./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-memory-alloca/openbsd_cstrcpy-alloca-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_49f33cbb-b8cc-44eb-bf08-005df9ae2b2f/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49f33cbb-b8cc-44eb-bf08-005df9ae2b2f/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_49f33cbb-b8cc-44eb-bf08-005df9ae2b2f/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49f33cbb-b8cc-44eb-bf08-005df9ae2b2f/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-memory-alloca/openbsd_cstrcpy-alloca-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49f33cbb-b8cc-44eb-bf08-005df9ae2b2f/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49f33cbb-b8cc-44eb-bf08-005df9ae2b2f/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 64bit --witnessprinter.graph.data.programhash 96d73e5144e69b17de356213175b4cac1e1bd0fb8c4e4377e7e151c0511f2395 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:00:06,159 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:00:06,278 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49f33cbb-b8cc-44eb-bf08-005df9ae2b2f/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2024-11-28 05:00:06,284 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:00:06,284 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:00:06,329 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:00:06,330 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:00:06,330 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:00:06,330 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 05:00:06,331 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 05:00:06,331 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:00:06,332 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:00:06,333 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:00:06,333 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:00:06,333 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:00:06,333 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:00:06,333 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 05:00:06,334 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:00:06,334 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 05:00:06,334 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 05:00:06,335 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 05:00:06,335 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:00:06,335 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 05:00:06,335 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 05:00:06,335 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:00:06,335 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:00:06,335 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:00:06,336 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:00:06,336 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:00:06,336 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:00:06,336 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:00:06,336 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:00:06,336 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:00:06,336 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:00:06,336 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:00:06,337 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:00:06,337 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:00:06,337 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:00:06,337 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 05:00:06,337 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 05:00:06,337 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:00:06,337 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:00:06,337 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:00:06,337 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:00:06,337 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_49f33cbb-b8cc-44eb-bf08-005df9ae2b2f/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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 96d73e5144e69b17de356213175b4cac1e1bd0fb8c4e4377e7e151c0511f2395 [2024-11-28 05:00:06,684 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:00:06,698 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:00:06,701 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:00:06,703 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:00:06,703 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:00:06,704 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49f33cbb-b8cc-44eb-bf08-005df9ae2b2f/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/termination-memory-alloca/openbsd_cstrcpy-alloca-1.i [2024-11-28 05:00:09,865 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49f33cbb-b8cc-44eb-bf08-005df9ae2b2f/bin/uautomizer-verify-aQ6SnzHsRB/data/e435a4dfe/583453f423ac43b68d8f3db7b62372d7/FLAG8a3a7940c [2024-11-28 05:00:10,179 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:00:10,180 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49f33cbb-b8cc-44eb-bf08-005df9ae2b2f/sv-benchmarks/c/termination-memory-alloca/openbsd_cstrcpy-alloca-1.i [2024-11-28 05:00:10,190 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49f33cbb-b8cc-44eb-bf08-005df9ae2b2f/bin/uautomizer-verify-aQ6SnzHsRB/data/e435a4dfe/583453f423ac43b68d8f3db7b62372d7/FLAG8a3a7940c [2024-11-28 05:00:10,205 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49f33cbb-b8cc-44eb-bf08-005df9ae2b2f/bin/uautomizer-verify-aQ6SnzHsRB/data/e435a4dfe/583453f423ac43b68d8f3db7b62372d7 [2024-11-28 05:00:10,207 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:00:10,208 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:00:10,210 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:00:10,210 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:00:10,214 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:00:10,215 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:00:10" (1/1) ... [2024-11-28 05:00:10,216 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e8dc2e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:10, skipping insertion in model container [2024-11-28 05:00:10,216 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:00:10" (1/1) ... [2024-11-28 05:00:10,243 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:00:10,586 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:00:10,587 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:00:10,589 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:00:10,600 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 05:00:10,641 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:00:10,675 INFO L204 MainTranslator]: Completed translation [2024-11-28 05:00:10,675 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:10 WrapperNode [2024-11-28 05:00:10,676 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:00:10,677 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 05:00:10,677 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 05:00:10,677 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 05:00:10,685 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:10" (1/1) ... [2024-11-28 05:00:10,700 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:10" (1/1) ... [2024-11-28 05:00:10,727 INFO L138 Inliner]: procedures = 111, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 54 [2024-11-28 05:00:10,728 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 05:00:10,729 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 05:00:10,729 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 05:00:10,729 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 05:00:10,740 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:10" (1/1) ... [2024-11-28 05:00:10,741 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:10" (1/1) ... [2024-11-28 05:00:10,743 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:10" (1/1) ... [2024-11-28 05:00:10,758 INFO L175 MemorySlicer]: Split 3 memory accesses to 2 slices as follows [2, 1]. 67 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0]. The 2 writes are split as follows [1, 1]. [2024-11-28 05:00:10,758 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:10" (1/1) ... [2024-11-28 05:00:10,758 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:10" (1/1) ... [2024-11-28 05:00:10,764 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:10" (1/1) ... [2024-11-28 05:00:10,765 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:10" (1/1) ... [2024-11-28 05:00:10,769 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:10" (1/1) ... [2024-11-28 05:00:10,770 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:10" (1/1) ... [2024-11-28 05:00:10,771 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:10" (1/1) ... [2024-11-28 05:00:10,773 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 05:00:10,774 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 05:00:10,774 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 05:00:10,774 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 05:00:10,775 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:10" (1/1) ... [2024-11-28 05:00:10,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:00:10,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49f33cbb-b8cc-44eb-bf08-005df9ae2b2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:00:10,821 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49f33cbb-b8cc-44eb-bf08-005df9ae2b2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 05:00:10,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49f33cbb-b8cc-44eb-bf08-005df9ae2b2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 05:00:10,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 05:00:10,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 05:00:10,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 05:00:10,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 05:00:10,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 05:00:10,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 05:00:10,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 05:00:10,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 05:00:11,017 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 05:00:11,021 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 05:00:11,243 INFO L? ?]: Removed 32 outVars from TransFormulas that were not future-live. [2024-11-28 05:00:11,243 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 05:00:11,255 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 05:00:11,255 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 05:00:11,256 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:00:11 BoogieIcfgContainer [2024-11-28 05:00:11,256 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 05:00:11,260 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 05:00:11,260 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 05:00:11,267 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 05:00:11,267 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:00:10" (1/3) ... [2024-11-28 05:00:11,268 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7978f3a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:00:11, skipping insertion in model container [2024-11-28 05:00:11,268 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:10" (2/3) ... [2024-11-28 05:00:11,270 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7978f3a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:00:11, skipping insertion in model container [2024-11-28 05:00:11,270 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:00:11" (3/3) ... [2024-11-28 05:00:11,272 INFO L128 eAbstractionObserver]: Analyzing ICFG openbsd_cstrcpy-alloca-1.i [2024-11-28 05:00:11,291 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 05:00:11,293 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG openbsd_cstrcpy-alloca-1.i that has 1 procedures, 23 locations, 1 initial locations, 1 loop locations, and 7 error locations. [2024-11-28 05:00:11,354 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:00:11,374 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;@20a46a4a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:00:11,374 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-28 05:00:11,380 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 15 states have (on average 1.8) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:00:11,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-28 05:00:11,388 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:11,389 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 05:00:11,390 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-28 05:00:11,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:11,397 INFO L85 PathProgramCache]: Analyzing trace with hash 889510823, now seen corresponding path program 1 times [2024-11-28 05:00:11,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:11,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466544250] [2024-11-28 05:00:11,408 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:11,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:11,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:11,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:00:11,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:11,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466544250] [2024-11-28 05:00:11,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466544250] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:00:11,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:00:11,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:00:11,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601187464] [2024-11-28 05:00:11,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:00:11,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:00:11,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:11,693 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:00:11,693 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:00:11,695 INFO L87 Difference]: Start difference. First operand has 23 states, 15 states have (on average 1.8) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 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 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:00:11,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:11,763 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2024-11-28 05:00:11,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:00:11,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2024-11-28 05:00:11,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:11,774 INFO L225 Difference]: With dead ends: 24 [2024-11-28 05:00:11,775 INFO L226 Difference]: Without dead ends: 22 [2024-11-28 05:00:11,777 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:00:11,785 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 2 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:11,788 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 58 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:00:11,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-28 05:00:11,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-28 05:00:11,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 21 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:00:11,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2024-11-28 05:00:11,833 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 6 [2024-11-28 05:00:11,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:11,836 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2024-11-28 05:00:11,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:00:11,837 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2024-11-28 05:00:11,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-28 05:00:11,837 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:11,837 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 05:00:11,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 05:00:11,838 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-28 05:00:11,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:11,839 INFO L85 PathProgramCache]: Analyzing trace with hash 889510859, now seen corresponding path program 1 times [2024-11-28 05:00:11,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:11,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288867755] [2024-11-28 05:00:11,839 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:11,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:11,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:12,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:00:12,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:12,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288867755] [2024-11-28 05:00:12,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288867755] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:00:12,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:00:12,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:00:12,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207104067] [2024-11-28 05:00:12,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:00:12,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:00:12,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:12,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:00:12,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:00:12,305 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:00:12,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:12,376 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2024-11-28 05:00:12,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:00:12,376 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2024-11-28 05:00:12,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:12,377 INFO L225 Difference]: With dead ends: 22 [2024-11-28 05:00:12,377 INFO L226 Difference]: Without dead ends: 22 [2024-11-28 05:00:12,377 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 [2024-11-28 05:00:12,378 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 3 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:12,378 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 45 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:00:12,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-28 05:00:12,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2024-11-28 05:00:12,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.6) internal successors, (24), 20 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:00:12,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2024-11-28 05:00:12,381 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 6 [2024-11-28 05:00:12,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:12,382 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2024-11-28 05:00:12,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:00:12,382 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2024-11-28 05:00:12,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-28 05:00:12,382 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:12,382 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 05:00:12,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 05:00:12,383 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-28 05:00:12,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:12,383 INFO L85 PathProgramCache]: Analyzing trace with hash 889510860, now seen corresponding path program 1 times [2024-11-28 05:00:12,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:12,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365996570] [2024-11-28 05:00:12,384 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:12,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:12,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:12,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:00:12,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:12,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365996570] [2024-11-28 05:00:12,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365996570] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:00:12,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:00:12,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:00:12,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522129888] [2024-11-28 05:00:12,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:00:12,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:00:12,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:12,618 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:00:12,618 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:00:12,619 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:00:12,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:12,664 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2024-11-28 05:00:12,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:00:12,664 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2024-11-28 05:00:12,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:12,665 INFO L225 Difference]: With dead ends: 22 [2024-11-28 05:00:12,665 INFO L226 Difference]: Without dead ends: 22 [2024-11-28 05:00:12,665 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 [2024-11-28 05:00:12,666 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:12,666 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:00:12,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-28 05:00:12,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-28 05:00:12,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.5625) internal successors, (25), 21 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:00:12,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2024-11-28 05:00:12,670 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 6 [2024-11-28 05:00:12,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:12,670 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2024-11-28 05:00:12,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:00:12,670 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2024-11-28 05:00:12,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-28 05:00:12,670 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:12,671 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 05:00:12,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 05:00:12,671 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-28 05:00:12,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:12,672 INFO L85 PathProgramCache]: Analyzing trace with hash 889512745, now seen corresponding path program 1 times [2024-11-28 05:00:12,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:12,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083645055] [2024-11-28 05:00:12,672 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:12,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:12,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:12,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:00:12,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:12,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083645055] [2024-11-28 05:00:12,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083645055] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:00:12,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:00:12,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:00:12,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018251522] [2024-11-28 05:00:12,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:00:12,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:00:12,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:12,703 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:00:12,703 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:00:12,704 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:00:12,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:12,734 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2024-11-28 05:00:12,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:00:12,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2024-11-28 05:00:12,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:12,735 INFO L225 Difference]: With dead ends: 23 [2024-11-28 05:00:12,735 INFO L226 Difference]: Without dead ends: 22 [2024-11-28 05:00:12,735 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 [2024-11-28 05:00:12,736 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 2 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:12,737 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 30 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:00:12,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-28 05:00:12,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-28 05:00:12,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.5) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:00:12,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2024-11-28 05:00:12,744 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 6 [2024-11-28 05:00:12,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:12,744 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2024-11-28 05:00:12,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:00:12,744 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2024-11-28 05:00:12,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-28 05:00:12,745 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:12,745 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 05:00:12,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 05:00:12,745 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-28 05:00:12,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:12,748 INFO L85 PathProgramCache]: Analyzing trace with hash 889512782, now seen corresponding path program 1 times [2024-11-28 05:00:12,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:12,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488313002] [2024-11-28 05:00:12,748 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:12,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:12,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:13,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:00:13,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:13,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488313002] [2024-11-28 05:00:13,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488313002] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:00:13,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:00:13,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:00:13,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908519626] [2024-11-28 05:00:13,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:00:13,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:00:13,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:13,017 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:00:13,017 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:00:13,017 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:00:13,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:13,048 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2024-11-28 05:00:13,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:00:13,051 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2024-11-28 05:00:13,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:13,051 INFO L225 Difference]: With dead ends: 21 [2024-11-28 05:00:13,051 INFO L226 Difference]: Without dead ends: 21 [2024-11-28 05:00:13,052 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:00:13,052 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 1 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:13,053 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 35 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:00:13,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-28 05:00:13,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2024-11-28 05:00:13,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.5) internal successors, (21), 18 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) [2024-11-28 05:00:13,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2024-11-28 05:00:13,058 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 6 [2024-11-28 05:00:13,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:13,059 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2024-11-28 05:00:13,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:00:13,059 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2024-11-28 05:00:13,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-28 05:00:13,059 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:13,062 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:00:13,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 05:00:13,063 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-28 05:00:13,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:13,064 INFO L85 PathProgramCache]: Analyzing trace with hash 121443375, now seen corresponding path program 1 times [2024-11-28 05:00:13,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:13,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679130211] [2024-11-28 05:00:13,064 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:13,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:13,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:13,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:00:13,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:13,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679130211] [2024-11-28 05:00:13,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679130211] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:00:13,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:00:13,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:00:13,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306366270] [2024-11-28 05:00:13,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:00:13,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:00:13,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:13,202 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:00:13,202 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:00:13,202 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:00:13,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:13,275 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2024-11-28 05:00:13,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:00:13,277 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2024-11-28 05:00:13,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:13,278 INFO L225 Difference]: With dead ends: 18 [2024-11-28 05:00:13,278 INFO L226 Difference]: Without dead ends: 18 [2024-11-28 05:00:13,278 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 [2024-11-28 05:00:13,279 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 7 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:13,280 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 24 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:00:13,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-28 05:00:13,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-28 05:00:13,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:00:13,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2024-11-28 05:00:13,286 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 8 [2024-11-28 05:00:13,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:13,286 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2024-11-28 05:00:13,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:00:13,286 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2024-11-28 05:00:13,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-28 05:00:13,287 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:13,287 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:00:13,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 05:00:13,287 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-28 05:00:13,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:13,288 INFO L85 PathProgramCache]: Analyzing trace with hash 121443376, now seen corresponding path program 1 times [2024-11-28 05:00:13,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:13,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404849723] [2024-11-28 05:00:13,288 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:13,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:13,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:13,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:00:13,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:13,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404849723] [2024-11-28 05:00:13,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404849723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:00:13,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:00:13,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:00:13,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378702171] [2024-11-28 05:00:13,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:00:13,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:00:13,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:13,584 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:00:13,584 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:00:13,584 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:00:13,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:13,658 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2024-11-28 05:00:13,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:00:13,659 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2024-11-28 05:00:13,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:13,659 INFO L225 Difference]: With dead ends: 26 [2024-11-28 05:00:13,659 INFO L226 Difference]: Without dead ends: 26 [2024-11-28 05:00:13,660 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:00:13,660 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 7 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:13,660 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 45 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:00:13,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-28 05:00:13,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 19. [2024-11-28 05:00:13,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.4) internal successors, (21), 18 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) [2024-11-28 05:00:13,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2024-11-28 05:00:13,668 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 8 [2024-11-28 05:00:13,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:13,668 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2024-11-28 05:00:13,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:00:13,668 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2024-11-28 05:00:13,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-28 05:00:13,669 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:13,669 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:00:13,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 05:00:13,669 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-28 05:00:13,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:13,671 INFO L85 PathProgramCache]: Analyzing trace with hash -530222670, now seen corresponding path program 1 times [2024-11-28 05:00:13,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:13,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094583569] [2024-11-28 05:00:13,672 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:13,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:13,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:13,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:00:13,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:13,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094583569] [2024-11-28 05:00:13,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094583569] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:00:13,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:00:13,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:00:13,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769779812] [2024-11-28 05:00:13,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:00:13,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:00:13,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:13,990 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:00:13,990 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:00:13,991 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 5 states, 4 states have (on average 2.25) 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) [2024-11-28 05:00:14,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:14,055 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2024-11-28 05:00:14,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:00:14,056 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) 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 [2024-11-28 05:00:14,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:14,057 INFO L225 Difference]: With dead ends: 29 [2024-11-28 05:00:14,057 INFO L226 Difference]: Without dead ends: 29 [2024-11-28 05:00:14,057 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:00:14,058 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 5 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:14,058 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 43 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:00:14,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-28 05:00:14,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2024-11-28 05:00:14,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.380952380952381) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:00:14,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2024-11-28 05:00:14,064 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 9 [2024-11-28 05:00:14,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:14,065 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2024-11-28 05:00:14,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) 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) [2024-11-28 05:00:14,065 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2024-11-28 05:00:14,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-28 05:00:14,065 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:14,067 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:00:14,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 05:00:14,068 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-28 05:00:14,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:14,069 INFO L85 PathProgramCache]: Analyzing trace with hash -530222671, now seen corresponding path program 1 times [2024-11-28 05:00:14,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:14,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469228271] [2024-11-28 05:00:14,069 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:14,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:14,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:14,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:00:14,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:14,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469228271] [2024-11-28 05:00:14,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469228271] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:00:14,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:00:14,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:00:14,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487205473] [2024-11-28 05:00:14,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:00:14,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:00:14,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:14,192 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:00:14,192 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:00:14,192 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 4 states, 3 states have (on average 3.0) 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) [2024-11-28 05:00:14,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:14,240 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2024-11-28 05:00:14,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:00:14,241 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) 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 [2024-11-28 05:00:14,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:14,242 INFO L225 Difference]: With dead ends: 24 [2024-11-28 05:00:14,242 INFO L226 Difference]: Without dead ends: 24 [2024-11-28 05:00:14,242 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 [2024-11-28 05:00:14,243 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 5 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:14,243 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 24 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:00:14,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-28 05:00:14,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-28 05:00:14,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:00:14,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2024-11-28 05:00:14,248 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 9 [2024-11-28 05:00:14,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:14,248 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2024-11-28 05:00:14,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) 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) [2024-11-28 05:00:14,248 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2024-11-28 05:00:14,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-28 05:00:14,249 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:14,249 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:00:14,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 05:00:14,249 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-28 05:00:14,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:14,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1244784692, now seen corresponding path program 1 times [2024-11-28 05:00:14,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:14,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40055125] [2024-11-28 05:00:14,250 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:14,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:14,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:14,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:00:14,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:14,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40055125] [2024-11-28 05:00:14,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40055125] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:00:14,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:00:14,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:00:14,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95536891] [2024-11-28 05:00:14,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:00:14,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:00:14,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:14,541 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:00:14,541 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:00:14,542 INFO L87 Difference]: Start difference. First operand 24 states and 27 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) [2024-11-28 05:00:14,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:14,602 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2024-11-28 05:00:14,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:00:14,604 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 [2024-11-28 05:00:14,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:14,604 INFO L225 Difference]: With dead ends: 29 [2024-11-28 05:00:14,604 INFO L226 Difference]: Without dead ends: 29 [2024-11-28 05:00:14,604 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:00:14,605 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:14,605 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 35 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:00:14,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-28 05:00:14,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 19. [2024-11-28 05:00:14,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 16 states have (on average 1.3125) internal successors, (21), 18 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) [2024-11-28 05:00:14,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2024-11-28 05:00:14,611 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2024-11-28 05:00:14,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:14,611 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2024-11-28 05:00:14,611 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) [2024-11-28 05:00:14,612 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2024-11-28 05:00:14,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-28 05:00:14,612 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:14,612 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:00:14,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 05:00:14,613 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-28 05:00:14,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:14,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1026128009, now seen corresponding path program 1 times [2024-11-28 05:00:14,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:14,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187556097] [2024-11-28 05:00:14,615 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:14,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:14,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:14,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:00:14,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:14,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187556097] [2024-11-28 05:00:14,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187556097] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:00:14,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:00:14,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 05:00:14,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036612500] [2024-11-28 05:00:14,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:00:14,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:00:14,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:14,856 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:00:14,856 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:00:14,856 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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) [2024-11-28 05:00:14,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:14,933 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2024-11-28 05:00:14,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 05:00:14,935 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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 [2024-11-28 05:00:14,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:14,936 INFO L225 Difference]: With dead ends: 27 [2024-11-28 05:00:14,936 INFO L226 Difference]: Without dead ends: 27 [2024-11-28 05:00:14,936 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:00:14,937 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 4 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:14,937 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 58 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:00:14,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-28 05:00:14,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2024-11-28 05:00:14,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 24 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:00:14,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2024-11-28 05:00:14,942 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 12 [2024-11-28 05:00:14,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:14,943 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2024-11-28 05:00:14,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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) [2024-11-28 05:00:14,943 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2024-11-28 05:00:14,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-28 05:00:14,943 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:14,943 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:00:14,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 05:00:14,944 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-28 05:00:14,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:14,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1706186379, now seen corresponding path program 1 times [2024-11-28 05:00:14,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:14,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399103804] [2024-11-28 05:00:14,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:14,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:14,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:15,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:00:15,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:15,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399103804] [2024-11-28 05:00:15,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399103804] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:00:15,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:00:15,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 05:00:15,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750811368] [2024-11-28 05:00:15,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:00:15,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 05:00:15,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:15,227 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 05:00:15,228 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:00:15,228 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 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) [2024-11-28 05:00:15,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:15,324 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2024-11-28 05:00:15,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:00:15,325 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 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 [2024-11-28 05:00:15,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:15,326 INFO L225 Difference]: With dead ends: 40 [2024-11-28 05:00:15,326 INFO L226 Difference]: Without dead ends: 40 [2024-11-28 05:00:15,326 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:00:15,327 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 4 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:15,327 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 76 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:00:15,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-28 05:00:15,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 26. [2024-11-28 05:00:15,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 25 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:00:15,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2024-11-28 05:00:15,333 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 12 [2024-11-28 05:00:15,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:15,333 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2024-11-28 05:00:15,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 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) [2024-11-28 05:00:15,333 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2024-11-28 05:00:15,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-28 05:00:15,333 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:15,333 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:00:15,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 05:00:15,336 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-28 05:00:15,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:15,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1313159369, now seen corresponding path program 1 times [2024-11-28 05:00:15,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:15,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139257934] [2024-11-28 05:00:15,338 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:15,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:15,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:15,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:00:15,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:15,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139257934] [2024-11-28 05:00:15,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139257934] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:00:15,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511727242] [2024-11-28 05:00:15,813 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:15,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:00:15,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49f33cbb-b8cc-44eb-bf08-005df9ae2b2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:00:15,819 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49f33cbb-b8cc-44eb-bf08-005df9ae2b2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:00:15,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49f33cbb-b8cc-44eb-bf08-005df9ae2b2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 05:00:15,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:15,912 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 05:00:15,917 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:00:15,987 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 [2024-11-28 05:00:16,179 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:00:16,179 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 [2024-11-28 05:00:16,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:00:16,362 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:00:16,690 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 [2024-11-28 05:00:16,703 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 [2024-11-28 05:00:16,719 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 [2024-11-28 05:00:16,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:00:16,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511727242] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:00:16,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:00:16,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2024-11-28 05:00:16,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924224188] [2024-11-28 05:00:16,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:00:16,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 05:00:16,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:16,734 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 05:00:16,735 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2024-11-28 05:00:16,736 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:00:17,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:17,083 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2024-11-28 05:00:17,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 05:00:17,084 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 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 [2024-11-28 05:00:17,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:17,084 INFO L225 Difference]: With dead ends: 37 [2024-11-28 05:00:17,084 INFO L226 Difference]: Without dead ends: 37 [2024-11-28 05:00:17,085 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2024-11-28 05:00:17,085 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 22 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:17,086 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 101 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:00:17,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-28 05:00:17,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 29. [2024-11-28 05:00:17,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 28 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:00:17,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2024-11-28 05:00:17,089 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 12 [2024-11-28 05:00:17,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:17,089 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2024-11-28 05:00:17,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:00:17,089 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2024-11-28 05:00:17,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-28 05:00:17,090 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:17,090 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:00:17,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49f33cbb-b8cc-44eb-bf08-005df9ae2b2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 05:00:17,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49f33cbb-b8cc-44eb-bf08-005df9ae2b2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 05:00:17,295 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-28 05:00:17,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:17,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1745261176, now seen corresponding path program 1 times [2024-11-28 05:00:17,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:17,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190080755] [2024-11-28 05:00:17,296 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:17,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:17,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:17,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:00:17,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:17,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190080755] [2024-11-28 05:00:17,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190080755] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:00:17,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:00:17,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:00:17,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413085716] [2024-11-28 05:00:17,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:00:17,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:00:17,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:17,457 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:00:17,457 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:00:17,457 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:00:17,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:17,482 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2024-11-28 05:00:17,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:00:17,482 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 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 [2024-11-28 05:00:17,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:17,483 INFO L225 Difference]: With dead ends: 28 [2024-11-28 05:00:17,483 INFO L226 Difference]: Without dead ends: 18 [2024-11-28 05:00:17,483 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 [2024-11-28 05:00:17,484 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 24 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 [2024-11-28 05:00:17,484 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 24 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:00:17,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-28 05:00:17,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-28 05:00:17,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 16 states have (on average 1.125) internal successors, (18), 17 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) [2024-11-28 05:00:17,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2024-11-28 05:00:17,486 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 13 [2024-11-28 05:00:17,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:17,487 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2024-11-28 05:00:17,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:00:17,487 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2024-11-28 05:00:17,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-28 05:00:17,487 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:17,488 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:00:17,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 05:00:17,488 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-28 05:00:17,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:17,488 INFO L85 PathProgramCache]: Analyzing trace with hash 2053234745, now seen corresponding path program 1 times [2024-11-28 05:00:17,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:17,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304548652] [2024-11-28 05:00:17,488 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:17,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:17,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:17,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:00:17,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:17,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304548652] [2024-11-28 05:00:17,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304548652] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:00:17,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352493599] [2024-11-28 05:00:17,972 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:17,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:00:17,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49f33cbb-b8cc-44eb-bf08-005df9ae2b2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:00:17,975 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49f33cbb-b8cc-44eb-bf08-005df9ae2b2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:00:17,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49f33cbb-b8cc-44eb-bf08-005df9ae2b2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 05:00:18,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:18,097 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-28 05:00:18,101 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:00:18,218 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 [2024-11-28 05:00:18,243 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 [2024-11-28 05:00:18,269 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 [2024-11-28 05:00:18,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 17 treesize of output 13 [2024-11-28 05:00:18,768 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:00:18,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 19 [2024-11-28 05:00:19,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:00:19,136 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:00:19,526 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 [2024-11-28 05:00:19,531 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 14 treesize of output 12 [2024-11-28 05:00:19,618 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 05:00:19,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:00:19,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352493599] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:00:19,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:00:19,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 10] total 25 [2024-11-28 05:00:19,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507319824] [2024-11-28 05:00:19,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:00:19,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 05:00:19,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:19,777 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 05:00:19,778 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=570, Unknown=0, NotChecked=0, Total=650 [2024-11-28 05:00:19,778 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 26 states, 25 states have (on average 1.48) internal successors, (37), 26 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) [2024-11-28 05:00:20,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:20,570 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2024-11-28 05:00:20,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 05:00:20,571 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.48) internal successors, (37), 26 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 [2024-11-28 05:00:20,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:20,572 INFO L225 Difference]: With dead ends: 20 [2024-11-28 05:00:20,572 INFO L226 Difference]: Without dead ends: 20 [2024-11-28 05:00:20,573 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=134, Invalid=922, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 05:00:20,573 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 16 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:20,574 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 51 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 05:00:20,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-28 05:00:20,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2024-11-28 05:00:20,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.0625) internal successors, (17), 16 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) [2024-11-28 05:00:20,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2024-11-28 05:00:20,576 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 13 [2024-11-28 05:00:20,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:20,576 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2024-11-28 05:00:20,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.48) internal successors, (37), 26 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) [2024-11-28 05:00:20,577 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2024-11-28 05:00:20,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-28 05:00:20,577 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:20,577 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:00:20,590 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49f33cbb-b8cc-44eb-bf08-005df9ae2b2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 05:00:20,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49f33cbb-b8cc-44eb-bf08-005df9ae2b2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 05:00:20,782 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-28 05:00:20,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:20,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1007966046, now seen corresponding path program 2 times [2024-11-28 05:00:20,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:20,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235824747] [2024-11-28 05:00:20,787 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:00:20,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:20,818 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:00:20,819 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:00:21,453 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:00:21,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:21,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235824747] [2024-11-28 05:00:21,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235824747] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:00:21,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402412257] [2024-11-28 05:00:21,454 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:00:21,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:00:21,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49f33cbb-b8cc-44eb-bf08-005df9ae2b2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:00:21,456 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49f33cbb-b8cc-44eb-bf08-005df9ae2b2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:00:21,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49f33cbb-b8cc-44eb-bf08-005df9ae2b2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 05:00:21,550 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:00:21,550 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:00:21,552 INFO L256 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-28 05:00:21,554 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:00:21,601 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 [2024-11-28 05:00:22,395 INFO L349 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2024-11-28 05:00:22,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 23 [2024-11-28 05:00:22,512 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:00:22,512 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:00:23,032 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 [2024-11-28 05:00:23,043 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 29 treesize of output 25 [2024-11-28 05:00:23,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 23 [2024-11-28 05:00:23,120 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:00:23,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402412257] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:00:23,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:00:23,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2024-11-28 05:00:23,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995720748] [2024-11-28 05:00:23,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:00:23,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-28 05:00:23,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:23,122 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-28 05:00:23,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=651, Unknown=1, NotChecked=0, Total=756 [2024-11-28 05:00:23,123 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 28 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 28 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:00:29,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:00:31,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:31,428 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2024-11-28 05:00:31,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 05:00:31,429 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 28 states have internal predecessors, (38), 0 states have call successors, (0), 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 16 [2024-11-28 05:00:31,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:31,429 INFO L225 Difference]: With dead ends: 32 [2024-11-28 05:00:31,429 INFO L226 Difference]: Without dead ends: 32 [2024-11-28 05:00:31,430 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=249, Invalid=1386, Unknown=5, NotChecked=0, Total=1640 [2024-11-28 05:00:31,431 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 23 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 3 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:31,431 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 51 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 187 Invalid, 5 Unknown, 0 Unchecked, 5.9s Time] [2024-11-28 05:00:31,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-28 05:00:31,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2024-11-28 05:00:31,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 28 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:00:31,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2024-11-28 05:00:31,434 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 16 [2024-11-28 05:00:31,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:31,435 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2024-11-28 05:00:31,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 28 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:00:31,435 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2024-11-28 05:00:31,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-28 05:00:31,436 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:31,436 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:00:31,448 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49f33cbb-b8cc-44eb-bf08-005df9ae2b2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 05:00:31,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49f33cbb-b8cc-44eb-bf08-005df9ae2b2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 05:00:31,641 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-28 05:00:31,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:31,641 INFO L85 PathProgramCache]: Analyzing trace with hash 302415149, now seen corresponding path program 3 times [2024-11-28 05:00:31,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:31,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084819531] [2024-11-28 05:00:31,642 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 05:00:31,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:31,710 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-28 05:00:31,710 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:00:32,529 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:00:32,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:32,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084819531] [2024-11-28 05:00:32,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084819531] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:00:32,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471109664] [2024-11-28 05:00:32,530 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 05:00:32,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:00:32,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49f33cbb-b8cc-44eb-bf08-005df9ae2b2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:00:32,533 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49f33cbb-b8cc-44eb-bf08-005df9ae2b2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:00:32,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49f33cbb-b8cc-44eb-bf08-005df9ae2b2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 05:00:32,716 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-28 05:00:32,717 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:00:32,719 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-28 05:00:32,724 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:00:32,767 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 [2024-11-28 05:00:32,780 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 [2024-11-28 05:00:34,622 INFO L349 Elim1Store]: treesize reduction 4, result has 87.9 percent of original size [2024-11-28 05:00:34,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 39 [2024-11-28 05:00:34,797 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 10 proven. 17 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 05:00:34,797 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:00:37,143 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 66 treesize of output 56 [2024-11-28 05:00:37,265 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:00:37,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 106 treesize of output 176 [2024-11-28 05:00:37,674 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:00:37,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471109664] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:00:37,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:00:37,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 20] total 38 [2024-11-28 05:00:37,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212044891] [2024-11-28 05:00:37,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:00:37,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-28 05:00:37,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:37,676 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-28 05:00:37,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=1279, Unknown=0, NotChecked=0, Total=1482 [2024-11-28 05:00:37,677 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 39 states, 38 states have (on average 1.736842105263158) internal successors, (66), 39 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) [2024-11-28 05:00:39,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:39,896 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2024-11-28 05:00:39,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 05:00:39,897 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 1.736842105263158) internal successors, (66), 39 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 28 [2024-11-28 05:00:39,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:39,897 INFO L225 Difference]: With dead ends: 28 [2024-11-28 05:00:39,897 INFO L226 Difference]: Without dead ends: 0 [2024-11-28 05:00:39,899 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 22 SyntacticMatches, 7 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 906 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=573, Invalid=2507, Unknown=0, NotChecked=0, Total=3080 [2024-11-28 05:00:39,900 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 12 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:39,900 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 60 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 05:00:39,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-28 05:00:39,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-28 05:00:39,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:00:39,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-28 05:00:39,901 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2024-11-28 05:00:39,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:39,902 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-28 05:00:39,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 1.736842105263158) internal successors, (66), 39 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) [2024-11-28 05:00:39,902 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-28 05:00:39,902 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-28 05:00:39,905 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 7 remaining) [2024-11-28 05:00:39,906 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2024-11-28 05:00:39,906 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2024-11-28 05:00:39,906 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 7 remaining) [2024-11-28 05:00:39,906 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 7 remaining) [2024-11-28 05:00:39,906 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 7 remaining) [2024-11-28 05:00:39,907 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-28 05:00:39,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49f33cbb-b8cc-44eb-bf08-005df9ae2b2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 05:00:40,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49f33cbb-b8cc-44eb-bf08-005df9ae2b2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 05:00:40,114 INFO L422 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:00:40,116 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 05:00:40,119 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 05:00:40 BoogieIcfgContainer [2024-11-28 05:00:40,119 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 05:00:40,120 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 05:00:40,120 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 05:00:40,120 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 05:00:40,121 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:00:11" (3/4) ... [2024-11-28 05:00:40,123 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-28 05:00:40,133 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-28 05:00:40,133 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-28 05:00:40,134 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-28 05:00:40,134 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-28 05:00:40,215 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49f33cbb-b8cc-44eb-bf08-005df9ae2b2f/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 05:00:40,215 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49f33cbb-b8cc-44eb-bf08-005df9ae2b2f/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 05:00:40,215 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 05:00:40,216 INFO L158 Benchmark]: Toolchain (without parser) took 30007.69ms. Allocated memory was 117.4MB in the beginning and 176.2MB in the end (delta: 58.7MB). Free memory was 91.9MB in the beginning and 55.8MB in the end (delta: 36.0MB). Peak memory consumption was 92.0MB. Max. memory is 16.1GB. [2024-11-28 05:00:40,216 INFO L158 Benchmark]: CDTParser took 1.72ms. Allocated memory is still 117.4MB. Free memory was 74.7MB in the beginning and 74.5MB in the end (delta: 196.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 05:00:40,217 INFO L158 Benchmark]: CACSL2BoogieTranslator took 466.38ms. Allocated memory is still 117.4MB. Free memory was 91.9MB in the beginning and 75.7MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 05:00:40,217 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.83ms. Allocated memory is still 117.4MB. Free memory was 75.7MB in the beginning and 73.8MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 05:00:40,217 INFO L158 Benchmark]: Boogie Preprocessor took 44.20ms. Allocated memory is still 117.4MB. Free memory was 73.8MB in the beginning and 72.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 05:00:40,218 INFO L158 Benchmark]: RCFGBuilder took 482.75ms. Allocated memory is still 117.4MB. Free memory was 72.3MB in the beginning and 60.5MB in the end (delta: 11.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 05:00:40,218 INFO L158 Benchmark]: TraceAbstraction took 28859.37ms. Allocated memory was 117.4MB in the beginning and 176.2MB in the end (delta: 58.7MB). Free memory was 59.9MB in the beginning and 59.5MB in the end (delta: 402.3kB). Peak memory consumption was 66.8MB. Max. memory is 16.1GB. [2024-11-28 05:00:40,218 INFO L158 Benchmark]: Witness Printer took 95.73ms. Allocated memory is still 176.2MB. Free memory was 59.5MB in the beginning and 55.8MB in the end (delta: 3.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 05:00:40,220 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.72ms. Allocated memory is still 117.4MB. Free memory was 74.7MB in the beginning and 74.5MB in the end (delta: 196.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 466.38ms. Allocated memory is still 117.4MB. Free memory was 91.9MB in the beginning and 75.7MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.83ms. Allocated memory is still 117.4MB. Free memory was 75.7MB in the beginning and 73.8MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 44.20ms. Allocated memory is still 117.4MB. Free memory was 73.8MB in the beginning and 72.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 482.75ms. Allocated memory is still 117.4MB. Free memory was 72.3MB in the beginning and 60.5MB in the end (delta: 11.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 28859.37ms. Allocated memory was 117.4MB in the beginning and 176.2MB in the end (delta: 58.7MB). Free memory was 59.9MB in the beginning and 59.5MB in the end (delta: 402.3kB). Peak memory consumption was 66.8MB. Max. memory is 16.1GB. * Witness Printer took 95.73ms. Allocated memory is still 176.2MB. Free memory was 59.5MB in the beginning and 55.8MB in the end (delta: 3.7MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 554]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 28.8s, OverallIterations: 17, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 12.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5 mSolverCounterUnknown, 125 SdHoareTripleChecker+Valid, 8.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 125 mSDsluCounter, 808 SdHoareTripleChecker+Invalid, 7.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 578 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 958 IncrementalHoareTripleChecker+Invalid, 985 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 230 mSDtfsCounter, 958 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 269 GetRequests, 73 SyntacticMatches, 10 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1448 ImplicationChecksByTransitivity, 10.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=13, InterpolantAutomatonStates: 126, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 17 MinimizatonAttempts, 54 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 14.0s InterpolantComputationTime, 248 NumberOfCodeBlocks, 248 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 292 ConstructedInterpolants, 46 QuantifiedInterpolants, 4285 SizeOfPredicates, 23 NumberOfNonLiveVariables, 501 ConjunctsInSsa, 151 ConjunctsInUnsatCore, 25 InterpolantComputations, 13 PerfectInterpolantSequences, 30/164 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-28 05:00:40,263 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49f33cbb-b8cc-44eb-bf08-005df9ae2b2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE