163), 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) [2024-11-27 23:22:32,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:22:32,813 INFO L93 Difference]: Finished difference Result 2409 states and 2684 transitions. [2024-11-27 23:22:32,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-27 23:22:32,814 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 3.1346153846153846) internal successors, (163), 52 states have internal predecessors, (163), 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) Word has length 82 [2024-11-27 23:22:32,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:22:32,817 INFO L225 Difference]: With dead ends: 2409 [2024-11-27 23:22:32,817 INFO L226 Difference]: Without dead ends: 2328 [2024-11-27 23:22:32,817 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1398 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=465, Invalid=6507, Unknown=0, NotChecked=0, Total=6972 [2024-11-27 23:22:32,818 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 61 mSDsluCounter, 1247 mSDsCounter, 0 mSdLazyCounter, 2786 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 2806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 2786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:22:32,818 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 1288 Invalid, 2806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 2786 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-27 23:22:32,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2328 states. [2024-11-27 23:22:32,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2328 to 2020. [2024-11-27 23:22:32,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2020 states, 2018 states have (on average 1.1268582755203171) internal successors, (2274), 2019 states have internal predecessors, (2274), 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) [2024-11-27 23:22:32,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2020 states to 2020 states and 2274 transitions. [2024-11-27 23:22:32,843 INFO L78 Accepts]: Start accepts. Automaton has 2020 states and 2274 transitions. Word has length 82 [2024-11-27 23:22:32,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:22:32,843 INFO L471 AbstractCegarLoop]: Abstraction has 2020 states and 2274 transitions. [2024-11-27 23:22:32,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 3.1346153846153846) internal successors, (163), 52 states have internal predecessors, (163), 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) [2024-11-27 23:22:32,843 INFO L276 IsEmpty]: Start isEmpty. Operand 2020 states and 2274 transitions. [2024-11-27 23:22:32,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-27 23:22:32,845 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:22:32,846 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:22:32,859 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-27 23:22:33,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:33,046 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:22:33,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:33,047 INFO L85 PathProgramCache]: Analyzing trace with hash -126236816, now seen corresponding path program 7 times [2024-11-27 23:22:33,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:22:33,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282089121] [2024-11-27 23:22:33,047 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:22:33,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:22:33,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:22:34,187 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 66 proven. 158 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:22:34,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:22:34,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282089121] [2024-11-27 23:22:34,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282089121] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:22:34,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93210407] [2024-11-27 23:22:34,188 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:22:34,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:34,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:22:34,191 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:22:34,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-27 23:22:34,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:22:34,418 INFO L256 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 87 conjuncts are in the unsatisfiable core [2024-11-27 23:22:34,432 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:22:34,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-27 23:22:34,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2024-11-27 23:22:36,744 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 91 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:22:36,744 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:22:38,687 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 121 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:22:38,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93210407] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:22:38,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:22:38,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 26] total 75 [2024-11-27 23:22:38,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285179159] [2024-11-27 23:22:38,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:22:38,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-11-27 23:22:38,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:22:38,688 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-11-27 23:22:38,689 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=611, Invalid=5089, Unknown=0, NotChecked=0, Total=5700 [2024-11-27 23:22:38,689 INFO L87 Difference]: Start difference. First operand 2020 states and 2274 transitions. Second operand has 76 states, 75 states have (on average 3.2533333333333334) internal successors, (244), 76 states have internal predecessors, (244), 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) [2024-11-27 23:22:42,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:22:42,434 INFO L93 Difference]: Finished difference Result 2495 states and 2755 transitions. [2024-11-27 23:22:42,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-27 23:22:42,435 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 75 states have (on average 3.2533333333333334) internal successors, (244), 76 states have internal predecessors, (244), 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) Word has length 82 [2024-11-27 23:22:42,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:22:42,440 INFO L225 Difference]: With dead ends: 2495 [2024-11-27 23:22:42,440 INFO L226 Difference]: Without dead ends: 2283 [2024-11-27 23:22:42,441 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3473 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=1335, Invalid=11321, Unknown=0, NotChecked=0, Total=12656 [2024-11-27 23:22:42,442 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 169 mSDsluCounter, 1519 mSDsCounter, 0 mSdLazyCounter, 3091 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 3139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 3091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-27 23:22:42,442 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 1587 Invalid, 3139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 3091 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-27 23:22:42,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2283 states. [2024-11-27 23:22:42,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2283 to 1698. [2024-11-27 23:22:42,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1698 states, 1696 states have (on average 1.1084905660377358) internal successors, (1880), 1697 states have internal predecessors, (1880), 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) [2024-11-27 23:22:42,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1698 states to 1698 states and 1880 transitions. [2024-11-27 23:22:42,458 INFO L78 Accepts]: Start accepts. Automaton has 1698 states and 1880 transitions. Word has length 82 [2024-11-27 23:22:42,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:22:42,459 INFO L471 AbstractCegarLoop]: Abstraction has 1698 states and 1880 transitions. [2024-11-27 23:22:42,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 75 states have (on average 3.2533333333333334) internal successors, (244), 76 states have internal predecessors, (244), 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) [2024-11-27 23:22:42,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1698 states and 1880 transitions. [2024-11-27 23:22:42,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-27 23:22:42,460 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:22:42,460 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:22:42,468 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-27 23:22:42,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2024-11-27 23:22:42,661 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:22:42,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:42,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1683511796, now seen corresponding path program 11 times [2024-11-27 23:22:42,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:22:42,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250989749] [2024-11-27 23:22:42,661 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:22:42,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:22:42,694 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-27 23:22:42,694 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:22:43,554 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 156 proven. 179 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:22:43,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:22:43,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250989749] [2024-11-27 23:22:43,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250989749] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:22:43,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696410398] [2024-11-27 23:22:43,554 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:22:43,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:43,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:22:43,556 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:22:43,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-27 23:22:43,816 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-27 23:22:43,816 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:22:43,819 INFO L256 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-27 23:22:43,821 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:22:43,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-27 23:22:44,386 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 153 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:22:44,386 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:22:45,733 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 153 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:22:45,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696410398] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:22:45,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:22:45,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 63 [2024-11-27 23:22:45,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409519284] [2024-11-27 23:22:45,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:22:45,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-27 23:22:45,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:22:45,734 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-27 23:22:45,735 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=606, Invalid=3426, Unknown=0, NotChecked=0, Total=4032 [2024-11-27 23:22:45,735 INFO L87 Difference]: Start difference. First operand 1698 states and 1880 transitions. Second operand has 64 states, 63 states have (on average 3.3968253968253967) internal successors, (214), 64 states have internal predecessors, (214), 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) [2024-11-27 23:22:46,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:22:46,923 INFO L93 Difference]: Finished difference Result 1882 states and 2072 transitions. [2024-11-27 23:22:46,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-27 23:22:46,923 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 3.3968253968253967) internal successors, (214), 64 states have internal predecessors, (214), 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) Word has length 84 [2024-11-27 23:22:46,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:22:46,928 INFO L225 Difference]: With dead ends: 1882 [2024-11-27 23:22:46,928 INFO L226 Difference]: Without dead ends: 1882 [2024-11-27 23:22:46,929 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1647 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=644, Invalid=3516, Unknown=0, NotChecked=0, Total=4160 [2024-11-27 23:22:46,930 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 146 mSDsluCounter, 1322 mSDsCounter, 0 mSdLazyCounter, 2344 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 1390 SdHoareTripleChecker+Invalid, 2375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:22:46,930 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 1390 Invalid, 2375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 2344 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-27 23:22:46,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1882 states. [2024-11-27 23:22:46,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1882 to 1701. [2024-11-27 23:22:46,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1701 states, 1699 states have (on average 1.1082989994114185) internal successors, (1883), 1700 states have internal predecessors, (1883), 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) [2024-11-27 23:22:46,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1701 states to 1701 states and 1883 transitions. [2024-11-27 23:22:46,946 INFO L78 Accepts]: Start accepts. Automaton has 1701 states and 1883 transitions. Word has length 84 [2024-11-27 23:22:46,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:22:46,946 INFO L471 AbstractCegarLoop]: Abstraction has 1701 states and 1883 transitions. [2024-11-27 23:22:46,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 3.3968253968253967) internal successors, (214), 64 states have internal predecessors, (214), 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) [2024-11-27 23:22:46,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1701 states and 1883 transitions. [2024-11-27 23:22:46,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-27 23:22:46,948 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:22:46,948 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:22:46,958 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-27 23:22:47,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2024-11-27 23:22:47,149 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:22:47,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:47,149 INFO L85 PathProgramCache]: Analyzing trace with hash -36968028, now seen corresponding path program 8 times [2024-11-27 23:22:47,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:22:47,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56332955] [2024-11-27 23:22:47,149 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:22:47,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:22:47,171 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:22:47,171 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:22:48,224 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 29 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:22:48,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:22:48,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56332955] [2024-11-27 23:22:48,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56332955] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:22:48,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191428754] [2024-11-27 23:22:48,224 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:22:48,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:48,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:22:48,227 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:22:48,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-27 23:22:48,458 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:22:48,458 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:22:48,461 INFO L256 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 115 conjuncts are in the unsatisfiable core [2024-11-27 23:22:48,464 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:22:48,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-27 23:22:51,285 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 159 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:22:51,285 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:22:53,980 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 159 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:22:53,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191428754] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:22:53,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:22:53,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 28, 29] total 80 [2024-11-27 23:22:53,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585738819] [2024-11-27 23:22:53,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:22:53,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2024-11-27 23:22:53,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:22:53,981 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2024-11-27 23:22:53,981 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=571, Invalid=5909, Unknown=0, NotChecked=0, Total=6480 [2024-11-27 23:22:53,982 INFO L87 Difference]: Start difference. First operand 1701 states and 1883 transitions. Second operand has 81 states, 80 states have (on average 3.125) internal successors, (250), 81 states have internal predecessors, (250), 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) [2024-11-27 23:23:00,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:23:00,492 INFO L93 Difference]: Finished difference Result 2511 states and 2724 transitions. [2024-11-27 23:23:00,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-11-27 23:23:00,493 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 80 states have (on average 3.125) internal successors, (250), 81 states have internal predecessors, (250), 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) Word has length 84 [2024-11-27 23:23:00,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:23:00,498 INFO L225 Difference]: With dead ends: 2511 [2024-11-27 23:23:00,498 INFO L226 Difference]: Without dead ends: 2347 [2024-11-27 23:23:00,499 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4943 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=1440, Invalid=15852, Unknown=0, NotChecked=0, Total=17292 [2024-11-27 23:23:00,499 INFO L435 NwaCegarLoop]: 75 mSDtfsCounter, 272 mSDsluCounter, 2369 mSDsCounter, 0 mSdLazyCounter, 5549 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 2444 SdHoareTripleChecker+Invalid, 5593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 5549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:23:00,500 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 2444 Invalid, 5593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 5549 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-27 23:23:00,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2347 states. [2024-11-27 23:23:00,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2347 to 1743. [2024-11-27 23:23:00,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1743 states, 1741 states have (on average 1.106260769672602) internal successors, (1926), 1742 states have internal predecessors, (1926), 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) [2024-11-27 23:23:00,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1743 states to 1743 states and 1926 transitions. [2024-11-27 23:23:00,518 INFO L78 Accepts]: Start accepts. Automaton has 1743 states and 1926 transitions. Word has length 84 [2024-11-27 23:23:00,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:23:00,518 INFO L471 AbstractCegarLoop]: Abstraction has 1743 states and 1926 transitions. [2024-11-27 23:23:00,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 80 states have (on average 3.125) internal successors, (250), 81 states have internal predecessors, (250), 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) [2024-11-27 23:23:00,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1743 states and 1926 transitions. [2024-11-27 23:23:00,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-27 23:23:00,520 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:23:00,521 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:00,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-27 23:23:00,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2024-11-27 23:23:00,722 INFO L396 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:23:00,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:00,722 INFO L85 PathProgramCache]: Analyzing trace with hash 330908240, now seen corresponding path program 9 times [2024-11-27 23:23:00,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:23:00,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19249056] [2024-11-27 23:23:00,723 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:23:00,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:23:00,779 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-27 23:23:00,779 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:23:02,042 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 21 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:23:02,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:23:02,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19249056] [2024-11-27 23:23:02,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19249056] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:23:02,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865476542] [2024-11-27 23:23:02,042 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:23:02,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:23:02,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:23:02,045 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:23:02,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-27 23:23:02,591 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-27 23:23:02,591 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:23:02,596 INFO L256 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 124 conjuncts are in the unsatisfiable core [2024-11-27 23:23:02,600 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:23:02,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-27 23:23:05,252 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 149 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:23:05,252 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:23:07,544 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 149 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:23:07,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865476542] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:23:07,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:23:07,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 85 [2024-11-27 23:23:07,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911133441] [2024-11-27 23:23:07,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:23:07,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2024-11-27 23:23:07,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:23:07,546 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2024-11-27 23:23:07,546 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=696, Invalid=6614, Unknown=0, NotChecked=0, Total=7310 [2024-11-27 23:23:07,547 INFO L87 Difference]: Start difference. First operand 1743 states and 1926 transitions. Second operand has 86 states, 85 states have (on average 2.976470588235294) internal successors, (253), 86 states have internal predecessors, (253), 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) [2024-11-27 23:23:13,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:23:13,803 INFO L93 Difference]: Finished difference Result 2270 states and 2469 transitions. [2024-11-27 23:23:13,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2024-11-27 23:23:13,804 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 85 states have (on average 2.976470588235294) internal successors, (253), 86 states have internal predecessors, (253), 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) Word has length 85 [2024-11-27 23:23:13,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:23:13,807 INFO L225 Difference]: With dead ends: 2270 [2024-11-27 23:23:13,807 INFO L226 Difference]: Without dead ends: 2115 [2024-11-27 23:23:13,808 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5360 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=1557, Invalid=15735, Unknown=0, NotChecked=0, Total=17292 [2024-11-27 23:23:13,808 INFO L435 NwaCegarLoop]: 72 mSDtfsCounter, 315 mSDsluCounter, 2264 mSDsCounter, 0 mSdLazyCounter, 5366 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 2336 SdHoareTripleChecker+Invalid, 5411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 5366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:23:13,808 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 2336 Invalid, 5411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 5366 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-27 23:23:13,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2115 states. [2024-11-27 23:23:13,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2115 to 1749. [2024-11-27 23:23:13,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1749 states, 1747 states have (on average 1.1053234115626789) internal successors, (1931), 1748 states have internal predecessors, (1931), 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) [2024-11-27 23:23:13,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1749 states to 1749 states and 1931 transitions. [2024-11-27 23:23:13,825 INFO L78 Accepts]: Start accepts. Automaton has 1749 states and 1931 transitions. Word has length 85 [2024-11-27 23:23:13,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:23:13,826 INFO L471 AbstractCegarLoop]: Abstraction has 1749 states and 1931 transitions. [2024-11-27 23:23:13,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 85 states have (on average 2.976470588235294) internal successors, (253), 86 states have internal predecessors, (253), 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) [2024-11-27 23:23:13,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states and 1931 transitions. [2024-11-27 23:23:13,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-27 23:23:13,828 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:23:13,828 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:13,842 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-11-27 23:23:14,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2024-11-27 23:23:14,029 INFO L396 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:23:14,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:14,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1946929691, now seen corresponding path program 10 times [2024-11-27 23:23:14,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:23:14,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249087799] [2024-11-27 23:23:14,030 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:23:14,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:23:14,066 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:23:14,067 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:23:15,187 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 91 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:23:15,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:23:15,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249087799] [2024-11-27 23:23:15,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249087799] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:23:15,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861399650] [2024-11-27 23:23:15,187 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:23:15,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:23:15,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:23:15,189 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:23:15,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-27 23:23:15,843 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:23:15,843 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:23:15,847 INFO L256 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 147 conjuncts are in the unsatisfiable core [2024-11-27 23:23:15,850 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:23:16,381 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 [2024-11-27 23:23:17,132 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 27 proven. 264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:23:17,132 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:23:17,746 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 13 [2024-11-27 23:23:17,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-27 23:23:18,408 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 27 proven. 264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:23:18,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861399650] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:23:18,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:23:18,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 71 [2024-11-27 23:23:18,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634496673] [2024-11-27 23:23:18,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:23:18,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-11-27 23:23:18,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:23:18,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-11-27 23:23:18,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=4771, Unknown=0, NotChecked=0, Total=4970 [2024-11-27 23:23:18,410 INFO L87 Difference]: Start difference. First operand 1749 states and 1931 transitions. Second operand has 71 states, 71 states have (on average 3.4788732394366195) internal successors, (247), 71 states have internal predecessors, (247), 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) [2024-11-27 23:23:29,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:23:29,828 INFO L93 Difference]: Finished difference Result 2725 states and 2973 transitions. [2024-11-27 23:23:29,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2024-11-27 23:23:29,829 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 3.4788732394366195) internal successors, (247), 71 states have internal predecessors, (247), 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) Word has length 86 [2024-11-27 23:23:29,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:23:29,833 INFO L225 Difference]: With dead ends: 2725 [2024-11-27 23:23:29,833 INFO L226 Difference]: Without dead ends: 2458 [2024-11-27 23:23:29,834 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6169 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=734, Invalid=26656, Unknown=0, NotChecked=0, Total=27390 [2024-11-27 23:23:29,835 INFO L435 NwaCegarLoop]: 101 mSDtfsCounter, 106 mSDsluCounter, 4645 mSDsCounter, 0 mSdLazyCounter, 11993 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 4746 SdHoareTripleChecker+Invalid, 12011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 11993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:23:29,835 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 4746 Invalid, 12011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 11993 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2024-11-27 23:23:29,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2458 states. [2024-11-27 23:23:29,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2458 to 2040. [2024-11-27 23:23:29,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2040 states, 2038 states have (on average 1.1108930323846908) internal successors, (2264), 2039 states have internal predecessors, (2264), 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) [2024-11-27 23:23:29,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2040 states to 2040 states and 2264 transitions. [2024-11-27 23:23:29,853 INFO L78 Accepts]: Start accepts. Automaton has 2040 states and 2264 transitions. Word has length 86 [2024-11-27 23:23:29,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:23:29,854 INFO L471 AbstractCegarLoop]: Abstraction has 2040 states and 2264 transitions. [2024-11-27 23:23:29,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 3.4788732394366195) internal successors, (247), 71 states have internal predecessors, (247), 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) [2024-11-27 23:23:29,854 INFO L276 IsEmpty]: Start isEmpty. Operand 2040 states and 2264 transitions. [2024-11-27 23:23:29,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-27 23:23:29,856 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:23:29,857 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:29,870 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-11-27 23:23:30,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2024-11-27 23:23:30,058 INFO L396 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:23:30,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:30,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1166816244, now seen corresponding path program 12 times [2024-11-27 23:23:30,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:23:30,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465996835] [2024-11-27 23:23:30,058 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:23:30,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:23:30,142 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-11-27 23:23:30,142 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:23:31,076 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 120 proven. 246 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:23:31,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:23:31,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465996835] [2024-11-27 23:23:31,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465996835] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:23:31,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227454373] [2024-11-27 23:23:31,076 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:23:31,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:23:31,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:23:31,078 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:23:31,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-27 23:23:31,434 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-11-27 23:23:31,434 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:23:31,436 INFO L256 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-11-27 23:23:31,444 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:23:31,846 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 13 treesize of output 9 [2024-11-27 23:23:32,441 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 21 proven. 345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:23:32,441 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:23:32,501 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 13 [2024-11-27 23:23:32,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-27 23:23:32,680 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 21 proven. 345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:23:32,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227454373] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:23:32,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:23:32,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28, 28] total 58 [2024-11-27 23:23:32,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557433136] [2024-11-27 23:23:32,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:23:32,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-27 23:23:32,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:23:32,682 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-27 23:23:32,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=3088, Unknown=0, NotChecked=0, Total=3306 [2024-11-27 23:23:32,682 INFO L87 Difference]: Start difference. First operand 2040 states and 2264 transitions. Second operand has 58 states, 58 states have (on average 3.0689655172413794) internal successors, (178), 58 states have internal predecessors, (178), 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) [2024-11-27 23:23:36,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:23:36,644 INFO L93 Difference]: Finished difference Result 2849 states and 3138 transitions. [2024-11-27 23:23:36,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-27 23:23:36,645 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 3.0689655172413794) internal successors, (178), 58 states have internal predecessors, (178), 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) Word has length 87 [2024-11-27 23:23:36,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:23:36,648 INFO L225 Difference]: With dead ends: 2849 [2024-11-27 23:23:36,648 INFO L226 Difference]: Without dead ends: 2813 [2024-11-27 23:23:36,648 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2504 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=827, Invalid=10303, Unknown=0, NotChecked=0, Total=11130 [2024-11-27 23:23:36,649 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 297 mSDsluCounter, 1880 mSDsCounter, 0 mSdLazyCounter, 4120 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 1939 SdHoareTripleChecker+Invalid, 4203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 4120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:23:36,649 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 1939 Invalid, 4203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 4120 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-27 23:23:36,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2813 states. [2024-11-27 23:23:36,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2813 to 2434. [2024-11-27 23:23:36,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2434 states, 2432 states have (on average 1.115953947368421) internal successors, (2714), 2433 states have internal predecessors, (2714), 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) [2024-11-27 23:23:36,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2434 states to 2434 states and 2714 transitions. [2024-11-27 23:23:36,667 INFO L78 Accepts]: Start accepts. Automaton has 2434 states and 2714 transitions. Word has length 87 [2024-11-27 23:23:36,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:23:36,667 INFO L471 AbstractCegarLoop]: Abstraction has 2434 states and 2714 transitions. [2024-11-27 23:23:36,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 3.0689655172413794) internal successors, (178), 58 states have internal predecessors, (178), 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) [2024-11-27 23:23:36,667 INFO L276 IsEmpty]: Start isEmpty. Operand 2434 states and 2714 transitions. [2024-11-27 23:23:36,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-27 23:23:36,668 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:23:36,668 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:36,677 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-11-27 23:23:36,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2024-11-27 23:23:36,869 INFO L396 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:23:36,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:36,869 INFO L85 PathProgramCache]: Analyzing trace with hash 274577156, now seen corresponding path program 10 times [2024-11-27 23:23:36,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:23:36,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564827029] [2024-11-27 23:23:36,869 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:23:36,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:23:36,977 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:23:36,977 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:23:38,379 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 33 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:23:38,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:23:38,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564827029] [2024-11-27 23:23:38,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564827029] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:23:38,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469015754] [2024-11-27 23:23:38,379 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:23:38,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:23:38,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:23:38,381 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:23:38,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-27 23:23:38,820 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:23:38,820 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:23:38,824 INFO L256 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 126 conjuncts are in the unsatisfiable core [2024-11-27 23:23:38,829 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:23:38,880 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2024-11-27 23:23:38,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-27 23:23:41,333 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 51 proven. 123 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:23:41,333 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:23:43,893 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 81 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:23:43,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469015754] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:23:43,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:23:43,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 25, 25] total 77 [2024-11-27 23:23:43,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171067348] [2024-11-27 23:23:43,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:23:43,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-11-27 23:23:43,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:23:43,894 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-11-27 23:23:43,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=478, Invalid=5528, Unknown=0, NotChecked=0, Total=6006 [2024-11-27 23:23:43,895 INFO L87 Difference]: Start difference. First operand 2434 states and 2714 transitions. Second operand has 78 states, 77 states have (on average 3.3636363636363638) internal successors, (259), 78 states have internal predecessors, (259), 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) [2024-11-27 23:23:50,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:23:50,206 INFO L93 Difference]: Finished difference Result 3003 states and 3291 transitions. [2024-11-27 23:23:50,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-11-27 23:23:50,206 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 77 states have (on average 3.3636363636363638) internal successors, (259), 78 states have internal predecessors, (259), 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) Word has length 87 [2024-11-27 23:23:50,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:23:50,210 INFO L225 Difference]: With dead ends: 3003 [2024-11-27 23:23:50,210 INFO L226 Difference]: Without dead ends: 2819 [2024-11-27 23:23:50,210 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4289 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=1424, Invalid=16132, Unknown=0, NotChecked=0, Total=17556 [2024-11-27 23:23:50,211 INFO L435 NwaCegarLoop]: 65 mSDtfsCounter, 166 mSDsluCounter, 1983 mSDsCounter, 0 mSdLazyCounter, 4487 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 2048 SdHoareTripleChecker+Invalid, 4528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 4487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-27 23:23:50,211 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 2048 Invalid, 4528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 4487 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-27 23:23:50,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2819 states. [2024-11-27 23:23:50,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2819 to 2442. [2024-11-27 23:23:50,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2442 states, 2440 states have (on average 1.1155737704918032) internal successors, (2722), 2441 states have internal predecessors, (2722), 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) [2024-11-27 23:23:50,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2442 states to 2442 states and 2722 transitions. [2024-11-27 23:23:50,235 INFO L78 Accepts]: Start accepts. Automaton has 2442 states and 2722 transitions. Word has length 87 [2024-11-27 23:23:50,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:23:50,235 INFO L471 AbstractCegarLoop]: Abstraction has 2442 states and 2722 transitions. [2024-11-27 23:23:50,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 77 states have (on average 3.3636363636363638) internal successors, (259), 78 states have internal predecessors, (259), 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) [2024-11-27 23:23:50,235 INFO L276 IsEmpty]: Start isEmpty. Operand 2442 states and 2722 transitions. [2024-11-27 23:23:50,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-27 23:23:50,238 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:23:50,238 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:50,250 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-11-27 23:23:50,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2024-11-27 23:23:50,439 INFO L396 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:23:50,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:50,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1411903375, now seen corresponding path program 11 times [2024-11-27 23:23:50,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:23:50,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219177723] [2024-11-27 23:23:50,440 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:23:50,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:23:50,493 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-27 23:23:50,494 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:23:51,888 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 98 proven. 194 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:23:51,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:23:51,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219177723] [2024-11-27 23:23:51,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219177723] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:23:51,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578837162] [2024-11-27 23:23:51,889 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:23:51,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:23:51,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:23:51,890 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:23:51,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-27 23:23:52,516 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-27 23:23:52,516 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:23:52,521 INFO L256 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 117 conjuncts are in the unsatisfiable core [2024-11-27 23:23:52,524 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:23:52,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-27 23:23:52,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2024-11-27 23:23:55,343 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 1 proven. 291 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:23:55,344 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:23:57,987 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 154 proven. 138 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:23:57,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578837162] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:23:57,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:23:57,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 26, 27] total 81 [2024-11-27 23:23:57,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342390456] [2024-11-27 23:23:57,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:23:57,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2024-11-27 23:23:57,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:23:57,988 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2024-11-27 23:23:57,989 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=581, Invalid=6061, Unknown=0, NotChecked=0, Total=6642 [2024-11-27 23:23:57,989 INFO L87 Difference]: Start difference. First operand 2442 states and 2722 transitions. Second operand has 82 states, 81 states have (on average 3.419753086419753) internal successors, (277), 82 states have internal predecessors, (277), 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) [2024-11-27 23:24:04,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:24:04,341 INFO L93 Difference]: Finished difference Result 2701 states and 2983 transitions. [2024-11-27 23:24:04,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-11-27 23:24:04,341 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 81 states have (on average 3.419753086419753) internal successors, (277), 82 states have internal predecessors, (277), 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) Word has length 93 [2024-11-27 23:24:04,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:24:04,345 INFO L225 Difference]: With dead ends: 2701 [2024-11-27 23:24:04,345 INFO L226 Difference]: Without dead ends: 2701 [2024-11-27 23:24:04,346 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3870 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=1422, Invalid=15348, Unknown=0, NotChecked=0, Total=16770 [2024-11-27 23:24:04,346 INFO L435 NwaCegarLoop]: 61 mSDtfsCounter, 197 mSDsluCounter, 1987 mSDsCounter, 0 mSdLazyCounter, 4824 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 2048 SdHoareTripleChecker+Invalid, 4881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 4824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-27 23:24:04,346 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 2048 Invalid, 4881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 4824 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-27 23:24:04,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2701 states. [2024-11-27 23:24:04,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2701 to 2455. [2024-11-27 23:24:04,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2455 states, 2453 states have (on average 1.1157766000815328) internal successors, (2737), 2454 states have internal predecessors, (2737), 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) [2024-11-27 23:24:04,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2455 states to 2455 states and 2737 transitions. [2024-11-27 23:24:04,361 INFO L78 Accepts]: Start accepts. Automaton has 2455 states and 2737 transitions. Word has length 93 [2024-11-27 23:24:04,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:24:04,361 INFO L471 AbstractCegarLoop]: Abstraction has 2455 states and 2737 transitions. [2024-11-27 23:24:04,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 81 states have (on average 3.419753086419753) internal successors, (277), 82 states have internal predecessors, (277), 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) [2024-11-27 23:24:04,361 INFO L276 IsEmpty]: Start isEmpty. Operand 2455 states and 2737 transitions. [2024-11-27 23:24:04,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-27 23:24:04,363 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:24:04,363 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:24:04,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2024-11-27 23:24:04,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2024-11-27 23:24:04,563 INFO L396 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:24:04,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:04,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1278856037, now seen corresponding path program 13 times [2024-11-27 23:24:04,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:04,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446845535] [2024-11-27 23:24:04,564 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:24:04,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:04,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:05,762 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 153 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:05,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:05,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446845535] [2024-11-27 23:24:05,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446845535] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:24:05,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473885766] [2024-11-27 23:24:05,762 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:24:05,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:05,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:24:05,764 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:24:05,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-11-27 23:24:06,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:06,034 INFO L256 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-11-27 23:24:06,036 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:24:06,554 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 13 treesize of output 9 [2024-11-27 23:24:07,272 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 23 proven. 418 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:07,272 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:24:07,334 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 13 [2024-11-27 23:24:07,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-27 23:24:07,519 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 23 proven. 418 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:07,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473885766] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:24:07,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:24:07,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 61 [2024-11-27 23:24:07,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672700812] [2024-11-27 23:24:07,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:24:07,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-11-27 23:24:07,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:07,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-11-27 23:24:07,521 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=3484, Unknown=0, NotChecked=0, Total=3660 [2024-11-27 23:24:07,521 INFO L87 Difference]: Start difference. First operand 2455 states and 2737 transitions. Second operand has 61 states, 61 states have (on average 3.1475409836065573) internal successors, (192), 61 states have internal predecessors, (192), 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) [2024-11-27 23:24:12,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:24:12,337 INFO L93 Difference]: Finished difference Result 3382 states and 3744 transitions. [2024-11-27 23:24:12,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-11-27 23:24:12,337 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 3.1475409836065573) internal successors, (192), 61 states have internal predecessors, (192), 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) Word has length 94 [2024-11-27 23:24:12,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:24:12,343 INFO L225 Difference]: With dead ends: 3382 [2024-11-27 23:24:12,343 INFO L226 Difference]: Without dead ends: 3343 [2024-11-27 23:24:12,344 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1807 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=549, Invalid=9753, Unknown=0, NotChecked=0, Total=10302 [2024-11-27 23:24:12,344 INFO L435 NwaCegarLoop]: 73 mSDtfsCounter, 233 mSDsluCounter, 3124 mSDsCounter, 0 mSdLazyCounter, 6112 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 3197 SdHoareTripleChecker+Invalid, 6160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 6112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:24:12,345 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 3197 Invalid, 6160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 6112 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-27 23:24:12,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2024-11-27 23:24:12,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 2852. [2024-11-27 23:24:12,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2852 states, 2850 states have (on average 1.1224561403508773) internal successors, (3199), 2851 states have internal predecessors, (3199), 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) [2024-11-27 23:24:12,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2852 states to 2852 states and 3199 transitions. [2024-11-27 23:24:12,379 INFO L78 Accepts]: Start accepts. Automaton has 2852 states and 3199 transitions. Word has length 94 [2024-11-27 23:24:12,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:24:12,379 INFO L471 AbstractCegarLoop]: Abstraction has 2852 states and 3199 transitions. [2024-11-27 23:24:12,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 3.1475409836065573) internal successors, (192), 61 states have internal predecessors, (192), 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) [2024-11-27 23:24:12,379 INFO L276 IsEmpty]: Start isEmpty. Operand 2852 states and 3199 transitions. [2024-11-27 23:24:12,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-27 23:24:12,382 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:24:12,382 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:24:12,394 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2024-11-27 23:24:12,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:12,583 INFO L396 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:24:12,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:12,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1728718908, now seen corresponding path program 11 times [2024-11-27 23:24:12,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:12,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461571654] [2024-11-27 23:24:12,584 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:24:12,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:12,626 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-27 23:24:12,626 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:24:14,349 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 98 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:14,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:14,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461571654] [2024-11-27 23:24:14,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461571654] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:24:14,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775984758] [2024-11-27 23:24:14,349 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:24:14,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:14,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:24:14,351 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:24:14,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-27 23:24:16,123 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-27 23:24:16,123 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:24:16,130 INFO L256 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 110 conjuncts are in the unsatisfiable core [2024-11-27 23:24:16,132 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:24:16,670 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 13 treesize of output 9 [2024-11-27 23:24:17,463 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 30 proven. 333 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:17,463 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:24:17,543 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 13 [2024-11-27 23:24:17,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-27 23:24:17,734 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 30 proven. 333 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:17,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775984758] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:24:17,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:24:17,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 27, 27] total 59 [2024-11-27 23:24:17,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8978226] [2024-11-27 23:24:17,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:24:17,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-27 23:24:17,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:17,736 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-27 23:24:17,736 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=3258, Unknown=0, NotChecked=0, Total=3422 [2024-11-27 23:24:17,736 INFO L87 Difference]: Start difference. First operand 2852 states and 3199 transitions. Second operand has 59 states, 59 states have (on average 3.2542372881355934) internal successors, (192), 59 states have internal predecessors, (192), 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) [2024-11-27 23:24:22,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:24:22,344 INFO L93 Difference]: Finished difference Result 3662 states and 4099 transitions. [2024-11-27 23:24:22,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2024-11-27 23:24:22,345 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 3.2542372881355934) internal successors, (192), 59 states have internal predecessors, (192), 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) Word has length 94 [2024-11-27 23:24:22,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:24:22,351 INFO L225 Difference]: With dead ends: 3662 [2024-11-27 23:24:22,351 INFO L226 Difference]: Without dead ends: 3469 [2024-11-27 23:24:22,352 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2208 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=538, Invalid=11018, Unknown=0, NotChecked=0, Total=11556 [2024-11-27 23:24:22,352 INFO L435 NwaCegarLoop]: 53 mSDtfsCounter, 107 mSDsluCounter, 2048 mSDsCounter, 0 mSdLazyCounter, 4359 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 2101 SdHoareTripleChecker+Invalid, 4378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 4359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:24:22,352 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 2101 Invalid, 4378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 4359 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-27 23:24:22,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3469 states. [2024-11-27 23:24:22,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3469 to 3240. [2024-11-27 23:24:22,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3240 states, 3238 states have (on average 1.1260037059913526) internal successors, (3646), 3239 states have internal predecessors, (3646), 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) [2024-11-27 23:24:22,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3240 states to 3240 states and 3646 transitions. [2024-11-27 23:24:22,390 INFO L78 Accepts]: Start accepts. Automaton has 3240 states and 3646 transitions. Word has length 94 [2024-11-27 23:24:22,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:24:22,390 INFO L471 AbstractCegarLoop]: Abstraction has 3240 states and 3646 transitions. [2024-11-27 23:24:22,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 3.2542372881355934) internal successors, (192), 59 states have internal predecessors, (192), 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) [2024-11-27 23:24:22,390 INFO L276 IsEmpty]: Start isEmpty. Operand 3240 states and 3646 transitions. [2024-11-27 23:24:22,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-27 23:24:22,393 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:24:22,394 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:24:22,409 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2024-11-27 23:24:22,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable71 [2024-11-27 23:24:22,594 INFO L396 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:24:22,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:22,595 INFO L85 PathProgramCache]: Analyzing trace with hash 478286206, now seen corresponding path program 12 times [2024-11-27 23:24:22,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:22,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004500571] [2024-11-27 23:24:22,595 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:24:22,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:22,646 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-27 23:24:22,646 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:24:24,565 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 121 proven. 228 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:24,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:24,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004500571] [2024-11-27 23:24:24,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004500571] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:24:24,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908571316] [2024-11-27 23:24:24,565 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:24:24,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:24,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:24:24,567 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:24:24,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-11-27 23:24:25,162 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-27 23:24:25,162 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:24:25,166 INFO L256 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 99 conjuncts are in the unsatisfiable core [2024-11-27 23:24:25,169 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:24:25,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2024-11-27 23:24:28,203 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 153 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:28,203 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:24:31,528 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 190 proven. 159 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:31,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908571316] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:24:31,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:24:31,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 32, 32] total 96 [2024-11-27 23:24:31,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069069876] [2024-11-27 23:24:31,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:24:31,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-11-27 23:24:31,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:31,530 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-11-27 23:24:31,530 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=753, Invalid=8559, Unknown=0, NotChecked=0, Total=9312 [2024-11-27 23:24:31,530 INFO L87 Difference]: Start difference. First operand 3240 states and 3646 transitions. Second operand has 97 states, 96 states have (on average 2.9791666666666665) internal successors, (286), 97 states have internal predecessors, (286), 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) [2024-11-27 23:24:43,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:24:43,547 INFO L93 Difference]: Finished difference Result 4242 states and 4645 transitions. [2024-11-27 23:24:43,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2024-11-27 23:24:43,548 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 96 states have (on average 2.9791666666666665) internal successors, (286), 97 states have internal predecessors, (286), 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) Word has length 96 [2024-11-27 23:24:43,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:24:43,553 INFO L225 Difference]: With dead ends: 4242 [2024-11-27 23:24:43,553 INFO L226 Difference]: Without dead ends: 3277 [2024-11-27 23:24:43,554 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11245 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=3718, Invalid=36482, Unknown=0, NotChecked=0, Total=40200 [2024-11-27 23:24:43,555 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 226 mSDsluCounter, 2029 mSDsCounter, 0 mSdLazyCounter, 4138 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 2108 SdHoareTripleChecker+Invalid, 4248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 4138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-27 23:24:43,555 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 2108 Invalid, 4248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 4138 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-27 23:24:43,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3277 states. [2024-11-27 23:24:43,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3277 to 2676. [2024-11-27 23:24:43,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2676 states, 2674 states have (on average 1.0818997756170532) internal successors, (2893), 2675 states have internal predecessors, (2893), 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) [2024-11-27 23:24:43,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2676 states to 2676 states and 2893 transitions. [2024-11-27 23:24:43,583 INFO L78 Accepts]: Start accepts. Automaton has 2676 states and 2893 transitions. Word has length 96 [2024-11-27 23:24:43,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:24:43,583 INFO L471 AbstractCegarLoop]: Abstraction has 2676 states and 2893 transitions. [2024-11-27 23:24:43,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 96 states have (on average 2.9791666666666665) internal successors, (286), 97 states have internal predecessors, (286), 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) [2024-11-27 23:24:43,584 INFO L276 IsEmpty]: Start isEmpty. Operand 2676 states and 2893 transitions. [2024-11-27 23:24:43,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-27 23:24:43,586 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:24:43,586 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:24:43,600 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2024-11-27 23:24:43,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2024-11-27 23:24:43,787 INFO L396 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:24:43,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:43,788 INFO L85 PathProgramCache]: Analyzing trace with hash 271307501, now seen corresponding path program 13 times [2024-11-27 23:24:43,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:43,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444763825] [2024-11-27 23:24:43,788 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:24:43,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:43,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:45,157 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 66 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:45,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:45,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444763825] [2024-11-27 23:24:45,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444763825] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:24:45,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459356295] [2024-11-27 23:24:45,158 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:24:45,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:45,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:24:45,159 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:24:45,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-11-27 23:24:45,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:24:45,469 INFO L256 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 161 conjuncts are in the unsatisfiable core [2024-11-27 23:24:45,472 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:24:45,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-27 23:24:48,280 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 0 proven. 269 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:48,281 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:24:50,904 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 0 proven. 269 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:50,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459356295] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:24:50,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:24:50,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 30, 31] total 86 [2024-11-27 23:24:50,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109874657] [2024-11-27 23:24:50,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:24:50,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2024-11-27 23:24:50,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:24:50,905 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2024-11-27 23:24:50,905 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=533, Invalid=6949, Unknown=0, NotChecked=0, Total=7482 [2024-11-27 23:24:50,906 INFO L87 Difference]: Start difference. First operand 2676 states and 2893 transitions. Second operand has 87 states, 86 states have (on average 3.3255813953488373) internal successors, (286), 87 states have internal predecessors, (286), 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) [2024-11-27 23:24:57,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:24:57,275 INFO L93 Difference]: Finished difference Result 3145 states and 3365 transitions. [2024-11-27 23:24:57,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-11-27 23:24:57,275 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 86 states have (on average 3.3255813953488373) internal successors, (286), 87 states have internal predecessors, (286), 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) Word has length 96 [2024-11-27 23:24:57,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:24:57,277 INFO L225 Difference]: With dead ends: 3145 [2024-11-27 23:24:57,277 INFO L226 Difference]: Without dead ends: 3048 [2024-11-27 23:24:57,278 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5652 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=1600, Invalid=17860, Unknown=0, NotChecked=0, Total=19460 [2024-11-27 23:24:57,278 INFO L435 NwaCegarLoop]: 64 mSDtfsCounter, 419 mSDsluCounter, 2463 mSDsCounter, 0 mSdLazyCounter, 5976 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 2527 SdHoareTripleChecker+Invalid, 6064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 5976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:24:57,279 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 2527 Invalid, 6064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 5976 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-27 23:24:57,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3048 states. [2024-11-27 23:24:57,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3048 to 2683. [2024-11-27 23:24:57,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2683 states, 2681 states have (on average 1.080939947780679) internal successors, (2898), 2682 states have internal predecessors, (2898), 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) [2024-11-27 23:24:57,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2683 states to 2683 states and 2898 transitions. [2024-11-27 23:24:57,298 INFO L78 Accepts]: Start accepts. Automaton has 2683 states and 2898 transitions. Word has length 96 [2024-11-27 23:24:57,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:24:57,298 INFO L471 AbstractCegarLoop]: Abstraction has 2683 states and 2898 transitions. [2024-11-27 23:24:57,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 86 states have (on average 3.3255813953488373) internal successors, (286), 87 states have internal predecessors, (286), 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) [2024-11-27 23:24:57,298 INFO L276 IsEmpty]: Start isEmpty. Operand 2683 states and 2898 transitions. [2024-11-27 23:24:57,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-27 23:24:57,300 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:24:57,300 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:24:57,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2024-11-27 23:24:57,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2024-11-27 23:24:57,500 INFO L396 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:24:57,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:24:57,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1852684238, now seen corresponding path program 14 times [2024-11-27 23:24:57,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:24:57,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619779054] [2024-11-27 23:24:57,501 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:24:57,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:24:57,521 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:24:57,521 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:24:58,585 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 67 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:24:58,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:24:58,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619779054] [2024-11-27 23:24:58,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619779054] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:24:58,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337583802] [2024-11-27 23:24:58,586 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:24:58,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:24:58,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:24:58,587 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:24:58,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-11-27 23:24:58,859 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:24:58,860 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:24:58,863 INFO L256 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 127 conjuncts are in the unsatisfiable core [2024-11-27 23:24:58,866 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:24:58,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-27 23:25:01,990 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:25:01,990 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:25:05,083 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:25:05,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337583802] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:25:05,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:25:05,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 33, 33] total 94 [2024-11-27 23:25:05,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726658519] [2024-11-27 23:25:05,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:25:05,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2024-11-27 23:25:05,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:05,085 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2024-11-27 23:25:05,085 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=757, Invalid=8173, Unknown=0, NotChecked=0, Total=8930 [2024-11-27 23:25:05,085 INFO L87 Difference]: Start difference. First operand 2683 states and 2898 transitions. Second operand has 95 states, 94 states have (on average 3.106382978723404) internal successors, (292), 95 states have internal predecessors, (292), 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) [2024-11-27 23:25:13,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:13,057 INFO L93 Difference]: Finished difference Result 3517 states and 3740 transitions. [2024-11-27 23:25:13,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2024-11-27 23:25:13,057 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 94 states have (on average 3.106382978723404) internal successors, (292), 95 states have internal predecessors, (292), 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) Word has length 98 [2024-11-27 23:25:13,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:13,059 INFO L225 Difference]: With dead ends: 3517 [2024-11-27 23:25:13,059 INFO L226 Difference]: Without dead ends: 3264 [2024-11-27 23:25:13,060 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7269 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=1973, Invalid=22519, Unknown=0, NotChecked=0, Total=24492 [2024-11-27 23:25:13,060 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 367 mSDsluCounter, 3184 mSDsCounter, 0 mSdLazyCounter, 7346 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 3268 SdHoareTripleChecker+Invalid, 7390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 7346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:13,060 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 3268 Invalid, 7390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 7346 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-27 23:25:13,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3264 states. [2024-11-27 23:25:13,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3264 to 2495. [2024-11-27 23:25:13,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2495 states, 2493 states have (on average 1.0742077817890092) internal successors, (2678), 2494 states have internal predecessors, (2678), 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) [2024-11-27 23:25:13,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2495 states to 2495 states and 2678 transitions. [2024-11-27 23:25:13,084 INFO L78 Accepts]: Start accepts. Automaton has 2495 states and 2678 transitions. Word has length 98 [2024-11-27 23:25:13,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:13,084 INFO L471 AbstractCegarLoop]: Abstraction has 2495 states and 2678 transitions. [2024-11-27 23:25:13,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 94 states have (on average 3.106382978723404) internal successors, (292), 95 states have internal predecessors, (292), 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) [2024-11-27 23:25:13,085 INFO L276 IsEmpty]: Start isEmpty. Operand 2495 states and 2678 transitions. [2024-11-27 23:25:13,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-27 23:25:13,087 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:13,087 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:13,098 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2024-11-27 23:25:13,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:13,288 INFO L396 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:25:13,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:13,289 INFO L85 PathProgramCache]: Analyzing trace with hash -767188639, now seen corresponding path program 1 times [2024-11-27 23:25:13,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:13,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540508872] [2024-11-27 23:25:13,289 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:13,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:13,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:14,534 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 120 proven. 280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:25:14,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:14,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540508872] [2024-11-27 23:25:14,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540508872] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:25:14,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282649709] [2024-11-27 23:25:14,534 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:14,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:14,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:25:14,536 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:25:14,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-11-27 23:25:14,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:14,856 INFO L256 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 164 conjuncts are in the unsatisfiable core [2024-11-27 23:25:14,860 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:25:14,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-27 23:25:17,477 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 153 proven. 247 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:25:17,477 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:25:19,889 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 190 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:25:19,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282649709] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:25:19,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:25:19,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 82 [2024-11-27 23:25:19,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64844490] [2024-11-27 23:25:19,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:25:19,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2024-11-27 23:25:19,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:19,891 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2024-11-27 23:25:19,891 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=693, Invalid=6113, Unknown=0, NotChecked=0, Total=6806 [2024-11-27 23:25:19,891 INFO L87 Difference]: Start difference. First operand 2495 states and 2678 transitions. Second operand has 83 states, 82 states have (on average 3.5609756097560976) internal successors, (292), 83 states have internal predecessors, (292), 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) [2024-11-27 23:25:24,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:24,165 INFO L93 Difference]: Finished difference Result 2929 states and 3123 transitions. [2024-11-27 23:25:24,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-11-27 23:25:24,165 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 82 states have (on average 3.5609756097560976) internal successors, (292), 83 states have internal predecessors, (292), 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) Word has length 98 [2024-11-27 23:25:24,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:24,167 INFO L225 Difference]: With dead ends: 2929 [2024-11-27 23:25:24,167 INFO L226 Difference]: Without dead ends: 2929 [2024-11-27 23:25:24,167 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4333 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=1419, Invalid=13833, Unknown=0, NotChecked=0, Total=15252 [2024-11-27 23:25:24,168 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 148 mSDsluCounter, 1717 mSDsCounter, 0 mSdLazyCounter, 3583 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 1780 SdHoareTripleChecker+Invalid, 3628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 3583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:24,168 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 1780 Invalid, 3628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 3583 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-27 23:25:24,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2929 states. [2024-11-27 23:25:24,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2929 to 2493. [2024-11-27 23:25:24,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2493 states, 2491 states have (on average 1.074267362505018) internal successors, (2676), 2492 states have internal predecessors, (2676), 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) [2024-11-27 23:25:24,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2493 states to 2493 states and 2676 transitions. [2024-11-27 23:25:24,190 INFO L78 Accepts]: Start accepts. Automaton has 2493 states and 2676 transitions. Word has length 98 [2024-11-27 23:25:24,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:24,191 INFO L471 AbstractCegarLoop]: Abstraction has 2493 states and 2676 transitions. [2024-11-27 23:25:24,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 82 states have (on average 3.5609756097560976) internal successors, (292), 83 states have internal predecessors, (292), 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) [2024-11-27 23:25:24,192 INFO L276 IsEmpty]: Start isEmpty. Operand 2493 states and 2676 transitions. [2024-11-27 23:25:24,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-27 23:25:24,194 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:24,194 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:24,206 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2024-11-27 23:25:24,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:24,395 INFO L396 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:25:24,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:24,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1106650394, now seen corresponding path program 15 times [2024-11-27 23:25:24,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:24,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124928363] [2024-11-27 23:25:24,396 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:25:24,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:24,447 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-27 23:25:24,447 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:25:25,739 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 43 proven. 180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:25:25,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:25,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124928363] [2024-11-27 23:25:25,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124928363] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:25:25,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915998709] [2024-11-27 23:25:25,740 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:25:25,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:25,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:25:25,741 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:25:25,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-11-27 23:25:26,811 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-27 23:25:26,811 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:25:26,817 INFO L256 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 144 conjuncts are in the unsatisfiable core [2024-11-27 23:25:26,821 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:25:26,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-27 23:25:29,712 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 223 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:25:29,712 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:25:32,412 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 223 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:25:32,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915998709] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:25:32,412 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:25:32,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33, 33] total 98 [2024-11-27 23:25:32,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228791875] [2024-11-27 23:25:32,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:25:32,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2024-11-27 23:25:32,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:32,414 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2024-11-27 23:25:32,414 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=893, Invalid=8809, Unknown=0, NotChecked=0, Total=9702 [2024-11-27 23:25:32,414 INFO L87 Difference]: Start difference. First operand 2493 states and 2676 transitions. Second operand has 99 states, 98 states have (on average 3.0408163265306123) internal successors, (298), 99 states have internal predecessors, (298), 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) [2024-11-27 23:25:39,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:39,625 INFO L93 Difference]: Finished difference Result 3323 states and 3524 transitions. [2024-11-27 23:25:39,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2024-11-27 23:25:39,626 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 98 states have (on average 3.0408163265306123) internal successors, (298), 99 states have internal predecessors, (298), 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) Word has length 100 [2024-11-27 23:25:39,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:39,627 INFO L225 Difference]: With dead ends: 3323 [2024-11-27 23:25:39,627 INFO L226 Difference]: Without dead ends: 3100 [2024-11-27 23:25:39,628 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7347 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=1990, Invalid=21266, Unknown=0, NotChecked=0, Total=23256 [2024-11-27 23:25:39,628 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 382 mSDsluCounter, 2845 mSDsCounter, 0 mSdLazyCounter, 6855 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 2923 SdHoareTripleChecker+Invalid, 6905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 6855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:39,628 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 2923 Invalid, 6905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 6855 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-27 23:25:39,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3100 states. [2024-11-27 23:25:39,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3100 to 2513. [2024-11-27 23:25:39,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2513 states, 2511 states have (on average 1.0728793309438471) internal successors, (2694), 2512 states have internal predecessors, (2694), 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) [2024-11-27 23:25:39,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2513 states to 2513 states and 2694 transitions. [2024-11-27 23:25:39,644 INFO L78 Accepts]: Start accepts. Automaton has 2513 states and 2694 transitions. Word has length 100 [2024-11-27 23:25:39,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:39,645 INFO L471 AbstractCegarLoop]: Abstraction has 2513 states and 2694 transitions. [2024-11-27 23:25:39,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 98 states have (on average 3.0408163265306123) internal successors, (298), 99 states have internal predecessors, (298), 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) [2024-11-27 23:25:39,645 INFO L276 IsEmpty]: Start isEmpty. Operand 2513 states and 2694 transitions. [2024-11-27 23:25:39,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-27 23:25:39,646 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:39,646 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:39,655 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2024-11-27 23:25:39,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:39,847 INFO L396 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:25:39,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:39,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1227026278, now seen corresponding path program 14 times [2024-11-27 23:25:39,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:39,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582788102] [2024-11-27 23:25:39,847 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:25:39,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:39,867 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:25:39,867 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:25:40,956 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 190 proven. 333 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:25:40,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:40,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582788102] [2024-11-27 23:25:40,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582788102] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:25:40,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709907398] [2024-11-27 23:25:40,956 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:25:40,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:40,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:25:40,959 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:25:40,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-11-27 23:25:41,235 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:25:41,235 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:25:41,238 INFO L256 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-11-27 23:25:41,240 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:25:41,796 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 13 treesize of output 9 [2024-11-27 23:25:42,575 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 25 proven. 498 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:25:42,575 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:25:42,633 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 13 [2024-11-27 23:25:42,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-27 23:25:42,822 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 25 proven. 498 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:25:42,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709907398] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:25:42,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:25:42,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32, 32] total 66 [2024-11-27 23:25:42,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856570180] [2024-11-27 23:25:42,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:25:42,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-11-27 23:25:42,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:42,824 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-11-27 23:25:42,824 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=4093, Unknown=0, NotChecked=0, Total=4290 [2024-11-27 23:25:42,824 INFO L87 Difference]: Start difference. First operand 2513 states and 2694 transitions. Second operand has 66 states, 66 states have (on average 3.121212121212121) internal successors, (206), 66 states have internal predecessors, (206), 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) [2024-11-27 23:25:46,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:46,784 INFO L93 Difference]: Finished difference Result 3240 states and 3460 transitions. [2024-11-27 23:25:46,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-27 23:25:46,785 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 3.121212121212121) internal successors, (206), 66 states have internal predecessors, (206), 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) Word has length 101 [2024-11-27 23:25:46,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:46,787 INFO L225 Difference]: With dead ends: 3240 [2024-11-27 23:25:46,787 INFO L226 Difference]: Without dead ends: 3198 [2024-11-27 23:25:46,787 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2099 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=582, Invalid=11190, Unknown=0, NotChecked=0, Total=11772 [2024-11-27 23:25:46,787 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 136 mSDsluCounter, 2280 mSDsCounter, 0 mSdLazyCounter, 4844 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 2334 SdHoareTripleChecker+Invalid, 4863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 4844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:46,788 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 2334 Invalid, 4863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 4844 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-27 23:25:46,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3198 states. [2024-11-27 23:25:46,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3198 to 3010. [2024-11-27 23:25:46,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3010 states, 3008 states have (on average 1.0704787234042554) internal successors, (3220), 3009 states have internal predecessors, (3220), 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) [2024-11-27 23:25:46,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3010 states to 3010 states and 3220 transitions. [2024-11-27 23:25:46,807 INFO L78 Accepts]: Start accepts. Automaton has 3010 states and 3220 transitions. Word has length 101 [2024-11-27 23:25:46,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:46,807 INFO L471 AbstractCegarLoop]: Abstraction has 3010 states and 3220 transitions. [2024-11-27 23:25:46,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 3.121212121212121) internal successors, (206), 66 states have internal predecessors, (206), 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) [2024-11-27 23:25:46,807 INFO L276 IsEmpty]: Start isEmpty. Operand 3010 states and 3220 transitions. [2024-11-27 23:25:46,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-27 23:25:46,809 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:46,809 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:46,820 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2024-11-27 23:25:47,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:47,009 INFO L396 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:25:47,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:47,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1919994266, now seen corresponding path program 16 times [2024-11-27 23:25:47,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:47,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875582621] [2024-11-27 23:25:47,010 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:25:47,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:47,060 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:25:47,061 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:25:48,417 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 72 proven. 178 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:25:48,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:48,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875582621] [2024-11-27 23:25:48,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875582621] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:25:48,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494196141] [2024-11-27 23:25:48,418 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:25:48,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:48,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:25:48,419 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:25:48,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-11-27 23:25:49,158 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:25:49,158 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:25:49,163 INFO L256 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 159 conjuncts are in the unsatisfiable core [2024-11-27 23:25:49,168 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:25:49,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-27 23:25:52,218 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 250 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:25:52,219 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:25:55,172 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 250 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:25:55,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494196141] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:25:55,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:25:55,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 33, 33] total 94 [2024-11-27 23:25:55,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833500882] [2024-11-27 23:25:55,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:25:55,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2024-11-27 23:25:55,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:55,174 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2024-11-27 23:25:55,174 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=674, Invalid=8256, Unknown=0, NotChecked=0, Total=8930 [2024-11-27 23:25:55,175 INFO L87 Difference]: Start difference. First operand 3010 states and 3220 transitions. Second operand has 95 states, 94 states have (on average 3.234042553191489) internal successors, (304), 95 states have internal predecessors, (304), 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) [2024-11-27 23:26:02,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:26:02,692 INFO L93 Difference]: Finished difference Result 3495 states and 3711 transitions. [2024-11-27 23:26:02,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-27 23:26:02,692 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 94 states have (on average 3.234042553191489) internal successors, (304), 95 states have internal predecessors, (304), 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) Word has length 102 [2024-11-27 23:26:02,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:26:02,694 INFO L225 Difference]: With dead ends: 3495 [2024-11-27 23:26:02,694 INFO L226 Difference]: Without dead ends: 3368 [2024-11-27 23:26:02,695 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7544 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=2040, Invalid=22452, Unknown=0, NotChecked=0, Total=24492 [2024-11-27 23:26:02,695 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 510 mSDsluCounter, 2988 mSDsCounter, 0 mSdLazyCounter, 7101 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 3058 SdHoareTripleChecker+Invalid, 7199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 7101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-27 23:26:02,695 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [510 Valid, 3058 Invalid, 7199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 7101 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-27 23:26:02,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3368 states. [2024-11-27 23:26:02,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3368 to 3013. [2024-11-27 23:26:02,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3013 states, 3011 states have (on average 1.0700763865825307) internal successors, (3222), 3012 states have internal predecessors, (3222), 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) [2024-11-27 23:26:02,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3013 states to 3013 states and 3222 transitions. [2024-11-27 23:26:02,714 INFO L78 Accepts]: Start accepts. Automaton has 3013 states and 3222 transitions. Word has length 102 [2024-11-27 23:26:02,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:26:02,714 INFO L471 AbstractCegarLoop]: Abstraction has 3013 states and 3222 transitions. [2024-11-27 23:26:02,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 94 states have (on average 3.234042553191489) internal successors, (304), 95 states have internal predecessors, (304), 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) [2024-11-27 23:26:02,714 INFO L276 IsEmpty]: Start isEmpty. Operand 3013 states and 3222 transitions. [2024-11-27 23:26:02,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-27 23:26:02,716 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:26:02,716 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:26:02,725 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2024-11-27 23:26:02,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2024-11-27 23:26:02,916 INFO L396 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:26:02,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:26:02,917 INFO L85 PathProgramCache]: Analyzing trace with hash -976861545, now seen corresponding path program 12 times [2024-11-27 23:26:02,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:26:02,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361708080] [2024-11-27 23:26:02,917 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:26:02,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:26:02,978 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-11-27 23:26:02,978 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:26:04,971 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 255 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:26:04,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:26:04,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361708080] [2024-11-27 23:26:04,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361708080] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:26:04,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004692614] [2024-11-27 23:26:04,972 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:26:04,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:26:04,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:26:04,973 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:26:04,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-11-27 23:26:08,471 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-11-27 23:26:08,471 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:26:08,480 INFO L256 TraceCheckSpWp]: Trace formula consists of 625 conjuncts, 174 conjuncts are in the unsatisfiable core [2024-11-27 23:26:08,484 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:26:09,216 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 [2024-11-27 23:26:10,209 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 77 proven. 410 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 23:26:10,209 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:26:11,060 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 13 [2024-11-27 23:26:11,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-27 23:26:11,899 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 77 proven. 410 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 23:26:11,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004692614] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:26:11,900 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:26:11,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 29, 29] total 88 [2024-11-27 23:26:11,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869099197] [2024-11-27 23:26:11,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:26:11,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2024-11-27 23:26:11,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:26:11,901 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2024-11-27 23:26:11,902 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=317, Invalid=7339, Unknown=0, NotChecked=0, Total=7656 [2024-11-27 23:26:11,902 INFO L87 Difference]: Start difference. First operand 3013 states and 3222 transitions. Second operand has 88 states, 88 states have (on average 3.3636363636363638) internal successors, (296), 88 states have internal predecessors, (296), 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) [2024-11-27 23:26:19,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:26:19,054 INFO L93 Difference]: Finished difference Result 4347 states and 4633 transitions. [2024-11-27 23:26:19,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2024-11-27 23:26:19,054 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 3.3636363636363638) internal successors, (296), 88 states have internal predecessors, (296), 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) Word has length 106 [2024-11-27 23:26:19,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:26:19,057 INFO L225 Difference]: With dead ends: 4347 [2024-11-27 23:26:19,057 INFO L226 Difference]: Without dead ends: 4156 [2024-11-27 23:26:19,057 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5447 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=1252, Invalid=25154, Unknown=0, NotChecked=0, Total=26406 [2024-11-27 23:26:19,058 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 78 mSDsluCounter, 2157 mSDsCounter, 0 mSdLazyCounter, 5437 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 2204 SdHoareTripleChecker+Invalid, 5466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 5437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:26:19,058 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 2204 Invalid, 5466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 5437 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-27 23:26:19,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4156 states. [2024-11-27 23:26:19,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4156 to 3415. [2024-11-27 23:26:19,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3415 states, 3413 states have (on average 1.0732493407559331) internal successors, (3663), 3414 states have internal predecessors, (3663), 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) [2024-11-27 23:26:19,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3415 states to 3415 states and 3663 transitions. [2024-11-27 23:26:19,082 INFO L78 Accepts]: Start accepts. Automaton has 3415 states and 3663 transitions. Word has length 106 [2024-11-27 23:26:19,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:26:19,082 INFO L471 AbstractCegarLoop]: Abstraction has 3415 states and 3663 transitions. [2024-11-27 23:26:19,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 3.3636363636363638) internal successors, (296), 88 states have internal predecessors, (296), 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) [2024-11-27 23:26:19,082 INFO L276 IsEmpty]: Start isEmpty. Operand 3415 states and 3663 transitions. [2024-11-27 23:26:19,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-27 23:26:19,085 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:26:19,085 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:26:19,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2024-11-27 23:26:19,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2024-11-27 23:26:19,286 INFO L396 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:26:19,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:26:19,286 INFO L85 PathProgramCache]: Analyzing trace with hash 294796201, now seen corresponding path program 15 times [2024-11-27 23:26:19,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:26:19,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838440953] [2024-11-27 23:26:19,286 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:26:19,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:26:19,325 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-11-27 23:26:19,325 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:26:20,733 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 231 proven. 381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:26:20,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:26:20,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838440953] [2024-11-27 23:26:20,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838440953] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:26:20,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645546247] [2024-11-27 23:26:20,733 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:26:20,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:26:20,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:26:20,735 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:26:20,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-11-27 23:26:21,349 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-11-27 23:26:21,349 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:26:21,353 INFO L256 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 94 conjuncts are in the unsatisfiable core [2024-11-27 23:26:21,355 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:26:21,894 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 13 treesize of output 9 [2024-11-27 23:26:22,693 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 27 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:26:22,693 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:26:22,776 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 13 [2024-11-27 23:26:22,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-27 23:26:22,976 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 27 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:26:22,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645546247] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:26:22,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:26:22,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 34, 34] total 71 [2024-11-27 23:26:22,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471519803] [2024-11-27 23:26:22,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:26:22,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-11-27 23:26:22,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:26:22,977 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-11-27 23:26:22,978 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=310, Invalid=4660, Unknown=0, NotChecked=0, Total=4970 [2024-11-27 23:26:22,978 INFO L87 Difference]: Start difference. First operand 3415 states and 3663 transitions. Second operand has 71 states, 71 states have (on average 3.0985915492957745) internal successors, (220), 71 states have internal predecessors, (220), 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) [2024-11-27 23:26:27,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:26:27,954 INFO L93 Difference]: Finished difference Result 4357 states and 4668 transitions. [2024-11-27 23:26:27,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-11-27 23:26:27,954 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 3.0985915492957745) internal successors, (220), 71 states have internal predecessors, (220), 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) Word has length 108 [2024-11-27 23:26:27,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:26:27,956 INFO L225 Difference]: With dead ends: 4357 [2024-11-27 23:26:27,956 INFO L226 Difference]: Without dead ends: 4312 [2024-11-27 23:26:27,957 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3900 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1175, Invalid=15855, Unknown=0, NotChecked=0, Total=17030 [2024-11-27 23:26:27,957 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 218 mSDsluCounter, 2057 mSDsCounter, 0 mSdLazyCounter, 4541 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 2111 SdHoareTripleChecker+Invalid, 4593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 4541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:26:27,957 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 2111 Invalid, 4593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 4541 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-27 23:26:27,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4312 states. [2024-11-27 23:26:27,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4312 to 3961. [2024-11-27 23:26:27,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3961 states, 3959 states have (on average 1.0740085880272796) internal successors, (4252), 3960 states have internal predecessors, (4252), 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) [2024-11-27 23:26:27,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3961 states to 3961 states and 4252 transitions. [2024-11-27 23:26:27,985 INFO L78 Accepts]: Start accepts. Automaton has 3961 states and 4252 transitions. Word has length 108 [2024-11-27 23:26:27,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:26:27,985 INFO L471 AbstractCegarLoop]: Abstraction has 3961 states and 4252 transitions. [2024-11-27 23:26:27,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 3.0985915492957745) internal successors, (220), 71 states have internal predecessors, (220), 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) [2024-11-27 23:26:27,985 INFO L276 IsEmpty]: Start isEmpty. Operand 3961 states and 4252 transitions. [2024-11-27 23:26:27,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-27 23:26:27,987 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:26:27,988 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:26:27,998 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2024-11-27 23:26:28,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:26:28,188 INFO L396 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:26:28,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:26:28,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1129662978, now seen corresponding path program 13 times [2024-11-27 23:26:28,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:26:28,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023240116] [2024-11-27 23:26:28,189 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:26:28,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:26:28,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:26:29,908 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 265 proven. 266 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:26:29,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:26:29,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023240116] [2024-11-27 23:26:29,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023240116] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:26:29,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213168991] [2024-11-27 23:26:29,908 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:26:29,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:26:29,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:26:29,910 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:26:29,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-11-27 23:26:30,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:26:30,253 INFO L256 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 130 conjuncts are in the unsatisfiable core [2024-11-27 23:26:30,255 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:26:30,841 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 13 treesize of output 9 [2024-11-27 23:26:31,663 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 36 proven. 495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:26:31,663 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:26:31,741 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 13 [2024-11-27 23:26:31,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-27 23:26:31,944 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 36 proven. 495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:26:31,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213168991] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:26:31,945 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:26:31,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31, 31] total 63 [2024-11-27 23:26:31,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592208674] [2024-11-27 23:26:31,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:26:31,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-27 23:26:31,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:26:31,946 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-27 23:26:31,946 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=3704, Unknown=0, NotChecked=0, Total=3906 [2024-11-27 23:26:31,946 INFO L87 Difference]: Start difference. First operand 3961 states and 4252 transitions. Second operand has 63 states, 63 states have (on average 3.4761904761904763) internal successors, (219), 63 states have internal predecessors, (219), 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) [2024-11-27 23:26:36,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:26:36,441 INFO L93 Difference]: Finished difference Result 5508 states and 5887 transitions. [2024-11-27 23:26:36,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-27 23:26:36,442 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 3.4761904761904763) internal successors, (219), 63 states have internal predecessors, (219), 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) Word has length 110 [2024-11-27 23:26:36,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:26:36,444 INFO L225 Difference]: With dead ends: 5508 [2024-11-27 23:26:36,445 INFO L226 Difference]: Without dead ends: 5404 [2024-11-27 23:26:36,445 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1756 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=608, Invalid=9694, Unknown=0, NotChecked=0, Total=10302 [2024-11-27 23:26:36,445 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 75 mSDsluCounter, 2050 mSDsCounter, 0 mSdLazyCounter, 4983 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 2101 SdHoareTripleChecker+Invalid, 5014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 4983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:26:36,445 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 2101 Invalid, 5014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 4983 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-27 23:26:36,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5404 states. [2024-11-27 23:26:36,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5404 to 4425. [2024-11-27 23:26:36,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4425 states, 4423 states have (on average 1.077775265656794) internal successors, (4767), 4424 states have internal predecessors, (4767), 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) [2024-11-27 23:26:36,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4425 states to 4425 states and 4767 transitions. [2024-11-27 23:26:36,477 INFO L78 Accepts]: Start accepts. Automaton has 4425 states and 4767 transitions. Word has length 110 [2024-11-27 23:26:36,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:26:36,477 INFO L471 AbstractCegarLoop]: Abstraction has 4425 states and 4767 transitions. [2024-11-27 23:26:36,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 3.4761904761904763) internal successors, (219), 63 states have internal predecessors, (219), 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) [2024-11-27 23:26:36,477 INFO L276 IsEmpty]: Start isEmpty. Operand 4425 states and 4767 transitions. [2024-11-27 23:26:36,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-27 23:26:36,479 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:26:36,479 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:26:36,488 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2024-11-27 23:26:36,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:26:36,680 INFO L396 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:26:36,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:26:36,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1584674956, now seen corresponding path program 17 times [2024-11-27 23:26:36,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:26:36,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869214185] [2024-11-27 23:26:36,680 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:26:36,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:26:36,725 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-27 23:26:36,725 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:26:38,069 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 231 proven. 271 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:26:38,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:26:38,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869214185] [2024-11-27 23:26:38,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869214185] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:26:38,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653694160] [2024-11-27 23:26:38,070 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:26:38,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:26:38,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:26:38,071 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:26:38,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2024-11-27 23:26:38,539 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-27 23:26:38,539 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:26:38,542 INFO L256 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 106 conjuncts are in the unsatisfiable core [2024-11-27 23:26:38,546 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:26:38,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-27 23:26:38,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2024-11-27 23:26:41,808 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 231 proven. 271 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:26:41,809 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:26:44,923 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 277 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:26:44,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653694160] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:26:44,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:26:44,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 97 [2024-11-27 23:26:44,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089435833] [2024-11-27 23:26:44,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:26:44,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2024-11-27 23:26:44,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:26:44,925 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2024-11-27 23:26:44,926 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=825, Invalid=8681, Unknown=0, NotChecked=0, Total=9506 [2024-11-27 23:26:44,926 INFO L87 Difference]: Start difference. First operand 4425 states and 4767 transitions. Second operand has 98 states, 97 states have (on average 3.381443298969072) internal successors, (328), 98 states have internal predecessors, (328), 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) [2024-11-27 23:26:48,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:26:48,729 INFO L93 Difference]: Finished difference Result 4880 states and 5220 transitions. [2024-11-27 23:26:48,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-27 23:26:48,730 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 97 states have (on average 3.381443298969072) internal successors, (328), 98 states have internal predecessors, (328), 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) Word has length 110 [2024-11-27 23:26:48,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:26:48,733 INFO L225 Difference]: With dead ends: 4880 [2024-11-27 23:26:48,733 INFO L226 Difference]: Without dead ends: 4676 [2024-11-27 23:26:48,733 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4106 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=1354, Invalid=13408, Unknown=0, NotChecked=0, Total=14762 [2024-11-27 23:26:48,734 INFO L435 NwaCegarLoop]: 55 mSDtfsCounter, 60 mSDsluCounter, 2009 mSDsCounter, 0 mSdLazyCounter, 4474 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 2064 SdHoareTripleChecker+Invalid, 4508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 4474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:26:48,734 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 2064 Invalid, 4508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 4474 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-27 23:26:48,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4676 states. [2024-11-27 23:26:48,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4676 to 4235. [2024-11-27 23:26:48,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4235 states, 4233 states have (on average 1.077722655327191) internal successors, (4562), 4234 states have internal predecessors, (4562), 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) [2024-11-27 23:26:48,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4235 states to 4235 states and 4562 transitions. [2024-11-27 23:26:48,764 INFO L78 Accepts]: Start accepts. Automaton has 4235 states and 4562 transitions. Word has length 110 [2024-11-27 23:26:48,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:26:48,764 INFO L471 AbstractCegarLoop]: Abstraction has 4235 states and 4562 transitions. [2024-11-27 23:26:48,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 97 states have (on average 3.381443298969072) internal successors, (328), 98 states have internal predecessors, (328), 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) [2024-11-27 23:26:48,764 INFO L276 IsEmpty]: Start isEmpty. Operand 4235 states and 4562 transitions. [2024-11-27 23:26:48,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-27 23:26:48,767 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:26:48,767 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:26:48,775 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2024-11-27 23:26:48,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:26:48,968 INFO L396 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:26:48,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:26:48,968 INFO L85 PathProgramCache]: Analyzing trace with hash 538054557, now seen corresponding path program 18 times [2024-11-27 23:26:48,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:26:48,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863037729] [2024-11-27 23:26:48,968 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:26:48,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:26:49,027 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-11-27 23:26:49,027 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:26:50,651 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 92 proven. 262 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:26:50,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:26:50,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863037729] [2024-11-27 23:26:50,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863037729] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:26:50,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992490024] [2024-11-27 23:26:50,651 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:26:50,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:26:50,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:26:50,655 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:26:50,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-11-27 23:26:53,397 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-11-27 23:26:53,397 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:26:53,407 INFO L256 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 200 conjuncts are in the unsatisfiable core [2024-11-27 23:26:53,411 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:26:53,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 8 [2024-11-27 23:26:53,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2024-11-27 23:26:57,638 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:26:57,638 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:27:00,759 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:00,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992490024] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:27:00,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:27:00,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35, 35] total 104 [2024-11-27 23:27:00,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389088458] [2024-11-27 23:27:00,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:27:00,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2024-11-27 23:27:00,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:00,761 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2024-11-27 23:27:00,761 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1054, Invalid=9866, Unknown=0, NotChecked=0, Total=10920 [2024-11-27 23:27:00,761 INFO L87 Difference]: Start difference. First operand 4235 states and 4562 transitions. Second operand has 105 states, 104 states have (on average 3.1826923076923075) internal successors, (331), 105 states have internal predecessors, (331), 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) [2024-11-27 23:27:10,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:10,252 INFO L93 Difference]: Finished difference Result 5205 states and 5535 transitions. [2024-11-27 23:27:10,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2024-11-27 23:27:10,253 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 104 states have (on average 3.1826923076923075) internal successors, (331), 105 states have internal predecessors, (331), 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) Word has length 111 [2024-11-27 23:27:10,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:10,255 INFO L225 Difference]: With dead ends: 5205 [2024-11-27 23:27:10,255 INFO L226 Difference]: Without dead ends: 4888 [2024-11-27 23:27:10,256 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10086 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=2973, Invalid=28889, Unknown=0, NotChecked=0, Total=31862 [2024-11-27 23:27:10,256 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 429 mSDsluCounter, 2975 mSDsCounter, 0 mSdLazyCounter, 7046 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 3052 SdHoareTripleChecker+Invalid, 7170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 7046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:10,256 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 3052 Invalid, 7170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 7046 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-27 23:27:10,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4888 states. [2024-11-27 23:27:10,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4888 to 4197. [2024-11-27 23:27:10,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4197 states, 4195 states have (on average 1.0731823599523242) internal successors, (4502), 4196 states have internal predecessors, (4502), 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) [2024-11-27 23:27:10,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4197 states to 4197 states and 4502 transitions. [2024-11-27 23:27:10,292 INFO L78 Accepts]: Start accepts. Automaton has 4197 states and 4502 transitions. Word has length 111 [2024-11-27 23:27:10,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:10,292 INFO L471 AbstractCegarLoop]: Abstraction has 4197 states and 4502 transitions. [2024-11-27 23:27:10,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 104 states have (on average 3.1826923076923075) internal successors, (331), 105 states have internal predecessors, (331), 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) [2024-11-27 23:27:10,293 INFO L276 IsEmpty]: Start isEmpty. Operand 4197 states and 4502 transitions. [2024-11-27 23:27:10,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-27 23:27:10,295 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:10,295 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:10,306 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2024-11-27 23:27:10,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:10,496 INFO L396 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:27:10,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:10,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1728629684, now seen corresponding path program 19 times [2024-11-27 23:27:10,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:10,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051843471] [2024-11-27 23:27:10,496 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:27:10,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:10,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:11,934 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 97 proven. 246 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:11,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:11,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051843471] [2024-11-27 23:27:11,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051843471] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:27:11,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006750779] [2024-11-27 23:27:11,935 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:27:11,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:11,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:27:11,937 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:27:11,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2024-11-27 23:27:12,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:12,300 INFO L256 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 131 conjuncts are in the unsatisfiable core [2024-11-27 23:27:12,304 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:27:12,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-27 23:27:15,642 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 135 proven. 208 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:15,642 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:27:18,740 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 181 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:18,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006750779] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:27:18,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:27:18,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 34] total 98 [2024-11-27 23:27:18,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945591419] [2024-11-27 23:27:18,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:27:18,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2024-11-27 23:27:18,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:18,742 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2024-11-27 23:27:18,742 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=887, Invalid=8815, Unknown=0, NotChecked=0, Total=9702 [2024-11-27 23:27:18,742 INFO L87 Difference]: Start difference. First operand 4197 states and 4502 transitions. Second operand has 99 states, 98 states have (on average 3.438775510204082) internal successors, (337), 99 states have internal predecessors, (337), 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) [2024-11-27 23:27:25,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:25,377 INFO L93 Difference]: Finished difference Result 5273 states and 5576 transitions. [2024-11-27 23:27:25,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2024-11-27 23:27:25,378 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 98 states have (on average 3.438775510204082) internal successors, (337), 99 states have internal predecessors, (337), 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) Word has length 113 [2024-11-27 23:27:25,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:25,380 INFO L225 Difference]: With dead ends: 5273 [2024-11-27 23:27:25,380 INFO L226 Difference]: Without dead ends: 5024 [2024-11-27 23:27:25,381 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6866 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=1960, Invalid=22220, Unknown=0, NotChecked=0, Total=24180 [2024-11-27 23:27:25,381 INFO L435 NwaCegarLoop]: 98 mSDtfsCounter, 207 mSDsluCounter, 2773 mSDsCounter, 0 mSdLazyCounter, 5957 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 2871 SdHoareTripleChecker+Invalid, 6023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 5957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:25,381 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 2871 Invalid, 6023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 5957 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-27 23:27:25,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5024 states. [2024-11-27 23:27:25,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5024 to 3877. [2024-11-27 23:27:25,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3877 states, 3875 states have (on average 1.0683870967741935) internal successors, (4140), 3876 states have internal predecessors, (4140), 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) [2024-11-27 23:27:25,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3877 states to 3877 states and 4140 transitions. [2024-11-27 23:27:25,419 INFO L78 Accepts]: Start accepts. Automaton has 3877 states and 4140 transitions. Word has length 113 [2024-11-27 23:27:25,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:25,419 INFO L471 AbstractCegarLoop]: Abstraction has 3877 states and 4140 transitions. [2024-11-27 23:27:25,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 98 states have (on average 3.438775510204082) internal successors, (337), 99 states have internal predecessors, (337), 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) [2024-11-27 23:27:25,419 INFO L276 IsEmpty]: Start isEmpty. Operand 3877 states and 4140 transitions. [2024-11-27 23:27:25,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-27 23:27:25,422 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:25,422 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:25,433 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2024-11-27 23:27:25,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:25,623 INFO L396 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:27:25,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:25,623 INFO L85 PathProgramCache]: Analyzing trace with hash 116401041, now seen corresponding path program 20 times [2024-11-27 23:27:25,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:25,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269034667] [2024-11-27 23:27:25,624 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:27:25,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:25,668 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:27:25,668 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:27:26,983 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 153 proven. 333 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 23:27:26,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:26,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269034667] [2024-11-27 23:27:26,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269034667] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:27:26,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605554451] [2024-11-27 23:27:26,983 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:27:26,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:26,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:27:26,985 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:27:26,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2024-11-27 23:27:27,344 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:27:27,344 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:27:27,349 INFO L256 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 197 conjuncts are in the unsatisfiable core [2024-11-27 23:27:27,353 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:27:27,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2024-11-27 23:27:30,930 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 0 proven. 487 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:30,930 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:27:34,650 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 0 proven. 487 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:34,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605554451] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:27:34,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:27:34,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 34, 35] total 98 [2024-11-27 23:27:34,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527434571] [2024-11-27 23:27:34,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:27:34,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2024-11-27 23:27:34,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:34,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2024-11-27 23:27:34,653 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=809, Invalid=8893, Unknown=0, NotChecked=0, Total=9702 [2024-11-27 23:27:34,653 INFO L87 Difference]: Start difference. First operand 3877 states and 4140 transitions. Second operand has 99 states, 98 states have (on average 3.438775510204082) internal successors, (337), 99 states have internal predecessors, (337), 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) [2024-11-27 23:27:42,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:42,557 INFO L93 Difference]: Finished difference Result 4740 states and 5017 transitions. [2024-11-27 23:27:42,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2024-11-27 23:27:42,557 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 98 states have (on average 3.438775510204082) internal successors, (337), 99 states have internal predecessors, (337), 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) Word has length 113 [2024-11-27 23:27:42,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:42,559 INFO L225 Difference]: With dead ends: 4740 [2024-11-27 23:27:42,560 INFO L226 Difference]: Without dead ends: 4625 [2024-11-27 23:27:42,560 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 157 SyntacticMatches, 1 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5848 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=1768, Invalid=22412, Unknown=0, NotChecked=0, Total=24180 [2024-11-27 23:27:42,561 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 280 mSDsluCounter, 2679 mSDsCounter, 0 mSdLazyCounter, 6513 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 2746 SdHoareTripleChecker+Invalid, 6582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 6513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:42,561 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 2746 Invalid, 6582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 6513 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-27 23:27:42,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4625 states. [2024-11-27 23:27:42,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4625 to 3880. [2024-11-27 23:27:42,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3880 states, 3878 states have (on average 1.068592057761733) internal successors, (4144), 3879 states have internal predecessors, (4144), 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) [2024-11-27 23:27:42,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3880 states to 3880 states and 4144 transitions. [2024-11-27 23:27:42,600 INFO L78 Accepts]: Start accepts. Automaton has 3880 states and 4144 transitions. Word has length 113 [2024-11-27 23:27:42,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:42,601 INFO L471 AbstractCegarLoop]: Abstraction has 3880 states and 4144 transitions. [2024-11-27 23:27:42,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 98 states have (on average 3.438775510204082) internal successors, (337), 99 states have internal predecessors, (337), 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) [2024-11-27 23:27:42,602 INFO L276 IsEmpty]: Start isEmpty. Operand 3880 states and 4144 transitions. [2024-11-27 23:27:42,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-27 23:27:42,605 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:42,605 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:42,621 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2024-11-27 23:27:42,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2024-11-27 23:27:42,806 INFO L396 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:27:42,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:42,806 INFO L85 PathProgramCache]: Analyzing trace with hash -909517352, now seen corresponding path program 16 times [2024-11-27 23:27:42,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:42,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251461534] [2024-11-27 23:27:42,806 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:27:42,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:42,837 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:27:42,838 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:27:44,131 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 276 proven. 432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:44,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:44,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251461534] [2024-11-27 23:27:44,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251461534] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:27:44,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145721908] [2024-11-27 23:27:44,131 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:27:44,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:44,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:27:44,133 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:27:44,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2024-11-27 23:27:44,464 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:27:44,464 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:27:44,467 INFO L256 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 100 conjuncts are in the unsatisfiable core [2024-11-27 23:27:44,469 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:27:45,163 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 13 treesize of output 9 [2024-11-27 23:27:46,043 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 29 proven. 679 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:46,043 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:27:46,111 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 13 [2024-11-27 23:27:46,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-27 23:27:46,309 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 29 proven. 679 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:46,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145721908] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:27:46,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:27:46,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 72 [2024-11-27 23:27:46,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699800774] [2024-11-27 23:27:46,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:27:46,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-11-27 23:27:46,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:46,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-11-27 23:27:46,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=339, Invalid=4773, Unknown=0, NotChecked=0, Total=5112 [2024-11-27 23:27:46,311 INFO L87 Difference]: Start difference. First operand 3880 states and 4144 transitions. Second operand has 72 states, 72 states have (on average 3.111111111111111) internal successors, (224), 72 states have internal predecessors, (224), 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) [2024-11-27 23:27:50,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:50,456 INFO L93 Difference]: Finished difference Result 4876 states and 5206 transitions. [2024-11-27 23:27:50,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-11-27 23:27:50,456 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 3.111111111111111) internal successors, (224), 72 states have internal predecessors, (224), 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) Word has length 115 [2024-11-27 23:27:50,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:50,459 INFO L225 Difference]: With dead ends: 4876 [2024-11-27 23:27:50,459 INFO L226 Difference]: Without dead ends: 4828 [2024-11-27 23:27:50,459 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2435 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=604, Invalid=10526, Unknown=0, NotChecked=0, Total=11130 [2024-11-27 23:27:50,459 INFO L435 NwaCegarLoop]: 64 mSDtfsCounter, 67 mSDsluCounter, 2492 mSDsCounter, 0 mSdLazyCounter, 5443 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 2556 SdHoareTripleChecker+Invalid, 5466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 5443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:50,460 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 2556 Invalid, 5466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 5443 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-27 23:27:50,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4828 states. [2024-11-27 23:27:50,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4828 to 4547. [2024-11-27 23:27:50,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4547 states, 4545 states have (on average 1.0704070407040704) internal successors, (4865), 4546 states have internal predecessors, (4865), 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) [2024-11-27 23:27:50,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4547 states to 4547 states and 4865 transitions. [2024-11-27 23:27:50,488 INFO L78 Accepts]: Start accepts. Automaton has 4547 states and 4865 transitions. Word has length 115 [2024-11-27 23:27:50,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:50,488 INFO L471 AbstractCegarLoop]: Abstraction has 4547 states and 4865 transitions. [2024-11-27 23:27:50,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 3.111111111111111) internal successors, (224), 72 states have internal predecessors, (224), 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) [2024-11-27 23:27:50,488 INFO L276 IsEmpty]: Start isEmpty. Operand 4547 states and 4865 transitions. [2024-11-27 23:27:50,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-27 23:27:50,490 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:50,490 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:50,499 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2024-11-27 23:27:50,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:50,691 INFO L396 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:27:50,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:50,691 INFO L85 PathProgramCache]: Analyzing trace with hash 368031592, now seen corresponding path program 21 times [2024-11-27 23:27:50,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:50,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127606669] [2024-11-27 23:27:50,691 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:27:50,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:50,732 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-27 23:27:50,732 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:27:52,383 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 73 proven. 239 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:52,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:52,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127606669] [2024-11-27 23:27:52,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127606669] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:27:52,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028635835] [2024-11-27 23:27:52,384 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:27:52,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:52,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:27:52,386 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:27:52,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2024-11-27 23:27:54,255 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-27 23:27:54,255 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:27:54,261 INFO L256 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 104 conjuncts are in the unsatisfiable core [2024-11-27 23:27:54,265 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:27:54,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2024-11-27 23:27:56,477 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 45 proven. 267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:56,477 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:27:59,020 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 157 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:59,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028635835] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:27:59,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:27:59,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 33, 33] total 102 [2024-11-27 23:27:59,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627479345] [2024-11-27 23:27:59,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:27:59,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2024-11-27 23:27:59,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:59,022 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2024-11-27 23:27:59,022 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1041, Invalid=9465, Unknown=0, NotChecked=0, Total=10506 [2024-11-27 23:27:59,023 INFO L87 Difference]: Start difference. First operand 4547 states and 4865 transitions. Second operand has 103 states, 102 states have (on average 3.3627450980392157) internal successors, (343), 103 states have internal predecessors, (343), 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) [2024-11-27 23:28:05,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:28:05,252 INFO L93 Difference]: Finished difference Result 5649 states and 5991 transitions. [2024-11-27 23:28:05,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2024-11-27 23:28:05,253 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 102 states have (on average 3.3627450980392157) internal successors, (343), 103 states have internal predecessors, (343), 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) Word has length 115 [2024-11-27 23:28:05,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:28:05,256 INFO L225 Difference]: With dead ends: 5649 [2024-11-27 23:28:05,256 INFO L226 Difference]: Without dead ends: 5397 [2024-11-27 23:28:05,257 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10790 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=3631, Invalid=29675, Unknown=0, NotChecked=0, Total=33306 [2024-11-27 23:28:05,257 INFO L435 NwaCegarLoop]: 61 mSDtfsCounter, 361 mSDsluCounter, 1550 mSDsCounter, 0 mSdLazyCounter, 4036 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 1611 SdHoareTripleChecker+Invalid, 4157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 4036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:28:05,257 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 1611 Invalid, 4157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 4036 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-27 23:28:05,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5397 states. [2024-11-27 23:28:05,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5397 to 4573. [2024-11-27 23:28:05,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4573 states, 4571 states have (on average 1.0695690220958214) internal successors, (4889), 4572 states have internal predecessors, (4889), 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) [2024-11-27 23:28:05,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4573 states to 4573 states and 4889 transitions. [2024-11-27 23:28:05,285 INFO L78 Accepts]: Start accepts. Automaton has 4573 states and 4889 transitions. Word has length 115 [2024-11-27 23:28:05,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:28:05,285 INFO L471 AbstractCegarLoop]: Abstraction has 4573 states and 4889 transitions. [2024-11-27 23:28:05,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 102 states have (on average 3.3627450980392157) internal successors, (343), 103 states have internal predecessors, (343), 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) [2024-11-27 23:28:05,285 INFO L276 IsEmpty]: Start isEmpty. Operand 4573 states and 4889 transitions. [2024-11-27 23:28:05,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-27 23:28:05,287 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:28:05,288 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:28:05,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2024-11-27 23:28:05,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2024-11-27 23:28:05,488 INFO L396 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:28:05,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:28:05,488 INFO L85 PathProgramCache]: Analyzing trace with hash 602341148, now seen corresponding path program 22 times [2024-11-27 23:28:05,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:28:05,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800496606] [2024-11-27 23:28:05,488 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:28:05,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:28:05,670 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:28:05,671 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:28:07,262 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 106 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:28:07,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:28:07,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800496606] [2024-11-27 23:28:07,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800496606] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:28:07,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961583261] [2024-11-27 23:28:07,262 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:28:07,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:28:07,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:28:07,264 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:28:07,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2024-11-27 23:28:08,804 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:28:08,804 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:28:08,810 INFO L256 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 179 conjuncts are in the unsatisfiable core [2024-11-27 23:28:08,814 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:28:08,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2024-11-27 23:28:12,715 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 341 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:28:12,716 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:28:16,688 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 341 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:28:16,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961583261] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:28:16,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:28:16,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 37, 37] total 107 [2024-11-27 23:28:16,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607304093] [2024-11-27 23:28:16,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:28:16,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2024-11-27 23:28:16,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:28:16,690 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2024-11-27 23:28:16,691 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=771, Invalid=10785, Unknown=0, NotChecked=0, Total=11556 [2024-11-27 23:28:16,691 INFO L87 Difference]: Start difference. First operand 4573 states and 4889 transitions. Second operand has 108 states, 107 states have (on average 3.2616822429906542) internal successors, (349), 108 states have internal predecessors, (349), 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) [2024-11-27 23:28:26,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:28:26,654 INFO L93 Difference]: Finished difference Result 5290 states and 5616 transitions. [2024-11-27 23:28:26,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2024-11-27 23:28:26,655 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 107 states have (on average 3.2616822429906542) internal successors, (349), 108 states have internal predecessors, (349), 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) Word has length 117 [2024-11-27 23:28:26,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:28:26,682 INFO L225 Difference]: With dead ends: 5290 [2024-11-27 23:28:26,682 INFO L226 Difference]: Without dead ends: 5142 [2024-11-27 23:28:26,683 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9810 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=2530, Invalid=29690, Unknown=0, NotChecked=0, Total=32220 [2024-11-27 23:28:26,683 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 438 mSDsluCounter, 3930 mSDsCounter, 0 mSdLazyCounter, 9334 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 4009 SdHoareTripleChecker+Invalid, 9447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 9334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:28:26,683 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 4009 Invalid, 9447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 9334 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-11-27 23:28:26,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5142 states. [2024-11-27 23:28:26,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5142 to 4582. [2024-11-27 23:28:26,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4582 states, 4580 states have (on average 1.0692139737991266) internal successors, (4897), 4581 states have internal predecessors, (4897), 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) [2024-11-27 23:28:26,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4582 states to 4582 states and 4897 transitions. [2024-11-27 23:28:26,714 INFO L78 Accepts]: Start accepts. Automaton has 4582 states and 4897 transitions. Word has length 117 [2024-11-27 23:28:26,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:28:26,715 INFO L471 AbstractCegarLoop]: Abstraction has 4582 states and 4897 transitions. [2024-11-27 23:28:26,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 107 states have (on average 3.2616822429906542) internal successors, (349), 108 states have internal predecessors, (349), 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) [2024-11-27 23:28:26,715 INFO L276 IsEmpty]: Start isEmpty. Operand 4582 states and 4897 transitions. [2024-11-27 23:28:26,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-27 23:28:26,718 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:28:26,718 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:28:26,732 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2024-11-27 23:28:26,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2024-11-27 23:28:26,919 INFO L396 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:28:26,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:28:26,919 INFO L85 PathProgramCache]: Analyzing trace with hash -2099092065, now seen corresponding path program 14 times [2024-11-27 23:28:26,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:28:26,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411104611] [2024-11-27 23:28:26,920 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:28:26,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:28:26,949 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:28:26,949 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:28:28,477 INFO L134 CoverageAnalysis]: Checked inductivity of 627 backedges. 190 proven. 437 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:28:28,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:28:28,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411104611] [2024-11-27 23:28:28,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411104611] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:28:28,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330025164] [2024-11-27 23:28:28,477 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:28:28,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:28:28,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:28:28,479 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:28:28,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2024-11-27 23:28:28,865 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:28:28,865 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:28:28,869 INFO L256 TraceCheckSpWp]: Trace formula consists of 682 conjuncts, 144 conjuncts are in the unsatisfiable core [2024-11-27 23:28:28,871 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:28:29,460 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 13 treesize of output 9 [2024-11-27 23:28:30,336 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 7 treesize of output 3 [2024-11-27 23:28:30,390 INFO L134 CoverageAnalysis]: Checked inductivity of 627 backedges. 39 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:28:30,391 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:28:30,530 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 13 [2024-11-27 23:28:30,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-27 23:28:30,724 INFO L134 CoverageAnalysis]: Checked inductivity of 627 backedges. 39 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:28:30,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330025164] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:28:30,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:28:30,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33, 33] total 69 [2024-11-27 23:28:30,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749457999] [2024-11-27 23:28:30,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:28:30,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-11-27 23:28:30,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:28:30,726 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-11-27 23:28:30,726 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=4489, Unknown=0, NotChecked=0, Total=4692 [2024-11-27 23:28:30,726 INFO L87 Difference]: Start difference. First operand 4582 states and 4897 transitions. Second operand has 69 states, 69 states have (on average 3.5072463768115942) internal successors, (242), 69 states have internal predecessors, (242), 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) [2024-11-27 23:28:47,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:28:47,408 INFO L93 Difference]: Finished difference Result 5990 states and 6377 transitions. [2024-11-27 23:28:47,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2024-11-27 23:28:47,408 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 3.5072463768115942) internal successors, (242), 69 states have internal predecessors, (242), 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) Word has length 118 [2024-11-27 23:28:47,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:28:47,410 INFO L225 Difference]: With dead ends: 5990 [2024-11-27 23:28:47,410 INFO L226 Difference]: Without dead ends: 5662 [2024-11-27 23:28:47,411 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15170 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=1048, Invalid=50708, Unknown=0, NotChecked=0, Total=51756 [2024-11-27 23:28:47,412 INFO L435 NwaCegarLoop]: 156 mSDtfsCounter, 179 mSDsluCounter, 7405 mSDsCounter, 0 mSdLazyCounter, 21943 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 7561 SdHoareTripleChecker+Invalid, 21982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 21943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2024-11-27 23:28:47,412 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 7561 Invalid, 21982 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [39 Valid, 21943 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time] [2024-11-27 23:28:47,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5662 states. [2024-11-27 23:28:47,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5662 to 5098. [2024-11-27 23:28:47,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5098 states, 5096 states have (on average 1.071624803767661) internal successors, (5461), 5097 states have internal predecessors, (5461), 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) [2024-11-27 23:28:47,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5098 states to 5098 states and 5461 transitions. [2024-11-27 23:28:47,448 INFO L78 Accepts]: Start accepts. Automaton has 5098 states and 5461 transitions. Word has length 118 [2024-11-27 23:28:47,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:28:47,448 INFO L471 AbstractCegarLoop]: Abstraction has 5098 states and 5461 transitions. [2024-11-27 23:28:47,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 3.5072463768115942) internal successors, (242), 69 states have internal predecessors, (242), 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) [2024-11-27 23:28:47,449 INFO L276 IsEmpty]: Start isEmpty. Operand 5098 states and 5461 transitions. [2024-11-27 23:28:47,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-27 23:28:47,452 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:28:47,452 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:28:47,464 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2024-11-27 23:28:47,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2024-11-27 23:28:47,653 INFO L396 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:28:47,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:28:47,653 INFO L85 PathProgramCache]: Analyzing trace with hash -158603853, now seen corresponding path program 23 times [2024-11-27 23:28:47,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:28:47,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713495983] [2024-11-27 23:28:47,653 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:28:47,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:28:47,703 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-11-27 23:28:47,704 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:28:49,293 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 196 proven. 258 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:28:49,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:28:49,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713495983] [2024-11-27 23:28:49,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713495983] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:28:49,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130637233] [2024-11-27 23:28:49,293 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:28:49,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:28:49,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:28:49,295 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:28:49,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2024-11-27 23:28:50,315 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-11-27 23:28:50,315 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:28:50,321 INFO L256 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 127 conjuncts are in the unsatisfiable core [2024-11-27 23:28:50,325 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:28:50,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-27 23:28:54,019 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 196 proven. 258 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:28:54,019 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:28:57,605 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 246 proven. 208 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:28:57,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130637233] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:28:57,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:28:57,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35, 35] total 104 [2024-11-27 23:28:57,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666688158] [2024-11-27 23:28:57,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:28:57,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2024-11-27 23:28:57,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:28:57,607 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2024-11-27 23:28:57,607 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1053, Invalid=9867, Unknown=0, NotChecked=0, Total=10920 [2024-11-27 23:28:57,607 INFO L87 Difference]: Start difference. First operand 5098 states and 5461 transitions. Second operand has 105 states, 104 states have (on average 3.4134615384615383) internal successors, (355), 105 states have internal predecessors, (355), 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) [2024-11-27 23:29:02,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:29:02,861 INFO L93 Difference]: Finished difference Result 5453 states and 5814 transitions. [2024-11-27 23:29:02,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2024-11-27 23:29:02,862 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 104 states have (on average 3.4134615384615383) internal successors, (355), 105 states have internal predecessors, (355), 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) Word has length 119 [2024-11-27 23:29:02,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:29:02,865 INFO L225 Difference]: With dead ends: 5453 [2024-11-27 23:29:02,865 INFO L226 Difference]: Without dead ends: 5299 [2024-11-27 23:29:02,866 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5935 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=1825, Invalid=18197, Unknown=0, NotChecked=0, Total=20022 [2024-11-27 23:29:02,866 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 49 mSDsluCounter, 2259 mSDsCounter, 0 mSdLazyCounter, 5341 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 2329 SdHoareTripleChecker+Invalid, 5352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 5341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:29:02,866 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 2329 Invalid, 5352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 5341 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-27 23:29:02,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5299 states. [2024-11-27 23:29:02,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5299 to 5017. [2024-11-27 23:29:02,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5017 states, 5015 states have (on average 1.0707876370887337) internal successors, (5370), 5016 states have internal predecessors, (5370), 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) [2024-11-27 23:29:02,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5017 states to 5017 states and 5370 transitions. [2024-11-27 23:29:02,911 INFO L78 Accepts]: Start accepts. Automaton has 5017 states and 5370 transitions. Word has length 119 [2024-11-27 23:29:02,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:29:02,911 INFO L471 AbstractCegarLoop]: Abstraction has 5017 states and 5370 transitions. [2024-11-27 23:29:02,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 104 states have (on average 3.4134615384615383) internal successors, (355), 105 states have internal predecessors, (355), 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) [2024-11-27 23:29:02,911 INFO L276 IsEmpty]: Start isEmpty. Operand 5017 states and 5370 transitions. [2024-11-27 23:29:02,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-27 23:29:02,915 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:29:02,915 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:29:02,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2024-11-27 23:29:03,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:03,115 INFO L396 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:29:03,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:29:03,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1309237321, now seen corresponding path program 17 times [2024-11-27 23:29:03,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:29:03,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159933314] [2024-11-27 23:29:03,116 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:29:03,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:29:03,166 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2024-11-27 23:29:03,166 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:29:04,995 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 338 proven. 473 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:29:04,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:29:04,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159933314] [2024-11-27 23:29:04,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159933314] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:29:04,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411597436] [2024-11-27 23:29:04,996 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:29:04,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:04,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:29:04,998 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:29:05,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2024-11-27 23:29:05,584 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2024-11-27 23:29:05,584 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:29:05,588 INFO L256 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 108 conjuncts are in the unsatisfiable core [2024-11-27 23:29:05,591 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:29:06,495 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 13 treesize of output 9 [2024-11-27 23:29:07,808 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 31 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:29:07,808 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:29:07,881 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 13 [2024-11-27 23:29:07,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-27 23:29:08,119 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 31 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:29:08,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411597436] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:29:08,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:29:08,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 38, 38] total 80 [2024-11-27 23:29:08,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794948380] [2024-11-27 23:29:08,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:29:08,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2024-11-27 23:29:08,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:29:08,120 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2024-11-27 23:29:08,121 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=6046, Unknown=0, NotChecked=0, Total=6320 [2024-11-27 23:29:08,121 INFO L87 Difference]: Start difference. First operand 5017 states and 5370 transitions. Second operand has 80 states, 80 states have (on average 3.1) internal successors, (248), 80 states have internal predecessors, (248), 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) [2024-11-27 23:29:17,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:29:17,300 INFO L93 Difference]: Finished difference Result 6149 states and 6560 transitions. [2024-11-27 23:29:17,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2024-11-27 23:29:17,300 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 3.1) internal successors, (248), 80 states have internal predecessors, (248), 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) Word has length 122 [2024-11-27 23:29:17,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:29:17,303 INFO L225 Difference]: With dead ends: 6149 [2024-11-27 23:29:17,304 INFO L226 Difference]: Without dead ends: 6047 [2024-11-27 23:29:17,304 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5876 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=1210, Invalid=26180, Unknown=0, NotChecked=0, Total=27390 [2024-11-27 23:29:17,305 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 166 mSDsluCounter, 3605 mSDsCounter, 0 mSdLazyCounter, 7981 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 3671 SdHoareTripleChecker+Invalid, 8030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 7981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-27 23:29:17,305 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 3671 Invalid, 8030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 7981 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-27 23:29:17,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6047 states. [2024-11-27 23:29:17,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6047 to 5803. [2024-11-27 23:29:17,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5803 states, 5801 states have (on average 1.0711946216169626) internal successors, (6214), 5802 states have internal predecessors, (6214), 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) [2024-11-27 23:29:17,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5803 states to 5803 states and 6214 transitions. [2024-11-27 23:29:17,338 INFO L78 Accepts]: Start accepts. Automaton has 5803 states and 6214 transitions. Word has length 122 [2024-11-27 23:29:17,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:29:17,338 INFO L471 AbstractCegarLoop]: Abstraction has 5803 states and 6214 transitions. [2024-11-27 23:29:17,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 3.1) internal successors, (248), 80 states have internal predecessors, (248), 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) [2024-11-27 23:29:17,338 INFO L276 IsEmpty]: Start isEmpty. Operand 5803 states and 6214 transitions. [2024-11-27 23:29:17,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-27 23:29:17,340 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:29:17,340 INFO L218 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:29:17,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2024-11-27 23:29:17,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:17,541 INFO L396 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:29:17,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:29:17,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1825135770, now seen corresponding path program 24 times [2024-11-27 23:29:17,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:29:17,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706448203] [2024-11-27 23:29:17,541 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:29:17,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:29:17,631 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2024-11-27 23:29:17,631 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:29:19,323 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 276 proven. 407 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:29:19,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:29:19,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706448203] [2024-11-27 23:29:19,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706448203] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:29:19,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393730106] [2024-11-27 23:29:19,323 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:29:19,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:19,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:29:19,325 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:29:19,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2024-11-27 23:29:21,256 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2024-11-27 23:29:21,256 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:29:21,263 INFO L256 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-11-27 23:29:21,267 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:29:21,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2024-11-27 23:29:23,743 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 325 proven. 358 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:29:23,744 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:29:26,456 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 379 proven. 304 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:29:26,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393730106] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:29:26,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:29:26,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 37, 37] total 111 [2024-11-27 23:29:26,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957535858] [2024-11-27 23:29:26,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:29:26,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2024-11-27 23:29:26,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:29:26,459 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2024-11-27 23:29:26,459 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1436, Invalid=10996, Unknown=0, NotChecked=0, Total=12432 [2024-11-27 23:29:26,460 INFO L87 Difference]: Start difference. First operand 5803 states and 6214 transitions. Second operand has 112 states, 111 states have (on average 3.3333333333333335) internal successors, (370), 112 states have internal predecessors, (370), 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) [2024-11-27 23:29:30,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:29:30,733 INFO L93 Difference]: Finished difference Result 6455 states and 6877 transitions. [2024-11-27 23:29:30,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-11-27 23:29:30,734 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 111 states have (on average 3.3333333333333335) internal successors, (370), 112 states have internal predecessors, (370), 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) Word has length 124 [2024-11-27 23:29:30,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:29:30,737 INFO L225 Difference]: With dead ends: 6455 [2024-11-27 23:29:30,737 INFO L226 Difference]: Without dead ends: 6215 [2024-11-27 23:29:30,739 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10013 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=3282, Invalid=26130, Unknown=0, NotChecked=0, Total=29412 [2024-11-27 23:29:30,739 INFO L435 NwaCegarLoop]: 50 mSDtfsCounter, 159 mSDsluCounter, 1080 mSDsCounter, 0 mSdLazyCounter, 2597 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 1130 SdHoareTripleChecker+Invalid, 2681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:29:30,739 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 1130 Invalid, 2681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2597 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-27 23:29:30,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6215 states. [2024-11-27 23:29:30,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6215 to 5461. [2024-11-27 23:29:30,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5461 states, 5459 states have (on average 1.070708921047811) internal successors, (5845), 5460 states have internal predecessors, (5845), 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) [2024-11-27 23:29:30,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5461 states to 5461 states and 5845 transitions. [2024-11-27 23:29:30,777 INFO L78 Accepts]: Start accepts. Automaton has 5461 states and 5845 transitions. Word has length 124 [2024-11-27 23:29:30,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:29:30,778 INFO L471 AbstractCegarLoop]: Abstraction has 5461 states and 5845 transitions. [2024-11-27 23:29:30,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 111 states have (on average 3.3333333333333335) internal successors, (370), 112 states have internal predecessors, (370), 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) [2024-11-27 23:29:30,778 INFO L276 IsEmpty]: Start isEmpty. Operand 5461 states and 5845 transitions. [2024-11-27 23:29:30,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-27 23:29:30,780 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:29:30,780 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:29:30,791 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2024-11-27 23:29:30,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:30,981 INFO L396 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:29:30,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:29:30,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1535638080, now seen corresponding path program 15 times [2024-11-27 23:29:30,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:29:30,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360336906] [2024-11-27 23:29:30,981 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:29:30,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:29:31,052 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-11-27 23:29:31,053 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:29:33,252 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 231 proven. 500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:29:33,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:29:33,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360336906] [2024-11-27 23:29:33,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360336906] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:29:33,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543078607] [2024-11-27 23:29:33,253 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:29:33,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:33,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:29:33,254 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:29:33,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2024-11-27 23:29:36,721 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-11-27 23:29:36,721 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:29:36,730 INFO L256 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 150 conjuncts are in the unsatisfiable core [2024-11-27 23:29:36,734 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:29:37,408 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 13 treesize of output 9 [2024-11-27 23:29:38,441 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 42 proven. 689 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:29:38,441 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:29:38,537 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 13 [2024-11-27 23:29:38,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-27 23:29:38,749 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 42 proven. 689 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:29:38,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543078607] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:29:38,749 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:29:38,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 35, 35] total 82 [2024-11-27 23:29:38,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207663017] [2024-11-27 23:29:38,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:29:38,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2024-11-27 23:29:38,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:29:38,750 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2024-11-27 23:29:38,751 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=6218, Unknown=0, NotChecked=0, Total=6642 [2024-11-27 23:29:38,751 INFO L87 Difference]: Start difference. First operand 5461 states and 5845 transitions. Second operand has 82 states, 82 states have (on average 3.1219512195121952) internal successors, (256), 82 states have internal predecessors, (256), 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) [2024-11-27 23:29:47,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:29:47,263 INFO L93 Difference]: Finished difference Result 6652 states and 7106 transitions. [2024-11-27 23:29:47,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2024-11-27 23:29:47,263 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 3.1219512195121952) internal successors, (256), 82 states have internal predecessors, (256), 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) Word has length 126 [2024-11-27 23:29:47,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:29:47,266 INFO L225 Difference]: With dead ends: 6652 [2024-11-27 23:29:47,266 INFO L226 Difference]: Without dead ends: 6470 [2024-11-27 23:29:47,267 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8193 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=2160, Invalid=31146, Unknown=0, NotChecked=0, Total=33306 [2024-11-27 23:29:47,267 INFO L435 NwaCegarLoop]: 64 mSDtfsCounter, 127 mSDsluCounter, 2566 mSDsCounter, 0 mSdLazyCounter, 5487 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 2630 SdHoareTripleChecker+Invalid, 5541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 5487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-27 23:29:47,267 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 2630 Invalid, 5541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 5487 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-27 23:29:47,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6470 states. [2024-11-27 23:29:47,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6470 to 6043. [2024-11-27 23:29:47,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6043 states, 6041 states have (on average 1.0738288362853832) internal successors, (6487), 6042 states have internal predecessors, (6487), 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) [2024-11-27 23:29:47,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6043 states to 6043 states and 6487 transitions. [2024-11-27 23:29:47,307 INFO L78 Accepts]: Start accepts. Automaton has 6043 states and 6487 transitions. Word has length 126 [2024-11-27 23:29:47,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:29:47,308 INFO L471 AbstractCegarLoop]: Abstraction has 6043 states and 6487 transitions. [2024-11-27 23:29:47,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 3.1219512195121952) internal successors, (256), 82 states have internal predecessors, (256), 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) [2024-11-27 23:29:47,308 INFO L276 IsEmpty]: Start isEmpty. Operand 6043 states and 6487 transitions. [2024-11-27 23:29:47,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-27 23:29:47,311 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:29:47,311 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:29:47,329 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2024-11-27 23:29:47,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable93 [2024-11-27 23:29:47,512 INFO L396 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:29:47,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:29:47,512 INFO L85 PathProgramCache]: Analyzing trace with hash 2020672796, now seen corresponding path program 1 times [2024-11-27 23:29:47,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:29:47,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409277112] [2024-11-27 23:29:47,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:47,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:29:47,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:48,745 INFO L134 CoverageAnalysis]: Checked inductivity of 872 backedges. 378 proven. 494 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:29:48,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:29:48,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409277112] [2024-11-27 23:29:48,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409277112] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:29:48,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438406071] [2024-11-27 23:29:48,745 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:48,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:48,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:29:48,749 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:29:48,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2024-11-27 23:29:49,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:49,139 INFO L256 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 93 conjuncts are in the unsatisfiable core [2024-11-27 23:29:49,141 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:29:49,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-27 23:29:49,951 INFO L134 CoverageAnalysis]: Checked inductivity of 872 backedges. 435 proven. 437 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:29:49,951 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:29:52,095 INFO L134 CoverageAnalysis]: Checked inductivity of 872 backedges. 435 proven. 437 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:29:52,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438406071] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:29:52,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:29:52,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 93 [2024-11-27 23:29:52,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041087161] [2024-11-27 23:29:52,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:29:52,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2024-11-27 23:29:52,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:29:52,097 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2024-11-27 23:29:52,097 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1140, Invalid=7602, Unknown=0, NotChecked=0, Total=8742 [2024-11-27 23:29:52,097 INFO L87 Difference]: Start difference. First operand 6043 states and 6487 transitions. Second operand has 94 states, 93 states have (on average 3.4408602150537635) internal successors, (320), 94 states have internal predecessors, (320), 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) [2024-11-27 23:29:54,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:29:54,043 INFO L93 Difference]: Finished difference Result 6448 states and 6906 transitions. [2024-11-27 23:29:54,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-27 23:29:54,043 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 3.4408602150537635) internal successors, (320), 94 states have internal predecessors, (320), 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) Word has length 126 [2024-11-27 23:29:54,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:29:54,047 INFO L225 Difference]: With dead ends: 6448 [2024-11-27 23:29:54,047 INFO L226 Difference]: Without dead ends: 6448 [2024-11-27 23:29:54,047 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3602 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1193, Invalid=7737, Unknown=0, NotChecked=0, Total=8930 [2024-11-27 23:29:54,048 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 66 mSDsluCounter, 1871 mSDsCounter, 0 mSdLazyCounter, 3705 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 1941 SdHoareTripleChecker+Invalid, 3716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 3705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-27 23:29:54,048 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 1941 Invalid, 3716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 3705 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-27 23:29:54,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6448 states. [2024-11-27 23:29:54,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6448 to 5973. [2024-11-27 23:29:54,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5973 states, 5971 states have (on average 1.0745268799196115) internal successors, (6416), 5972 states have internal predecessors, (6416), 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) [2024-11-27 23:29:54,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5973 states to 5973 states and 6416 transitions. [2024-11-27 23:29:54,089 INFO L78 Accepts]: Start accepts. Automaton has 5973 states and 6416 transitions. Word has length 126 [2024-11-27 23:29:54,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:29:54,089 INFO L471 AbstractCegarLoop]: Abstraction has 5973 states and 6416 transitions. [2024-11-27 23:29:54,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 3.4408602150537635) internal successors, (320), 94 states have internal predecessors, (320), 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) [2024-11-27 23:29:54,090 INFO L276 IsEmpty]: Start isEmpty. Operand 5973 states and 6416 transitions. [2024-11-27 23:29:54,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-27 23:29:54,094 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:29:54,094 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:29:54,104 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2024-11-27 23:29:54,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable94 [2024-11-27 23:29:54,295 INFO L396 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:29:54,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:29:54,295 INFO L85 PathProgramCache]: Analyzing trace with hash -107579395, now seen corresponding path program 25 times [2024-11-27 23:29:54,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:29:54,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744496836] [2024-11-27 23:29:54,295 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:29:54,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:29:54,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:56,227 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 126 proven. 328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:29:56,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:29:56,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744496836] [2024-11-27 23:29:56,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744496836] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:29:56,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161617693] [2024-11-27 23:29:56,228 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:29:56,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:56,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:29:56,229 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:29:56,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2024-11-27 23:29:56,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:56,669 INFO L256 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 184 conjuncts are in the unsatisfiable core [2024-11-27 23:29:56,673 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:29:56,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-27 23:29:56,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2024-11-27 23:30:00,506 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 168 proven. 286 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:30:00,506 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:30:04,260 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 218 proven. 236 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:30:04,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161617693] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:30:04,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:30:04,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 36] total 104 [2024-11-27 23:30:04,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101946000] [2024-11-27 23:30:04,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:30:04,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2024-11-27 23:30:04,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:30:04,262 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2024-11-27 23:30:04,263 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1005, Invalid=9915, Unknown=0, NotChecked=0, Total=10920 [2024-11-27 23:30:04,263 INFO L87 Difference]: Start difference. First operand 5973 states and 6416 transitions. Second operand has 105 states, 104 states have (on average 3.6153846153846154) internal successors, (376), 105 states have internal predecessors, (376), 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) [2024-11-27 23:30:11,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:30:11,508 INFO L93 Difference]: Finished difference Result 7300 states and 7763 transitions. [2024-11-27 23:30:11,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2024-11-27 23:30:11,508 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 104 states have (on average 3.6153846153846154) internal successors, (376), 105 states have internal predecessors, (376), 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) Word has length 126 [2024-11-27 23:30:11,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:30:11,512 INFO L225 Difference]: With dead ends: 7300 [2024-11-27 23:30:11,512 INFO L226 Difference]: Without dead ends: 7010 [2024-11-27 23:30:11,513 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7345 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=2031, Invalid=23091, Unknown=0, NotChecked=0, Total=25122 [2024-11-27 23:30:11,513 INFO L435 NwaCegarLoop]: 92 mSDtfsCounter, 250 mSDsluCounter, 2907 mSDsCounter, 0 mSdLazyCounter, 6371 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 2999 SdHoareTripleChecker+Invalid, 6450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 6371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-27 23:30:11,513 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 2999 Invalid, 6450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 6371 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-27 23:30:11,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7010 states. [2024-11-27 23:30:11,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7010 to 5918. [2024-11-27 23:30:11,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5918 states, 5916 states have (on average 1.0706558485463151) internal successors, (6334), 5917 states have internal predecessors, (6334), 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) [2024-11-27 23:30:11,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5918 states to 5918 states and 6334 transitions. [2024-11-27 23:30:11,549 INFO L78 Accepts]: Start accepts. Automaton has 5918 states and 6334 transitions. Word has length 126 [2024-11-27 23:30:11,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:30:11,549 INFO L471 AbstractCegarLoop]: Abstraction has 5918 states and 6334 transitions. [2024-11-27 23:30:11,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 104 states have (on average 3.6153846153846154) internal successors, (376), 105 states have internal predecessors, (376), 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) [2024-11-27 23:30:11,549 INFO L276 IsEmpty]: Start isEmpty. Operand 5918 states and 6334 transitions. [2024-11-27 23:30:11,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-27 23:30:11,552 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:30:11,552 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:30:11,564 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2024-11-27 23:30:11,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2024-11-27 23:30:11,753 INFO L396 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:30:11,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:30:11,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1224653681, now seen corresponding path program 26 times [2024-11-27 23:30:11,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:30:11,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148221691] [2024-11-27 23:30:11,754 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:30:11,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:30:11,787 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:30:11,787 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:30:13,616 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 190 proven. 399 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:30:13,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:30:13,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148221691] [2024-11-27 23:30:13,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148221691] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:30:13,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305438712] [2024-11-27 23:30:13,617 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:30:13,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:30:13,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:30:13,619 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:30:13,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2024-11-27 23:30:14,053 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:30:14,054 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:30:14,059 INFO L256 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 217 conjuncts are in the unsatisfiable core [2024-11-27 23:30:14,064 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:30:14,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2024-11-27 23:30:14,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-27 23:30:18,611 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 0 proven. 589 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:30:18,611 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:30:22,992 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 0 proven. 589 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:30:22,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305438712] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:30:22,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:30:22,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 39, 39] total 114 [2024-11-27 23:30:22,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651679816] [2024-11-27 23:30:22,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:30:22,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 115 states [2024-11-27 23:30:22,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:30:22,994 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2024-11-27 23:30:22,995 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1144, Invalid=11966, Unknown=0, NotChecked=0, Total=13110 [2024-11-27 23:30:22,995 INFO L87 Difference]: Start difference. First operand 5918 states and 6334 transitions. Second operand has 115 states, 114 states have (on average 3.3508771929824563) internal successors, (382), 115 states have internal predecessors, (382), 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) [2024-11-27 23:30:31,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:30:31,054 INFO L93 Difference]: Finished difference Result 6973 states and 7400 transitions. [2024-11-27 23:30:31,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2024-11-27 23:30:31,054 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 114 states have (on average 3.3508771929824563) internal successors, (382), 115 states have internal predecessors, (382), 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) Word has length 128 [2024-11-27 23:30:31,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:30:31,058 INFO L225 Difference]: With dead ends: 6973 [2024-11-27 23:30:31,058 INFO L226 Difference]: Without dead ends: 6713 [2024-11-27 23:30:31,059 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7691 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=2007, Invalid=23115, Unknown=0, NotChecked=0, Total=25122 [2024-11-27 23:30:31,059 INFO L435 NwaCegarLoop]: 82 mSDtfsCounter, 409 mSDsluCounter, 3201 mSDsCounter, 0 mSdLazyCounter, 7772 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 3283 SdHoareTripleChecker+Invalid, 7864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 7772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-27 23:30:31,060 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 3283 Invalid, 7864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 7772 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-11-27 23:30:31,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6713 states. [2024-11-27 23:30:31,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6713 to 5920. [2024-11-27 23:30:31,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5920 states, 5918 states have (on average 1.070631970260223) internal successors, (6336), 5919 states have internal predecessors, (6336), 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) [2024-11-27 23:30:31,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5920 states to 5920 states and 6336 transitions. [2024-11-27 23:30:31,098 INFO L78 Accepts]: Start accepts. Automaton has 5920 states and 6336 transitions. Word has length 128 [2024-11-27 23:30:31,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:30:31,098 INFO L471 AbstractCegarLoop]: Abstraction has 5920 states and 6336 transitions. [2024-11-27 23:30:31,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 115 states, 114 states have (on average 3.3508771929824563) internal successors, (382), 115 states have internal predecessors, (382), 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) [2024-11-27 23:30:31,098 INFO L276 IsEmpty]: Start isEmpty. Operand 5920 states and 6336 transitions. [2024-11-27 23:30:31,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-27 23:30:31,101 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:30:31,101 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:30:31,113 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2024-11-27 23:30:31,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:30:31,301 INFO L396 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:30:31,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:30:31,302 INFO L85 PathProgramCache]: Analyzing trace with hash 36167498, now seen corresponding path program 18 times [2024-11-27 23:30:31,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:30:31,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104146158] [2024-11-27 23:30:31,302 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:30:31,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:30:31,374 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2024-11-27 23:30:31,374 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:30:33,055 INFO L134 CoverageAnalysis]: Checked inductivity of 921 backedges. 378 proven. 543 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:30:33,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:30:33,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104146158] [2024-11-27 23:30:33,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104146158] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:30:33,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449966740] [2024-11-27 23:30:33,055 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:30:33,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:30:33,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:30:33,057 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:30:33,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2024-11-27 23:30:33,819 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2024-11-27 23:30:33,819 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:30:33,825 INFO L256 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 114 conjuncts are in the unsatisfiable core [2024-11-27 23:30:33,827 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:30:34,566 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 13 treesize of output 9 [2024-11-27 23:30:35,689 INFO L134 CoverageAnalysis]: Checked inductivity of 921 backedges. 33 proven. 888 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:30:35,689 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:30:35,763 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 13 [2024-11-27 23:30:35,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-27 23:30:35,979 INFO L134 CoverageAnalysis]: Checked inductivity of 921 backedges. 33 proven. 888 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:30:35,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449966740] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:30:35,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:30:35,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 40, 40] total 83 [2024-11-27 23:30:35,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829739551] [2024-11-27 23:30:35,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:30:35,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2024-11-27 23:30:35,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:30:35,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2024-11-27 23:30:35,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=6387, Unknown=0, NotChecked=0, Total=6806 [2024-11-27 23:30:35,980 INFO L87 Difference]: Start difference. First operand 5920 states and 6336 transitions. Second operand has 83 states, 83 states have (on average 3.1566265060240966) internal successors, (262), 83 states have internal predecessors, (262), 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) [2024-11-27 23:30:42,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:30:42,752 INFO L93 Difference]: Finished difference Result 7393 states and 7906 transitions. [2024-11-27 23:30:42,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2024-11-27 23:30:42,753 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 3.1566265060240966) internal successors, (262), 83 states have internal predecessors, (262), 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) Word has length 129 [2024-11-27 23:30:42,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:30:42,757 INFO L225 Difference]: With dead ends: 7393 [2024-11-27 23:30:42,757 INFO L226 Difference]: Without dead ends: 7339 [2024-11-27 23:30:42,758 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5494 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=1608, Invalid=21954, Unknown=0, NotChecked=0, Total=23562 [2024-11-27 23:30:42,758 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 288 mSDsluCounter, 2890 mSDsCounter, 0 mSdLazyCounter, 6356 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 2957 SdHoareTripleChecker+Invalid, 6432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 6356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-27 23:30:42,758 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 2957 Invalid, 6432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 6356 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-27 23:30:42,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7339 states. [2024-11-27 23:30:42,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7339 to 6781. [2024-11-27 23:30:42,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6781 states, 6779 states have (on average 1.0739047057088067) internal successors, (7280), 6780 states have internal predecessors, (7280), 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) [2024-11-27 23:30:42,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6781 states to 6781 states and 7280 transitions. [2024-11-27 23:30:42,810 INFO L78 Accepts]: Start accepts. Automaton has 6781 states and 7280 transitions. Word has length 129 [2024-11-27 23:30:42,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:30:42,810 INFO L471 AbstractCegarLoop]: Abstraction has 6781 states and 7280 transitions. [2024-11-27 23:30:42,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 3.1566265060240966) internal successors, (262), 83 states have internal predecessors, (262), 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) [2024-11-27 23:30:42,810 INFO L276 IsEmpty]: Start isEmpty. Operand 6781 states and 7280 transitions. [2024-11-27 23:30:42,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-27 23:30:42,813 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:30:42,813 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:30:42,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2024-11-27 23:30:43,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:30:43,014 INFO L396 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:30:43,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:30:43,014 INFO L85 PathProgramCache]: Analyzing trace with hash 2069756954, now seen corresponding path program 27 times [2024-11-27 23:30:43,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:30:43,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773940841] [2024-11-27 23:30:43,014 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:30:43,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:30:43,065 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-27 23:30:43,065 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:30:45,012 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 119 proven. 304 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:30:45,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:30:45,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773940841] [2024-11-27 23:30:45,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773940841] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:30:45,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337171479] [2024-11-27 23:30:45,013 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:30:45,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:30:45,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:30:45,015 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:30:45,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2024-11-27 23:30:48,663 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-27 23:30:48,664 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:30:48,674 INFO L256 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 178 conjuncts are in the unsatisfiable core [2024-11-27 23:30:48,680 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:30:48,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2024-11-27 23:30:53,024 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 0 proven. 423 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:30:53,024 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:30:56,970 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 0 proven. 423 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:30:56,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337171479] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:30:56,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:30:56,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 41, 41] total 122 [2024-11-27 23:30:56,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771365103] [2024-11-27 23:30:56,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:30:56,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2024-11-27 23:30:56,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:30:56,972 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2024-11-27 23:30:56,973 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1330, Invalid=13676, Unknown=0, NotChecked=0, Total=15006 [2024-11-27 23:30:56,973 INFO L87 Difference]: Start difference. First operand 6781 states and 7280 transitions. Second operand has 123 states, 122 states have (on average 3.1557377049180326) internal successors, (385), 123 states have internal predecessors, (385), 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) [2024-11-27 23:31:08,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:31:08,243 INFO L93 Difference]: Finished difference Result 8098 states and 8613 transitions. [2024-11-27 23:31:08,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2024-11-27 23:31:08,243 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 122 states have (on average 3.1557377049180326) internal successors, (385), 123 states have internal predecessors, (385), 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) Word has length 129 [2024-11-27 23:31:08,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:31:08,248 INFO L225 Difference]: With dead ends: 8098 [2024-11-27 23:31:08,248 INFO L226 Difference]: Without dead ends: 7832 [2024-11-27 23:31:08,249 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12460 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=3059, Invalid=35553, Unknown=0, NotChecked=0, Total=38612 [2024-11-27 23:31:08,249 INFO L435 NwaCegarLoop]: 101 mSDtfsCounter, 731 mSDsluCounter, 4391 mSDsCounter, 0 mSdLazyCounter, 10332 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 4492 SdHoareTripleChecker+Invalid, 10428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 10332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-11-27 23:31:08,249 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 4492 Invalid, 10428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 10332 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2024-11-27 23:31:08,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7832 states. [2024-11-27 23:31:08,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7832 to 6538. [2024-11-27 23:31:08,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6538 states, 6536 states have (on average 1.0735924112607098) internal successors, (7017), 6537 states have internal predecessors, (7017), 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) [2024-11-27 23:31:08,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6538 states to 6538 states and 7017 transitions. [2024-11-27 23:31:08,290 INFO L78 Accepts]: Start accepts. Automaton has 6538 states and 7017 transitions. Word has length 129 [2024-11-27 23:31:08,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:31:08,290 INFO L471 AbstractCegarLoop]: Abstraction has 6538 states and 7017 transitions. [2024-11-27 23:31:08,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 122 states have (on average 3.1557377049180326) internal successors, (385), 123 states have internal predecessors, (385), 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) [2024-11-27 23:31:08,291 INFO L276 IsEmpty]: Start isEmpty. Operand 6538 states and 7017 transitions. [2024-11-27 23:31:08,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-27 23:31:08,293 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:31:08,293 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:31:08,305 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2024-11-27 23:31:08,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:08,493 INFO L396 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:31:08,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:08,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1950504219, now seen corresponding path program 2 times [2024-11-27 23:31:08,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:31:08,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688474228] [2024-11-27 23:31:08,494 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:31:08,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:08,528 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:31:08,529 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:31:10,321 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 276 proven. 508 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:31:10,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:31:10,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688474228] [2024-11-27 23:31:10,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688474228] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:31:10,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233250876] [2024-11-27 23:31:10,321 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:31:10,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:10,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:10,323 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:31:10,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2024-11-27 23:31:10,784 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:31:10,784 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:31:10,789 INFO L256 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 234 conjuncts are in the unsatisfiable core [2024-11-27 23:31:10,793 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:31:10,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2024-11-27 23:31:15,268 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:31:15,268 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:31:19,376 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:31:19,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233250876] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:31:19,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:31:19,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 40, 40] total 114 [2024-11-27 23:31:19,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131913504] [2024-11-27 23:31:19,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:31:19,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 115 states [2024-11-27 23:31:19,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:31:19,378 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2024-11-27 23:31:19,379 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1192, Invalid=11918, Unknown=0, NotChecked=0, Total=13110 [2024-11-27 23:31:19,379 INFO L87 Difference]: Start difference. First operand 6538 states and 7017 transitions. Second operand has 115 states, 114 states have (on average 3.4035087719298245) internal successors, (388), 115 states have internal predecessors, (388), 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) [2024-11-27 23:31:27,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:31:27,601 INFO L93 Difference]: Finished difference Result 7350 states and 7845 transitions. [2024-11-27 23:31:27,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2024-11-27 23:31:27,601 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 114 states have (on average 3.4035087719298245) internal successors, (388), 115 states have internal predecessors, (388), 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) Word has length 130 [2024-11-27 23:31:27,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:31:27,608 INFO L225 Difference]: With dead ends: 7350 [2024-11-27 23:31:27,608 INFO L226 Difference]: Without dead ends: 7350 [2024-11-27 23:31:27,609 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8999 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=2652, Invalid=26418, Unknown=0, NotChecked=0, Total=29070 [2024-11-27 23:31:27,609 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 465 mSDsluCounter, 3061 mSDsCounter, 0 mSdLazyCounter, 6948 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 3137 SdHoareTripleChecker+Invalid, 7109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 6948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-27 23:31:27,609 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 3137 Invalid, 7109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 6948 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-27 23:31:27,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7350 states. [2024-11-27 23:31:27,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7350 to 6539. [2024-11-27 23:31:27,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6539 states, 6537 states have (on average 1.0737341288052624) internal successors, (7019), 6538 states have internal predecessors, (7019), 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) [2024-11-27 23:31:27,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6539 states to 6539 states and 7019 transitions. [2024-11-27 23:31:27,653 INFO L78 Accepts]: Start accepts. Automaton has 6539 states and 7019 transitions. Word has length 130 [2024-11-27 23:31:27,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:31:27,653 INFO L471 AbstractCegarLoop]: Abstraction has 6539 states and 7019 transitions. [2024-11-27 23:31:27,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 115 states, 114 states have (on average 3.4035087719298245) internal successors, (388), 115 states have internal predecessors, (388), 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) [2024-11-27 23:31:27,653 INFO L276 IsEmpty]: Start isEmpty. Operand 6539 states and 7019 transitions. [2024-11-27 23:31:27,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-27 23:31:27,655 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:31:27,655 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:31:27,664 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2024-11-27 23:31:27,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:27,856 INFO L396 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:31:27,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:27,856 INFO L85 PathProgramCache]: Analyzing trace with hash 315260750, now seen corresponding path program 28 times [2024-11-27 23:31:27,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:31:27,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883146994] [2024-11-27 23:31:27,856 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:31:27,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:27,945 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:31:27,945 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:31:29,873 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 136 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:31:29,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:31:29,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883146994] [2024-11-27 23:31:29,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883146994] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:31:29,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758889201] [2024-11-27 23:31:29,873 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:31:29,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:29,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:29,875 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:31:29,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2024-11-27 23:31:31,478 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:31:31,479 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:31:31,484 INFO L256 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 172 conjuncts are in the unsatisfiable core [2024-11-27 23:31:31,488 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:31:31,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-27 23:31:31,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2024-11-27 23:31:35,480 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 157 proven. 267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:31:35,480 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:31:39,536 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 211 proven. 213 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:31:39,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758889201] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:31:39,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:31:39,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 37, 37] total 110 [2024-11-27 23:31:39,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275554340] [2024-11-27 23:31:39,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:31:39,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 111 states [2024-11-27 23:31:39,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:31:39,538 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2024-11-27 23:31:39,538 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=963, Invalid=11247, Unknown=0, NotChecked=0, Total=12210 [2024-11-27 23:31:39,538 INFO L87 Difference]: Start difference. First operand 6539 states and 7019 transitions. Second operand has 111 states, 110 states have (on average 3.5545454545454547) internal successors, (391), 111 states have internal predecessors, (391), 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) [2024-11-27 23:31:47,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:31:47,569 INFO L93 Difference]: Finished difference Result 7804 states and 8306 transitions. [2024-11-27 23:31:47,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2024-11-27 23:31:47,569 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 110 states have (on average 3.5545454545454547) internal successors, (391), 111 states have internal predecessors, (391), 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) Word has length 131 [2024-11-27 23:31:47,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:31:47,575 INFO L225 Difference]: With dead ends: 7804 [2024-11-27 23:31:47,576 INFO L226 Difference]: Without dead ends: 7532 [2024-11-27 23:31:47,577 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8564 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=2136, Invalid=26256, Unknown=0, NotChecked=0, Total=28392 [2024-11-27 23:31:47,578 INFO L435 NwaCegarLoop]: 99 mSDtfsCounter, 223 mSDsluCounter, 3792 mSDsCounter, 0 mSdLazyCounter, 8200 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 3891 SdHoareTripleChecker+Invalid, 8258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 8200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:31:47,578 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 3891 Invalid, 8258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 8200 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-27 23:31:47,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7532 states. [2024-11-27 23:31:47,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7532 to 6559. [2024-11-27 23:31:47,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6559 states, 6557 states have (on average 1.0732042092420315) internal successors, (7037), 6558 states have internal predecessors, (7037), 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) [2024-11-27 23:31:47,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6559 states to 6559 states and 7037 transitions. [2024-11-27 23:31:47,626 INFO L78 Accepts]: Start accepts. Automaton has 6559 states and 7037 transitions. Word has length 131 [2024-11-27 23:31:47,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:31:47,627 INFO L471 AbstractCegarLoop]: Abstraction has 6559 states and 7037 transitions. [2024-11-27 23:31:47,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 111 states, 110 states have (on average 3.5545454545454547) internal successors, (391), 111 states have internal predecessors, (391), 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) [2024-11-27 23:31:47,627 INFO L276 IsEmpty]: Start isEmpty. Operand 6559 states and 7037 transitions. [2024-11-27 23:31:47,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-27 23:31:47,630 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:31:47,630 INFO L218 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:31:47,641 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2024-11-27 23:31:47,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:47,830 INFO L396 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:31:47,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:47,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1871635109, now seen corresponding path program 29 times [2024-11-27 23:31:47,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:31:47,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324714955] [2024-11-27 23:31:47,831 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:31:47,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:47,872 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2024-11-27 23:31:47,872 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:31:49,746 INFO L134 CoverageAnalysis]: Checked inductivity of 621 backedges. 282 proven. 339 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:31:49,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:31:49,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324714955] [2024-11-27 23:31:49,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324714955] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:31:49,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626453775] [2024-11-27 23:31:49,746 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:31:49,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:49,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:49,748 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:31:49,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2024-11-27 23:31:50,933 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2024-11-27 23:31:50,934 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:31:50,940 INFO L256 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 139 conjuncts are in the unsatisfiable core [2024-11-27 23:31:50,943 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:31:50,994 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2024-11-27 23:31:51,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-27 23:31:55,273 INFO L134 CoverageAnalysis]: Checked inductivity of 621 backedges. 274 proven. 347 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:31:55,273 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:31:59,401 INFO L134 CoverageAnalysis]: Checked inductivity of 621 backedges. 340 proven. 281 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:31:59,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626453775] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:31:59,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:31:59,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 39, 39] total 117 [2024-11-27 23:31:59,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183306850] [2024-11-27 23:31:59,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:31:59,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 118 states [2024-11-27 23:31:59,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:31:59,402 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2024-11-27 23:31:59,403 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1050, Invalid=12756, Unknown=0, NotChecked=0, Total=13806 [2024-11-27 23:31:59,404 INFO L87 Difference]: Start difference. First operand 6559 states and 7037 transitions. Second operand has 118 states, 117 states have (on average 3.393162393162393) internal successors, (397), 118 states have internal predecessors, (397), 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) [2024-11-27 23:32:09,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:32:09,101 INFO L93 Difference]: Finished difference Result 7370 states and 7849 transitions. [2024-11-27 23:32:09,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2024-11-27 23:32:09,102 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 117 states have (on average 3.393162393162393) internal successors, (397), 118 states have internal predecessors, (397), 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) Word has length 133 [2024-11-27 23:32:09,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:32:09,105 INFO L225 Difference]: With dead ends: 7370 [2024-11-27 23:32:09,106 INFO L226 Difference]: Without dead ends: 7102 [2024-11-27 23:32:09,107 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8545 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=2814, Invalid=27986, Unknown=0, NotChecked=0, Total=30800 [2024-11-27 23:32:09,107 INFO L435 NwaCegarLoop]: 85 mSDtfsCounter, 145 mSDsluCounter, 4463 mSDsCounter, 0 mSdLazyCounter, 10240 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 4548 SdHoareTripleChecker+Invalid, 10313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 10240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:32:09,107 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 4548 Invalid, 10313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 10240 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2024-11-27 23:32:09,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7102 states. [2024-11-27 23:32:09,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7102 to 6347. [2024-11-27 23:32:09,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6347 states, 6345 states have (on average 1.070921985815603) internal successors, (6795), 6346 states have internal predecessors, (6795), 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) [2024-11-27 23:32:09,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6347 states to 6347 states and 6795 transitions. [2024-11-27 23:32:09,152 INFO L78 Accepts]: Start accepts. Automaton has 6347 states and 6795 transitions. Word has length 133 [2024-11-27 23:32:09,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:32:09,152 INFO L471 AbstractCegarLoop]: Abstraction has 6347 states and 6795 transitions. [2024-11-27 23:32:09,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 118 states, 117 states have (on average 3.393162393162393) internal successors, (397), 118 states have internal predecessors, (397), 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) [2024-11-27 23:32:09,152 INFO L276 IsEmpty]: Start isEmpty. Operand 6347 states and 6795 transitions. [2024-11-27 23:32:09,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-27 23:32:09,155 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:32:09,156 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:09,169 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2024-11-27 23:32:09,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2024-11-27 23:32:09,356 INFO L396 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:32:09,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:09,357 INFO L85 PathProgramCache]: Analyzing trace with hash 314812825, now seen corresponding path program 30 times [2024-11-27 23:32:09,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:32:09,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906008324] [2024-11-27 23:32:09,357 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:32:09,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:32:09,421 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-11-27 23:32:09,421 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:32:11,327 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 168 proven. 350 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:32:11,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:32:11,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906008324] [2024-11-27 23:32:11,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906008324] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:32:11,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68036875] [2024-11-27 23:32:11,327 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:32:11,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:11,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:32:11,331 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:32:11,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2024-11-27 23:32:14,370 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-11-27 23:32:14,371 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:32:14,379 INFO L256 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 152 conjuncts are in the unsatisfiable core [2024-11-27 23:32:14,382 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:32:14,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-27 23:32:14,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2024-11-27 23:32:18,847 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 0 proven. 518 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:32:18,848 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:32:23,068 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 0 proven. 518 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:32:23,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68036875] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:32:23,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:32:23,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 43, 43] total 128 [2024-11-27 23:32:23,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764431687] [2024-11-27 23:32:23,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:32:23,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 129 states [2024-11-27 23:32:23,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:32:23,070 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2024-11-27 23:32:23,071 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1456, Invalid=15056, Unknown=0, NotChecked=0, Total=16512 [2024-11-27 23:32:23,071 INFO L87 Difference]: Start difference. First operand 6347 states and 6795 transitions. Second operand has 129 states, 128 states have (on average 3.1484375) internal successors, (403), 129 states have internal predecessors, (403), 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) [2024-11-27 23:32:32,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:32:32,059 INFO L93 Difference]: Finished difference Result 7074 states and 7529 transitions. [2024-11-27 23:32:32,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2024-11-27 23:32:32,060 INFO L78 Accepts]: Start accepts. Automaton has has 129 states, 128 states have (on average 3.1484375) internal successors, (403), 129 states have internal predecessors, (403), 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) Word has length 135 [2024-11-27 23:32:32,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:32:32,063 INFO L225 Difference]: With dead ends: 7074 [2024-11-27 23:32:32,063 INFO L226 Difference]: Without dead ends: 6904 [2024-11-27 23:32:32,064 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10582 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=2753, Invalid=29109, Unknown=0, NotChecked=0, Total=31862 [2024-11-27 23:32:32,064 INFO L435 NwaCegarLoop]: 75 mSDtfsCounter, 368 mSDsluCounter, 3262 mSDsCounter, 0 mSdLazyCounter, 8788 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 3337 SdHoareTripleChecker+Invalid, 8819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 8788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:32:32,065 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 3337 Invalid, 8819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 8788 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2024-11-27 23:32:32,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6904 states. [2024-11-27 23:32:32,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6904 to 6386. [2024-11-27 23:32:32,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6386 states, 6384 states have (on average 1.0712719298245614) internal successors, (6839), 6385 states have internal predecessors, (6839), 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) [2024-11-27 23:32:32,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6386 states to 6386 states and 6839 transitions. [2024-11-27 23:32:32,101 INFO L78 Accepts]: Start accepts. Automaton has 6386 states and 6839 transitions. Word has length 135 [2024-11-27 23:32:32,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:32:32,101 INFO L471 AbstractCegarLoop]: Abstraction has 6386 states and 6839 transitions. [2024-11-27 23:32:32,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 129 states, 128 states have (on average 3.1484375) internal successors, (403), 129 states have internal predecessors, (403), 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) [2024-11-27 23:32:32,102 INFO L276 IsEmpty]: Start isEmpty. Operand 6386 states and 6839 transitions. [2024-11-27 23:32:32,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-27 23:32:32,104 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:32:32,104 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:32,118 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2024-11-27 23:32:32,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102,76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:32,304 INFO L396 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:32:32,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:32,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1390640955, now seen corresponding path program 19 times [2024-11-27 23:32:32,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:32:32,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893957752] [2024-11-27 23:32:32,305 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:32:32,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:32:32,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:33,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 435 proven. 603 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:32:33,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:32:33,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893957752] [2024-11-27 23:32:33,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893957752] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:32:33,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060931438] [2024-11-27 23:32:33,995 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:32:33,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:33,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:32:33,997 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:32:33,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2024-11-27 23:32:34,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:34,444 INFO L256 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 120 conjuncts are in the unsatisfiable core [2024-11-27 23:32:34,447 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:32:35,501 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 13 treesize of output 9 [2024-11-27 23:32:36,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 35 proven. 1003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:32:36,882 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:32:36,961 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 13 [2024-11-27 23:32:36,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-27 23:32:37,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 35 proven. 1003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:32:37,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060931438] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:32:37,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:32:37,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 85 [2024-11-27 23:32:37,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917860515] [2024-11-27 23:32:37,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:32:37,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2024-11-27 23:32:37,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:32:37,204 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2024-11-27 23:32:37,204 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=6841, Unknown=0, NotChecked=0, Total=7140 [2024-11-27 23:32:37,204 INFO L87 Difference]: Start difference. First operand 6386 states and 6839 transitions. Second operand has 85 states, 85 states have (on average 3.2470588235294118) internal successors, (276), 85 states have internal predecessors, (276), 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) [2024-11-27 23:32:44,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:32:44,424 INFO L93 Difference]: Finished difference Result 7985 states and 8545 transitions. [2024-11-27 23:32:44,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-11-27 23:32:44,425 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 3.2470588235294118) internal successors, (276), 85 states have internal predecessors, (276), 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) Word has length 136 [2024-11-27 23:32:44,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:32:44,429 INFO L225 Difference]: With dead ends: 7985 [2024-11-27 23:32:44,429 INFO L226 Difference]: Without dead ends: 7928 [2024-11-27 23:32:44,429 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3724 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=942, Invalid=19650, Unknown=0, NotChecked=0, Total=20592 [2024-11-27 23:32:44,430 INFO L435 NwaCegarLoop]: 75 mSDtfsCounter, 229 mSDsluCounter, 4277 mSDsCounter, 0 mSdLazyCounter, 9311 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 4352 SdHoareTripleChecker+Invalid, 9350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 9311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:32:44,430 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 4352 Invalid, 9350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 9311 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-27 23:32:44,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7928 states. [2024-11-27 23:32:44,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7928 to 7283. [2024-11-27 23:32:44,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7283 states, 7281 states have (on average 1.0752643867600604) internal successors, (7829), 7282 states have internal predecessors, (7829), 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) [2024-11-27 23:32:44,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7283 states to 7283 states and 7829 transitions. [2024-11-27 23:32:44,478 INFO L78 Accepts]: Start accepts. Automaton has 7283 states and 7829 transitions. Word has length 136 [2024-11-27 23:32:44,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:32:44,478 INFO L471 AbstractCegarLoop]: Abstraction has 7283 states and 7829 transitions. [2024-11-27 23:32:44,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 3.2470588235294118) internal successors, (276), 85 states have internal predecessors, (276), 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) [2024-11-27 23:32:44,478 INFO L276 IsEmpty]: Start isEmpty. Operand 7283 states and 7829 transitions. [2024-11-27 23:32:44,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-27 23:32:44,481 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:32:44,481 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:44,488 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2024-11-27 23:32:44,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2024-11-27 23:32:44,681 INFO L396 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:32:44,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:44,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1402143771, now seen corresponding path program 16 times [2024-11-27 23:32:44,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:32:44,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616428520] [2024-11-27 23:32:44,682 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:32:44,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:32:44,727 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:32:44,727 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:32:46,990 INFO L134 CoverageAnalysis]: Checked inductivity of 906 backedges. 497 proven. 409 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:32:46,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:32:46,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616428520] [2024-11-27 23:32:46,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616428520] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:32:46,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792400177] [2024-11-27 23:32:46,990 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:32:46,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:46,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:32:46,992 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:32:46,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2024-11-27 23:32:52,178 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:32:52,178 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:32:52,187 INFO L256 TraceCheckSpWp]: Trace formula consists of 801 conjuncts, 160 conjuncts are in the unsatisfiable core [2024-11-27 23:32:52,191 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:32:53,067 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 13 treesize of output 9 [2024-11-27 23:32:54,249 INFO L134 CoverageAnalysis]: Checked inductivity of 906 backedges. 105 proven. 798 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 23:32:54,249 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:32:54,355 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 13 [2024-11-27 23:32:54,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-27 23:32:54,596 INFO L134 CoverageAnalysis]: Checked inductivity of 906 backedges. 105 proven. 798 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 23:32:54,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792400177] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:32:54,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:32:54,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 37, 37] total 77 [2024-11-27 23:32:54,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447886311] [2024-11-27 23:32:54,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:32:54,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2024-11-27 23:32:54,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:32:54,598 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2024-11-27 23:32:54,598 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=5552, Unknown=0, NotChecked=0, Total=5852 [2024-11-27 23:32:54,599 INFO L87 Difference]: Start difference. First operand 7283 states and 7829 transitions. Second operand has 77 states, 77 states have (on average 3.5454545454545454) internal successors, (273), 77 states have internal predecessors, (273), 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) [2024-11-27 23:33:02,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:33:02,604 INFO L93 Difference]: Finished difference Result 10307 states and 10990 transitions. [2024-11-27 23:33:02,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-27 23:33:02,605 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 3.5454545454545454) internal successors, (273), 77 states have internal predecessors, (273), 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) Word has length 138 [2024-11-27 23:33:02,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:33:02,609 INFO L225 Difference]: With dead ends: 10307 [2024-11-27 23:33:02,609 INFO L226 Difference]: Without dead ends: 10110 [2024-11-27 23:33:02,610 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4575 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=1416, Invalid=21536, Unknown=0, NotChecked=0, Total=22952 [2024-11-27 23:33:02,610 INFO L435 NwaCegarLoop]: 55 mSDtfsCounter, 94 mSDsluCounter, 2564 mSDsCounter, 0 mSdLazyCounter, 7170 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 2619 SdHoareTripleChecker+Invalid, 7213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 7170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:33:02,610 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 2619 Invalid, 7213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 7170 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-27 23:33:02,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10110 states. [2024-11-27 23:33:02,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10110 to 7982. [2024-11-27 23:33:02,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7982 states, 7980 states have (on average 1.0773182957393483) internal successors, (8597), 7981 states have internal predecessors, (8597), 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) [2024-11-27 23:33:02,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7982 states to 7982 states and 8597 transitions. [2024-11-27 23:33:02,664 INFO L78 Accepts]: Start accepts. Automaton has 7982 states and 8597 transitions. Word has length 138 [2024-11-27 23:33:02,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:33:02,664 INFO L471 AbstractCegarLoop]: Abstraction has 7982 states and 8597 transitions. [2024-11-27 23:33:02,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 3.5454545454545454) internal successors, (273), 77 states have internal predecessors, (273), 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) [2024-11-27 23:33:02,665 INFO L276 IsEmpty]: Start isEmpty. Operand 7982 states and 8597 transitions. [2024-11-27 23:33:02,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-27 23:33:02,667 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:33:02,668 INFO L218 NwaCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:33:02,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2024-11-27 23:33:02,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:33:02,868 INFO L396 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:33:02,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:33:02,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1273324120, now seen corresponding path program 31 times [2024-11-27 23:33:02,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:33:02,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549518737] [2024-11-27 23:33:02,868 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:33:02,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:33:02,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:33:04,828 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 378 proven. 514 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:33:04,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:33:04,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549518737] [2024-11-27 23:33:04,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549518737] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:33:04,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609820841] [2024-11-27 23:33:04,828 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:33:04,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:33:04,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:33:04,830 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:33:04,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2024-11-27 23:33:05,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:33:05,318 INFO L256 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 128 conjuncts are in the unsatisfiable core [2024-11-27 23:33:05,322 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:33:05,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-27 23:33:11,292 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 435 proven. 457 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:33:11,292 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:33:16,317 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 496 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:33:16,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609820841] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:33:16,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:33:16,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 44, 44] total 128 [2024-11-27 23:33:16,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515625358] [2024-11-27 23:33:16,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:33:16,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 129 states [2024-11-27 23:33:16,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:33:16,319 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2024-11-27 23:33:16,320 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1704, Invalid=14808, Unknown=0, NotChecked=0, Total=16512 [2024-11-27 23:33:16,320 INFO L87 Difference]: Start difference. First operand 7982 states and 8597 transitions. Second operand has 129 states, 128 states have (on average 3.21875) internal successors, (412), 129 states have internal predecessors, (412), 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) [2024-11-27 23:33:22,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:33:22,434 INFO L93 Difference]: Finished difference Result 8894 states and 9507 transitions. [2024-11-27 23:33:22,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2024-11-27 23:33:22,434 INFO L78 Accepts]: Start accepts. Automaton has has 129 states, 128 states have (on average 3.21875) internal successors, (412), 129 states have internal predecessors, (412), 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) Word has length 138 [2024-11-27 23:33:22,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:33:22,439 INFO L225 Difference]: With dead ends: 8894 [2024-11-27 23:33:22,439 INFO L226 Difference]: Without dead ends: 8622 [2024-11-27 23:33:22,440 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8535 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=2792, Invalid=24268, Unknown=0, NotChecked=0, Total=27060 [2024-11-27 23:33:22,440 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 135 mSDsluCounter, 2553 mSDsCounter, 0 mSdLazyCounter, 5532 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 2630 SdHoareTripleChecker+Invalid, 5583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 5532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:33:22,440 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 2630 Invalid, 5583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 5532 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-27 23:33:22,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8622 states. [2024-11-27 23:33:22,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8622 to 7417. [2024-11-27 23:33:22,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7417 states, 7415 states have (on average 1.0739042481456507) internal successors, (7963), 7416 states have internal predecessors, (7963), 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) [2024-11-27 23:33:22,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7417 states to 7417 states and 7963 transitions. [2024-11-27 23:33:22,487 INFO L78 Accepts]: Start accepts. Automaton has 7417 states and 7963 transitions. Word has length 138 [2024-11-27 23:33:22,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:33:22,488 INFO L471 AbstractCegarLoop]: Abstraction has 7417 states and 7963 transitions. [2024-11-27 23:33:22,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 129 states, 128 states have (on average 3.21875) internal successors, (412), 129 states have internal predecessors, (412), 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) [2024-11-27 23:33:22,488 INFO L276 IsEmpty]: Start isEmpty. Operand 7417 states and 7963 transitions. [2024-11-27 23:33:22,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-27 23:33:22,490 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:33:22,491 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:33:22,498 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2024-11-27 23:33:22,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:33:22,691 INFO L396 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-27 23:33:22,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:33:22,691 INFO L85 PathProgramCache]: Analyzing trace with hash -566642997, now seen corresponding path program 32 times [2024-11-27 23:33:22,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:33:22,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042726138] [2024-11-27 23:33:22,691 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:33:22,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:33:22,726 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:33:22,727 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:33:24,655 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 148 proven. 375 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:33:24,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:33:24,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042726138] [2024-11-27 23:33:24,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042726138] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:33:24,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994303828] [2024-11-27 23:33:24,655 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:33:24,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:33:24,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:33:24,657 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:33:24,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9310a5c9-1751-4ed6-a0bd-af6d0f7f5d78/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2024-11-27 23:33:25,142 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:33:25,142 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:33:25,147 INFO L256 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 212 conjuncts are in the unsatisfiable core [2024-11-27 23:33:25,151 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:33:25,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1